protocols bgp peer

protocols bgp  peer
VYATTA, INC.
| Vyatta System
BGP
REFERENCE GUIDE
Vyatta
Suite 200
1301 Shoreway Road
Belmont, CA 94002
vyatta.com
650 413 7200
1 888 VYATTA 1 (US and Canada)
COPYRIGHT
Copyright © 2005–2012 Vyatta, Inc. All rights reserved. Vyatta reserves the right to make changes to software, hardware, and documentation without notice. For the most recent version of documentation, visit the Vyatta web site at vyatta.com.
PROPRIETARY NOTICES
Vyatta is a registered trademark of Vyatta, Inc.
VMware, VMware ESX, and VMware server are trademarks of VMware, Inc.
XenServer, and XenCenter are trademarks of Citrix Systems, Inc.
All other trademarks are the property of their respective owners.
RELEASE DATE: March 2012
DOCUMENT REVISION. R6.4 v01
RELEASED WITH: R6.4.0 PART NO. A0‐0216‐10‐0014
iii
Contents
Quick List of Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
List of Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
Organization of This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiii
Vyatta Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
Chapter 1 BGP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
BGP Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
iBGP and eBGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
iBGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
eBGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BGP ID Selection Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
BGP Path Selection Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Scalability of BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Confederations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Route Reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Route Flapping and Flap Damping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
AS Paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
BGP Communities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Peer Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
IPv4 and IPv6 Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Supported Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Configuring BGP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Basic iBGP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Verifying the iBGP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
R1: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Basic eBGP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Verifying the eBGP Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
R1: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Originating a Route to eBGP Neighbors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Verifying the Route Origination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
BGP
R6.4 v01
Vyatta
iv
R1: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
R1: show ip route bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
R4: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
R4: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Inbound Route Filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Verifying the Inbound Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
R4: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
R4: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Outbound Route Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Verifying the Outbound Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
AS 200: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
AS 200: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Confederations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Verifying the Confederation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
R1: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
R2: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
R2: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
R3: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
R3: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
R4: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
R4: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Route Reflectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Verifying the Route Reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
R1: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
R1: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
R2: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
R2: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
R3: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
R3: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
R4: show ip bgp summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
R4: show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Route Redirection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Configuring IPv6 Routing with BGP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Enable Forwarding on R1 and R2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Configure IPv6 BGP Peer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Advertise Connected Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Confirm Advertised Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
BGP
R6.4 v01
Vyatta
v
Chapter 2 Global and Router‐Specific Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Global and Router‐Specific Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
monitor protocol bgp disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
monitor protocol bgp disable all. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
monitor protocol bgp disable events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
monitor protocol bgp disable filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
monitor protocol bgp disable fsm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
monitor protocol bgp disable keepalives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
monitor protocol bgp disable rib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
monitor protocol bgp disable updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
monitor protocol bgp enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
monitor protocol bgp enable events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
monitor protocol bgp enable filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
monitor protocol bgp enable fsm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
monitor protocol bgp enable keepalives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
monitor protocol bgp enable rib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
monitor protocol bgp enable updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
protocols bgp <asn>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
protocols bgp <asn> address‐family ipv6‐unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
protocols bgp <asn> address‐family ipv6‐unicast aggregate‐address <ipv6net>. . . . . . . . . . . . . . . . . . . . . . . . 101
protocols bgp <asn> address‐family ipv6‐unicast network <ipv6net> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
protocols bgp <asn> aggregate‐address <ipv4net> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
protocols bgp <asn> network <ipv4net> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
protocols bgp <asn> parameters always‐compare‐med . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
protocols bgp <asn> parameters bestpath as‐path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
protocols bgp <asn> parameters bestpath compare‐routerid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
protocols bgp <asn> parameters bestpath med . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
protocols bgp <asn> parameters dampening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
protocols bgp <asn> parameters default. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
protocols bgp <asn> parameters deterministic‐med . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
protocols bgp <asn> parameters distance global . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
protocols bgp <asn> parameters distance prefix <ipv4net> distance <dist> . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
protocols bgp <asn> parameters disable‐network‐import‐check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
protocols bgp <asn> parameters enforce‐first‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
protocols bgp <asn> parameters graceful‐restart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
protocols bgp <asn> parameters log‐neighbor‐changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
protocols bgp <asn> parameters no‐fast‐external‐failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
protocols bgp <asn> parameters router‐id <id> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
protocols bgp <asn> parameters scan‐time <seconds> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
protocols bgp <asn> timers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
reset ip bgp <address> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
BGP
R6.4 v01
Vyatta
vi
reset ip bgp <address> ipv4 unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
reset ip bgp all . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
reset ip bgp dampening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
show ip bgp attribute‐info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
show ip bgp cidr‐only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
show ip bgp community‐info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
show ip bgp community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
show ip bgp community‐list <list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
show ip bgp dampened‐paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
show ip bgp filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
show ip bgp flap‐statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
show ip bgp flap‐statistics cidr‐only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
show ip bgp flap‐statistics filter‐list <as‐path‐list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
show ip bgp flap‐statistics prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
show ip bgp flap‐statistics regexp <expr> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
show ip bgp flap‐statistics route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
show ip bgp ipv4 unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
show ip bgp ipv4 unicast cidr‐only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
show ip bgp ipv4 unicast community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
show ip bgp ipv4 unicast community‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
show ip bgp ipv4 unicast filter‐list <as‐path‐list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
show ip bgp ipv4 unicast paths. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
show ip bgp ipv4 unicast prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
show ip bgp ipv4 unicast regexp <regexp> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
show ip bgp ipv4 unicast route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
show ip bgp ipv4 unicast statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
show ip bgp ipv4 unicast summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
show ip bgp memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
show ip bgp paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
show ip bgp prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
show ip bgp regexp <regexp> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
show ip bgp route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
show ip bgp scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
show ip route bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
show ipv6 bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
show ipv6 bgp community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
show ipv6 bgp community‐list <list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
show ipv6 bgp filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
show ipv6 bgp prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
show ipv6 bgp regexp <regexp> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
BGP
R6.4 v01
Vyatta
vii
show monitoring protocols bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Chapter 3 Route Reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Route Reflection Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐reflector‐client . . . . . . . . . . . . . . . . . . 190
protocols bgp <asn> neighbor <id> route‐reflector‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐reflector‐client . . . . . . . 195
protocols bgp <asn> peer‐group <group‐name> route‐reflector‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
protocols bgp <asn> parameters cluster‐id <id>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
protocols bgp <asn> parameters no‐client‐to‐client‐reflection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Chapter 4 Confederations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Confederation Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
protocols bgp <asn> parameters confederation identifier <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
protocols bgp <asn> parameters confederation peers <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Chapter 5 Neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Neighbor Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
protocols bgp <asn> neighbor <id> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast attribute‐unchanged . . . . . . . . . . . . . . . . . . 220
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability dynamic . . . . . . . . . . . . . . . . . . . . 222
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability orf . . . . . . . . . . . . . . . . . . . . . . . . . 224
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast default‐originate . . . . . . . . . . . . . . . . . . . . . . 226
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast disable‐send‐community . . . . . . . . . . . . . . . 228
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name> . 230
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name> . 232
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name> . . . . . 234
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name> . . . . . 236
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast maximum‐prefix <max‐num> . . . . . . . . . . . 238
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐local unchanged. . . . . . . . . . . . . . . 240
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . 242
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast peer‐group <group‐name> . . . . . . . . . . . . . 244
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name> . . . . . 246
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name> . . . . . 248
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast remove‐private‐as . . . . . . . . . . . . . . . . . . . . 250
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map export <map‐name> . . . . . . . . . 252
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map import <map‐name> . . . . . . . . . 254
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast soft‐reconfiguration inbound . . . . . . . . . . . 256
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast unsuppress‐map <map‐name> . . . . . . . . . . 258
BGP
R6.4 v01
Vyatta
viii
protocols bgp <asn> neighbor <id> advertisement‐interval <seconds> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
protocols bgp <asn> neighbor <id> allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
protocols bgp <asn> neighbor <id> attribute‐unchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
protocols bgp <asn> neighbor <id> capability dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
protocols bgp <asn> neighbor <id> capability orf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
protocols bgp <asn> neighbor <id> default‐originate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
protocols bgp <asn> neighbor <id> description <desc> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
protocols bgp <asn> neighbor <id> disable‐capability‐negotiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
protocols bgp <asn> neighbor <id> disable‐connected‐check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
protocols bgp <asn> neighbor <id> disable‐send‐community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
protocols bgp <asn> neighbor <id> distribute‐list export <acl‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
protocols bgp <asn> neighbor <id> distribute‐list import <acl‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
protocols bgp <asn> neighbor <id> ebgp‐multihop <ttl> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
protocols bgp <asn> neighbor <id> filter‐list export <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
protocols bgp <asn> neighbor <id> filter‐list import <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
protocols bgp <asn> neighbor <id> local‐as <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
protocols bgp <asn> neighbor <id> maximum‐prefix <max‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
protocols bgp <asn> neighbor <id> nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
protocols bgp <asn> neighbor <id> override‐capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
protocols bgp <asn> neighbor <id> passive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
protocols bgp <asn> neighbor <id> password <pwd> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
protocols bgp <asn> neighbor <id> peer‐group <group‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
protocols bgp <asn> neighbor <id> port <port‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
protocols bgp <asn> neighbor <id> prefix‐list export <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
protocols bgp <asn> neighbor <id> prefix‐list import <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
protocols bgp <asn> neighbor <id> remote‐as <asn>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
protocols bgp <asn> neighbor <id> remove‐private‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
protocols bgp <asn> neighbor <id> route‐map export <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
protocols bgp <asn> neighbor <id> route‐map import <map‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
protocols bgp <asn> neighbor <id> shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
protocols bgp <asn> neighbor <id> soft‐reconfiguration inbound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
protocols bgp <asn> neighbor <id> strict‐capability‐match. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
protocols bgp <asn> neighbor <id> timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
protocols bgp <asn> neighbor <id> ttl‐security hops <hops> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
protocols bgp <asn> neighbor <id> unsuppress‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
protocols bgp <asn> neighbor <id> update‐source <source> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
protocols bgp <asn> neighbor <id> weight <weight>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
reset ip bgp external . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
reset ip bgp external ipv4 unicast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
show ip bgp ipv4 unicast neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
show ip bgp ipv4 unicast neighbors <id> advertised‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
BGP
R6.4 v01
Vyatta
ix
show ip bgp ipv4 unicast neighbors <id> prefix‐counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
show ip bgp ipv4 unicast neighbors <id> received prefix‐filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
show ip bgp ipv4 unicast neighbors <id> received‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
show ip bgp ipv4 unicast neighbors <id> routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
show ip bgp neighbors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
show ip bgp neighbors <id> advertised‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
show ip bgp neighbors <id> dampened‐routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
show ip bgp neighbors <id> flap‐statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
show ip bgp neighbors <id> prefix‐counts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
show ip bgp neighbors <id> received prefix‐filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
show ip bgp neighbors <id> received‐routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
show ip bgp neighbors <id> routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
show ipv6 bgp neighbors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
show ipv6 bgp neighbors <ipv6> advertised‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
show ipv6 bgp neighbors <ipv6> received‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
show ipv6 bgp neighbors <ipv6> routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
Chapter 6 Peer Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Peer Group Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357
protocols bgp <asn> peer‐group <group‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast . . . . . . . . . . . . . . . . . . . . . . . . . . 363
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast allowas‐in. . . . . . . . . . . . . . . . . 364
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast attribute‐unchanged. . . . . . . . 366
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability dynamic . . . . . . . . . 368
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability orf . . . . . . . . . . . . . . 370
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast default‐originate . . . . . . . . . . . 372
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast disable‐send‐community . . . . 374
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name> 380
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 382
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast maximum‐prefix <max‐num>. 384
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐local unchanged . . . . 386
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐self. . . . . . . . . . . . . . . 388
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390
BGP
R6.4 v01
Vyatta
x
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast remove‐private‐as. . . . . . . . . . 394
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map export <map‐name> . . 396
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map import <map‐name> . . 398
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast soft‐reconfiguration inbound. 400
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast unsuppress‐map <map‐name> 402
protocols bgp <asn> peer‐group <group‐name> allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
protocols bgp <asn> peer‐group <group‐name> attribute‐unchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
protocols bgp <asn> peer‐group <group‐name> capability dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
protocols bgp <asn> peer‐group <group‐name> capability orf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
protocols bgp <asn> peer‐group <group‐name> default‐originate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
protocols bgp <asn> peer‐group <group‐name> description <desc> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
protocols bgp <asn> peer‐group <group‐name> disable‐capability‐negotiation. . . . . . . . . . . . . . . . . . . . . . . . 416
protocols bgp <asn> peer‐group <group‐name> disable‐connected‐check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
protocols bgp <asn> peer‐group <group‐name> disable‐send‐community . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
protocols bgp <asn> peer‐group <group‐name> distribute‐list export <acl‐num> . . . . . . . . . . . . . . . . . . . . . . 422
protocols bgp <asn> peer‐group <group‐name> distribute‐list import <acl‐num> . . . . . . . . . . . . . . . . . . . . . . 424
protocols bgp <asn> peer‐group <group‐name> ebgp‐multihop <ttl> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
protocols bgp <asn> peer‐group <group‐name> filter‐list export <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . 428
protocols bgp <asn> peer‐group <group‐name> filter‐list import <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . 430
protocols bgp <asn> peer‐group <group‐name> local‐as <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
protocols bgp <asn> peer‐group <group‐name> maximum‐prefix <max‐num> . . . . . . . . . . . . . . . . . . . . . . . . 434
protocols bgp <asn> peer‐group <group‐name> nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436
protocols bgp <asn> peer‐group <group‐name> override‐capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
protocols bgp <asn> peer‐group <group‐name> passive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
protocols bgp <asn> peer‐group <group‐name> password <pwd>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
protocols bgp <asn> peer‐group <group‐name> prefix‐list export <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . 444
protocols bgp <asn> peer‐group <group‐name> prefix‐list import <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . 446
protocols bgp <asn> peer‐group <group‐name> remote‐as <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
protocols bgp <asn> peer‐group <group‐name> remove‐private‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
protocols bgp <asn> peer‐group <group‐name> route‐map export <map‐name> . . . . . . . . . . . . . . . . . . . . . . 452
protocols bgp <asn> peer‐group <group‐name> route‐map import <map‐name> . . . . . . . . . . . . . . . . . . . . . . 454
protocols bgp <asn> peer‐group <group‐name> shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456
protocols bgp <asn> peer‐group <group‐name> soft‐reconfiguration inbound . . . . . . . . . . . . . . . . . . . . . . . . 458
protocols bgp <asn> peer‐group <group‐name> ttl‐security hops <hops> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460
protocols bgp <asn> peer‐group <group‐name> unsuppress‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . 462
protocols bgp <asn> peer‐group <group‐name> update‐source <source> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
protocols bgp <asn> peer‐group <group‐name> weight <weight> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466
BGP
R6.4 v01
Vyatta
xi
reset ip bgp peer‐group <group‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468
reset ip bgp peer‐group <group‐name> ipv4 unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470
Chapter 7 Route Redistribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472
Route Redistribution Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
protocols bgp <asn> address‐family ipv6‐unicast redistribute connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474
protocols bgp <asn> address‐family ipv6‐unicast redistribute kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476
protocols bgp <asn> address‐family ipv6‐unicast redistribute ospfv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478
protocols bgp <asn> address‐family ipv6‐unicast redistribute ripng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480
protocols bgp <asn> address‐family ipv6‐unicast redistribute static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482
protocols bgp <asn> redistribute connected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484
protocols bgp <asn> redistribute kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486
protocols bgp <asn> redistribute ospf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 488
protocols bgp <asn> redistribute rip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490
protocols bgp <asn> redistribute static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492
Chapter 8 Route Server . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494
Route Server Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐server‐client . . . . . . . . . . . . . . . . . . . . 496
protocols bgp <asn> neighbor <id> route‐server‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐server‐client . . . . . . . . . 500
protocols bgp <asn> peer‐group <group‐name> route‐server‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
show ip bgp ipv4 unicast rsclient summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
show ip bgp rsclient <address>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
Glossary of Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506
BGP
R6.4 v01
Vyatta
xii
Quick List of Commands
Use this list to help you quickly locate commands.
monitor protocol bgp disable all . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
monitor protocol bgp disable events. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
monitor protocol bgp disable filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
monitor protocol bgp disable fsm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
monitor protocol bgp disable keepalives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
monitor protocol bgp disable rib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
monitor protocol bgp disable updates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
monitor protocol bgp disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
monitor protocol bgp enable events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
monitor protocol bgp enable filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
monitor protocol bgp enable fsm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
monitor protocol bgp enable keepalives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
monitor protocol bgp enable rib . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
monitor protocol bgp enable updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
monitor protocol bgp enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
protocols bgp <asn> address‐family ipv6‐unicast aggregate‐address <ipv6net> . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
protocols bgp <asn> address‐family ipv6‐unicast network <ipv6net> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
protocols bgp <asn> address‐family ipv6‐unicast redistribute connected. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 474
protocols bgp <asn> address‐family ipv6‐unicast redistribute kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 476
protocols bgp <asn> address‐family ipv6‐unicast redistribute ospfv3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478
protocols bgp <asn> address‐family ipv6‐unicast redistribute ripng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480
protocols bgp <asn> address‐family ipv6‐unicast redistribute static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482
protocols bgp <asn> address‐family ipv6‐unicast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
protocols bgp <asn> aggregate‐address <ipv4net> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast attribute‐unchanged . . . . . . . . . . . . . . . . . . . . . . 220
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability dynamic . . . . . . . . . . . . . . . . . . . . . . . . 222
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability orf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast default‐originate. . . . . . . . . . . . . . . . . . . . . . . . . . 226
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast disable‐send‐community . . . . . . . . . . . . . . . . . . . 228
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name> . . . . . 230
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name>. . . . . 232
BGP
R6.4 v01
Vyatta
xiii
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name> . . . . . . . . . 234
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name> . . . . . . . . . 236
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast maximum‐prefix <max‐num> . . . . . . . . . . . . . . . 238
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐local unchanged . . . . . . . . . . . . . . . . . . 240
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast peer‐group <group‐name> . . . . . . . . . . . . . . . . . 244
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name>. . . . . . . . . 246
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name> . . . . . . . . 248
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast remove‐private‐as . . . . . . . . . . . . . . . . . . . . . . . . 250
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map export <map‐name> . . . . . . . . . . . . . 252
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map import <map‐name> . . . . . . . . . . . . . 254
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐reflector‐client . . . . . . . . . . . . . . . . . . . . . . 190
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐server‐client . . . . . . . . . . . . . . . . . . . . . . . . 496
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast soft‐reconfiguration inbound . . . . . . . . . . . . . . . 256
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast unsuppress‐map <map‐name> . . . . . . . . . . . . . . 258
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
protocols bgp <asn> neighbor <id> advertisement‐interval <seconds>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
protocols bgp <asn> neighbor <id> allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
protocols bgp <asn> neighbor <id> attribute‐unchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
protocols bgp <asn> neighbor <id> capability dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
protocols bgp <asn> neighbor <id> capability orf . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
protocols bgp <asn> neighbor <id> default‐originate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
protocols bgp <asn> neighbor <id> description <desc>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272
protocols bgp <asn> neighbor <id> disable‐capability‐negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
protocols bgp <asn> neighbor <id> disable‐connected‐check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
protocols bgp <asn> neighbor <id> disable‐send‐community. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
protocols bgp <asn> neighbor <id> distribute‐list export <acl‐num>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
protocols bgp <asn> neighbor <id> distribute‐list import <acl‐num>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
protocols bgp <asn> neighbor <id> ebgp‐multihop <ttl>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
protocols bgp <asn> neighbor <id> filter‐list export <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
protocols bgp <asn> neighbor <id> filter‐list import <as‐path‐list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288
protocols bgp <asn> neighbor <id> local‐as <asn>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290
protocols bgp <asn> neighbor <id> maximum‐prefix <max‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
protocols bgp <asn> neighbor <id> nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
protocols bgp <asn> neighbor <id> override‐capability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
protocols bgp <asn> neighbor <id> passive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
BGP
R6.4 v01
Vyatta
xiv
protocols bgp <asn> neighbor <id> password <pwd> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
protocols bgp <asn> neighbor <id> peer‐group <group‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302
protocols bgp <asn> neighbor <id> port <port‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
protocols bgp <asn> neighbor <id> prefix‐list export <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
protocols bgp <asn> neighbor <id> prefix‐list import <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
protocols bgp <asn> neighbor <id> remote‐as <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
protocols bgp <asn> neighbor <id> remove‐private‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
protocols bgp <asn> neighbor <id> route‐map export <map‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
protocols bgp <asn> neighbor <id> route‐map import <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
protocols bgp <asn> neighbor <id> route‐reflector‐client. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
protocols bgp <asn> neighbor <id> route‐server‐client. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
protocols bgp <asn> neighbor <id> shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 318
protocols bgp <asn> neighbor <id> soft‐reconfiguration inbound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
protocols bgp <asn> neighbor <id> strict‐capability‐match . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 322
protocols bgp <asn> neighbor <id> timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324
protocols bgp <asn> neighbor <id> ttl‐security hops <hops> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
protocols bgp <asn> neighbor <id> unsuppress‐map <map‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
protocols bgp <asn> neighbor <id> update‐source <source> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
protocols bgp <asn> neighbor <id> weight <weight> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
protocols bgp <asn> neighbor <id> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
protocols bgp <asn> network <ipv4net>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
protocols bgp <asn> parameters always‐compare‐med . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
protocols bgp <asn> parameters bestpath as‐path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
protocols bgp <asn> parameters bestpath compare‐routerid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
protocols bgp <asn> parameters bestpath med. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
protocols bgp <asn> parameters cluster‐id <id> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
protocols bgp <asn> parameters confederation identifier <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
protocols bgp <asn> parameters confederation peers <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
protocols bgp <asn> parameters dampening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
protocols bgp <asn> parameters default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
protocols bgp <asn> parameters deterministic‐med . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
protocols bgp <asn> parameters disable‐network‐import‐check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
protocols bgp <asn> parameters distance global . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
protocols bgp <asn> parameters distance prefix <ipv4net> distance <dist> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
protocols bgp <asn> parameters enforce‐first‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
protocols bgp <asn> parameters graceful‐restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
BGP
R6.4 v01
Vyatta
xv
protocols bgp <asn> parameters log‐neighbor‐changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
protocols bgp <asn> parameters no‐client‐to‐client‐reflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
protocols bgp <asn> parameters no‐fast‐external‐failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
protocols bgp <asn> parameters router‐id <id> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
protocols bgp <asn> parameters scan‐time <seconds> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast allowas‐in . . . . . . . . . . . . . . . . . . . . 364
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast attribute‐unchanged . . . . . . . . . . . 366
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability dynamic . . . . . . . . . . . . . 368
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability orf . . . . . . . . . . . . . . . . . . 370
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast default‐originate. . . . . . . . . . . . . . . 372
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast disable‐send‐community . . . . . . . . 374
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list export <access‐list6‐
name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 376
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list import <access‐list6‐
name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name> . . 380
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name> . . 382
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast maximum‐prefix <max‐num> . . . . 384
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐local unchanged. . . . . . . . 386
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐self . . . . . . . . . . . . . . . . . . 388
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name> . . 390
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name>. . 392
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast remove‐private‐as . . . . . . . . . . . . . 394
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map export <map‐name> . . 396
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map import <map‐name> . . 398
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐reflector‐client . . . . . . . . . . . 195
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐server‐client . . . . . . . . . . . . . 500
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast soft‐reconfiguration inbound . . . . 400
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast unsuppress‐map <map‐name> . . . 402
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
protocols bgp <asn> peer‐group <group‐name> allowas‐in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
protocols bgp <asn> peer‐group <group‐name> attribute‐unchanged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
protocols bgp <asn> peer‐group <group‐name> capability dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
BGP
R6.4 v01
Vyatta
xvi
protocols bgp <asn> peer‐group <group‐name> capability orf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
protocols bgp <asn> peer‐group <group‐name> default‐originate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412
protocols bgp <asn> peer‐group <group‐name> description <desc> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
protocols bgp <asn> peer‐group <group‐name> disable‐capability‐negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . 416
protocols bgp <asn> peer‐group <group‐name> disable‐connected‐check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
protocols bgp <asn> peer‐group <group‐name> disable‐send‐community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 420
protocols bgp <asn> peer‐group <group‐name> distribute‐list export <acl‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . 422
protocols bgp <asn> peer‐group <group‐name> distribute‐list import <acl‐num>. . . . . . . . . . . . . . . . . . . . . . . . . . 424
protocols bgp <asn> peer‐group <group‐name> ebgp‐multihop <ttl> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
protocols bgp <asn> peer‐group <group‐name> filter‐list export <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . 428
protocols bgp <asn> peer‐group <group‐name> filter‐list import <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . 430
protocols bgp <asn> peer‐group <group‐name> local‐as <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 432
protocols bgp <asn> peer‐group <group‐name> maximum‐prefix <max‐num> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
protocols bgp <asn> peer‐group <group‐name> nexthop‐self . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436
protocols bgp <asn> peer‐group <group‐name> override‐capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
protocols bgp <asn> peer‐group <group‐name> passive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 440
protocols bgp <asn> peer‐group <group‐name> password <pwd> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442
protocols bgp <asn> peer‐group <group‐name> prefix‐list export <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444
protocols bgp <asn> peer‐group <group‐name> prefix‐list import <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446
protocols bgp <asn> peer‐group <group‐name> remote‐as <asn>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448
protocols bgp <asn> peer‐group <group‐name> remove‐private‐as . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450
protocols bgp <asn> peer‐group <group‐name> route‐map export <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . 452
protocols bgp <asn> peer‐group <group‐name> route‐map import <map‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . 454
protocols bgp <asn> peer‐group <group‐name> route‐reflector‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
protocols bgp <asn> peer‐group <group‐name> route‐server‐client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 502
protocols bgp <asn> peer‐group <group‐name> shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456
protocols bgp <asn> peer‐group <group‐name> soft‐reconfiguration inbound . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458
protocols bgp <asn> peer‐group <group‐name> ttl‐security hops <hops> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460
protocols bgp <asn> peer‐group <group‐name> unsuppress‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . 462
protocols bgp <asn> peer‐group <group‐name> update‐source <source> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464
protocols bgp <asn> peer‐group <group‐name> weight <weight>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466
protocols bgp <asn> peer‐group <group‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
protocols bgp <asn> redistribute connected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 484
protocols bgp <asn> redistribute kernel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486
protocols bgp <asn> redistribute ospf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 488
protocols bgp <asn> redistribute rip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490
BGP
R6.4 v01
Vyatta
xvii
protocols bgp <asn> redistribute static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492
protocols bgp <asn> timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
protocols bgp <asn> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
reset ip bgp <address> ipv4 unicast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
reset ip bgp <address> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
reset ip bgp all . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
reset ip bgp dampening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
reset ip bgp external ipv4 unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
reset ip bgp external . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
reset ip bgp peer‐group <group‐name> ipv4 unicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470
reset ip bgp peer‐group <group‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468
show ip bgp attribute‐info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
show ip bgp cidr‐only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
show ip bgp community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
show ip bgp community‐info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
show ip bgp community‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
show ip bgp dampened‐paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
show ip bgp filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
show ip bgp flap‐statistics cidr‐only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
show ip bgp flap‐statistics filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
show ip bgp flap‐statistics prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
show ip bgp flap‐statistics regexp <expr> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
show ip bgp flap‐statistics route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
show ip bgp flap‐statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
show ip bgp ipv4 unicast cidr‐only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
show ip bgp ipv4 unicast community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
show ip bgp ipv4 unicast community‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
show ip bgp ipv4 unicast filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
show ip bgp ipv4 unicast neighbors <id> advertised‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
show ip bgp ipv4 unicast neighbors <id> prefix‐counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
show ip bgp ipv4 unicast neighbors <id> received prefix‐filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
show ip bgp ipv4 unicast neighbors <id> received‐routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 342
show ip bgp ipv4 unicast neighbors <id> routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
show ip bgp ipv4 unicast neighbors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
show ip bgp ipv4 unicast paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
show ip bgp ipv4 unicast prefix‐list <list‐name>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
BGP
R6.4 v01
Vyatta
xviii
show ip bgp ipv4 unicast regexp <regexp> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
show ip bgp ipv4 unicast route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
show ip bgp ipv4 unicast rsclient summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504
show ip bgp ipv4 unicast statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
show ip bgp ipv4 unicast summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
show ip bgp ipv4 unicast. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
show ip bgp memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
show ip bgp neighbors <id> advertised‐routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
show ip bgp neighbors <id> dampened‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346
show ip bgp neighbors <id> flap‐statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347
show ip bgp neighbors <id> prefix‐counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348
show ip bgp neighbors <id> received prefix‐filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
show ip bgp neighbors <id> received‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350
show ip bgp neighbors <id> routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
show ip bgp neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344
show ip bgp paths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
show ip bgp prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
show ip bgp regexp <regexp>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
show ip bgp route‐map <map‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
show ip bgp rsclient <address> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505
show ip bgp scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
show ip bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
show ip route bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
show ipv6 bgp community <community> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
show ipv6 bgp community‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
show ipv6 bgp filter‐list <as‐path‐list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
show ipv6 bgp neighbors <ipv6> advertised‐routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
show ipv6 bgp neighbors <ipv6> received‐routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
show ipv6 bgp neighbors <ipv6> routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
show ipv6 bgp neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
show ipv6 bgp prefix‐list <list‐name> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
show ipv6 bgp regexp <regexp>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
show ipv6 bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
show monitoring protocols bgp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
BGP
R6.4 v01
Vyatta
xix
List of Examples
Use this list to help you locate examples you’d like to look at or try.
Example 1‐4 Verifying iBGP on R1: “show ip bgp” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Example 1‐7 Verifying eBGP on R1: “show ip bgp” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Example 1‐14 Creating an import policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Example 1‐19 Creating an export policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
BGP
R6.4 v01
Vyatta
xx
Preface
This document describes the various deployment, installation, and upgrade options
for Vyatta software.
This preface provides information about using this guide. The following topics are
presented:
BGP
•
Intended Audience
•
Organization of This Guide
•
Document Conventions
•
Vyatta Publications
R6.4 v01
Vyatta
Intended Audience xxi
Intended Audience
This guide is intended for experienced system and network administrators.
Depending on the functionality to be used, readers should have specific knowledge
in the following areas:
•
Networking and data communications
•
TCP/IP protocols
•
General router configuration
•
Routing protocols
•
Network administration
•
Network security
•
IP services
Organization of This Guide
This guide has the following aid to help you find the information you are looking for:
•
Quick List of Commands
Use this list to help you quickly locate commands.
•
List of Examples
Use this list to help you locate examples you’d like to try or look at.
This guide has the following chapters:
BGP
Chapter
Description
Page
Chapter 1: BGP Configuration
This chapter describes how to configure the Border Gateway Protocol on the Vyatta System.
1
Chapter 2: Global and Router‐Specific Configuration
This chapter describes commands for global and router‐specific configuration for BGP.
77
Chapter 3: Route Reflection
This chapter describes commands for for BGP route reflection.
188
Chapter 4: Confederations
This chapter describes commands for BGP confederations.
203
Chapter 5: Neighbors
This chapter describes commands for BGP neighbors .
209
R6.4 v01
Vyatta
Organization of This Guide xxii
Chapter 6: Peer Groups
This chapter describes commands for BGP peer 356
groups.
Chapter 7: Route Redistribution
This chapter describes commands for BGP route redistribution.
472
Chapter 8: Route Server
This chapter describes commands for BGP route server.
494
Glossary of Acronyms
BGP
506
R6.4 v01
Vyatta
Document Conventions xxiii
Document Conventions
This guide uses the following advisory paragraphs, as follows.
WARNING Warnings alert you to situations that may pose a threat to personal safety. CAUTION Cautions alert you to situations that might cause harm to your system or damage to equipment, or that may affect service.
NOTE Notes provide information you might need to avoid problems or configuration errors.
This document uses the following typographic conventions.
Monospace
Examples, command-line output, and representations of
configuration nodes.
bold Monospace
Your input: something you type at a command line.
bold
Commands, keywords, and file names, when mentioned
inline.
Objects in the user interface, such as tabs, buttons, screens,
and panes.
BGP
italics
An argument or variable where you supply a value.
<key>
A key on your keyboard, such as <Enter>. Combinations of
keys are joined by plus signs (“+”), as in <Ctrl>+c.
[ key1 | key2]
Enumerated options for completing a syntax. An example is
[enable | disable].
num1–numN
A inclusive range of numbers. An example is 1–65535, which
means 1 through 65535, inclusive.
arg1..argN
A range of enumerated values. An example is eth0..eth3,
which means eth0, eth1, eth2, or eth3.
arg[ arg...]
arg[,arg...]
A value that can optionally represent a list of elements (a
space-separated list and a comma-separated list, respectively).
R6.4 v01
Vyatta
Vyatta Publications xxiv
Vyatta Publications
Full product documentation is provided in the Vyatta technical library. To see what
documentation is available for your release, see the Guide to Vyatta Documentation.
This guide is posted with every release of Vyatta software and provides a great
starting point for finding the information you need.
Additional information is available on www.vyatta.com and www.vyatta.org.
BGP
R6.4 v01
Vyatta
1
Chapter 1: BGP Configuration
This chapter describes how to configure the Border Gateway Protocol on the Vyatta
System.
The following topics are covered:
BGP
•
BGP Overview
•
Supported Standards
•
Configuring BGP
•
Configuring IPv6 Routing with BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 2
BGP Overview
This section presents the following topics:
•
iBGP and eBGP
•
BGP Path Selection Process
•
Scalability of BGP
•
Route Flapping and Flap Damping
•
AS Paths
•
BGP Communities
•
Peer Groups
•
IPv4 and IPv6 Support
Border Gateway Protocol (BGP) is the principal inter-domain routing protocol used
on the Internet. BGP version 4 is specified in RFC 4271, which obsoletes the original
BGPv4 specification defined in RFC 1771.
The principal concept of BGP is that of the Autonomous System (AS). An AS is a
routing domain that is under one administrative authority, and which implements its
own routing policies. For example, one Internet Service Provider (ISP) would have its
own AS, while another would have its own, different, AS. Many large enterprises
also have their own AS, particularly if they are multi-homed (that is, connected to
multiple ISPs). The BGP routing protocol is used to convey network reachability
information between ASs.
Routers that are configured to run BGP between one another are known as BGP
peers or BGP neighbors. BGP uses a TCP connection on the well-known port 179 to
exchange routing information between peers. BGP peers that are configured within
the same AS are referred to as internal BGP (iBGP) peers. BGP peers that are
configured in different ASs are referred to as external BGP (eBGP) peers.
There are two basic types of BGP route exchanges that occur between peers: route
announcements and route withdrawals.
•
A route announcement tells a peer that it can reach a particular network via the
announcing router, and includes attributes associated with that path.
•
A route withdrawal tells a peer that a previously announced route is no longer
reachable via this peer.
All valid route announcements that are received on a BGP router are placed into the
router’s BGP table. (These routes are typically referred to as BGP paths.) This means
that, for a particular network prefix—for example, 10.0.0.0/8—the local BGP router
might have recorded multiple available paths: one through any of its BGP peers. For
each prefix, the BGP process uses a path selection algorithm to select the best
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 3
available path from all those learned from its peers. Once the best path has been
selected, that path becomes the candidate route from the BGP protocol for inserting
into the active routing table.
Each BGP path includes several attributes that are used by the BGP path selection
process to determine which path is the best available path. These attributes can also
be used in user-defined routing policies applied to BGP; these can allow the router to
perform additional actions on a matching path, such as determining whether to
accept or reject a route announcement.
One of the most commonly used BGP path attributes is the AS path. The AS path
lists each of the ASs by which the prefix has been announced, and is used to prevent
routing loops. The AS path is read from right to left, where the right-most AS is the
AS that originated the network prefix (that is, it was the first AS to announce
reachability for this prefix). This AS is known as the origin AS.
As a network prefix is advertised between ASs, each AS prepends its own AS number
to the AS path. For example, the AS path “4 3 2 1” indicates that AS 1 originated
the network prefix. The prefix was advertised from AS 1 to AS 2, then from AS 2 to
AS 3, and finally from AS 3 to AS 4.
Other BGP path attributes include origin, next hop, multi-exit discriminator
(“med”), local preference (“local pref”), atomic aggregate, and aggregator. These
attributes are described in more detail in another section of this document.
iBGP and eBGP
A BGP peer can be one of two types:
•
Internal BGP (iBGP) peers are peers that are configured with the same AS
number.
•
External BGP (eBGP) peers are peers that are configured with different AS
numbers.
iBGP
The BGP protocol requires that all iBGP peers within an AS have a connection to one
another, creating a full-mesh of iBGP peering connections. (The exception to this is
route reflection.) When a prefix is announced from one iBGP peer to another, the AS
path is not changed. Due to the full-mesh requirement, all iBGP peers should have
the same view of the BGP table, unless different routing policies have been applied
to some of the peers.
When a router receives an iBGP announcement, the BGP process uses the BGP best
path selection algorithm to determine whether the received announcement is the best
available path for that prefix. If it is the best available path, then the BGP process
uses this route as the BGP candidate route for insertion into the routing table, and
the BGP process announces this path to all its peers, both iBGP and eBGP peers. If it
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 4
is not the best available path, then the BGP process keeps a copy of this path in its
BGP table, so that it can be used to calculate the best available path when path
information for that prefix changes (for example, if the current best available path is
withdrawn).
The BGP ID is a unique identifier in the format of an IP address used to identify a
peer. The peering IP address is the actual IP address used for the BGP connection.
For iBGP peerings, the BGP ID and peering IP is frequently the IP address bound to
that router’s loopback interface. An iBGP session is usually contained within a local
LAN, with multiple redundant physical links between the iBGP devices. For iBGP
routes, reachability is all that is necessary, and the loopback interface is reachable so
long as at least one physical interface is operational. Because of the physical and/or
logical redundancy that exists between iBGP peers, iBGP peering on the loopback
interface works well.
Since BGP does not provide reachability information, you must make sure that each
iBGP peer knows how to reach other peers. To be able to reach one another, each
peer must have some sort of Interior Gateway Protocol (IGP) route, such as a
connected route, a static route, or a route through a dynamic routing protocol such
as RIP or OSPF, which tells them how to reach the opposite router.
eBGP
External BGP is the method that different Autonomous Systems (ASs) use to
interconnect with one another. eBGP usually takes place over WAN links, where
there may be a single physical path between eBGP peers. Alternatively, they may have
multiple eBGP peer connections to provide redundancy and/or traffic load balancing.
Redundant peers use distinct BGP sessions so that, if one session fails, another can
take over.
BGP uses an AS path to track the path of a prefix through the various ASs that send
or receive the prefix announcement. When a prefix is announced to an eBGP peer,
the local AS number is prepended to the AS path. This helps to prevent routing loops
by rejecting any prefix announcements that include the local AS number in the AS
path. Prefix announcements learned via eBGP are also analyzed using the BGP best
path selection process.
For eBGP peerings, the BGP ID and peering IP address is typically the local IP address
of the interface that is being used to connect to the eBGP peers. However if more than
one physical interface is being used for eBGP peering it is also common to use a
loopback IP address as the BGP ID, but still use the physical interface IP address as
the peering IP address.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 5
BGP ID Selection Process
It is best practice to configure the BGP ID explicitly using the protocols bgp <asn>
parameters router-id <id> command. If explicitly assigned, then this is the BGP ID
that will be used. If it is not assigned explicitly then the system will choose one
automatically. If a loopback address is configured as is not 127.0.0.1, it will be used.
If the loopback address is not used then the largest IP address assigned to an interface
in the system configuration will be used.
So, best practice suggests that the following configuration commands be run on each
BGP router to explicitly set the BGP ID. In this example a loopback address of
10.0.0.11/32 is used.
Example 1‐1 Best practice for setting the BGP ID
Router
Step
R1
vyatta@R1# set interfaces loopback lo address 10.0.0.11/32
Set the loopback address and prefix length (note the prefix length of 32). In this case 10.0.0.11/32.
R1
Set the router ID to the previously defined loopback address.
BGP
Command(s)
vyatta@R1# set protocols bgp 100 parameters router‐id 10.0.0.11
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 6
BGP Path Selection Process
The BGP process may receive advertisements from multiple peers for the same
network prefix. Each of these announcements from a peer for a prefix is called a
path. The BGP process selects the “best” path from all available paths and this path
becomes the candidate route announced by BGP for inclusion in the Routing
Information Base (RIB).
Depending on what other protocols also have candidate routes for this network
prefix, the BGP route may or may not be added to the RIB. For instance if the RIB
has candidate routes from both BGP and static routing for the same prefix, the static
route, not the BGP route, will be included in the RIB. This is because the static route
process has a lower administrative cost than the BGP process.
It is important to note that BGP will not consider paths that contain a NEXT_HOP
value that is not reachable via an entry in the RIB. For all valid paths, the Vyatta
system uses a BGP path selection process based on decision process described in RFC
4271, section 9.1. BGP paths are preferred based on the following:
•
LOCAL PREFERENCE: Prefer the path with the highest LOCAL_PREF
•
AS PATH LENGTH: Prefer the path with the shortest AS_PATH.
•
ORIGIN: Prefer the path with the lowest ORIGIN type.
•
MULTI_EXIT_DISC: Prefer the path with the lowest MED.
•
PEER TYPE: Prefer paths learned via eBGP over paths learned via iBGP.
•
IGP METRIC. Prefer paths with lower IGP metric for the path’s NEXT_HOP
address.
•
BGP ID: Prefer the path with the lowest BGP ID.
•
PEER IP: Prefer the path with the lowest peer IP address.
The best path selection process is performed as “first match and out.” This means
that two paths will be compared until the first difference in preference criteria. For
example, two paths for the same network prefix may have the same LOCAL_PREF
value, but different AS path lengths. In this case, the path with the shortest AS path
would be the “best” path. If the peer IP address is being used to select the best path,
this means that all other path criteria were the same for the available paths.
You can use the show ip bgp command to see the current best paths in the RIB.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 7
Scalability of BGP
The Border Gateway Protocol 4 specification (RFC 4271) requires that iBGP peers
be fully meshed; that is, every iBGP peer must have a connection to every other iBGP
peer. A full mesh of iBGP peers does not scale well to large ASs, which can have
hundreds of iBGP routers. To overcome scalability issues, two enhancements have
been developed for BGP:
•
BGP Confederations (RFC 3065)
•
Route Reflection (RFC 2796)
Confederations
Confederations enable you to reduce the size and complexity of the iBGP mesh. In a
BGP confederation, a single AS is divided into multiple internal sub-ASs to help keep
the number of iBGP peer connections manageable. Each sub-AS is assigned its own
AS number; this is typically assigned from the private AS number space, which ranges
from 64512 to 65534. Within a sub-AS, all the standard iBGP rules, including
full-mesh peering, apply. The connections between confederation sub-ASs use eBGP
peering. One or more eBGP connections can be made between each sub-AS. The
sub-ASs are grouped as a confederation, which advertises as a single AS to external
peers.
Figure 1-1 shows the large number of iBGP connections that must be configured in
even a moderately sized AS. In this example, 14 routers are participating in iBGP.
Figure 1‐1 iBGP full mesh
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 8
Figure 1-2 shows a BGP confederation that splits the single AS shown in Figure 1-1
into three sub-ASs, which each use private AS numbers. Within each sub-AS, all of
the iBGP peers are fully meshed. The sub-ASs are connected to one another using an
eBGP connection.
Figure 1‐2 BGP confederation
Route Reflection
Another technology designed to help ASs with large numbers of iBGP peers is route
reflection. In a standard BGP implementation, all iBGP peers must be fully meshed.
because of this requirement, when an iBGP peer learns a route from another iBGP
peer, the receiving router does not forward the route to any of its iBGP peers, since
these routers should have learned the route directly from the announcing router.
In a route reflector environment the iBGP peers are no longer fully meshed. Instead,
each iBGP peer has an iBGP connection to one or more route reflectors (RRs).
Routers configured with a connection to an RR server are referred to as RR clients.
Only the RR server is configured to be aware that the RR client is part of an RR
configuration; from the RR client’s point of view, it is configured normally, and does
not have any awareness that it is part of a RR configuration.
In route reflection, internal peers of an RR server are categorized into two types:
BGP
•
Client peers. The RR server and its client peers form a cluster. Within a cluster,
client peers need not be fully meshed, but must have an iBGP connection to at
least one RR in the cluster.
•
Non-client peers. Non-client peers, including the RR server, must be fully
meshed.
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 9
An RR environment is unlike a regular environment, where iBGP peers never
forward a route update to other iBGP peers (which is the reason why each iBGP peer
must peer with all other peers). When an RR server receives an iBGP update from an
RR client, these route updates can also be sent to all other RR clients. When an RR
server receives a route update from a peer, it selects the best path based on its path
selection rule. After the best path is selected, the RR server chooses its action
depending on the type of the peer from which it learned the best path.
•
If the route was learned from a client peer, the RR reflects the route to both client
and non-client peers. All iBGP updates from client peers are reflected to all other
client peers in the cluster. This is done regardless of whether the update was the
best path for the RR itself.
•
If the route was learned from a non-client iBGP peer, it is reflected out to all RR
client peers.
•
If the route was learned from an eBGP peer, the route is reflected to all RR clients
and all non-clients.
Figure 1-3 shows again the full mesh of iBGP connections in even a moderately sized
AS.
Figure 1‐3 iBGP full mesh
Figure 1-4 shows how introducing route reflection into the AS dramatically reduces
the number of iBGP connections required within the AS.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 10
Figure 1‐4 iBGP route reflection
Note that to prevent looping, clients must not peer with RRs outside of the cluster.
To achieve redundancy, more than one RR server can be configured within a cluster.
Also, to scale to very large networks, a large AS can be configured to have multiple
clusters with redundant RR servers, where the RR servers are all configured with a
full mesh of iBGP connections between the RR servers.
Route Flapping and Flap Damping
Route flapping is a situation where a route fluctuates repeatedly between being
announced, then withdrawn, then announced, then withdrawn, and so on. In this
situation, a BGP system will send an excessive number of update messages
advertising network reachability information.
Route flapping can cause several different issues. First, each time a new route is
learned or withdrawn the BGP best path selection process for that prefix must be
executed, which can result in high CPU utilization. If a large enough number of
routes are flapping, the BGP process may not be able to converge sufficiently quickly.
Second, the route flapping issue can become amplified as it passes from peer to peer.
For example, if a router with two peers flaps a route, and those two peers each have
10 peers, the flapping route affects 20 BGP routers.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 11
Route damping is intended to minimize the propagation of update messages between
BGP peers for flapping routes. This reduces the load on these devices without unduly
impacting the route convergence time for stable routes.
When route damping is enabled, a route is assigned a penalty each time it “flaps”
(that is, each time it is announced and then withdrawn within a short interval). If the
penalty exceeds 1000 (its suppress value) the route is suppressed.
After the route has been stable for a configured interval (its half-life) the penalty is
reduced by half. Subsequently, the penalty is reduced every five seconds. When the
penalty falls below a configured value (its reuse value), the route is unsuppressed.
The penalty applied to a route will never exceed the maximum penalty, which is
computed from configured attributes as follows:
Maximum penalty = reuse * 2^(max‐suppress-time/half-life)
While the route is being “damped,” updates and withdrawals for this route from a
peer are ignored. This helps to localize the route flapping to a particular peering
connection.
AS Paths
An AS path is a path to a destination in the Border Gateway Protocol (BGP). The
path is represented as a sequence of AS numbers, which are the numbers uniquely
identifying BGP autonomous systems. Each AS number represents an autonomous
system (which may be comprised of multiple networks) that a packet traverses if it
takes the associated route to the destination.
For a packet to reach a destination using this route, it traverses the listed ASs from
the leftmost AS number to the rightmost, where the rightmost is the AS immediately
preceding its destination.
Using policies, match conditions can be defined based on all or portions of the AS
path. To do this, you can either specify the AS path directly in a policy command
using a regular expression in the as-path attribute, or create a named AS path regular
expression using the as-path-list attribute and including the name in a policy
command.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration BGP Overview 12
BGP Communities
All BGP updates include a BGP attribute called the communities path attribute. The
communities path attribute allows ASs to “tag” prefix announcements. This tag can
then be used by routing policies to modify the normal behavior for that prefix
announcement. For example, an AS could choose to filter out all prefix
announcements containing a community value that identifies the prefix as a
customer-generated prefix, instead only announcing the summary prefix for all
customer prefixes. It is important to note that the community path attribute is carried
in BGP update messages, which allows ASs not directly connected to each other to
share information about a prefix.
The format for community identifiers is defined in RFC 1997: “BGP Communities
Attribute.” The community identifier is a 32-bit value, where the first two bytes of
the value are the AS number and the second two bytes are an arbitrary value defined
by the AS. This format can be represented as AA:NN, where AA is the AS number
of the AS adding the community identifier to the community path attribute, and NN
represents a user-defined policy value.
There are two types of BGP communities: “well-known” communities and
user-defined or private communities.
The Vyatta system recognizes the following BGP well-known communities as per
RFC 1997:
NO_EXPORT: Allows a BGP speaker to specify that redistribution should extend
only to the neighbouring AS. All routes received carrying a communities attribute
containing this value are not advertised outside a BGP confederation boundary (a
stand-alone autonomous system that is not part of a confederation should be
considered a confederation itself).
NO_ADVERTISE: All routes received carrying a communities attribute containing
this value are not advertised to other BGP peers.
LOCAL_AS: All routes received carrying a communities attribute containing this
value are not advertised to other BGP peers.
In additon, the Vyatta system recognizes the INTERNET community. The
INTERNET community is not, strictly speaking, a well-known community. (It is not,
for example, mentioned in RFC 1997.) You can use the INTERNET community
when you would use a “permit all” statement; for example, at the end of a
community list. (Like access lists, community lists have an implicit “deny all”
statement at their end.) The “permit INTERNET” statement is equivalent to the
“permit any” statement, matching any community in the IP community list.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Supported Standards 13
Peer Groups
In order to simplify the configuration of multiple similar peer sessions, “peer groups”
are available. Configuring a peer group is the same as configuring an individual peer.
The peer group configuration applies to all members of the peer group. Peer groups
are created and configured using “protocols bgp <asn> peer-group <group-name>”
on page 361. Peers are added to a peer group using “protocols bgp <asn> neighbor
<id> peer-group <group-name>” on page 302.
IPv4 and IPv6 Support
The Vyatta BGP implementation supports the following:
•
Peering sessions between IPv4 peers
•
Peering sessions between IPv6 peers
•
IPv4 routing information can be carried over either IPv4 or IPv6 peering sessions
•
IPv6 routing information can be carried over either IPv4 or IPv6 peering sessions
•
Both IPv4 and IPv6 routing information can be carried over a single IPv4 or IPv6
peering session
NOTE IPv4 routes over IPv6 sessions and IPv6 routes over IPv4 sessions cannot currently be seen via show commands.
IPv4 routes can be exchanged after BGP has been enabled on the system (using the
show monitoring protocols bgp command).
IPv6 routes can be exchanged once either you have enabled any of the IPv6 unicast
address family (using the protocols bgp <asn> address-family ipv6-unicast
command), the IPv6 unicast neighbor address family (using the protocols bgp <asn>
neighbor <id> address-family ipv6-unicast command), or the IPv6 unicast peer group
address family (using the protocols bgp <asn> peer-group <group-name>
address-family ipv6-unicast command).
Supported Standards
The Vyatta implementation of BGP complies with the following standards:
BGP
•
RFC 4271: A Border Gateway Protocol (BGP-4)
•
RFC 4273: Definitions of Managed Objects for BGP-4
•
RFC 2842: Capabilities Advertisement with BGP-4
•
RFC 4760: Multiprotocol Extensions for BGP-4
•
RFC 1997: BGP Communities Attribute
•
RFC 3065: Autonomous System Confederations for BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration •
Configuring BGP 14
RFC 2796: BGP Route Reflection - An Alternative to Full Mesh IBGP
Configuring BGP
This section presents the following topics:
•
Basic iBGP Configuration
•
Verifying the iBGP Configuration
•
Basic eBGP Configuration
•
Verifying the eBGP Configuration
•
Originating a Route to eBGP Neighbors
•
Verifying the Route Origination
•
Inbound Route Filtering
•
Verifying the Inbound Filter
•
Outbound Route Filtering
•
Verifying the Outbound Filter
•
Confederations
•
Verifying the Confederation
•
Route Reflectors
•
Verifying the Route Reflector
•
Route Redirection
This section presents sample configurations for BGP. The configuration examples are
based on the reference diagram in Figure 1-5.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 15
Figure 1‐5 BGP configuration reference diagram
Basic iBGP Configuration
In this section, you configure iBGP on the routers labeled R1, R2, R3, and R4 in the
reference network diagram. Each router has an iBGP peering connection to each of
the other iBGP routers in the network, satisfying the full mesh iBGP peering
requirement.
In the example the iBGP peering connections are established between iBGP neighbors
using the loopback interface IP addresses. This is typical practice, particularly when
there are redundant connections between the iBGP routers.
In order for the routers to be able to reach each other using the loopback IP address,
the loopback IP addresses must be reachable via an entry in the router’s routing table.
This requires some form of Internal Gateway Protocol (IGP). In the example here,
we will use a basic Open Shortest Path First (OSPF) configuration to announce the
loopback addresses between neighbors.
Figure 1-6 shows the BGP connections after you have completed the iBGP
configuration.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 16
Figure 1‐6 Basic iBGP configuration
This example assumes that you have already configured the router interfaces; only
the steps required to implement BGP are shown.
To create a basic iBGP configuration, perform the following steps in configuration
mode:
Example 1‐2 Basic iBGP configuration
Router
Step
Command(s)
R1
Advertize the loopback address within the OSPF area. This is needed for iBGP.
vyatta@R1# set protocols ospf area 0.0.0.0 network 10.0.0.11/32 R1
Advertize the local network within the OSPF area.
vyatta@R1# set protocols ospf area 0.0.0.0 network 172.16.0.0/24 R1
Advertize the external network within the OSPF area.
vyatta@R1# set protocols ospf area 0.0.0.0 network 88.88.88.0/30 R1
Set the router ID to be the loopback IP address.
vyatta@R1# set protocols ospf parameters router‐id 10.0.0.11
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 17
Example 1‐2 Basic iBGP configuration
R1
Configure the eth0 interface to be a passive interface (i.e. don’t advertize our internal network routes over the external network).
R1
Create an iBGP peer for R2. vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R1
Define the IP address on the local R1 router that is used to peer with the R2 router.
R1
Create an iBGP peer for R3. vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R1
Define the IP address on the local R1 router that is used to peer with the R3 router.
R1
Create an iBGP peer for R4. vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R1
Define the IP address on the local R1 router that is used to peer with the R4 router.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 update‐source 10.0.0.11
R1
Set the router ID to the loopback address, which on R1 is 10.0.0.11.
vyatta@R1# set protocols bgp 100 parameters router‐id 10.0.0.11
R1
Commit the configuration.
vyatta@R1# commit
BGP
vyatta@R1# set protocols ospf passive‐interface eth0
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 update‐source 10.0.0.11
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 update‐source 10.0.0.11
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 18
Example 1‐2 Basic iBGP configuration
R1
Display the configuration.
vyatta@R1# show protocols
bgp 100 {
neighbor 10.0.0.22 {
remote‐as 100
update‐source 10.0.0.11
}
neighbor 10.0.0.33 {
remote‐as 100
update‐source 10.0.0.11
}
neighbor 10.0.0.44 {
remote‐as 100
update‐source 10.0.0.11
}
parameters {
router‐id 10.0.0.11
}
}
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
network 88.88.88.0/30
network 10.0.0.11/32
}
parameters {
router‐id 10.0.0.11
}
passive‐interface eth0
}
R2
Advertize the loopback address within the OSPF area. This is needed for iBGP.
vyatta@R2# set protocols ospf area 0.0.0.0 network 10.0.0.22/32 R2
Advertize the local network within the OSPF area.
vyatta@R2# set protocols ospf area 0.0.0.0 network 172.16.0.0/24 R2
Set the router ID to be the loopback IP address.
vyatta@R2# set protocols ospf parameters router‐id 10.0.0.22
R2
Create an iBGP peer for R1. vyatta@R2# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 19
Example 1‐2 Basic iBGP configuration
R2
Define the IP address on the local R2 router that is used to peer with the R1 router.
R2
Create an iBGP peer for R3. vyatta@R2# set protocols bgp 100 neighbor 10.0.0.33 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R2
Define the IP address on the local R2 router that is used to peer with the R3 router.
R2
Create an iBGP peer for R4. vyatta@R2# set protocols bgp 100 neighbor 10.0.0.44 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R2
Define the IP address on the local R2 router that is used to peer with the R4 router.
vyatta@R2# set protocols bgp 100 neighbor 10.0.0.44 update‐source 10.0.0.22
R2
Set the router ID to the loopback address, which on R2 is 10.0.0.22.
vyatta@R2# set protocols bgp 100 parameters router‐id 10.0.0.22
BGP
vyatta@R2# set protocols bgp 100 neighbor 10.0.0.11 update‐source 10.0.0.22
vyatta@R2# set protocols bgp 100 neighbor 10.0.0.33 update‐source 10.0.0.22
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 20
Example 1‐2 Basic iBGP configuration
R2
Display the configuration.
vyatta@R2# show protocols
bgp 100 {
neighbor 10.0.0.11 {
remote‐as 100
update‐source 10.0.0.22
}
neighbor 10.0.0.33 {
remote‐as 100
update‐source 10.0.0.22
}
neighbor 10.0.0.44 {
remote‐as 100
update‐source 10.0.0.22
}
parameters {
router‐id 10.0.0.22
}
}
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
network 10.0.0.22/32
}
parameters {
router‐id 10.0.0.22
}
}
R3
Advertize the loopback address within the OSPF area. This is needed for iBGP.
vyatta@R3# set protocols ospf area 0.0.0.0 network 10.0.0.33/32 R3
Advertize the local network within the OSPF area.
vyatta@R3# set protocols ospf area 0.0.0.0 network 172.16.0.0/24 R3
Set the router ID to be the loopback IP address.
vyatta@R3# set protocols ospf parameters router‐id 10.0.0.33
R3
Create an iBGP peer for R1. vyatta@R3# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 21
Example 1‐2 Basic iBGP configuration
R3
Define the IP address on the local R3 router that is used to peer with the R1 router.
R3
Create an iBGP peer for R2. vyatta@R3# set protocols bgp 100 neighbor 10.0.0.22 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R3
Define the IP address on the local R3 router that is used to peer with the R2 router.
R3
Create an iBGP peer for R4. vyatta@R3# set protocols bgp 100 neighbor 10.0.0.44 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R3
Define the IP address on the local R3 router that is used to peer with the R4 router.
vyatta@R3# set protocols bgp 100 neighbor 10.0.0.44 update‐source 10.0.0.33
R3
Set the router ID to the loopback address, which on R3 is 10.0.0.33.
vyatta@R3# set protocols bgp 100 parameters router‐id 10.0.0.33
R3
Commit the configuration.
vyatta@R3# commit
BGP
vyatta@R3# set protocols bgp 100 neighbor 10.0.0.11 update‐source 10.0.0.33
vyatta@R3# set protocols bgp 100 neighbor 10.0.0.22 update‐source 10.0.0.33
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 22
Example 1‐2 Basic iBGP configuration
R3
Display the configuration.
vyatta@R3# show protocols
bgp 100 {
neighbor 10.0.0.11 {
remote‐as 100
update‐source 10.0.0.33
}
neighbor 10.0.0.22 {
remote‐as 100
update‐source 10.0.0.33
}
neighbor 10.0.0.44 {
remote‐as 100
update‐source 10.0.0.33
}
parameters {
router‐id 10.0.0.33
}
}
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
network 10.0.0.33/32
}
parameters {
router‐id 10.0.0.33
}
}
R4
Advertize the loopback address within the OSPF area. This is needed for iBGP.
vyatta@R4# set protocols ospf area 0.0.0.0 network 10.0.0.44/32 R4
Advertize the local network within the OSPF area.
vyatta@R4# set protocols ospf area 0.0.0.0 network 172.16.0.0/24 R4
Advertize the external network within the OSPF area.
vyatta@R4# set protocols ospf area 0.0.0.0 network 99.99.99.0/30 R4
Set the router ID to be the loopback IP address.
vyatta@R4# set protocols ospf parameters router‐id 10.0.0.44
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 23
Example 1‐2 Basic iBGP configuration
R4
Configure the eth0 interface to be a passive interface (i.e. don’t advertize our internal network routes over the external network).
R4
Create an iBGP peer for R1. vyatta@R4# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R4
Define the IP address on the local R4 router that is used to peer with the R1 router.
R4
Create an iBGP peer for R2. vyatta@R4# set protocols bgp 100 neighbor 10.0.0.22 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R4
Define the IP address on the local R4 router that is used to peer with the R2 router.
R4
Create an iBGP peer for R3. vyatta@R4# set protocols bgp 100 neighbor 10.0.0.33 remote‐as 100
The peer is an iBGP peer because it resides within the same AS as this router.
R4
Define the IP address on the local R4 router that is used to peer with the R3 router.
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.33 update‐source 10.0.0.44
R4
Set the router ID to the loopback address, which on R4 is 10.0.0.44.
vyatta@R4# set protocols bgp 100 parameters router‐id 10.0.0.44
R4
Commit the configuration.
vyatta@R4# commit
BGP
vyatta@R4# set protocols ospf passive‐interface eth0
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.11 update‐source 10.0.0.44
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.22 update‐source 10.0.0.44
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 24
Example 1‐2 Basic iBGP configuration
R4
Display the configuration.
vyatta@R4# show protocols
bgp 100 {
neighbor 10.0.0.11 {
remote‐as 100
update‐source 10.0.0.44
}
neighbor 10.0.0.22 {
remote‐as 100
update‐source 10.0.0.44
}
neighbor 10.0.0.33 {
remote‐as 100
update‐source 10.0.0.44
}
parameters {
router‐id 10.0.0.44
}
}
ospf {
area 0.0.0.0 {
network 172.16.0.0/24
network 99.99.99.0/30
network 10.0.0.44/32
}
parameters {
router‐id 10.0.0.44
}
passive‐interface eth0
}
Verifying the iBGP Configuration
The following commands can be used to verify the iBGP configuration.
R1: show ip bgp summary
Example 1-3 shows the output of the show ip bgp summary command for router R1
at this stage of the configuration.
Example 1‐3 Verifying iBGP on R1: ”show ip bgp summary”
vyatta@R1:~$ show ip bgp summary
BGP router identifier 10.0.0.11, local AS number 100
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 25
RIB entries 1, using 64 bytes of memory
Peers 3, using 7560 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.22 4 100 6 10 0 0 0 00:04:18 0
10.0.0.33 4 100 6 10 0 0 0 00:04:14 0
10.0.0.44 4 100 5 6 0 0 0 00:02:55 0
Total number of neighbors 3
vyatta@R1:~$
The most important fields in the output for show ip bgp summary are the Up/Down
and State fields. All the iBGP peers for R1 show times in the Up/Down field, which
means the connection has been “established” for that period of time. The established
state indicates that the peers have successfully created a BGP connection between one
another, and are now able to send and receive BGP update messages.
If a peer shows in either Active or Idle in the State field, it means there is some issue
that is keeping the BGP peers from forming an adjacency.
•
The Active state identifies that the local router is actively trying to establish a
TCP connection to the remote peer. You may see this if the local peer has been
configured, but the remote peer is unreachable or has not been configured.
•
The Idle state indicates that the local router has not allocated any resources for
that peer connection, so any incoming connection requests will be refused.
R1: show ip bgp
Because we have not configured any routing announcements yet, the BGP table is
currently empty. This can be seen by the output of show ip bgp for R1, which is
shown in Example 1-4.
Example 1‐4 Verifying iBGP on R1: “show ip bgp”
vyatta@R1:~$ show ip bgp
No BGP network exists
vyatta@R1:~$
Basic eBGP Configuration
In this section, you configure eBGP on the routers labeled R1 and R4 in the reference
network diagram. Router R1 is peering with an eBGP neighbor that is configured to
be in AS 200 and router R4 is peering with an eBGP neighbor in AS 300.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 26
In this example, the eBGP peering connections are established between eBGP
neighbors using the physical interface IP addresses. This is a common configuration
for eBGP peers. If the link between the peers goes down, the peering relationship
should also go down since there is no redundancy.
After the basic eBGP configuration has been completed, the network should look as
shown in Figure 1-7.
Figure 1‐7 Basic eBGP configuration
This example assumes the following:
•
The configuration in Example 1-6 has already been performed.
•
The eBGP peers connecting to R1 and R4 have been properly configured for BGP.
To create a basic eBGP configuration, perform the following steps in configuration
mode:
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 27
Example 1‐5 Basic eBGP configuration
Router
Step
Command(s)
R1
vyatta@R1# set protocols bgp neighbor 88.88.88.2 remote‐as Create an eBGP peer for 200
R1. The peer is an eBGP peer because it resides in a different AS than this router.
R1
Commit the configuration.
R4
vyatta@R4# set protocols bgp neighbor 99.99.99.2 remote‐as Create an eBGP peer for 300
R4. The peer is an eBGP peer because it resides in a different AS than this router.
R4
Commit the configuration.
vyatta@R1# commit
vyatta@R4# commit
Verifying the eBGP Configuration
The following commands can be used to verify the eBGP configuration. Note that
the output shown for these commands would be obtained after the configuration for
both router R1 and router R4 has been completed.
R1: show ip bgp summary
Example 1-6 shows the output of the show ip bgp summary command for router R1
at this stage of the configuration.
Example 1‐6 Verifying eBGP on R1: “show ip bgp summary”
vyatta@R1:~$ show ip bgp summary
BGP router identifier 10.0.0.11, local AS number 100
RIB entries 23, using 1472 bytes of memory
Peers 4, using 10080 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.22 4 100 40 44 0 0 0 00:38:23
0
10.0.0.33 4 100 40 44 0 0 0 00:38:22
0
10.0.0.44 4 100 43 47 0 0 0 00:38:22
0
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 28
88.88.88.2 4 200 4 5 0 0 0 00:01:22
0
Total number of neighbors 4
vyatta@R1:~$ After adding the eBGP peer 88.88.88.2 (the BGP ID configured for the router
connected to AS 200) to R1 we can see that the connection to the new peer is
established (in the Up/Down field). This indicates that the peer was properly
preconfigured for this connection.
Additionally you may notice that the MsgRcvd and MsgSent fields for peer
88.88.88.2 shows “4” and “5” respectively. This shows that R1 has received four
BGP messages from 88.88.88.2 and sent it five, which are associated with the
connection to the peer (the show ip bgp neighbors command can be used to provide
additional detail). Also, you can see that router R1 has received no route prefixes
(PfxRcd column) from either 10.0.0.44 or from 88.88.88.2. This indicates that,
though the BGP neighbors are communicating, they are not sending any prefixes.
This is the way is should be at this point in the example as we have not yet configured
routing announcements on any of the BGP peers.
R1: show ip bgp
Again, because we have not configured any routing announcements, the BGP table
is currently empty. This can be seen by the output of show ip bgp for R1, which is
shown in Example 1-7.
Example 1‐7 Verifying eBGP on R1: “show ip bgp”
vyatta@R1:~$ show ip bgp
No BGP network exists
vyatta@R1:~$
Originating a Route to eBGP Neighbors
One of the main requirements for BGP configurations is to originate network
prefixes to BGP peers. On the Vyatta router this is accomplished using the network
option within the BGP configuration.
In this section, you originate the network prefix from both the R1 and R4 routers.
This is shown in Figure 1-8.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 29
NOTE We assume that the routers in AS200 and AS300 are configured appropriately as eBGP peers and have routes to advertise as well.
NOTE The example in this section assumes that the desired network to originate to our BGP peers is 172.16.0.0/24, which is a private RFC 1918 network address. Typically, the router would be originating a public IP network assigned by an Internet routing registry such as the American Registry for Internet Numbers (ARIN).
Figure 1‐8 Originating a route to eBGP neighbors
172.16.0.0/24
172 .16.0.0/24
This example assumes that the configurations in previous sections have been
performed.
To originate a route to eBGP neighbors, perform the following steps in configuration
mode:
Example 1‐8 Originating routes to eBGP neighbors
Router
Step
Command(s)
R1
Advertize the local network to BGP. vyatta@R1# set protocols bgp 100 network 172.16.0.0/24
R1
Commit the configuration.
vyatta@R1# commit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 30
Example 1‐8 Originating routes to eBGP neighbors
R4
Advertize the local network to BGP.
vyatta@R4# set protocols bgp 100 network 172.16.0.0/24
R4
Commit the configuration.
vyatta@R4# commit
Verifying the Route Origination
The following commands can be used to verify the route origination configuration.
R1: show ip bgp summary
Example 1-9 shows the output of the show ip bgp summary command for router R1
at this stage of the configuration. The MsgSent column indicates that the router has
been sending BGP messages, showing the number of BGP messages that have been
sent to each peer.
Example 1‐9 Verifying route origination on R1: “show ip bgp summary”
vyatta@R1:~$ show ip bgp summary
BGP router identifier 10.0.0.11, local AS number 100
RIB entries 25, using 1600 bytes of memory
Peers 4, using 10080 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.22 4 100 50 55 0 0 0 00:48:02 0
10.0.0.33 4 100 50 55 0 0 0 00:48:01 0
10.0.0.44 4 100 54 58 0 0 0 00:16:30
7
88.88.88.2 4 200 4
5
0 0 0 00:11:01
5
Total number of neighbors 4
vyatta@R1:~$
Additionally you may notice that the MsgRcvd and MsgSent fields for peer
88.88.88.2 shows “4” and “5” respectively. This shows that R1 has received four
BGP messages from 88.88.88.2 and sent it five, which are associated with the
connection to the peer (the show ip bgp neighbors command can be used to provide
additional detail). Also, you can see that router R1 has received seven route prefixes
(PfxRcd column) from 10.0.0.44 and five route prefixes from 88.88.88.2. The
prefixes received can be seen using the show ip bgp command as follows.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 31
R1: show ip bgp
Example 1-10 shows the output of the show ip bgp command for router R1 at this
stage of the configuration.
Example 1‐10 Verifying eBGP on R1: “show ip bgp”
vyatta@R1:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.0.0.0/24 88.88.88.2 0 0 200 i
*> 2.1.0.0/24 88.88.88.2 0 0 200 i
*> 2.2.0.0/24 88.88.88.2 0 0 200 i
*>i3.0.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.1.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.2.0.0/24 99.99.99.2 0 100 0 300 i
*> 12.0.0.0 88.88.88.2 0 0 200 i
*>i13.0.0.0/24 99.99.99.2 0 100 0 300 i
*> 88.88.88.0/30 88.88.88.2 0 0 200 i
*>i99.99.99.0/30 99.99.99.2 0 100 0 300 i
*>i172.16.128.0/24 99.99.99.2 0 100 0 300 i
*>i192.168.2.0 99.99.99.2 0 100 0 300 i
Total number of prefixes 12
vyatta@R1:~$
From this output we can see that R1 knows about twelve prefixes within BGP, five
from AS200 and seven from AS300.
There are two symbols that are displayed at the beginning of each of the prefixes
shown in the output of show ip bgp. The first symbol is the status code for a valid
route, which is an asterisk (“*”). Essentially all routes shown in the BGP table should
be preceded by this symbol. The second symbol is the greater than character (“>”),
which indicates which path is the best available path as determined by the BGP best
path selection process. The show ip bgp command shows only the best path to each
peer.
R1: show ip route bgp
Example 1-11 shows the output of the show ip route bgp command for router R1 at
this stage of the configuration.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 32
Example 1‐11 Verifying eBGP on R1: “show ip route bgp”
vyatta@R1:~$ show ip route bgp
Codes: K ‐ kernel route, C ‐ connected, S ‐ static, R ‐ RIP, O ‐ OSPF,
I ‐ ISIS, B ‐ BGP, > ‐ selected route, * ‐ FIB route
B>* 2.0.0.0/24 [20/0] via 88.88.88.2, eth0, 00:06:28
B>* 2.1.0.0/24 [20/0] via 88.88.88.2, eth0, 00:06:28
B>* 2.2.0.0/24 [20/0] via 88.88.88.2, eth0, 00:06:28
B>* 3.0.0.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
B>* 3.1.0.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
B>* 3.2.0.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
B>* 12.0.0.0/8 [20/0] via 88.88.88.2, eth0, 00:06:28
B>* 13.0.0.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
B 88.88.88.0/30 [20/0] via 88.88.88.2 inactive, 00:06:28
B 99.99.99.0/30 [200/0] via 99.99.99.2 inactive, 00:06:56
B>* 172.16.128.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
B>* 192.168.2.0/24 [200/0] via 99.99.99.2, eth1 (recursive via 172.16.0.4), 00:06:56
vyatta@R1:~$
The show ip route bgp command displays the routes in the RIB that were learned via
BGP. This is different from the output of show ip bgp, which shows all paths learned
via BGP regardless of whether it is the best BGP path and whether the BGP candidate
to the RIB for the prefix is the best route (for example, it has the lowest admin cost).
The output for the same operational BGP commands run on router R4 yields similar
results.
R4: show ip bgp summary
Example 1-12 shows the output of the show ip bgp summary command for router
R4 at this stage of the configuration.
Example 1‐12 Verifying eBGP on R4: “show ip bgp summary”
vyatta@R4:~$ show ip bgp summary
BGP router identifier 10.0.0.44, local AS number 100
RIB entries 23, using 1472 bytes of memory
Peers 4, using 10080 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.11 4 100 511 512 0 0 0 00:13:01 5
10.0.0.22 4 100 495 507 0 0 0 08:12:22 0
10.0.0.33 4 100 492 511 0 0 0 08:01:00 0
99.99.99.2 4 300 11 12 0 0 0 00:08:03 7
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 33
Total number of neighbors 4
vyatta@R4:~$
R4: show ip bgp
Example 1-13 shows the output of the show ip bgp command for router R4 at this
stage of the configuration.
Example 1‐13 Verifying eBGP on R4: “show ip bgp ”
vyatta@R4:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.44
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i2.0.0.0/24 88.88.88.2 0 100 0 200 i
*>i2.1.0.0/24 88.88.88.2 0 100 0 200 i
*>i2.2.0.0/24 88.88.88.2 0 100 0 200 i
*> 3.0.0.0/24 99.99.99.2 0 0 300 i
*> 3.1.0.0/24 99.99.99.2 0 0 300 i
*> 3.2.0.0/24 99.99.99.2 0 0 300 i
*>i12.0.0.0 88.88.88.2 0 100 0 200 i
*> 13.0.0.0/24 99.99.99.2 0 0 300 i
*>i88.88.88.0/30 88.88.88.2 0 100 0 200 i
*> 99.99.99.0/30 99.99.99.2 0 0 300 i
*> 172.16.128.0/24 99.99.99.2 0 0 300 i
*> 192.168.2.0 99.99.99.2 0 0 300 i
Total number of prefixes 12
vyatta@R4:~$
Router R4’s BGP table contains the paths it learned from its eBGP peer, as well as the
paths it learned from its iBGP neighbor R1.
Inbound Route Filtering
A common requirement for BGP configurations is to filter inbound routing
announcements from a BGP peer. On the Vyatta system this is accomplished using
routing policies that are then applied to the BGP process as “import” policies. In this
instance we use prefix lists in conjunction with route maps to accomplish this.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 34
Example 1-14 creates the following inbound filtering policies:
•
R1 should only accept network 12.0.0.0/8 from its eBGP peer, and reject
everything else.
•
R4 should allow all Internet routes, but reject all RFC 1918 networks from its
eBGP peer.
This import policy is shown in Figure 1-9.
NOTE We assume that the routers in AS100 have been configured for iBGP and eBGP as shown and that the routers in AS200 and AS300 are configured appropriately as eBGP peers.
Figure 1‐9 Filtering inbound routes
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 35
To create this inbound route filter, perform the following steps in configuration mode:
Example 1‐14 Creating an import policy
Router
Step
Command(s)
R1
Create a list of prefixes to allow. In this case we just have one ‐ 12.0.0.0/8.
vyatta@R1# set policy prefix‐list ALLOW‐PREFIXES rule 1 action permit
vyatta@R1# set policy prefix‐list ALLOW‐PREFIXES rule 1 prefix 12.0.0.0/8
R1
vyatta@R1# set policy route‐map eBGP‐IMPORT rule 10 action permit
Create a route map rule to vyatta@R1# set policy route‐map eBGP‐IMPORT rule 10 match ip permit all prefixes address prefix‐list ALLOW‐PREFIXES
in our list.
R1
Create a route map rule to deny all other prefixes.
R1
Assign the route vyatta@R1# set protocols bgp 100 neighbor 88.88.88.2 route‐map import eBGP‐IMPORT
map policy created as the import route map policy for AS 200.
R1
Commit the configuration.
vyatta@R1# commit
R1
Reset the BGP session to the peer so that the new policies are enabled.
vyatta@R1# run reset ip bgp 88.88.88.2
BGP
vyatta@R1# set policy route‐map eBGP‐IMPORT rule 20 action deny
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 36
Example 1‐14 Creating an import policy
R1
Display the policy vyatta@R1# show policy
configuration.
prefix‐list ALLOW‐PREFIXES {
rule 1 {
action permit
prefix 12.0.0.0/8
}
}
route‐map eBGP‐IMPORT {
rule 10 {
action permit
match {
ip {
address {
prefix‐list ALLOW‐PREFIXES
}
}
}
}
rule 20 {
action deny
}
}
vyatta@R1#
R1
Display the BGP configuration for eBGP neighbor 88.88.88.2.
vyatta@R1# show protocols bgp 100 neighbor 88.88.88.2
remote‐as 200
route‐map {
import eBGP‐IMPORT
}
vyatta@R1#
R4
Create a rule to match any prefix from 10.0.0.0/8 to 32.
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 1 action permit
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 1 le 32
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 1 prefix 10.0.0.0/8
R4
Create a rule to match any prefix from 172.16.0.0/12 to 32.
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 2 action permit
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 2 le 32
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 2 prefix 172.16.0.0/12
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 37
Example 1‐14 Creating an import policy
R4
Create a rule to match any prefix from 192.168.0.0/16 to 32.
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 3 action permit
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 3 le 32
vyatta@R4# set policy prefix‐list RFC1918PREFIXES rule 3 prefix 192.168.0.0/16
R4
Create a route map rule to deny all prefixes in our list.
vyatta@R4# set policy route‐map eBGP‐IMPORT rule 10 action deny
vyatta@R4# set policy route‐map eBGP‐IMPORT rule 10 match ip address prefix‐list RFC1918PREFIXES
R4
Create a route map rule to permit all other prefixes.
vyatta@R4# set policy route‐map eBGP‐IMPORT rule 20 action permit
R4
Assign the route vyatta@R4# set protocols bgp 100 neighbor 99.99.99.2 route‐map import eBGP‐IMPORT
map policy created as the import route map policy for AS 300.
R4
Commit the configuration.
vyatta@R4# commit
R4
Reset the BGP session to the peer so that the new policies are enabled.
vyatta@R1# run reset ip bgp 99.99.99.2
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 38
Example 1‐14 Creating an import policy
R4
Display the policy vyatta@R4# show policy
configuration.
prefix‐list RFC1918PREFIXES {
rule 1 {
action permit
le 32
prefix 10.0.0.0/8
}
rule 2 {
action permit
le 32
prefix 172.16.0.0/12
}
rule 3 {
action permit
le 32
prefix 192.168.0.0/16
}
}
route‐map eBGP‐IMPORT {
rule 10 {
action deny
match {
ip {
address {
prefix‐list RFC1918PREFIXES
}
}
}
}
rule 20 {
action permit
}
}
vyatta@R4#
R4
Display the BGP configuration for eBGP neighbor 99.99.99.2.
BGP
vyatta@R4# show protocols bgp 100 neighbor 99.99.99.2
remote‐as 300
route‐map {
import eBGP‐IMPORT
}
vyatta@R4#
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 39
Verifying the Inbound Filter
The following commands can be used to verify the inbound filter configuration.
R1: show ip bgp
Example 1-15 shows R1’s BGP table before the import filter is applied.
Example 1‐15 R1 inbound BGP routes before import filtering
vyatta@R1:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.0.0.0/24 88.88.88.2 0 0 200 i
*> 2.1.0.0/24 88.88.88.2 0 0 200 i
*> 2.2.0.0/24 88.88.88.2 0 0 200 i
*>i3.0.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.1.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.2.0.0/24 99.99.99.2 0 100 0 300 i
*> 12.0.0.0 88.88.88.2 0 0 200 i
*>i13.0.0.0/24 99.99.99.2 0 100 0 300 i
*> 88.88.88.0/30 88.88.88.2 0 0 200 i
*>i99.99.99.0/30 99.99.99.2 0 100 0 300 i
*> 172.16.0.0/24 0.0.0.0 1 32768 i
* i 10.0.0.44 1 100 0 i
*>i172.16.128.0/24 99.99.99.2 0 100 0 300 i
*>i192.168.2.0 99.99.99.2 0 100 0 300 i
Total number of prefixes 13
vyatta@R1:~$
R1: show ip bgp
Example 1-16 shows R1’s BGP table after the import filter is applied.
Example 1‐16 R1 inbound BGP routes after import filtering
vyatta@R1:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.11
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 40
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.1.0.0/24 99.99.99.2 0 100 0 300 i
*>i3.2.0.0/24 99.99.99.2 0 100 0 300 i
*> 12.0.0.0 88.88.88.2 0 0 200 i
*>i13.0.0.0/24 99.99.99.2 0 100 0 300 i
*>i99.99.99.0/30 99.99.99.2 0 100 0 300 i
*> 172.16.0.0/24 0.0.0.0 1 32768 i
* i 10.0.0.44 1 100 0 i
*>i172.16.128.0/24 99.99.99.2 0 100 0 300 i
*>i192.168.2.0 99.99.99.2 0 100 0 300 i
Total number of prefixes 9
vyatta@R1:~$
Note that only 12.0.0.0 from 88.88.88.2 is still in the table.
R4: show ip bgp
Example 1-17 shows R4’s BGP table before the import filter is applied.
Example 1‐17 R4 inbound BGP routes before import filtering
vyatta@R4:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.44
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 3.0.0.0/24 99.99.99.2 0 0 300 i
*> 3.1.0.0/24 99.99.99.2 0 0 300 i
*> 3.2.0.0/24 99.99.99.2 0 0 300 i
*>i12.0.0.0 88.88.88.2 0 100 0 200 i
*> 13.0.0.0/24 99.99.99.2 0 0 300 i
*> 99.99.99.0/30 99.99.99.2 0 0 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
*> 0.0.0.0 1 32768 i
*> 172.16.128.0/24 99.99.99.2 0 0 300 i
*> 192.168.2.0 99.99.99.2 0 0 300 i
Total number of prefixes 9
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 41
vyatta@R4:~$
R4: show ip bgp
The output below shows R4’s BGP table after the import filter is applied.
Example 1‐18 R4 inbound BGP routes after import filtering
vyatta@R4:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.44
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 3.0.0.0/24 99.99.99.2 0 0 300 i
*> 3.1.0.0/24 99.99.99.2 0 0 300 i
*> 3.2.0.0/24 99.99.99.2 0 0 300 i
*>i12.0.0.0 88.88.88.2 0 100 0 200 i
*> 13.0.0.0/24 99.99.99.2 0 0 300 i
*> 99.99.99.0/30 99.99.99.2 0 0 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R4:~$
Outbound Route Filtering
Filtering outbound prefixes is another common BGP configuration requirement. On
the Vyatta system this is accomplished using routing policies that are then applied to
the BGP process as “export” policies.
The example in this section assumes that AS100 does not want to be a transit AS for
AS 200 or AS 300. This means that:
•
eBGP routes from R1’s eBGP peer (AS 200) should not be sent to R4’s eBGP peer.
•
Routes from R4’s eBGP peer (AS 300) should not be sent to R1’s eBGP peer.
If we did not implement this filtering, AS 300 might send traffic destined for AS 200
to router R4, and this traffic would then be carried across the AS 100 network.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 42
There are several ways that this routing policy could be implemented: two most
common are basing the filter on the network prefix or basing it on the AS Path. In
this example, we update the existing BGP export policy to add some additional
restrictions that will prevent AS 100 from acting as a transit network for AS 200 and
AS 300.
This export policy is shown in Figure 1-10.
NOTE We assume that the routers in AS100 have been configured for iBGP and eBGP as shown and that the routers in AS200 and AS300 are configured appropriately as eBGP peers.
Figure 1‐10 Filtering outbound routes
To create this export policy, perform the following steps in configuration mode:
Example 1‐19 Creating an export policy
Router
BGP
Step
Command(s)
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 43
Example 1‐19 Creating an export policy
R1
Create a list of AS paths to deny. In this case we just have one ‐ AS300.
vyatta@R1# set policy as‐path‐list AS300 rule 1 action permit
vyatta@R1# set policy as‐path‐list AS300 rule 1 regex 300
R1
Create a route map rule to deny all AS paths in our list.
vyatta@R1# set policy route‐map eBGP‐EXPORT rule 10 action deny
vyatta@R1# set policy route‐map eBGP‐EXPORT rule 10 match as‐path AS300
R1
Create a route map rule to permit all other prefixes.
vyatta@R1# set policy route‐map eBGP‐EXPORT rule 20 action permit
R1
Assign the route map policy created as the export route map policy for AS 200.
vyatta@R1# set protocols bgp 100 neighbor 88.88.88.2 route‐map export eBGP‐EXPORT
R1
Commit the configuration.
vyatta@R1# commit
R1
Reset the BGP session to the peer so that the new policies are enabled.
vyatta@R1# run reset ip bgp 88.88.88.2
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 44
Example 1‐19 Creating an export policy
R1
Display the policy configurations.
vyatta@R1# show policy as‐path‐list AS300
rule 1 {
action permit
regex 300
}
vyatta@R1# show policy route‐map eBGP‐EXPORT
rule 10 {
action deny
match {
as‐path AS300
}
}
rule 20 {
action permit
}
vyatta@R1#
R1
Display the BGP configuration for eBGP neighbor 88.88.88.2.
vyatta@R1# show protocols bgp 100 neighbor 88.88.88.2
remote‐as 200
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
vyatta@R1#
R4
Create a list of AS paths to deny. In this case we just have one ‐ AS200.
vyatta@R4# set policy as‐path‐list AS200 rule 1 action permit
vyatta@R4# set policy as‐path‐list AS200 rule 1 regex 200
R4
Create a route map rule to deny all AS paths in our list.
vyatta@R4# set policy route‐map eBGP‐EXPORT rule 10 action deny
vyatta@R4# set policy route‐map eBGP‐EXPORT rule 10 match as‐path AS200
R4
Create a route map rule to permit all other prefixes.
vyatta@R4# set policy route‐map eBGP‐EXPORT rule 20 action permit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 45
Example 1‐19 Creating an export policy
R4
Assign the route map policy created as the export route map policy for AS 300.
vyatta@R4# set protocols bgp 100 neighbor 99.99.99.2 route‐map export eBGP‐EXPORT
R4
Commit the configuration.
vyatta@R4# commit
R4
Reset the BGP session to the peer so that the new policies are enabled.
vyatta@R4# run reset ip bgp 99.99.99.2
R4
Display the policy configurations.
vyatta@R4# show policy as‐path‐list AS200
rule 1 {
action permit
regex 200
}
vyatta@R4# show policy route‐map eBGP‐EXPORT
rule 10 {
action deny
match {
as‐path AS200
}
}
rule 20 {
action permit
}
vyatta@R4#
R4
Display the BGP configuration for eBGP neighbor 99.99.99.2.
vyatta@R4# show protocols bgp 100 neighbor 99.99.99.2
remote‐as 300
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
vyatta@R4#
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 46
Verifying the Outbound Filter
The following commands can be used to verify the outbound filter configuration.
AS 200: show ip bgp
Example 1-20 shows AS 200’s BGP table before the export filter is applied.
Example 1‐20 AS 200 outbound BGP routes before export filtering
vyatta@AS200:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.11.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2.0.0.0/24 0.0.0.0 0 32768 i
*> 2.1.0.0/24 0.0.0.0 0 32768 i
*> 2.2.0.0/24 0.0.0.0 0 32768 i
*> 3.0.0.0/24 88.88.88.1 0 100 300 i
*> 3.1.0.0/24 88.88.88.1 0 100 300 i
*> 3.2.0.0/24 88.88.88.1 0 100 300 i
*> 12.0.0.0 0.0.0.0 0 32768 i
*> 13.0.0.0/24 88.88.88.1 0 100 300 i
*> 88.88.88.0/30 0.0.0.0 0 32768 i
*> 99.99.99.0/30 88.88.88.1 0 100 300 i
*> 172.16.0.0/24 88.88.88.1 1 0 100 i
Total number of prefixes 11
vyatta@AS200:~$
AS 200: show ip bgp
Example 1-21 shows AS 200’s BGP table after the export filter is applied.
Example 1‐21 AS 200 outbound BGP routes after export filtering
vyatta@AS200:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.11.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 47
Network Next Hop Metric LocPrf Weight Path
*> 2.0.0.0/24 0.0.0.0 0 32768 i
*> 2.1.0.0/24 0.0.0.0 0 32768 i
*> 2.2.0.0/24 0.0.0.0 0 32768 i
*> 12.0.0.0 0.0.0.0 0 32768 i
*> 88.88.88.0/30 0.0.0.0 0 32768 i
*> 172.16.0.0/24 88.88.88.1 1 0 100 i
Total number of prefixes 6
vyatta@AS200:~$
Confederations
Confederations allow large Autonomous Systems to sub-divide the AS into sub-ASs.
This helps solve the scalability issues associated with having to maintain a full mesh
of iBGP connections between all iBGP routers in the AS. In the confederation
example shown in Figure 1-11, routers R1 and R3 are configured in one sub-AS (AS
number 65031) and routers R2 and R4 are configured in a different sub-AS (AS
number 65021).
NOTE We assume that the routers in AS200 and AS300 are configured appropriately as eBGP peers.
Figure 1‐11 BGP confederation
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 48
This example assumes that the configurations in previous sections have been
performed.
To create the confederation shown in Figure 1-11, perform the following steps in
configuration mode
Example 1‐22 Creating a BGP confederation
Router
Step
Command(s)
R1
Delete current BGP configuration.
vyatta@R1# delete protocols bgp 100 R1
To allow routes vyatta@R1# set protocols bgp 65031 neighbor 10.0.0.33 nexthop‐self
from AS200 to be injected into RIB on R3.
R1
vyatta@R1# set protocols bgp 65031 neighbor 10.0.0.33 remote‐as Set R3 in the same sub‐AS as 65031
R1.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 49
Example 1‐22 Creating a BGP confederation
R1
Define the IP address on the local R1 router that is used to peer with the R3 router.
vyatta@R1# set protocols bgp 65031 neighbor 10.0.0.33 update‐source 10.0.0.11
R1
Set the AS200 router in a different AS than R1.
vyatta@R1# set protocols bgp 65031 neighbor 88.88.88.2 remote‐as 200
R1
Set the outbound filter.
vyatta@R1# set protocols bgp 65031 neighbor 88.88.88.2 route‐map export eBGP‐EXPORT
R1
Set the inbound filter.
vyatta@R1# set protocols bgp 65031 neighbor 88.88.88.2 route‐map import eBGP‐IMPORT
R1
Set the network to advertise.
vyatta@R1# set protocols bgp 65031 network 172.16.0.0/24
R1
Set the AS identifier for the confederation.
vyatta@R1# set protocols bgp 65031 parameters confederation identifier 100
R1
Set the peer for vyatta@R1# set protocols bgp 65031 parameters confederation peers 65021
the sub‐AS.
R1
Set the router ID.
vyatta@R1# set protocols bgp 65031 parameters router‐id 10.0.0.11
R1
Commit the configuration.
vyatta@R1# commit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 50
Example 1‐22 Creating a BGP confederation
R1
Display the BGP configuration.
vyatta@R1# show protocols bgp 65031 {
neighbor 10.0.0.33 {
nexthop‐self
remote‐as 65031
update‐source 10.0.0.11
}
neighbor 88.88.88.2 {
remote‐as 200
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
}
network 172.16.0.0/24 {
}
parameters {
confederation {
identifier 100
peers 65021
}
router‐id 10.0.0.11
}
}
vyatta@R1#
R2
Delete current BGP configuration.
vyatta@R2# delete protocols bgp 100 R2
Set R3 in a different sub‐AS than R2.
vyatta@R2# set protocols bgp 65021 neighbor 10.0.0.33 remote‐as 65031
R2
Define the IP address on the local R2 router that is used to peer with the R3 router.
vyatta@R2# set protocols bgp 65021 neighbor 10.0.0.33 update‐source 10.0.0.22
R2
vyatta@R2# set protocols bgp 65021 neighbor 10.0.0.44 remote‐as Set R4 in the 65021
same sub‐AS as R2.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 51
Example 1‐22 Creating a BGP confederation
R2
Define the IP address on the local R2 router that is used to peer with the R4 router.
vyatta@R2# set protocols bgp 65021 neighbor 10.0.0.44 update‐source 10.0.0.22
R2
Set the network to advertise.
vyatta@R2# set protocols bgp 65021 network 172.16.0.0/24
R2
Set the AS identifier for the confederation.
vyatta@R2# set protocols bgp 65021 parameters confederation identifier 100
R2
Set the peer for vyatta@R2# set protocols bgp 65021 parameters confederation peers 65031
the sub‐AS.
R2
Set the router ID.
vyatta@R2# set protocols bgp 65021 parameters router‐id 10.0.0.22
R2
Commit the configuration.
vyatta@R2# commit
R2
Display the BGP configuration.
vyatta@R2# show protocols bgp 65021 {
neighbor 10.0.0.33 {
remote‐as 65031
update‐source 10.0.0.22
}
neighbor 10.0.0.44 {
remote‐as 65021
update‐source 10.0.0.22
}
network 172.16.0.0/24 {
}
parameters {
confederation {
identifier 100
peers 65031
}
router‐id 10.0.0.22
}
}
vyatta@R2#
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 52
Example 1‐22 Creating a BGP confederation
R3
Delete current BGP configuration.
R3
vyatta@R3# set protocols bgp 65031 neighbor 10.0.0.11 remote‐as Set R1 in the same sub‐AS as 65031
R3.
R3
Define the IP address on the local R3 router that is used to peer with the R1 router.
vyatta@R3# set protocols bgp 65031 neighbor 10.0.0.11 update‐source 10.0.0.33
R3
Set the R2 router in a different AS than R3.
vyatta@R3# set protocols bgp 65031 neighbor 10.0.0.22 remote‐as 65021
R3
Define the IP address on the local R3 router that is used to peer with the R2 router.
vyatta@R3# set protocols bgp 65031 neighbor 10.0.0.22 update‐source 10.0.0.33
R3
Set the network to advertise.
vyatta@R3# set protocols bgp 65031 network 172.16.0.0/24
R3
Set the AS identifier for the confederation.
vyatta@R3# set protocols bgp 65031 parameters confederation identifier 100
R3
Set the peer for vyatta@R3# set protocols bgp 65031 parameters confederation peers 65021
the sub‐AS.
R3
Set the router ID.
vyatta@R3# set protocols bgp 65031 parameters router‐id 10.0.0.33
R3
Commit the configuration.
vyatta@R3# commit
BGP
vyatta@R3# delete protocols bgp 100 R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 53
Example 1‐22 Creating a BGP confederation
R3
Display the BGP configuration.
vyatta@R3# show protocols bgp 65031 {
neighbor 10.0.0.11 {
remote‐as 65031
update‐source 10.0.0.33
}
neighbor 10.0.0.22 {
remote‐as 65021
update‐source 10.0.0.33
}
network 172.16.0.0/24 {
}
parameters {
confederation {
identifier 100
peers 65021
}
router‐id 10.0.0.33
}
}
vyatta@R3#
R4
Delete current BGP configuration.
vyatta@R4# delete protocols bgp 100 R4
To allow routes vyatta@R4# set protocols bgp 65021 neighbor 10.0.0.22 nexthop‐self
from AS300 to be injected into RIB on R2.
R4
vyatta@R4# set protocols bgp 65021 neighbor 10.0.0.22 remote‐as Set R2 in the same sub‐AS as 65021
R4.
R4
Define the IP address on the local R4 router that is used to peer with the R2 router.
vyatta@R4# set protocols bgp 65021 neighbor 10.0.0.22 update‐source 10.0.0.44
R4
Set the AS300 router in a different AS than R4.
vyatta@R4# set protocols bgp 65021 neighbor 99.99.99.2 remote‐as 300
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 54
Example 1‐22 Creating a BGP confederation
R4
Set the outbound filter.
vyatta@R4# set protocols bgp 65021 neighbor 99.99.99.2 route‐map export eBGP‐EXPORT
R4
Set the inbound filter.
vyatta@R4# set protocols bgp 65021 neighbor 99.99.99.2 route‐map import eBGP‐IMPORT
R4
Set the network to advertise.
vyatta@R4# set protocols bgp 65021 network 172.16.0.0/24
R4
Set the AS identifier for the confederation.
vyatta@R4# set protocols bgp 65021 parameters confederation identifier 100
R4
Set the peer for vyatta@R4# set protocols bgp 65021 parameters confederation peers 65031
the sub‐AS.
R4
Set the router ID.
vyatta@R4# set protocols bgp 65021 parameters router‐id 10.0.0.44
R4
Commit the configuration.
vyatta@R4# commit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 55
Example 1‐22 Creating a BGP confederation
R4
Display the BGP configuration.
vyatta@R4# show protocols bgp 65021 {
neighbor 10.0.0.22 {
nexthop‐self
remote‐as 65021
update‐source 10.0.0.44
}
neighbor 99.99.99.2 {
remote‐as 300
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
}
network 172.16.0.0/24 {
}
parameters {
confederation {
identifier 100
peers 65031
}
router‐id 10.0.0.44
}
}
vyatta@R4#
Verifying the Confederation
The following commands can be used to verify the confederation configuration.
R1: show ip bgp summary
Example 1-23 shows the output of the show ip bgp summary command for router
R1 at this stage of the configuration.
Example 1‐23 Verifying confederations on R1: “show ip bgp summary”
vyatta@R1:~$ show ip bgp summary
BGP router identifier 10.0.0.11, local AS number 65031
RIB entries 13, using 832 bytes of memory
Peers 2, using 5040 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 56
10.0.0.33 4 65031 1159 1167 0 0 0 00:00:23 6
88.88.88.2 4 200 1150 1159 0 0 0 00:00:06 1
Total number of neighbors 2
vyatta@R1:~$
R1: show ip bgp Example 1-24 shows the output of the show ip bgp command for router R1 at this
stage of the configuration.
Example 1‐24 Verifying confederations on R1: “show ip bgp”
vyatta@R1:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*>i3.1.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*>i3.2.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*> 12.0.0.0 88.88.88.2 0 0 200 i
*>i13.0.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*>i99.99.99.0/30 10.0.0.44 0 100 0 (65021) 300 i
* i172.16.0.0/24 10.0.0.33 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R1:~$
Note that the routes learned from router R4 (Next Hop 10.0.0.44) include the
confederation sub-AS in the AS Path. All confederation sub-ASs will be shown inside
brackets (). This information is not transmitted outside of the true AS (AS 100).
R4
R2
R3
R1
Add sub-AS to AS path
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 57
R2: show ip bgp summary
Example 1-25 shows the output of the show ip bgp summary command for router
R2 at this stage of the configuration.
Example 1‐25 Verifying confederations on R2: “show ip bgp summary”
vyatta@R2:~$ show ip bgp summary
BGP router identifier 10.0.0.22, local AS number 65021
RIB entries 13, using 832 bytes of memory
Peers 2, using 5040 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.33 4 65031 1165 1163 0 0 0 00:23:14 2
10.0.0.44 4 65021 1159 1167 0 0 0 00:23:32 6
Total number of neighbors 2
vyatta@R2:~$
R2: show ip bgp
Example 1-26 shows the output of the show ip bgp command for router R2 at this
stage of the configuration.
Example 1‐26 Verifying confederations on R2: “show ip bgp”
vyatta@R2:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.22
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.1.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.2.0.0/24 10.0.0.44 0 100 0 300 i
*> 12.0.0.0 10.0.0.11 0 100 0 (65031) 200 i
*>i13.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i99.99.99.0/30 10.0.0.44 0 100 0 300 i
* 172.16.0.0/24 10.0.0.33 1 100 0 (65031) i
* i 10.0.0.44 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 58
vyatta@R2:~$
R3: show ip bgp summary
Example 1-27 shows the output of the show bgp peers command for router R3 at
this stage of the configuration.
Example 1‐27 Verifying confederations on R3: “show bgp peers”
vyatta@R3:~$ show ip bgp summary
BGP router identifier 10.0.0.33, local AS number 65031
RIB entries 13, using 832 bytes of memory
Peers 2, using 5040 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.11 4 65031 1172 1180 0 0 0 00:20:04 2
10.0.0.22 4 65021 1161 1177 0 0 0 00:27:51 6
Total number of neighbors 2
vyatta@R3:~$
R3: show ip bgp
Example 1-28 shows the output of the show ip bgp command for router R3 at this
stage of the configuration.
Example 1‐28 Verifying confederations on R3: “show ip bgp”
vyatta@R3:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.33
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 3.0.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*> 3.1.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*> 3.2.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*>i12.0.0.0 10.0.0.11 0 100 0 200 i
*> 13.0.0.0/24 10.0.0.44 0 100 0 (65021) 300 i
*> 99.99.99.0/30 10.0.0.44 0 100 0 (65021) 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 59
* 10.0.0.22 1 100 0 (65021) i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R3:~$
R4: show ip bgp summary
Example 1-29 shows the output of the show ip bgp summary command for router
R4 at this stage of the configuration.
Example 1‐29 Verifying confederations on R4: “show ip bgp summary”
vyatta@R4:~$ show ip bgp summary
BGP router identifier 10.0.0.44, local AS number 65021
RIB entries 13, using 832 bytes of memory
Peers 2, using 5040 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.22 4 65021 1165 1168 0 0 0 00:32:56 2
99.99.99.2 4 300 1155 1162 0 0 0 00:33:30 5
Total number of neighbors 2
vyatta@R4:~$
R4: show ip bgp Example 1-30 shows the output of the show ip bgp command for router R4 at this
stage of the configuration.
Example 1‐30 Verifying confederations on R4: “show ip bgp”
vyatta@R4:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.44
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 3.0.0.0/24 99.99.99.2 0 0 300 i
*> 3.1.0.0/24 99.99.99.2 0 0 300 i
*> 3.2.0.0/24 99.99.99.2 0 0 300 i
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 60
*>i12.0.0.0 10.0.0.11 0 100 0 (65031) 200 i
*> 13.0.0.0/24 99.99.99.2 0 0 300 i
*> 99.99.99.0/30 99.99.99.2 0 0 300 i
* i172.16.0.0/24 10.0.0.22 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R4:~$
Route Reflectors
Router reflectors are another technology designed to help BGP scale to large
Autonomous Systems. In a route reflector configuration there is at least one route
reflector server and one or more route reflector clients. In the example shown in
Figure 1-12, router R1 is the route reflector server and router R2, R3, and R4 are the
route reflector clients.
NOTE We assume that the routers in AS200 and AS300 are configured appropriately as eBGP peers.
Figure 1‐12 BGP route reflector
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 61
This example assumes that the configurations in previous sections have been
performed, and that interfaces and OSPF have been configured. If you are starting
from a clean base system you need not delete previous configuration.
Example 1‐31 Creating route reflectors
Router
Step
R1
Delete current BGP vyatta@R1# delete protocols bgp configuration.
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 nexthop‐self
To allow routes from AS200 to be injected into RIB on R2.
R1
Set R2 in the same AS as R1.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 remote‐as 100
R1
Set R2 as a route reflector client.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 route‐reflector‐client
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.22 Define the IP address on the local update‐source 10.0.0.11
R1 router that is used to peer with the R2 router.
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 nexthop‐self
To allow routes from AS200 to be injected into RIB on R3.
R1
Set R3 in the same AS as R1.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 remote‐as 100
R1
Set R3 as a route reflector client.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 route‐reflector‐client
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.33 Define the IP address on the local update‐source 10.0.0.11
R1 router that is used to peer with the R3 router.
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 nexthop‐self
To allow routes from AS200 to be injected into RIB on R4.
BGP
Command(s)
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 62
Example 1‐31 Creating route reflectors
R1
Set R4 in the same AS as R1.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 remote‐as 100
R1
Set R4 as a route reflector client.
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 route‐reflector‐client
R1
vyatta@R1# set protocols bgp 100 neighbor 10.0.0.44 Define the IP address on the local update‐source 10.0.0.11
R1 router that is used to peer with the R4 router.
R1
vyatta@R1# set protocols bgp 100 neighbor 88.88.88.2 remote‐as Set the AS200 router in a different 200
AS than R1.
R1
Set the outbound filter.
vyatta@R1# set protocols bgp 100 neighbor 88.88.88.2 route‐map export eBGP‐EXPORT
R1
Set the inbound filter.
vyatta@R1# set protocols bgp 100 neighbor 88.88.88.2 route‐map import eBGP‐IMPORT
R1
Set the network to advertise.
vyatta@R1# set protocols bgp 100 network 172.16.0.0/24
R1
Set the router ID.
vyatta@R1# set protocols bgp 100 parameters router‐id 10.0.0.11
R1
Commit the configuration.
vyatta@R1# commit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 63
Example 1‐31 Creating route reflectors
R1
Display the BGP configuration.
R2
Delete current BGP vyatta@R2# delete protocols bgp configuration.
R2
Set R1 in the same AS as R2.
BGP
vyatta@R1# show protocols bgp 100 {
neighbor 10.0.0.22 {
nexthop‐self
remote‐as 100
route‐reflector‐client
update‐source 10.0.0.11
}
neighbor 10.0.0.33 {
nexthop‐self
remote‐as 100
route‐reflector‐client
update‐source 10.0.0.11
}
neighbor 10.0.0.44 {
nexthop‐self
remote‐as 100
route‐reflector‐client
update‐source 10.0.0.11
}
neighbor 88.88.88.2 {
remote‐as 200
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
}
network 172.16.0.0/24 {
}
parameters {
router‐id 10.0.0.11
}
}
vyatta@R1#
vyatta@R2# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 64
Example 1‐31 Creating route reflectors
R2
vyatta@R2# set protocols bgp 100 neighbor 10.0.0.11 Define the IP address on the local update‐source 10.0.0.22
R2 router that is used to peer with the R1 router.
R2
Set the network to advertise.
vyatta@R2# set protocols bgp 100 network 172.16.0.0/24
R2
Set the router ID.
vyatta@R2# set protocols bgp 100 parameters router‐id 10.0.0.22
R2
Commit the configuration.
vyatta@R2# commit
R2
Display the BGP configuration.
vyatta@R2# show protocols bgp 100 {
neighbor 10.0.0.11 {
remote‐as 100
update‐source 10.0.0.22
}
network 172.16.0.0/24 {
}
parameters {
router‐id 10.0.0.22
}
}
vyatta@R2#
R3
Delete current BGP vyatta@R3# delete protocols bgp configuration.
R3
Set R1 in the same AS as R3.
R3
vyatta@R3# set protocols bgp 100 neighbor 10.0.0.11 Define the IP address on the local update‐source 10.0.0.33
R3 router that is used to peer with the R1 router.
R3
Set the network to advertise.
vyatta@R3# set protocols bgp 100 network 172.16.0.0/24
R3
Set the router ID.
vyatta@R3# set protocols bgp 100 parameters router‐id 10.0.0.33
R3
Commit the configuration.
vyatta@R3# commit
BGP
vyatta@R3# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 65
Example 1‐31 Creating route reflectors
R3
Display the BGP configuration.
R4
Delete current BGP vyatta@R4# delete protocols bgp configuration.
R4
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.11 nexthop‐self
To allow routes from AS300 to be injected into RIB on R1.
R4
Set R1 in the same AS as R4.
R4
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.11 Define the IP update‐source 10.0.0.44
address on the local R4 router that is used to peer with the R1 router.
R4
vyatta@R4# set protocols bgp 100 neighbor 99.99.99.2 remote‐as Set the AS300 router in a different 300
AS than R4.
R4
Set the outbound filter.
vyatta@R4# set protocols bgp 100 neighbor 99.99.99.2 route‐map export eBGP‐EXPORT
R4
Set the inbound filter.
vyatta@R4# set protocols bgp 100 neighbor 99.99.99.2 route‐map import eBGP‐IMPORT
R4
Set the network to advertise.
vyatta@R4# set protocols bgp 100 network 172.16.0.0/24
R4
Set the router ID.
vyatta@R4# set protocols bgp 100 parameters router‐id 10.0.0.44
R4
Commit the configuration.
vyatta@R4# commit
BGP
vyatta@R3# show protocols bgp 100 {
neighbor 10.0.0.11 {
remote‐as 100
update‐source 10.0.0.33
}
network 172.16.0.0/24 {
}
parameters {
router‐id 10.0.0.33
}
}
vyatta@R3#
vyatta@R4# set protocols bgp 100 neighbor 10.0.0.11 remote‐as 100
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 66
Example 1‐31 Creating route reflectors
R4
Display the BGP configuration.
vyatta@R4# show protocols bgp 100 {
neighbor 10.0.0.11 {
nexthop‐self
remote‐as 100
update‐source 10.0.0.44
}
neighbor 99.99.99.2 {
remote‐as 300
route‐map {
export eBGP‐EXPORT
import eBGP‐IMPORT
}
}
network 172.16.0.0/24 {
}
parameters {
router‐id 10.0.0.44
}
}
vyatta@R4#
Verifying the Route Reflector
The following commands can be used to verify the route reflector configuration.
R1: show ip bgp summary
Example 1-32 shows the output of the show ip bgp summary command for router
R1 at this stage of the configuration.
Example 1‐32 Verifying route reflector on R1: “show ip bgp summary”
vyatta@R1:~$ show ip bgp summary
BGP router identifier 10.0.0.11, local AS number 100
RIB entries 13, using 832 bytes of memory
Peers 4, using 10080 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.22 4 100 46 66 0 0 0 00:26:12 1
10.0.0.33 4 100 48 66 0 0 0 00:25:50 1
10.0.0.44 4 100 40 54 0 0 0 00:25:05 6
88.88.88.2 4 200 33 36 0 0 0 00:27:14 1
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 67
Total number of neighbors 4
vyatta@R1:~$
R1: show ip bgp Example 1-33 shows the output of the show ip bgp command for router R1 at this
stage of the configuration.
Example 1‐33 Verifying route reflector on R1: “show ip bgp”
vyatta@R1:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.11
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.1.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.2.0.0/24 10.0.0.44 0 100 0 300 i
*> 12.0.0.0 88.88.88.2 0 0 200 i
*>i13.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i99.99.99.0/30 10.0.0.44 0 100 0 300 i
* i172.16.0.0/24 10.0.0.44 1 100 0 i
* i 10.0.0.33 1 100 0 i
* i 10.0.0.22 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R1:~$
R2: show ip bgp summary
Example 1-34 shows the output of the show ip bgp summary command for router
R2 at this stage of the configuration.
Example 1‐34 Verifying route reflector on R2: “show ip bgp summary”
vyatta@R2:~$ show ip bgp summary
BGP router identifier 10.0.0.22, local AS number 100
RIB entries 13, using 832 bytes of memory
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 68
Peers 1, using 2520 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.11 4 100 61 55 0 0 0 00:29:21 7
Total number of neighbors 1
vyatta@R2:~$
R2: show ip bgp
Example 1-35 shows the output of the show ip bgp command for router R2 at this
stage of the configuration.
Example 1‐35 Verifying route reflector on R2: “show ip bgp”
vyatta@R2:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.22
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.1.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.2.0.0/24 10.0.0.44 0 100 0 300 i
*>i12.0.0.0 10.0.0.11 0 100 0 200 i
*>i13.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i99.99.99.0/30 10.0.0.44 0 100 0 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R2:~$
R3: show ip bgp summary
Example 1-36 shows the output of the show ip bgp summary command for router
R3 at this stage of the configuration.
Example 1‐36 Verifying route reflector on R3: “show ip bgp summary”
vyatta@R3:~$ show ip bgp summary
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 69
BGP router identifier 10.0.0.33, local AS number 100
RIB entries 13, using 832 bytes of memory
Peers 1, using 2520 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.11 4 100 60 54 0 0 0 00:32:15 7
Total number of neighbors 1
vyatta@R3:~$
R3: show ip bgp
Example 1-37 shows the output of the show ip bgp command for router R3 at this
stage of the configuration.
Example 1‐37 Verifying route reflector on R3: “show ip bgp”
vyatta@R3:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.33
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*>i3.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.1.0.0/24 10.0.0.44 0 100 0 300 i
*>i3.2.0.0/24 10.0.0.44 0 100 0 300 i
*>i12.0.0.0 10.0.0.11 0 100 0 200 i
*>i13.0.0.0/24 10.0.0.44 0 100 0 300 i
*>i99.99.99.0/30 10.0.0.44 0 100 0 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R3:~$
R4: show ip bgp summary
Example 1-38 shows the output of the show ip bgp summary command for router
R4 at this stage of the configuration.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring BGP 70
Example 1‐38 Verifying route reflector on R4: “show ip bgp summary”
vyatta@R4:~$ show ip bgp summary
BGP router identifier 10.0.0.44, local AS number 100
RIB entries 13, using 832 bytes of memory
Peers 2, using 5040 bytes of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
10.0.0.11 4 100 51 54 0 0 0 00:34:25 2
99.99.99.2 4 300 44 48 0 0 0 00:34:19 5
Total number of neighbors 2
vyatta@R4:~$
R4: show ip bgp Example 1-39 shows the output of the show ip bgp command for router R4 at this
stage of the configuration.
Example 1‐39 Verifying route reflector on R4: “show ip bgp”
vyatta@R4:~$ show ip bgp
BGP table version is 0, local router ID is 10.0.0.44
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 3.0.0.0/24 99.99.99.2 0 0 300 i
*> 3.1.0.0/24 99.99.99.2 0 0 300 i
*> 3.2.0.0/24 99.99.99.2 0 0 300 i
*>i12.0.0.0 10.0.0.11 0 100 0 200 i
*> 13.0.0.0/24 99.99.99.2 0 0 300 i
*> 99.99.99.0/30 99.99.99.2 0 0 300 i
* i172.16.0.0/24 10.0.0.11 1 100 0 i
*> 0.0.0.0 1 32768 i
Total number of prefixes 7
vyatta@R4:~$
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 71
Route Redirection
Route redirection in BGP is performed by means of routing policies. For more
information about routing policies, please see the Vyatta Routing Policies Reference
Guide.
Configuring IPv6 Routing with BGP
This section presents the following topics:
•
Enable Forwarding on R1 and R2
•
Configure IPv6 BGP Peer
•
Advertise Connected Networks
•
Confirm Advertised Routes
This section presents sample configurations for dynamic IPv6 routing with BGP. The
configuration examples are based on the reference diagram in Figure 1-13. In this
example we will show configuration of the nodes using dynamic IPv6 routing with
BGP to enable R3 and R4 to communicate via R1 and R2.
Figure 1‐13 Dynamic IPv6 routing example ‐ BGP
R4
R3
eth0
2001:db8:1::4
eth1
2001:db8:3::3
2001:db8:1::/64
2001:db8:3::/64
2001:db8:1::1
eth0
AS=1
2001:db8:3::2
eth1
R1
R2
eth2
2001:db8:2::1
AS=2
eth0
2001:db8:2::2
2001:db8:2::/64
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 72
Enable Forwarding on R1 and R2
For R1 to be able to pass data between interfaces eth0 and eth2, and for R2 to be
able to pass data between interfaces eth0 and eth1, they must be configured to enable
forwarding. To enable forwarding on R1, perform the following steps in
configuration mode..
Example 1‐40 Enable forwarding on R1
Step
Command
Enable forwarding on R1.
vyatta@R1# delete system ipv6 disable‐forwarding
Commit the change.
vyatta@R1# commit
To enable forwarding on R2, perform the following steps in configuration mode..
Example 1‐41 Enable forwarding on R2
Step
Command
Enable forwarding on R2.
vyatta@R2# delete system ipv6 disable‐forwarding
Commit the change.
vyatta@R2# commit
Configure IPv6 BGP Peer R1 and R2 must be configured to determine how to access remote Autonomous
Systems (AS). To configure R1 to see AS=2, perform the following steps in
configuration mode..
Example 1‐42 Configure R1 to see AS=2
Step
Command
Configure a BGP peer on R1.
vyatta@R1# set protocols bgp 1 neighbor 2001:db8:2::2 remote‐as 2
Commit the change.
vyatta@R1# commit
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 73
Similarly, To configure R2 to see AS=1, perform the following steps in configuration
mode..
Example 1‐43 Configure R2 to see AS=1
Step
Command
Configure a BGP peer on R2.
vyatta@R2# set protocols bgp 2 neighbor 2001:db8:2::1 remote‐as 1
Commit the change.
vyatta@R2# commit
To confirm that the peer session is "Established", perform the following step in
operational mode.
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 74
Example 1‐44 Confirm peer session is established
Step
Command
Display the status of the BGP neighbor.
vyatta@R1:~$ show ip bgp neighbors 2001:db8:2::2
BGP neighbor is 2001:db8:2::2, remote AS 2, local AS 1, external link
BGP version 4, remote router ID 172.16.139.160
BGP state = Established, up for 00:01:24
Last read 00:00:24, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
4 Byte AS: advertised and received
Route refresh: advertised and received(old & new)
Address family IPv6 Unicast: advertised and received
Message statistics:
Inq depth is 0
Outq depth is 0
Sent Rcvd
Opens: 2 0
Notifications: 0 0
Updates: 0 0
Keepalives: 3 2
Route Refresh: 0 0
Capability: 0 0
Total: 5 2
Minimum time between advertisement runs is 30 seconds
For address family: IPv6 Unicast
Community attribute sent to this neighbor(both)
0 accepted prefixes
Connections established 1; dropped 0
Last reset never
Local host: 2001:db8:2::1, Local port: 179
Foreign host: 2001:db8:2::2, Foreign port: 55711
Nexthop: 172.16.117.128
Nexthop global: 2001:db8:2::1
Nexthop local: fe80::20c:29ff:fed6:8180
BGP connection: shared network
Read thread: on Write thread: off
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 75
Advertise Connected Networks
The redistribute command is then used to advertise the connected networks. To
advertise connected networks on R1, perform the following steps in configuration
mode.
Example 1‐45 Advertise connected networks on R1
Step
Command
Advertise connected networks via bgp.
vyatta@R1# set protocols bgp 1 address‐family ipv6‐unicast redistribute connected
Commit the change.
vyatta@R1# commit
Confirm Advertised Routes
To see which routes are being advertised by R1 and which routes have been learned
from peers, perform the following steps in operational mode.
Example 1‐46 Confirm routes advertised and learned by R1
Step
Command
Display routes advertised by R1.
vyatta@R1:~$ show ipv6 bgp neighbors 2001:db8:2::2 advertised‐routes BGP table version is 0, local router ID is 172.16.117.128
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
*> 2001:db8:1::/64 2001:db8:2::1 1 32768 ?
*> 2001:db8:2::/64 2001:db8:2::1 1 32768 ?
Total number of prefixes 2
BGP
R6.4 v01
Vyatta
Chapter 1: BGP Configuration Configuring IPv6 Routing with BGP 76
Example 1‐46 Confirm routes advertised and learned by R1
Display routes learned by R1.
vyatta@R1:~$ show ipv6 bgp neighbors 2001:db8:2::2 routes BGP table version is 0, local router ID is 172.16.117.128
Status codes: s suppressed, d damped, h history, * valid, > best, i ‐ internal,
r RIB‐failure, S Stale, R Removed
Origin codes: i ‐ IGP, e ‐ EGP, ? ‐ incomplete
Network Next Hop Metric LocPrf Weight Path
* 2001:db8:2::/64 2001:db8:2::2 1 0 2 ?
*> 2001:db8:3::/64 2001:db8:2::2 1 0 2 ?
Total number of prefixes 2
Display the routing table.
vyatta@R1:~$ show ipv6 route
Codes: K ‐ kernel route, C ‐ connected, S ‐ static, R ‐ RIPng, O ‐ OSPFv3,
I ‐ ISIS, B ‐ BGP, * ‐ FIB route.
C>* ::1/128 is directly connected, lo
C>* 2001:db8:1::/64 is directly connected, eth0
C>* 2001:db8:2::/64 is directly connected, eth2
B>* 2001:db8:3::/64 [20/1] via fe80::20c:29ff:fe4e:fcb6, eth2, 00:22:47
C * fe80::/64 is directly connected, eth2
C>* fe80::/64 is directly connected, eth0
BGP
R6.4 v01
Vyatta
77
Chapter 2: Global and Router‐Specific Configuration
This chapter describes commands for global and router-specific configuration for
BGP.
This chapter presents the following topics:
•
BGP
Global and Router-Specific Commands
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 78
Global and Router‐Specific Commands
This chapter contains the following commands.
Configuration Commands
Global BGP Configuration
protocols bgp <asn>
Creates a BGP instance on the router and locates it within an Autonomous System (AS).
protocols bgp <asn> aggregate‐address <ipv4net>
Specifies a block of IP addresses to aggregate.
protocols bgp <asn> network <ipv4net>
Specifies a network to be advertised by the BGP routing process.
protocols bgp <asn> timers
Sets BGP timers globally for the local router.
Global BGP Configuration ‐ IPv6
protocols bgp <asn> address‐family ipv6‐unicast
Defines parameters for controlling IPv6 unicast routes.
protocols bgp <asn> address‐family ipv6‐unicast aggregate‐address <ipv6net>
Specifies a block of IPv6 addresses to aggregate.
protocols bgp <asn> address‐family ipv6‐unicast network <ipv6net>
Specifies an IPv6 network to be advertised by the BGP routing process.
Router‐Specific BGP Configuration protocols bgp <asn> parameters always‐compare‐med
Directs the router to compare the MED for paths from neighbors in different autonomous systems.
protocols bgp <asn> parameters bestpath as‐path
Directs the router to compare the AS paths during best path selection.
protocols bgp <asn> parameters bestpath compare‐routerid
Directs the router to compare identical routes received from different external peers during best path selection.
protocols bgp <asn> parameters bestpath med
Directs the router to compare the Multi Exit Discriminator (MED) among paths learned from confederation peers during best path selection.
protocols bgp <asn> parameters dampening
Enables or disables route dampening and sets route dampening values.
protocols bgp <asn> parameters default
Sets default routing behaviors for the system.
protocols bgp <asn> parameters deterministic‐med
Enables or disables enforcing of deterministic MED.
protocols bgp <asn> parameters distance global
Sets administrative distance for all BGP routes.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 79
protocols bgp <asn> parameters distance prefix <ipv4net> distance <dist>
Sets administrative distance for BGP routes for a specific prefix.
protocols bgp <asn> parameters disable‐network‐import‐check
Disables IGP route check for network statements.
protocols bgp <asn> parameters enforce‐first‐as
Enables or disables forcing eBGP peers to list AS number at the beginning of the AS_PATH attribute in incoming updates.
protocols bgp <asn> parameters graceful‐restart
Enables or disables graceful restart of the BGP process.
protocols bgp <asn> parameters log‐neighbor‐changes
Enables or disables logging of the status of BGP neighbors.
protocols bgp <asn> parameters no‐fast‐external‐failover
Enables or disables automatic resetting of BGP sessions for failed links.
protocols bgp <asn> parameters router‐id <id>
Sets a fixed BGP router ID for the router, overriding the automatic ID selection process.
protocols bgp <asn> parameters scan‐time <seconds>
Sets the scanning interval for the router.
Operational Commands
monitor protocol bgp disable
Disables debug message generation related to the acquisition of the BGP router ID and the sending and receiving of BGP messages.
monitor protocol bgp disable all
Disables all BGP debugging.
monitor protocol bgp disable events
Disables debug message generation related to BGP events.
monitor protocol bgp disable filters
Disables debug message generation related to BGP filters.
monitor protocol bgp disable fsm
Disables debug message generation related to the BGP Finite State Machine (FSM).
monitor protocol bgp disable keepalives
Disable debugging information related to sending and receiving BGP keep‐alive messages.
monitor protocol bgp disable rib
Disable debugging information related to the Routing Information Base (RIB).
monitor protocol bgp disable updates
Disable debugging information related to BGP routing updates.
monitor protocol bgp enable
Enables debug message generation related to the acquisition of the BGP router ID and the sending and receiving of BGP messages.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 80
monitor protocol bgp enable events
Enables debug message generation related to BGP events.
monitor protocol bgp enable filters
Enables debug message generation related to BGP filters.
monitor protocol bgp enable fsm
Enables debug message generation related to the BGP Finite State Machine (FSM).
monitor protocol bgp enable keepalives
Display debugging information related to sending and receiving BGP keep‐alive messages.
monitor protocol bgp enable rib
Display debugging information related to the Routing Information Base (RIB).
monitor protocol bgp enable updates
Display debugging information related to BGP routing updates.
reset ip bgp <address>
Resets a BGP connection.
reset ip bgp <address> ipv4 unicast
Resets an IPv4 unicast BGP connection.
reset ip bgp all
Resets all BGP peering sessions.
reset ip bgp dampening
Resets BGP route dampening information and unsuppresses suppressed routes.
show ip bgp
Displays BGP routes.
show ip bgp attribute‐info
Displays BGP attribute information.
show ip bgp cidr‐only
Displays BGP routes with CIDR network masks.
show ip bgp community‐info
Displays BGP community information.
show ip bgp community <community>
Displays BGP routes belonging to the specified BGP community.
show ip bgp community‐list <list‐name>
Displays BGP routes permitted by the specified community list.
show ip bgp dampened‐paths
Displays BGP routes that are currently dampened.
show ip bgp filter‐list <as‐path‐list‐name>
Displays routes matching a list of autonomous system paths.
show ip bgp flap‐statistics
Displays route flap statistics for BGP routes.
show ip bgp flap‐statistics cidr‐only
Displays only route flap statistics for BGP routes with CIDR network masks.
show ip bgp flap‐statistics filter‐list <as‐path‐list‐name>
Displays route flap statistics for BGP routes matching a list of AS paths.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 81
show ip bgp flap‐statistics prefix‐list <list‐name>
Displays route flap statistics for BGP routes matching a prefix list.
show ip bgp flap‐statistics regexp <expr>
Displays route flap statistics for BGP routes matching an AS path regular expression.
show ip bgp flap‐statistics route‐map <map‐name>
Displays route flap statistics for BGP routes matching a route map.
show ip bgp ipv4 unicast
Displays information for IPv4 unicast BGP routes.
show ip bgp ipv4 unicast cidr‐only
Displays IPv4 unicast BGP routes with CIDR network masks.
show ip bgp ipv4 unicast community <community>
Displays IPv4 unicast BGP routes belonging to the specified community.
show ip bgp ipv4 unicast community‐list <list‐name>
Displays IPv4 unicast BGP routes permitted by the specified community list.
show ip bgp ipv4 unicast filter‐list <as‐path‐list‐name>
Displays IPv4 unicast BGP routes permitted by the specified AS path list.
show ip bgp ipv4 unicast paths
Displays BGP IPv4 unicast path information.
show ip bgp ipv4 unicast prefix‐list <list‐name>
Displays IPv4 unicast BGP routes matching a prefix list.
show ip bgp ipv4 unicast regexp <regexp>
Displays IPv4 unicast BGP routes matching an AS path regular expression.
show ip bgp ipv4 unicast route‐map <map‐name>
Displays IPv4 unicast BGP routes matching a route map.
show ip bgp ipv4 unicast statistics
Displays statistics for BGP IPv4 unicast routes.
show ip bgp ipv4 unicast summary
Displays a summary of BGP IPv4 unicast information.
show ip bgp memory
Displays memory usage for BGP.
show ip bgp paths
Displays all BGP paths.
show ip bgp prefix‐list <list‐name>
Displays BGP routes matching a prefix list.
show ip bgp regexp <regexp>
Displays routes matching an AS path regular expression.
show ip bgp route‐map <map‐name>
Displays routes matching a route map.
show ip bgp scan
Displays BGP scan status.
show ip route bgp
Displays BGP routes.
show ipv6 bgp
Displays BGP routes.
show ipv6 bgp community <community>
Displays BGP routes belonging to the specified BGP community.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 82
show ipv6 bgp community‐list <list‐name>
Displays BGP routes permitted by the specified community list.
show ipv6 bgp filter‐list <as‐path‐list‐name>
Displays routes matching a list of autonomous system paths.
show ipv6 bgp prefix‐list <list‐name>
Displays BGP routes matching a prefix list.
show ipv6 bgp regexp <regexp>
Displays routes matching an AS path regular expression.
show monitoring protocols bgp
Displays BGP protocol debugging flags.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 83
monitor protocol bgp disable
Disables debug message generation related to the acquisition of the BGP router ID
and the sending and receiving of BGP messages.
Syntax
monitor protocol bgp disable
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to disable debugging related to the acquisition of the BGP router
ID and the sending and receiving of BGP messages.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 84
monitor protocol bgp disable all Disables all BGP debugging.
Syntax
monitor protocol bgp disable all
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to disable all BGP debug message generation.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 85
monitor protocol bgp disable events Disables debug message generation related to BGP events.
Syntax
monitor protocol bgp disable events
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to disable generation of trace-level messages related to BGP
events.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 86
monitor protocol bgp disable filters Disables debug message generation related to BGP filters.
Syntax
monitor protocol bgp disable filters
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to disable generation of trace-level messages related to BGP filters.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 87
monitor protocol bgp disable fsm Disables debug message generation related to the BGP Finite State Machine (FSM).
Syntax
monitor protocol bgp disable fsm
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to disable generation of trace-level messages related to the BGP
finite state machine (FSM).
A BGP router uses an FSM consisting of six states, as defined by RFC 1771. The FSM
describes how and when the BGP router should make decisions about its operations
with other BGP neighbors.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 88
monitor protocol bgp disable keepalives Disable debugging information related to sending and receiving BGP keep-alive
messages.
Syntax
monitor protocol bgp disable keepalives
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to disable generation of trace-level messages related to sending
and receiving BGP keep-alive messages.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 89
monitor protocol bgp disable rib Disable debugging information related to the Routing Information Base (RIB).
Syntax
monitor protocol bgp disable rib
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to disable generation of trace-level messages related to the
Routing Information Base.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 90
monitor protocol bgp disable updates Disable debugging information related to BGP routing updates.
Syntax
monitor protocol bgp disable updates
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to disable generation of trace-level messages related to BGP
routing updates.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 91
monitor protocol bgp enable
Enables debug message generation related to the acquisition of the BGP router ID
and the sending and receiving of BGP messages.
Syntax
monitor protocol bgp enable
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to enable generation of trace-level messages related to the
acquisition of the BGP router ID and the sending and receiving of BGP messages.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 92
monitor protocol bgp enable events Enables debug message generation related to BGP events.
Syntax
monitor protocol bgp enable events
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to enable generation of trace-level messages related to BGP events.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 93
monitor protocol bgp enable filters Enables debug message generation related to BGP filters.
Syntax
monitor protocol bgp enable filters
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to enable generation of trace-level messages related to BGP filters.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 94
monitor protocol bgp enable fsm Enables debug message generation related to the BGP Finite State Machine (FSM).
Syntax
monitor protocol bgp enable fsm
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to enable generation of trace-level messages related to the BGP
finite state machine (FSM).
A BGP router uses an FSM consisting of six states, as defined by RFC 1771. The FSM
describes how and when the BGP router should make decisions about its operations
with other BGP neighbors.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 95
monitor protocol bgp enable keepalives Display debugging information related to sending and receiving BGP keep-alive
messages.
Syntax
monitor protocol bgp enable keepalives
Command Mode
Operational mode.
Parameters
None.
Default
None
Usage Guidelines
Use this command to enable generation of trace-level messages related to sending and
receiving BGP keep-alive messages.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 96
monitor protocol bgp enable rib Display debugging information related to the Routing Information Base (RIB).
Syntax
monitor protocol bgp enable rib
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to enable generation of trace-level messages related to the Routing
Information Base.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 97
monitor protocol bgp enable updates Display debugging information related to BGP routing updates.
Syntax
monitor protocol bgp enable updates [in | out]
Command Mode
Operational mode.
Parameters
in
Optional. Debug information is generated only for inbound
routing updates.
out
Optional. Debug information is generated only for outbound
routing updates.
Default
Debug messages are generated for both inbound and outbound routing messages.
Usage Guidelines
Use this command to enable generation of trace-level messages related to BGP
routing updates.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 98
protocols bgp <asn>
Creates a BGP instance on the router and locates it within an Autonomous System
(AS).
Syntax
set protocols bgp asn
delete protocols bgp asn
show protocols bgp [asn]
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
Any peers of this router must be configured to know this AS
number—if there is a mismatch, a peering will not be
established.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
None.
Usage Guidelines
Use the set form of this command to enable a BGP instance on the router, and set its
Autonomous System. All subsequent BGP configuration falls under this
configuration node.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 99
Note that you cannot create another BGP instance (that is, you cannot specify a
second or further AS) unless you declare multiple BGP instances using the
multiple-instance command.
Use the delete form of this command to disable BGP on the router, removing all BGP
configuration.
Use the show form of this command to view all BGP configuration.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 100
protocols bgp <asn> address‐family ipv6‐unicast Defines parameters for controlling IPv6 unicast routes.
Syntax
set protocols bgp asn address-family ipv6-unicast
delete protocols bgp asn address-family ipv6-unicast
show protocols bgp asn address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
Usage Guidelines
Use this command to define parameters for IPv6 unicast routes.
Use the set form of this command to specify the configuration node.
Use the delete form of this command to delete the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 101
protocols bgp <asn> address‐family ipv6‐unicast aggregate‐address <ipv6net>
Specifies a block of IPv6 addresses to aggregate.
Syntax
set protocols bgp asn address-family ipv6-unicast aggregate-address ipv6net
[summary-only]
delete protocols bgp asn address-family ipv6-unicast aggregate-address ipv6net
show protocols bgp asn address-family ipv6-unicast aggregate-address [ipv6net]
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
aggregate‐address ipv6net {
summary‐only
}
}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
ip6net
Mandatory. The IPv6 network from which routes are to be
aggregated. The format is ipv6-address/prefix.
summary-only Specifies that aggregated routes are summarized. These routes
will not be announced.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 102
Usage Guidelines
Use this command to specify a block of IPv6 addresses to aggregate. The command
applies to IPv6 unicast routes only.
Use the set form of this command to specify a contiguous block of IPv6 addresses to
aggregate.
Use the delete form of this command to delete an aggregate address.
Use the show form of this command to view aggregate address configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 103
protocols bgp <asn> address‐family ipv6‐unicast network <ipv6net>
Specifies an IPv6 network to be advertised by the BGP routing process.
Syntax
set protocols bgp asn address-family ipv6-unicast network ipv6net [path-limit limit |
route-map map-name]
delete protocols bgp asn address-family ipv6-unicast network ipv6net [path-limit |
route-map]
show protocols bgp asn address-family ipv6-unicast network ipv6net
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
network ipv6net {
path‐limit limit
route‐map map‐name
}
}
}
}
}
Parameters
asn
BGP
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration ipv6net
Global and Router‐Specific Commands 104
Mandatory. Multi-node. An IPv6 network in the format
ipv6-address/prefix.
You can advertise to multiple networks by creating
multiple network configuration nodes.
limit
AS path hop count limit. The range of values is 0 to 255.
map-name
The configured route map to be used when advertising
the network.
Default
None.
Usage Guidelines Use this command to advertise networks to BGP neighbors. The command applies to
IPv6 unicast routes only. Note that path-limit and route-map options are mutually
exclusive.
Use the set form of this command to specify a network to be announced via BGP.
Use the delete form of this command to remove a network from the list of networks
to be announced by BGP.
Use the show form of this command to view BGP network advertising configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 105
protocols bgp <asn> aggregate‐address <ipv4net>
Specifies a block of IP addresses to aggregate.
Syntax
set protocols bgp asn aggregate-address ipv4net [as-set | summary-only]
delete protocols bgp asn aggregate-address ipv4net
show protocols bgp asn aggregate-address [ipv4net]
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
aggregate‐address ipv4net {
as‐set
summary‐only
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
ipv4net
Mandatory. The network from which routes are to be
aggregated. The format is ip-address/prefix.
as-set
Specifies that the routes resulting from aggregation include the
AS set.
summary-only Specifies that aggregated routes are summarized. These routes
will not be announced.
Usage Guidelines
Use the set form of this command to specify a contiguous block of IP addresses to
aggregate.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 106
Use the delete form of this command to delete an aggregate address.
Use the show form of this command to view aggregate address configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 107
protocols bgp <asn> network <ipv4net>
Specifies a network to be advertised by the BGP routing process.
Syntax
set protocols bgp asn network ipv4net [backdoor | route-map map-name]
delete protocols bgp asn network ipv4net [backdoor | route-map]
show protocols bgp asn network
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
network ipv4net {
backdoor
route‐map map‐name
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
ipv4net
Mandatory. Multi-node. An IPv4 network in the format
ip-address/prefix.
You can advertise to multiple networks by creating
multiple network configuration nodes.
BGP
backdoor
Optional. Indicates that this network is reachable by a
backdoor route. A backdoor network is considered to be
like a local network, but is not advertised.
map-name
Optional. Specifies a configured route map to be used
when advertising the network.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 108
Default
None.
Usage Guidelines Use this command to advertise networks to BGP neighbors.
Use the set form of this command to specify a network to be announced via BGP.
Use the delete form of this command to remove a network from the list of networks
to be announced by BGP.
Use the show form of this command to view BGP network advertising configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 109
protocols bgp <asn> parameters always‐compare‐med
Directs the router to compare the MED for paths from neighbors in different
autonomous systems.
Syntax
set protocols bgp asn parameters always-compare-med
delete protocols bgp asn parameters always-compare-med
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
always‐compare‐med
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
The MED is not compared.
Usage Guidelines
Use the set form of this command to have the router compare the Multi Exit
Discriminator (MED) for paths from neighbors in different autonomous systems.
The MED is compared only if the AS path for the compared routes is identical.
Use the delete form of this command to disable MED comparison.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 110
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 111
protocols bgp <asn> parameters bestpath as‐path
Directs the router to compare the AS paths during best path selection.
Syntax
set protocols bgp asn parameters bestpath as-path [confed | ignore]
delete protocols bgp asn parameters bestpath as-path
show protocols bgp asn parameters bestpath
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
bestpath {
as‐path {
confed
ignore
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
confed
Optional. Directs the router to compare the AS paths
within a confederation during best path selection.
ignore
Optional. Directs the router to ignore AS_PATH during
best path selection.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 112
Default
By default, when making the best-path selection the router does not compare
AS_PATHs within a confederation and does not ignore the AS_PATH.
Usage Guidelines
Use the set form of this command to direct the router to compare the AS paths during
best path selection.
Use the delete form of this command to restore the default best-path selection
behavior.
Use the show form of this command to view BGP best path selection configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 113
protocols bgp <asn> parameters bestpath compare‐routerid
Directs the router to compare identical routes received from different external peers
during best path selection.
Syntax
set protocols bgp asn parameters bestpath compare-routerid
delete protocols bgp asn parameters bestpath compare-routerid
show protocols bgp asn parameters bestpath
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
bestpath {
compare‐routerid
}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
Default
By default, when making the best-path selection the router does not compare
identical routes received from different external peers.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 114
Usage Guidelines
Use the set form of this command to direct the router to compare identical routes
received from different external peers during best path selection, and select as the
best path the route with the lowest router ID.
Use the delete form of this command to restore the default best-path selection
behavior.
Use the show form of this command to view BGP best path selection configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 115
protocols bgp <asn> parameters bestpath med
Directs the router to compare the Multi Exit Discriminator (MED) among paths
learned from confederation peers during best path selection.
Syntax
set protocols bgp asn parameters bestpath med [confed | missing-as-worst]
delete protocols bgp asn parameters bestpath med [confed | missing-as-worst]
show protocols bgp asn parameters bestpath
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
bestpath {
med {
confed
missing‐as‐worst
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
confed
Optional. Compare the MED among confederation
paths
missing-as-worst
Optional. Treat a missing MED as the least preferred
one.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 116
Default
By default, when making the best-path selection the router does not consider the
MED.
Usage Guidelines
Use the set form of this command to direct the router to compare the Multi Exit
Discriminator (MED) among paths learned from confederation peers during
best-path selection.
Use the delete form of this command to restore the default best-path selection
behavior.
Use the show form of this command to view BGP best path selection configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 117
protocols bgp <asn> parameters dampening
Enables or disables route dampening and sets route dampening values.
Syntax
set protocols bgp asn parameters dampening [half-life minutes | re-use penalty |
start-suppress-time penalty | max-suppress-time minutes]
delete protocols bgp asn parameters dampening [half-life | re-use |
start-suppress-time | max-suppress-time]
show protocols bgp asn parameters dampening
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
dampening {
half‐life minutes
max‐suppress‐time minutes
re‐use penalty
start‐suppress‐time penalty
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
half-life minutes
Optional. The time period, in minutes, after which the
penalty assigned to a route because of flapping is
reduced by half. The range is 1 to 45. The default is 15.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 118
max-suppress-time
minutes
Optional. The maximum time, in minutes, that a route
may be suppressed. The range is 1 to 20000. The default
is four times the half-life period.
re-use penalty
Optional. The reuse threshold. If the penalty for a
flapping route is reduced below this point, the route is to
be brought back into use. The range is 1 to 20000. The
default is 750.
start-suppress-time
penalty
Optional. The route suppression threshold. If the
accumulated penalty for a flapping route reaches this
limit, the route is suppressed. The range is 1 to 20000.
The default is 2000.
Default
Route dampening is disabled.
Usage Guidelines
Use the set form of this command to configure route dampening. When used with no
options, this command enables route dampening at the default values.
Use the delete form of this command to disable route dampening or reset route
dampening parameters to default values.
Use the show form of this command to view BGP route dampening configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 119
protocols bgp <asn> parameters default
Sets default routing behaviors for the system.
Syntax
set protocols bgp asn parameters default [local-pref pref | no-ipv4-unicast]
delete protocols bgp asn parameters default [local-pref | no-ipv4-unicast]
show protocols bgp asn parameters default
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
default {
local‐pref pref
no‐ipv4‐unicast
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
local-pref pref
Optional. Specifies the degree of preference that iBGP
peers are to give local routes during BGP best path
selection. The higher the value, the more the route is to
be preferred. The range is 0 to 4294967295. The default
is 100.
no-ipv4-unicast
Optional. Disables the IPv4 unicast address family as the
default for peering session establishment. By default,
IPv4 address family prefixes are automatically
exchanged.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 120
Default
The value of the local-pref attribute is 100. IPv4 unicast is the default address family.
Usage Guidelines
Use the set form of this command to override default local route preferences and
automatic address family exchanges.
Use the delete form of this command to reset the route preferences and address family
exchanges to the default.
Use the show form of this command to view BGP default routing configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 121
protocols bgp <asn> parameters deterministic‐med
Enables or disables enforcing of deterministic MED.
Syntax
set protocols bgp asn parameters deterministic-med
delete protocols bgp asn parameters deterministic-med
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
deterministic‐med
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
Deterministic MED is not enforced.
Usage Guidelines
Use the set form of this command to enforce the deterministic comparison of the
Multi Exit Discriminator (MED) value between all paths received from within the
same autonomous system.
Use the delete form of this command to disable required MED comparison.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 122
protocols bgp <asn> parameters distance global Sets administrative distance for all BGP routes.
Syntax
set protocols bgp asn parameters distance global {external dist | internal dist | local
dist}
delete protocols bgp asn parameters distance global {external | internal | local}
show protocols bgp asn parameters distance global {external | internal | local}
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
distance {
global {
external dist
internal dist
local dist
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
external dist
Mandatory. The externally learned (eBGP) route distance. The
range of values is 1 to 255.
internal dist
Mandatory. The internally learned (iBGP) route distance. The
range of values is 1 to 255.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration local dist
Global and Router‐Specific Commands 123
Mandatory. The locally generated route distance. The range of
values is 1 to 255.
Default
None.
Usage Guidelines
This command sets the administrative distance for BGP routes. All three distances
(external, internal, and local) must be defined.
Use the set form of this command to set the administrative distance for BGP routes.
Use the delete form of this command to remove distance configuration settings.
Use the show form of this command to view distance configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 124
protocols bgp <asn> parameters distance prefix <ipv4net> distance <dist>
Sets administrative distance for BGP routes for a specific prefix.
Syntax
set protocols bgp asn parameters distance prefix ipv4net distance dist
delete protocols bgp asn parameters distance prefix ipv4net
show protocols bgp asn parameters distance prefix ipv4net
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
distance {
prefix ipv4net {
distance dist
}
}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
ipv4net
Mandatory. Multi-node. An IPv4 network in the format
ip-address/prefix.
You can specify multiple prefixes by creating multiple prefix
configuration nodes.
distance dist
BGP
The route distance for the specified prefix. The range of values
is 1 to 255.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 125
Default
None.
Usage Guidelines
This command sets the administrative distance for a specific prefix.
Use the set form of this command to set the administrative distance for the specified
prefix.
Use the delete form of this command to remove distance configuration settings.
Use the show form of this command to view distance configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 126
protocols bgp <asn> parameters disable‐network‐import‐check
Disables IGP route check for network statements.
Syntax
set protocols bgp asn parameters disable-network-import-check
delete protocols bgp asn parameters disable-network-import-check
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
disable‐network‐import‐check
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
IGP route check for network statements is enabled.
Usage Guidelines
This command will cause BGP to advertise a network regardless of the Interior
Gateway Protocol (IGP) in use.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 127
Use the set form of this command to disable IGP route checks for network
statements.
Use the delete form of this command to enable IGP route checks for network
statements.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 128
protocols bgp <asn> parameters enforce‐first‐as
Enables or disables forcing eBGP peers to list AS number at the beginning of the
AS_PATH attribute in incoming updates.
Syntax
set protocols bgp asn parameters enforce-first-as
delete protocols bgp asn parameters enforce-first-as
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters { enforce‐first‐as
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
Disabled.
Usage Guidelines
Use the set form of this command to direct the router to enforce listing of an eBGP
peer’s AS number at the beginning of the AS_PATH.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 129
When this feature is enabled, the router will deny an update received from an
external BGP (eBGP) peer unless the AS number is listed at the beginning of the
AS_PATH in the incoming update. This prevents “spoof” situations where a
misconfigured or unauthorized peer misdirecting traffic by advertising a route as if
it were sourced from another autonomous system.
Use the delete form of this command to disable this behavior.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 130
protocols bgp <asn> parameters graceful‐restart
Enables or disables graceful restart of the BGP process.
Syntax
set protocols bgp asn parameters graceful-restart [stalepath-time seconds]
delete protocols bgp asn parameters graceful-restart
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
graceful‐restart {
stalepath‐time seconds
}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
stalepath-time
seconds
Optional. Sets the maximum interval, in seconds, to
retain stale paths for a restarting peer. If this interval is
exceeded, all stale paths are removed.
The range is 1 to 3600. The default is 360.
The default value for this attribute is optimal for most
deployments, and changing this value can have negative
effects on network behavior. We recommend that only
experienced network operators change this values.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 131
Default
By default, paths for restarting peers are retained for at most 360 seconds.
Usage Guidelines
Use the set form of this command to direct the router to restart gracefully when it is
reset.
Use the delete form of this command to disable graceful restart.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 132
protocols bgp <asn> parameters log‐neighbor‐changes
Enables or disables logging of the status of BGP neighbors.
Syntax
set protocols bgp asn parameters log-neighbor-changes
delete protocols bgp asn parameters log-neighbor-changes
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
log‐neighbor‐changes
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
Disabled.
Usage Guidelines
Use the set form of this command to direct the router to log changes in adjacencies
for BGP neighbors.
This feature helps detect network problems, by recording when BGP neighbors come
up or go down, and when they reset. Log messages are sent to the main log file.
Use the delete form of this command to disable logging of neighbor status changes.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 133
Use the show form of this command to view global BGP configuration settings.
Even when this feature is disabled, the system tracks neighbor resets; these resets can
be seen in the output of the show ip bgp neighbors command.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 134
protocols bgp <asn> parameters no‐fast‐external‐failover
Enables or disables automatic resetting of BGP sessions for failed links.
Syntax
set protocols bgp asn parameters no-fast-external-failover
delete protocols bgp asn parameters no-fast-external-failover
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
no‐fast‐external‐failover
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
Disabled. By default, sessions are automatically reset.
Usage Guidelines
Use the set form of this command to disable fast external failover.
When fast external failover is enabled, then BGP sessions for directly adjacent
external peers are immediately reset if the link fails.
Use the delete form of this command to restore fast external failover.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 135
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 136
protocols bgp <asn> parameters router‐id <id>
Sets a fixed BGP router ID for the router, overriding the automatic ID selection
process.
Syntax
set protocols bgp asn parameters router-id id
delete protocols bgp asn parameters router-id id
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
router‐id id
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The ID to be used by the router as the BGP router
ID.
Default
When router ID is not explicitly set, then the router ID is automatically set to the IP
address of the loopback address, if configured. If the loopback address is not
configured, the router ID is set to the first IP address configured on a physical
interface.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 137
Usage Guidelines
Use the set form of this command to configure a fixed router ID for the local BGP
routing process. This ID will override the router ID automatic set by the system.
Use the delete form of this command to remove the fixed router ID and restore the
automatically selected ID.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 138
protocols bgp <asn> parameters scan‐time <seconds>
Sets the scanning interval for the router.
Syntax
set protocols bgp asn parameters scan-time seconds
delete protocols bgp asn parameters scan-time seconds
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
scan‐time seconds
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
seconds
Mandatory. The interval, in seconds, at which the router scans
for BGP routing information. The range is 5 to 60. The default
is 15.
Default
Scans take place every 15 seconds.
Usage Guidelines
Use the set form of this command to set the interval at which the router scans for
BGP routing information.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 139
Use the delete form of this command to reset the scanning interval to the default.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 140
protocols bgp <asn> timers
Sets BGP timers globally for the local router.
Syntax
set protocols bgp asn timers [keepalive seconds | holdtime seconds]
delete protocols bgp asn timers [keepalive | holdtime]
show protocols bgp asn timers [keepalive | holdtime]
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
timers {
keepalive seconds
holdtime seconds
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
keepalive seconds
Optional. The frequency, in seconds, with which the
local router sends keep-alive messages to neighbors. The
range is 1 to 65535. The default is 60.
holdtime seconds
Optional. The maximum interval, in seconds, after
which if the local router has not received a keep-alive
message from the neighbor, a neighbor is declared dead.
The range is 0 and 4 to 65535, where 0 disables the
holdtime timer. The default is 180.
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 141
Default
The default for the keep-alive timer is 60 seconds. The default for the holdtime timer
is 180 seconds.
Usage Guidelines
Use the set form of this command to set global BGP timers for monitoring the health
of remote peers. These timers will be applied to all remote peers unless a neighbor
has timers explicitly configured for it. Timers explicitly specified for a neighbor
override the timers set globally.
Use the delete form of this command to restore global BGP timers to default values.
Use the show form of this command to view global BGP timer configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 142
reset ip bgp <address> Resets a BGP connection.
Syntax
reset ip bgp {ipv4|ipv6} [in [prefix-filter] | out | rsclient | soft [in | out]]
Command Mode
Operational mode.
Parameters
ipv4
Resets the connection for the IPv4 BGP peer at the specified
address.
ipv6
Resets the connection for the IPv6 BGP peer at the specified
address.
in
Optional. Resets the inbound session only.
prefix-filter
Optional. Resets the BGP outbound route filter (ORF). This
keyword is ignored unless ORF capabilities have been enabled
on the local system or received from the sending BGP peer. In
this case, a normal inbound soft reset is performed.
out
Optional. Resets the outbound session only.
rsclient
Optional. Resets only connections in the route server client
Routing Information Base (RIB).
soft
Optional. Uses soft reconfiguration for the reset.
in
Optional. Resets with soft reconfiguration only inbound
sessions.
out
Optional. Resets with soft reconfiguration only outbound
sessions.
Default
Both inbound and outbound sessions are reset.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 143
Usage Guidelines
Use this command to reset a BGP connection to a peer.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 144
reset ip bgp <address> ipv4 unicast
Resets an IPv4 unicast BGP connection.
Syntax
reset ip bgp {ipv4|ipv6} ipv4 unicast {in [prefix-filter] | out | soft [in | out]}
Command Mode
Operational mode.
Parameters
ipv4
Resets the connection for the IPv4 BGP peer at the specified
address.
ipv6
Resets the connection for the IPv6 BGP peer at the specified
address.
in
Optional. Resets inbound sessions only.
prefix-filter
Optional. Resets the BGP outbound route filter (ORF). The
prefix-filter keyword is ignored unless ORF capabilities have
been enabled on the local system or received from the sending
BGP peer. In this case, a normal inbound soft reset is performed.
out
Optional. Resets outbound sessions only.
soft
Optional. Uses soft reconfiguration for the reset.
in
Optional. Resets with soft reconfiguration only inbound
sessions.
out
Optional. Resets with soft reconfiguration only outbound
sessions.
Default
When used without the soft option, reset connections are dropped, both inbound and
outbound.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 145
Usage Guidelines
Use this command to reset an inbound BGP IPv4 unicast session for a given IP
address.This forces BGP updates to be generated and new BGP policies to be applied.
Unless the soft option is used, all connections are dropped (a “hard reset”): TCP
connections are terminated and all routes received from the neighbor are removed
from the BGP routing table. Then the connection with the neighbor is reestablished.
If the soft option is used, routes from the neighbor are marked as stale but are not
immediately removed from the BGP table. Stale routes that are not received from the
neighbor when the connection is reestablished are removed from the BGP table at
that point.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 146
reset ip bgp all
Resets all BGP peering sessions.
Syntax
reset ip bgp all
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to reset all BGP peering sessions.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 147
reset ip bgp dampening
Resets BGP route dampening information and unsuppresses suppressed routes.
Syntax
reset ip bgp dampening [ipv4 [ipv4-mask] | ipv4net]
Command Mode
Operational mode.
Parameters
ipv4
Optional. Resets route dampening information for the IPv4 peer
at the specified address.
ipv4-mask
Optional. An IPv4 network mask.
ipv4net
Optional. Resets route dampening information for all peers on
the specified network. The format is ip-address/prefix.
Default
When used with no option, this command resets route dampening information and
unsuppresses routes for all BGP peers.
Usage Guidelines
Use this command on a router running BGP to reset information related to route
dampening and unsupress routes that are currently suppressed.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 148
show ip bgp Displays BGP routes.
Syntax
show ip bgp [ipv4 | ipv4net [longer-prefixes] | summary]
Command Mode
Operational mode.
Parameters
ipv4
Optional. Displays routes for the neighbor at the specified
IPv4 address.
ipv4net
Optional. Displays routes for the specified IPv4 network.
longer-prefixes
Optional. Displays any routes more specific than the one
specified.
summary
Optional. Shows summary BGP route information.
Default
Displays all BGP routes by default.
Usage Guidelines
Use this command to display the BGP routing table.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 149
show ip bgp attribute‐info
Displays BGP attribute information.
Syntax
show ip bgp attribute-info
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP attribute information.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 150
show ip bgp cidr‐only
Displays BGP routes with CIDR network masks.
Syntax
show ip bgp cidr-only
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display only routes with non-natural network masks; that is,
Classless Inter Domain Routing network masks.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 151
show ip bgp community‐info
Displays BGP community information.
Syntax
show ip bgp community-info
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP community information.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 152
show ip bgp community <community>
Displays BGP routes belonging to the specified BGP community.
Syntax
show ip bgp community community [exact-match]
Command Mode
Operational mode.
Parameters
community
Mandatory. A BGP community identifier in the form AA:NN
(where AA and NN are in the range of 0-65535), one of the
well-known BGP communities local-AS, no-export, or
no-advertise, or a space-separated list of up to four community
identifiers.
exact-match
Optional. Displays only routes that have an exact match.
Default
None.
Usage Guidelines
Use this command to display the BGP routes belonging to up to four BGP
communities.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 153
show ip bgp community‐list <list‐name>
Displays BGP routes permitted by the specified community list.
Syntax
show ip bgp community-list list-name [exact-match]
Command Mode
Operational mode.
Parameters
list-name
Mandatory. A preconfigured list of BGP communities.
exact-match
Optional. Displays only route that have an exact match.
Default
None.
Usage Guidelines
Use this command to display the BGP routes permitted by the specified community
list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 154
show ip bgp dampened‐paths
Displays BGP routes that are currently dampened.
Syntax
show ip bgp dampened-paths
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display the BGP routes that are currently dampened.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 155
show ip bgp filter‐list <as‐path‐list‐name>
Displays routes matching a list of autonomous system paths.
Syntax
show ip bgp filter-list as-path-list-name
Command Mode
Operational mode.
Parameters
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
Use this command to filter displayed routes according to preconfigured list of
autonomous system paths.
BGP filter lists are defined using the policy command. For information about
creating filter lists, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 156
show ip bgp flap‐statistics
Displays route flap statistics for BGP routes.
Syntax
show ip bgp flap-statistics [ipv4 | ipv4net [longer-prefixes]
Command Mode
Operational mode.
Parameters
ipv4
Optional. Displays flap statistics for routes matching the
specified IPv4 address.
ipv4net
Optional. Displays flap statistics for routes matching the
specified IPv4 network.
longer-prefixes
Optional. Displays any routes more specific than the one
specified.
Default
Displays route flap statistics for all BGP routes.
Usage Guidelines
Use this command to display statistics for flapping BGP routes.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 157
show ip bgp flap‐statistics cidr‐only
Displays only route flap statistics for BGP routes with CIDR network masks.
Syntax
show ip bgp flap-statistics cidr-only
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display route flap statistics for BGP routes with non-natural
network masks; that is, Classless Inter Domain Routing (CIDR) network masks.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 158
show ip bgp flap‐statistics filter‐list <as‐path‐list‐name>
Displays route flap statistics for BGP routes matching a list of AS paths.
Syntax
show ip bgp flap-statistics filter-list as-path-list-name
Command Mode
Operational mode.
Parameters
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
Use this command to display route flap statistics for BGP routes matching a
preconfigured access list of autonomous system (AS) paths.
AS path filter lists are configured using the policy command. For information about
creating path filter lists, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 159
show ip bgp flap‐statistics prefix‐list <list‐name>
Displays route flap statistics for BGP routes matching a prefix list.
Syntax
show ip bgp flap-statistics prefix-list list-name
Command Mode
Operational mode.
Parameters
list-name
Mandatory. The name of a defined prefix list.
Default
None.
Usage Guidelines
Use this command to display BGP statistics for BGP routes matching a list of network
prefixes.
Prefix lists are configured using using the policy command. For information about
creating filter lists, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 160
show ip bgp flap‐statistics regexp <expr>
Displays route flap statistics for BGP routes matching an AS path regular expression.
Syntax
show ip bgp flap-statistics regexp expr
Command Mode
Operational mode.
Parameters
expr
Mandatory. A POSIX-style regular expression representing a set
of AS paths.
Default
Displays flap statistics for all BGP routes by default.
Usage Guidelines
Use this command to display route flap statistics for BGP routes matching a regular
expression representing a set of autonomous system (AS) paths.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 161
show ip bgp flap‐statistics route‐map <map‐name>
Displays route flap statistics for BGP routes matching a route map.
Syntax
show ip bgp flap-statistics route-map map-name
Command Mode
Operational mode.
Parameters
map-name
Optional. The name of a defined route map.
Default
Displays flap statistics for all BGP routes by default.
Usage Guidelines
Use this command to display route flap statistics for BGP routes matching a
preconfigured route map.
Route maps are configured using the policy command. For information about
creating route maps, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 162
show ip bgp ipv4 unicast
Displays information for IPv4 unicast BGP routes.
Syntax
show ip bgp ipv4 unicast [ipv4 | ipv4net [longer-prefixes] | summary]
Command Mode
Operational
Parameters
ipv4
Optional. Show BGP information for the specified address.
ipv4net
Optional. Show BGP information for the specified network.
longer-prefixes
Optional. Displays any routes more specific than the one
specified.
summary
Optional. Displays summary IPv4 unicast route
information.
Default
Displays all IPv4 unicast BGP routes by default.
Usage Guidelines
Use this command to display IPv4 unicast routes in the BGP routing table.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 163
show ip bgp ipv4 unicast cidr‐only
Displays IPv4 unicast BGP routes with CIDR network masks.
Syntax
show ip bgp ipv4 unicast cidr-only
Command Mode
Operational
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display only BGP IPv4 unicast routes with non-natural network
masks; that is, Classless Inter Domain Routing (CIDR) network masks.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 164
show ip bgp ipv4 unicast community <community>
Displays IPv4 unicast BGP routes belonging to the specified community.
Syntax
show ip bgp ipv4 unicast community community [exact-match]
Command Mode
Operational mode.
Parameters
community
Mandatory. A BGP community identifier in the form AA:NN
(where AA and NN are in the range of 0-65535), one of the
well-known BGP communities local-AS, no-export, or
no-advertise, or a space-separated list of up to four community
identifiers.
exact-match
Optional. Displays only routes that have an exact match.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast routes belonging to up to four BGP
communities.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 165
show ip bgp ipv4 unicast community‐list <list‐name>
Displays IPv4 unicast BGP routes permitted by the specified community list.
Syntax
show ip bgp ipv4 unicast community-list list-name [exact-match]
Command Mode
Operational mode.
Parameters
list-name
Mandatory. A preconfigured list of BGP communities.
exact-match
Optional. Displays routes that have an exact match.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast routes permitted by the specified
community list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 166
show ip bgp ipv4 unicast filter‐list <as‐path‐list‐name>
Displays IPv4 unicast BGP routes permitted by the specified AS path list.
Syntax
show ip bgp ipv4 unicast filter-list as-path-list-name
Command Mode
Operational mode.
Parameters
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast routes permitted by the specified AS
path list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 167
show ip bgp ipv4 unicast paths
Displays BGP IPv4 unicast path information.
Syntax
show ip bgp ipv4 unicast paths
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast path information.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 168
show ip bgp ipv4 unicast prefix‐list <list‐name>
Displays IPv4 unicast BGP routes matching a prefix list.
Syntax
show ip bgp ipv4 unicast prefix-list list-name
Command Mode
Operational mode.
Parameters
list-name
Mandatory. Name of a defined prefix list.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast routes matching a preconfigured
prefix list.
Prefix lists are configured using the policy command. For information about creating
prefix lists, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 169
show ip bgp ipv4 unicast regexp <regexp>
Displays IPv4 unicast BGP routes matching an AS path regular expression.
Syntax
show ip bgp ipv4 unicast regexp regexp
Command Mode
Operational mode.
Parameters
regexp
Mandatory. A POSIX-style regular expression representing a set
of AS paths.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast routes matching the specified AS path
regular expression.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 170
show ip bgp ipv4 unicast route‐map <map‐name>
Displays IPv4 unicast BGP routes matching a route map.
Syntax
show ip bgp ipv4 unicast route-map map-name
Command Mode
Operational mode.
Parameters
map-name
Mandatory. Name of a defined route map.
Default
None.
Usage Guidelines
Use this command to display IPv4 unicast BGP routes matching a preconfigured
route map.
Route maps are defined using the policy command. For information about creating
route maps, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 171
show ip bgp ipv4 unicast statistics
Displays statistics for BGP IPv4 unicast routes.
Syntax
show ip bgp ipv4 unicast statistics
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast statistics.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 172
show ip bgp ipv4 unicast summary
Displays a summary of BGP IPv4 unicast information.
Syntax
show ip bgp ipv4 unicast summary
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display a summary of BGP IPv4 unicast information.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 173
show ip bgp memory
Displays memory usage for BGP.
Syntax
show ip bgp memory
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display the amount of memory being used for BGP, including
the RIB, cache entries, attributes, AS-PATH entries, and hashes.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 174
show ip bgp paths
Displays all BGP paths.
Syntax
show ip bgp paths
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display all BGP paths.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 175
show ip bgp prefix‐list <list‐name>
Displays BGP routes matching a prefix list.
Syntax
show ip bgp prefix-list list-name
Command Mode
Operational mode.
Parameters
list-name
Mandatory. Name of a defined prefix list.
Default
None.
Usage Guidelines
Use this command to display routes that match a preconfigured prefix list.
Prefix lists are configured using the policy command. For information about creating
prefix lists, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 176
show ip bgp regexp <regexp>
Displays routes matching an AS path regular expression.
Syntax
show ip bgp regexp regexp
Command Mode
Operational mode.
Parameters
regexp
Mandatory. A POSIX-style regular expression representing a set
of AS paths.
Default
None.
Usage Guidelines
Use this command to display routes matching a regular expression representing an
autonomous system (AS) path list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 177
show ip bgp route‐map <map‐name>
Displays routes matching a route map.
Syntax
show ip bgp route-map map-name
Command Mode
Operational mode.
Parameters
map-name
Optional. The name of a defined route map.
Default
None.
Usage Guidelines
Use this command to display routes matching a preconfigured route map.
Route maps are defined using the policy command. For information about creating
route maps, see the Vyatta Routing Policies Reference Guide.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 178
show ip bgp scan
Displays BGP scan status.
Syntax
show ip bgp scan
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP scan status.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 179
show ip route bgp Displays BGP routes.
Syntax
show ip route bgp
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP routes.
Examples
Example 2-1 shows BGP routes.
Example 2‐1 “show ip route bgp”: Displaying BGP routes
vyatta@vyatta:~$ show ip route bgp
Codes: K ‐ kernel route, C ‐ connected, S ‐ static, R ‐ RIP, O ‐ OSPF,
I ‐ ISIS, B ‐ BGP, > ‐ selected route, * ‐ FIB route
B 10.1.0.0/24 [20/75] via 10.1.0.4 inactive, 1d00h46m
B>* 10.100.100.4/32 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h46m
B>* 10.104.104.4/32 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h46m
B>* 172.16.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.1.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.2.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.3.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.4.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.5.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 180
B>* 172.20.6.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.7.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.8.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.20.9.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.21.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.22.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.23.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.24.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.25.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.26.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.27.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.28.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 172.29.0.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 1d00h36m
B>* 192.168.3.0/24 [20/75] via 10.1.0.4 (recursive via 10.3.0.1), 05:15:56
vyatta@vyatta:~$
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 181
show ipv6 bgp Displays BGP routes.
Syntax
show ipv6 bgp [ipv6 | ipv6net [longer-prefixes] | summary]
Command Mode
Operational mode.
Parameters
ipv6
Optional. Displays routes for the neighbor at the specified
IPv6 address.
ipv6net
Optional. Displays routes for the specified IPv6 network.
longer-prefixes
Optional. Displays any routes more specific than the one
specified.
summary
Optional. Shows summary BGP route information.
Default
Displays all BGP routes by default.
Usage Guidelines
Use this command to display the BGP routing table.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 182
show ipv6 bgp community <community>
Displays BGP routes belonging to the specified BGP community.
Syntax
show ipv6 bgp community community [exact-match]
Command Mode
Operational mode.
Parameters
community
Mandatory. A BGP community identifier in the form AA:NN
(where AA and NN are in the range of 0-65535), one of the
well-known BGP communities local-AS, no-export, or
no-advertise, or a space-separated list of up to four community
identifiers.
exact-match
Optional. Displays only routes that have an exact match.
Default
None.
Usage Guidelines
Use this command to display the BGP routes belonging to up to four BGP
communities.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 183
show ipv6 bgp community‐list <list‐name>
Displays BGP routes permitted by the specified community list.
Syntax
show ipv6 bgp community-list list-name [exact-match]
Command Mode
Operational mode.
Parameters
list-name
Mandatory. A preconfigured list of BGP communities.
exact-match
Optional. Displays only route that have an exact match.
Default
None.
Usage Guidelines
Use this command to display the BGP routes permitted by the specified community
list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 184
show ipv6 bgp filter‐list <as‐path‐list‐name>
Displays routes matching a list of autonomous system paths.
Syntax
show ipv6 bgp filter-list as-path-list-name
Command Mode
Operational mode.
Parameters
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
Use this command to filter displayed routes according to preconfigured list of
autonomous system paths.
BGP filter lists are defined using the the policy as-path-list command.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 185
show ipv6 bgp prefix‐list <list‐name>
Displays BGP routes matching a prefix list.
Syntax
show ipv6 bgp prefix-list list-name
Command Mode
Operational mode.
Parameters
list-name
Mandatory. Name of a defined prefix list.
Default
None.
Usage Guidelines
Use this command to display routes that match a preconfigured prefix list.
Prefix lists are configured using the policy prefix-list command.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 186
show ipv6 bgp regexp <regexp>
Displays routes matching an AS path regular expression.
Syntax
show ipv6 bgp regexp regexp
Command Mode
Operational mode.
Parameters
regexp
Mandatory. A POSIX-style regular expression representing a set
of AS paths.
Default
None.
Usage Guidelines
Use this command to display routes matching a regular expression representing an
autonomous system (AS) path list.
BGP
R6.4 v01
Vyatta
Chapter 2: Global and Router‐Specific Configuration Global and Router‐Specific Commands 187
show monitoring protocols bgp Displays BGP protocol debugging flags.
Syntax
show monitoring protocols bgp
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display BGP protocol debugging flags.
BGP
R6.4 v01
Vyatta
188
Chapter 3: Route Reflection
This chapter describes commands for for BGP route reflection.
This chapter presents the following topics:
•
BGP
Route Reflection Commands
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 189
Route Reflection Commands
This chapter contains the following commands.
Configuration Commands
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐reflector‐client
Specify this neighbor as a route reflector client.
protocols bgp <asn> neighbor <id> route‐reflector‐client
Defines the local router as a BGP route reflector, with the neighbor as a route reflector client.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐reflector‐client
Specify this peer group as a route reflector client.
protocols bgp <asn> peer‐group <group‐name> route‐reflector‐client
Specify this peer group as a route reflector client.
protocols bgp <asn> parameters cluster‐id <id>
Sets the cluster ID for a BGP route reflection cluster.
protocols bgp <asn> parameters no‐client‐to‐client‐reflection
Enables or disables route reflection from a BGP route reflector to clients.
Operational Commands
None.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 190
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐reflector‐client
Specify this neighbor as a route reflector client.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast route-reflector-client
delete protocols bgp asn neighbor id address-family ipv6-unicast
route-reflector-client
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
route‐reflector‐client
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 191
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to configure the BGP neighbor as a route reflector
client.
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 192
protocols bgp <asn> neighbor <id> route‐reflector‐client
Defines the local router as a BGP route reflector, with the neighbor as a route
reflector client.
Syntax
set protocols bgp asn neighbor id route-reflector-client
delete protocols bgp asn neighbor id route-reflector-client
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
route‐reflector‐client
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
There is no route reflector in the autonomous system.
Usage Guidelines
Use the set form of this command to make the local router a BGP route reflector, and
to designate the specified neighbor as a route reflector client.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 193
Another technology designed to help ASs with large numbers of iBGP peers is route
reflection. In a standard BGP implementation, all iBGP peers must be fully meshed.
because of this requirement, when an iBGP peer learns a route from another iBGP
peer, the receiving router does not forward the route to any of its iBGP peers, since
these routers should have learned the route directly from the announcing router.
In a route reflector environment the iBGP peers are no longer fully meshed. Instead,
each iBGP peer has an iBGP connection to one or more route reflectors (RRs).
Routers configured with a connection to an RR server are referred to as RR clients.
Only the RR server is configured to be aware that the RR client is part of an RR
configuration; from the RR client’s point of view, it is configured normally, and does
not have any awareness that it is part of a RR configuration.
In route reflection, internal peers of an RR server are categorized into two types:
•
Client peers. The RR server and its client peers form a cluster. Within a cluster,
client peers need not be fully meshed, but must have an iBGP connection to at
least one RR in the cluster.
•
Non-client peers. Non-client peers, including the RR server, must be fully
meshed.
An RR environment is unlike a regular environment, where iBGP peers never
forward a route update to other iBGP peers (which is the reason why each iBGP peer
must peer with all other peers). When an RR server receives an iBGP update from an
RR client, these route updates can also be sent to all other RR clients. When an RR
server receives a route update from a peer, it selects the best path based on its path
selection rule. After the best path is selected, the RR server chooses its action
depending on the type of the peer from which it learned the best path.
•
If the route was learned from a client peer, the RR reflects the route to both client
and non-client peers. All iBGP updates from client peers are reflected to all other
client peers in the cluster. This is done regardless of whether the update was the
best path for the RR itself.
•
If the route was learned from a non-client iBGP peer, it is reflected out to all RR
client peers.
•
If the route was learned from an eBGP peer, the route is reflected to all RR clients
and all non-clients.
Use the delete form of this command to remove the neighbor as a route reflector
client.
Use the show form of this command to view BGP neighbor configuration settings.
Usage Guidelines
Use the set form of this command to disable route reflection from a BGP route
reflector to clients. When client-to-client route reflection is enabled, the configured
route reflector reflects routes from one client to other clients.
Use the delete form of this command to enable client-to-client route reflection.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 194
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 195
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐reflector‐client
Specify this peer group as a route reflector client.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
route-reflector-client
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
route-reflector-client
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
route‐reflector‐client
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 196
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to configure the BGP peer group as a route
reflector client.
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 197
protocols bgp <asn> peer‐group <group‐name> route‐reflector‐client
Specify this peer group as a route reflector client.
Syntax
set protocols bgp asn peer-group group-name route-reflector-client
delete protocols bgp asn peer-group group-name route-reflector-client
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
route‐reflector‐client
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Disabled.
Usage Guidelines
Use the set form of this command to configure the BGP peer group as a route
reflector client.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 198
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 199
protocols bgp <asn> parameters cluster‐id <id>
Sets the cluster ID for a BGP route reflection cluster.
Syntax
set protocols bgp asn parameters cluster-id id
delete protocols bgp asn parameters cluster-id id
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
cluster‐id id
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. A network address uniquely identifying the route
reflection cluster.
Default
None.
Usage Guidelines
Use the set form of this command to specify the route reflection cluster ID for an
internal route reflection cluster.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 200
When there is only one route reflector in a cluster, the cluster uses the router ID of
the route reflector as an ID. If more than one route reflector is deployed in a cluster
(for example, to provide redundancy), you must provide an ID for the cluster. In this
case, the cluster ID is assigned to every route reflector in the cluster.
Use the delete form of this command to remove a cluster ID.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 201
protocols bgp <asn> parameters no‐client‐to‐client‐reflection
Enables or disables route reflection from a BGP route reflector to clients.
Syntax
set protocols bgp asn parameters no-client-to-client-reflection
delete protocols bgp asn parameters no-client-to-client-reflection
show protocols bgp asn parameters
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
no‐client‐to‐client‐reflection
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
Default
By default client-to-client-reflection is enabled.
Usage Guidelines
Use the set form of this command to disable route reflection from a BGP route
reflector to clients. When client-to-client route reflection is enabled, the configured
route reflector reflects routes from one client to other clients.
BGP
R6.4 v01
Vyatta
Chapter 3: Route Reflection Route Reflection Commands 202
Use the delete form of this command to enable client-to-client route reflection.
Use the show form of this command to view global BGP configuration settings.
BGP
R6.4 v01
Vyatta
203
Chapter 4: Confederations
This chapter describes commands for BGP confederations.
This chapter presents the following topics:
•
BGP
Confederation Commands
R6.4 v01
Vyatta
Chapter 4: Confederations Confederation Commands 204
Confederation Commands
This chapter contains the following commands.
Configuration Commands
protocols bgp <asn> parameters confederation identifier <asn>
Defines a BGP confederation.
protocols bgp <asn> parameters confederation peers <asn>
Defines the autonomous systems that make up a BGP confederation.
Operational Commands
None.
BGP
R6.4 v01
Vyatta
Chapter 4: Confederations Confederation Commands 205
protocols bgp <asn> parameters confederation identifier <asn>
Defines a BGP confederation.
Syntax
set protocols bgp asn parameters confederation identifier asn
delete protocols bgp asn parameters confederation identifier asn
show protocols bgp asn parameters confederation
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
confederation {
identifier asn
}
}
}
}
Parameters
BGP
asn
Mandatory. The number of the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
identifier asn
Mandatory. The AS number of the BGP confederation.
The range of values is 1 to 4294967294. The subrange
64512 to 65534 is reserved for private autonomous
systems.
R6.4 v01
Vyatta
Chapter 4: Confederations Confederation Commands 206
Default
None.
Usage Guidelines
Use the set form of this command to create a BGP confederation.
Use the delete form of this command to remove the BGP confederation.
Use the show form of this command to view BGP confederation configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 4: Confederations Confederation Commands 207
protocols bgp <asn> parameters confederation peers <asn>
Defines the autonomous systems that make up a BGP confederation.
Syntax
set protocols bgp asn parameters confederation peers asn [asn... asn]
delete protocols bgp asn parameters confederation peers asn [asn... asn]
show protocols bgp asn parameters confederation
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
parameters {
confederation {
peers asn
}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router
resides.
peers asn
Mandatory. The subautonomous systems that will make
up the BGP confederation. The range of values is 1 to
4294967294. The subrange 64512 to 65534 is reserved
for private autonomous systems. Multiple ASs can be
specified in a space-separated list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 4: Confederations Confederation Commands 208
Usage Guidelines
Use the set form of this command to list the subautonomous systems that will be the
members of a BGP confederation. To a peer outside the confederation, the
confederation appears as a single autonomous system.
Use the delete form of this command to remove an AS from a confederation.
Use the show form of this command to view BGP confederation configuration
settings.
BGP
R6.4 v01
Vyatta
209
Chapter 5: Neighbors
This chapter describes commands for BGP neighbors .
This chapter presents the following topics:
•
BGP
Neighbor Commands
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 210
Neighbor Commands
This chapter contains the following commands.
Configuration Commands
protocols bgp <asn> neighbor <id>
Defines a BGP neighbor.
protocols bgp <asn> neighbor <id> advertisement‐interval <seconds>
Sets the minimum interval for BGP route updates.
protocols bgp <asn> neighbor <id> allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local router.
protocols bgp <asn> neighbor <id> attribute‐unchanged
Allows the router to send updates to a neighbor with unchanged attributes.
protocols bgp <asn> neighbor <id> capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received from this neighbor.
protocols bgp <asn> neighbor <id> capability orf
Enables or disables forwarding of the default route to a BGP neighbor.
protocols bgp <asn> neighbor <id> default‐originate
Provides a brief description for a BGP neighbor.
protocols bgp <asn> neighbor <id> description <desc>
Provides a brief description for a BGP neighbor.
protocols bgp <asn> neighbor <id> disable‐capability‐negotiation
Disables BGP capability negotiation.
protocols bgp <asn> neighbor <id> disable‐connected‐check
Disables direct connection verification for single‐hop eBGP peers.
protocols bgp <asn> neighbor <id> disable‐send‐community
Disables sending of community attributes to the specified neighbor.
protocols bgp <asn> neighbor <id> distribute‐list export <acl‐num>
Applies an access list to filter outbound routing updates to this neighbor.
protocols bgp <asn> neighbor <id> distribute‐list import <acl‐num>
Applies an access list to filter inbound routing updates from this neighbor.
protocols bgp <asn> neighbor <id> ebgp‐multihop <ttl> Allows eBGP neighbors not on directly connected networks.
protocols bgp <asn> neighbor <id> filter‐list export <as‐path‐list‐name>
Applies an AS path list to routing updates to this neighbor.
protocols bgp <asn> neighbor <id> filter‐list import <as‐path‐list‐name>
Applies an AS path list to routing updates from this neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 211
protocols bgp <asn> neighbor <id> local‐as <asn>
Defines a local autonomous system number for eBGP peerings.
protocols bgp <asn> neighbor <id> maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this neighbor before that neighbor is taken down.
protocols bgp <asn> neighbor <id> nexthop‐self
Sets the local router as the next hop for this neighbor.
protocols bgp <asn> neighbor <id> override‐capability
Overrides capability negotiation to allow a peering session to be established with a neighbor that does not support capability negotiation.
protocols bgp <asn> neighbor <id> passive
Directs the router not to initiate connections with this neighbor.
protocols bgp <asn> neighbor <id> password <pwd>
Defines a BGP MD5 password.
protocols bgp <asn> neighbor <id> peer‐group <group‐name>
Assigns a neighbor as a member of the specified peer group.
protocols bgp <asn> neighbor <id> port <port‐num>
Specifies the port on which the neighbor is listening for BGP signals.
protocols bgp <asn> neighbor <id> prefix‐list export <list‐name>
Applies a prefix list to filter updates to this neighbor.
protocols bgp <asn> neighbor <id> prefix‐list import <list‐name>
Applies a prefix list to filter updates from this neighbor.
protocols bgp <asn> neighbor <id> remote‐as <asn>
Specifies the autonomous system number of the neighbor.
protocols bgp <asn> neighbor <id> remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this neighbor.
protocols bgp <asn> neighbor <id> route‐map export <map‐name>
Applies a route map to filter updates to this neighbor.
protocols bgp <asn> neighbor <id> route‐map import <map‐name>
Applies a route map to filter updates to or from this neighbor.
protocols bgp <asn> neighbor <id> shutdown
Administratively shuts down a BGP neighbor.
protocols bgp <asn> neighbor <id> soft‐reconfiguration Directs the router to store received routing updates.
inbound
protocols bgp <asn> neighbor <id> strict‐capability‐match
Directs the router to strictly match the capabilities of the neighbor.
protocols bgp <asn> neighbor <id> timers
Sets BGP timers for this neighbor.
protocols bgp <asn> neighbor <id> ttl‐security hops <hops>
Sets Time to Live (TTL) security hop count.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 212
protocols bgp <asn> neighbor <id> unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses, based on a route map.
protocols bgp <asn> neighbor <id> update‐source <source>
Specifies the source IP address or interface for routing updates.
protocols bgp <asn> neighbor <id> weight <weight>
Defines a default weight for routes from this neighbor.
Neighbor Commands ‐ IPv6 Routes
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast
Defines parameters for controlling IPv6 unicast routes for a peering session.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local router.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast attribute‐unchanged
Allows the router to send updates to a neighbor with unchanged attributes.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP capabilities advertised and received from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast default‐originate
Enables or disables forwarding of the default route to a BGP neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast disable‐send‐community
Disables sending of community attributes to the specified neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name>
Applies an access list to filter outbound routing updates to this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name>
Applies an access list to filter inbound routing updates from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name>
Applies a filter list to routing updates to this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name>
Applies a filter list to routing updates from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this neighbor before that neighbor is taken down.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐local unchanged
Specifies that the IPv6 link‐local address is not changed when the prefix is announced to the peer.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐self
Sets the local router as the next hop for this neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 213
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast peer‐group <group‐name>
Specifies the IPv6 peer group for this peer.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name>
Applies a prefix list to filter updates to this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name>
Applies a prefix list to filter updates from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map export <map‐name>
Applies a route map to filter updates to this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map import <map‐name>
Applies a route map to filter updates to or from this neighbor.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast soft‐reconfiguration inbound
Directs the router to store received routing updates.
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses, based on a route map.
Operational Commands
reset ip bgp external
Resets peering sessions for eBGP neighbors.
reset ip bgp external ipv4 unicast
Resets IPv4 unicast peering sessions for eBGP neighbors.
show ip bgp ipv4 unicast neighbors
Displays IPv4 unicast route information for BGP neighbors.
show ip bgp ipv4 unicast neighbors <id> advertised‐routes
Displays advertised BGP IPv4 unicast routes for a BGP neighbor.
show ip bgp ipv4 unicast neighbors <id> prefix‐counts
Displays IPv4 unicast prefix‐counts for a BGP neighbor.
show ip bgp ipv4 unicast neighbors <id> received prefix‐filter
Displays the IPv4 unicast prefix‐lists received from a BGP neighbor.
show ip bgp ipv4 unicast neighbors <id> received‐routes
Displays the IPv4 unicast routes received from a BGP neighbor.
show ip bgp ipv4 unicast neighbors <id> routes
Displays IPv4 unicast received and accepted routes from a BGP neighbor.
show ip bgp neighbors
Displays BGP neighbor information.
show ip bgp neighbors <id> advertised‐routes
Displays advertised routes for a BGP neighbor.
show ip bgp neighbors <id> dampened‐routes
Displays dampened routes to a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 214
show ip bgp neighbors <id> flap‐statistics
Displays route flap statistics for routes learned from a BGP neighbor.
show ip bgp neighbors <id> prefix‐counts
Displays prefix counts for a BGP neighbor.
show ip bgp neighbors <id> received prefix‐filter
Displays prefix lists received from a BGP neighbor.
show ip bgp neighbors <id> received‐routes
Displays routes received from a BGP neighbor.
show ip bgp neighbors <id> routes
Displays all received and accepted routes from a BGP neighbor.
show ipv6 bgp neighbors
Displays BGP neighbor information.
show ipv6 bgp neighbors <ipv6> advertised‐routes
Displays advertised routes for a BGP neighbor.
show ipv6 bgp neighbors <ipv6> received‐routes
Displays routes received from a BGP neighbor.
show ipv6 bgp neighbors <ipv6> routes
Displays all received and accepted routes from a BGP neighbor.
Some command for working with BGP neighbors are described in other chapters.
Related Commands Documented Elsewhere
protocols bgp <asn> parameters log‐neighbor‐changes See “Chapter 2: Global and Router‐Specific Configuration.”
protocols bgp <asn> neighbor <id> route‐reflector‐client
See “Chapter 3: Route Reflection.”
protocols bgp <asn> parameters confederation peers <asn>
See “Chapter 4: Confederations.”
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 215
protocols bgp <asn> neighbor <id>
Defines a BGP neighbor.
Syntax
set protocols bgp asn neighbor id
delete protocols bgp asn neighbor id
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. Multi-node. The IPv4 or IPv6 address of a BGP
neighbor.
You can define multiple BGP neighbors by creating multiple
neighbor configuration nodes.
Default
None.
Usage Guidelines
Use the set form of this command to define a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 216
Use the delete form of this command to remove a BGP neighbor.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 217
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast Defines parameters for controlling IPv6 unicast routes for a peering session.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast
delete protocols bgp asn neighbor id address-family ipv6-unicast
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Usage Guidelines
Use this command to define parameters for IPv6 unicast routes for a peering session.
Creating this configuration node activates the peer to receive IPv6 prefixes.
Use the set form of this command to specify the configuration node.
Use the delete form of this command to delete the ipv6-unicast configuration.
Use the show form of this command to view the ipv6-unicast configuration.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 218
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local
router.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast allowas-in [number
num]
delete protocols bgp asn neighbor id address-family ipv6-unicast allowas-in
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
allowas‐in {
number num
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 219
number num Optional. Specifies the number of times to accept an AS path
containing the readvertisement of the local router’s ASN. The
range is 1 to 10. The default is 3.
Default
Readvertisement is disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to allow the router to accept BGP AS paths
advertising the router’s own AS number.
This situation could indicate a routing loop, and by default such an update is
dropped. However, you can use this command to direct the router to accept updates
readvertising its AS number for a specified number of times.
Use the delete form of this command to disallow readvertisement of the router’s AS
path.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 220
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast attribute‐unchanged
Allows the router to send updates to a neighbor with unchanged attributes.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast attribute-unchanged
[as-path | med | next-hop]
delete protocols bgp asn neighbor id address-family ipv6-unicast
attribute-unchanged [as-path | med | next-hop]
show protocols bgp asn neighbor id address-family ipv6-unicast attribute-unchanged
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
attribute‐unchanged {
as‐path
med
next‐hop
}
}
}
}
}
}
Parameters
asn
BGP
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 221
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path
Optional. Propagates the route update with unchanged
AS_PATH attribute.
med
Optional. Propagates the route update with unchanged
Multi Exit Discriminator.
next-hop
Optional. Propagates the route update with unchanged
next hop.
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to propagate routing updates
without modifying the BGP AS_PATH, Multi Exit Discriminator (MED), or
next-hop attribute.
Use the delete form of this command to restore normal modification of BGP
attributes.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 222
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received
from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast capability dynamic
delete protocols bgp asn neighbor id address-family ipv6-unicast capability dynamic
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
capability {
dynamic
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 223
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
In general, BGP requires that if a BGP speaker receives an OPEN message with any
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of the BGP Dynamic Capability feature, which allows
dynamic update of capabilities over an established BGP session.
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify dynamic update of BGP capabilities to
be used in capability negotiation.
Use the delete form of this command to remove the dynamic update capability.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 224
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP
capabilities advertised and received from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast capability orf
[prefix-list [receive | send]]
delete protocols bgp asn neighbor id address-family ipv6-unicast capability orf
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
capability {
orf {
prefix‐list {
receive
send
}
}
}
}
}
}
}
}
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 225
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
prefix-list
Optional. Advertise prefix-list ORF capability to this neighbor.
receive
Optional. Advertise the ability to receive the ORF from this
neighbor.
send
Optional. Advertise the capability to send the ORF to this
neighbor.
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
This command specifies use of BGP Outbound Route Filtering (ORF) to send and
receive capabilities. Using ORF minimizes the number of BGP updates that are sent
between peer routers.
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify BGP ORF capabilities to be used in
capability negotiation.
Use the delete form of this command to remove the ORF capability.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 226
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast default‐originate
Enables or disables forwarding of the default route to a BGP neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast default-originate
[route-map map-name]
delete protocols bgp asn neighbor id address-family ipv6-unicast default-originate
[route-map map-name]
show protocols bgp asn neighbor id address-family ipv6-unicast default-originate
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
default‐originate {
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 227
map-name
Optional. Specifies a configured route map to be used
when advertising the default route.
Default
The default route is not distributed.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to enable the router to advertise the default route
::/0 to this BGP neighbor. This route can then be used by the neighbor to reach the
local router if no other routes are available.
The route ::/0 need not be explicitly configured on the local router.
If a route map is specified, the default route is advertised if two conditions are
satisfied:
•
The route map includes a match ip address clause.
•
A route exists that exactly matches the IP access list.
Route maps are configured using protocols bgp <asn> neighbor <id> local-as <asn>
command.
Use the delete form of this command to disable forwarding of the default route or to
delete a route map.
Use the show form of this command to view BGP neighbor default route origination
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 228
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast disable‐send‐community
Disables sending of community attributes to the specified neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast
disable-send-community [extended | standard]
delete protocols bgp asn neighbor id address-family ipv6-unicast
disable-send-community
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
disable‐send‐community {
extended
standard
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
extended
Optional. Disable sending extended community attributes.
R6.4 v01
Vyatta
Chapter 5: Neighbors standard
Neighbor Commands 229
Optional. Disable sending standard community attributes.
Default
Communities are sent by default.
Usage Guidelines
Use this command to enable and disable sending community attributes between BGP
neighbors.
This command applies to IPv6 unicast routes only.
Use the set form of this command to disable sending community attributes.
Use the delete form of this command to restore sending community attributes.
Use the show form of this command to view BGP neighbor configuration settings
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 230
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name>
Applies an access list to filter outbound routing updates to this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast distribute-list export
access-list6-name
delete protocols bgp asn neighbor id address-family ipv6-unicast distribute-list
export
show protocols bgp asn neighbor id address-family ipv6-unicast distribute-list
export
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
distribute‐list {
export access‐list6‐name
}
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
access-list6-name Optional. The name of the IPv6 access-list.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 231
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list to filter outbound routing
updates to a BGP neighbor.
Use the delete form of this command to disable outbound distribute list filtering.
Use the show form of this command to view BGP neighbor distribute list
configuration settings.
NOTE A neighbor distribute list cannot be used together with a neighbor prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to a given direction.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 232
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name>
Applies an access list to filter inbound routing updates from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast distribute-list import
access-list6-name
delete protocols bgp asn neighbor id address-family ipv6-unicast distribute-list
import
show protocols bgp asn neighbor id address-family ipv6-unicast distribute-list
import
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
distribute‐list {
import access‐list6‐name
}
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
access-list6-name Optional. The name of the IPv6 access-list.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 233
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list to filter inbound routing
updates from a BGP neighbor.
Use the delete form of this command to disable inbound distribute list filtering.
Use the show form of this command to view BGP neighbor distribute list
configuration settings.
NOTE A neighbor distribute list cannot be used together with a neighbor prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to the specified direction.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 234
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name>
Applies a filter list to routing updates to this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast filter-list export
as-path-list-name
delete protocols bgp asn neighbor id address-family ipv6-unicast filter-list export
as-path-list-name
show protocols bgp asn neighbor id address-family ipv6-unicast filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
filter‐list {
export as‐path‐list‐name
}
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path-list-name Mandatory. Name of an autonomous system path list.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 235
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list for filtering outbound
routing updates.
Use the delete form of this command to disable outbound routing update filtering.
Use the show form of this command to view BGP neighbor filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 236
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name>
Applies a filter list to routing updates from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast filter-list import
as-path-list-name
delete protocols bgp asn neighbor id address-family ipv6-unicast filter-list import
as-path-list-name
show protocols bgp asn neighbor id address-family ipv6-unicast filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
filter‐list {
import as‐path‐list‐name
}
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path-list-name Mandatory. Name of an autonomous system path list.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 237
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list for filtering inbound routing
updates.
Use the delete form of this command to disable inbound routing update filtering.
Use the show form of this command to view BGP neighbor filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 238
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this neighbor before that
neighbor is taken down.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast maximum-prefix
max-num
delete protocols bgp asn neighbor id address-family ipv6-unicast maximum-prefix
show protocols bgp asn neighbor id address-family ipv6-unicast maximum-prefix
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
maximum‐prefix max‐num
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
max-num
Mandatory. The maximum number of prefixes to accept from
this neighbor before the neighbor is taken down.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 239
Default
No maximum to the number of prefixes accepted.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to set the maximum number of prefixes to accept
from this neighbor before the neighbor is taken down. This helps alleviate situations
where the router receives more routes than it can handle.
Use the delete form of this command to remove the maximum prefix setting.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 240
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐local unchanged
Specifies that the IPv6 link-local address is not changed when the prefix is announced
to the peer.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast nexthop-local
unchanged
delete protocols bgp asn neighbor id address-family ipv6-unicast nexthop-local
show protocols bgp asn neighbor id address-family ipv6-unicast nexthop-local
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
nexthop‐local {
unchanged
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 241
Default
The IPv6 link-local address is changed when the prefix is announced to the peer.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify that the IPv6 link-local address is not
changed when the prefix is announced to the peer.
Use the delete form of this command to return the system to its default behavior.
Use the show form of this command to view BGP neighbor ipv6-unicast
nexthop-local configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 242
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast nexthop‐self
Sets the local router as the next hop for this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast nexthop-self
delete protocols bgp asn neighbor id address-family ipv6-unicast nexthop-self
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
nexthop‐self
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 243
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to set this router as the next hop for this neighbor.
This disables the next-hop calculation for this neighbor.
Use the delete form of this command to restore next-hop calculation for the neighbor.
Use the show form of this command to view BGP neighbor ipv6-unicast
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 244
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast peer‐group <group‐name>
Specifies the IPv6 peer group for this peer.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast peer-group
group-name
delete protocols bgp asn neighbor id address-family ipv6-unicast peer-group
group-name
show protocols bgp asn neighbor id address-family ipv6-unicast peer-group
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
peer‐group group‐name }
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
group-name
Mandatory. Name of an IPv6 peer group.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 245
Default
None.
Usage Guidelines
This command spcifies the IPv6 peer group for the peer.
Use the set form of this command to specify the IPv6 peer group for the peer.
Use the delete form of this command to remove the IPv6 peer group for the peer.
Use the show form of this command to view the IPv6 peer group for the peer.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 246
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name>
Applies a prefix list to filter updates to this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast prefix-list export
prefix-list6-name
delete protocols bgp asn neighbor id address-family ipv6-unicast prefix-list export
prefix-list6-name
show protocols bgp asn neighbor id address-family ipv6-unicast prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
prefix‐list {
export prefix‐list6‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
prefix-list6-name
Mandatory. Name of a configured IPv6 prefix list.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 247
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict distribution of outbound BGP neighbor
information by filtering with a prefix list.
Use the delete form of this command to remove an outbound prefix list filter.
Use the show form of this command to view BGP neighbor prefix list export
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 248
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name>
Applies a prefix list to filter updates from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast prefix-list import
prefix-list6-name
delete protocols bgp asn neighbor id address-family ipv6-unicast prefix-list import
prefix-list6-name
show protocols bgp asn neighbor id address-family ipv6-unicast prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
prefix‐list {
import prefix‐list6‐name
}
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
prefix-list6-name Mandatory. Name of a configured IPv6 prefix list.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 249
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict distribution of inbound BGP neighbor
information by filtering with a prefix list.
Use the delete form of this command to remove an inbound prefix list filter.
Use the show form of this command to view BGP neighbor prefix list import
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 250
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast remove-private-as
delete protocols bgp asn neighbor id address-family ipv6-unicast remove-private-as
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
remove‐private‐as
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Private AS numbers are included in outgoing updates.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 251
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to exclude private autonomous
system (AS) numbers from updates to eBGP peers. When this feature is enabled, the
router omits private AS numbers from the AS_PATH attribute. The range of private
AS numbers is 64512 to 65534.
Note that it is a configuration error to include both private and public AS numbers
in an AS path. If the router detects this error, it does not remove private AS numbers.
This command may be used in confederations provided that the private AS numbers
are appended after the confederation portion of the AS path.
This command applies only to eBGP peers; it cannot be used with iBGP peers.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 252
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map export <map‐name>
Applies a route map to filter updates to this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast route-map export
map-name
delete protocols bgp asn neighbor id address-family ipv6-unicast route-map export
map-name
show protocols bgp asn neighbor id address-family ipv6-unicast route-map export
map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
route‐map {
export map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. Name of a configured route map.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 253
Default
None.
Usage Guidelines
Use the set form of this command to restrict distribution of outbound BGP neighbor
information by filtering with a route map.
Use the delete form of this command to remove an outbound route map filter.
Use the show form of this command to view BGP neighbor route map configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 254
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐map import <map‐name>
Applies a route map to filter updates to or from this neighbor.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast route-map import
map-name
delete protocols bgp asn neighbor id address-family ipv6-unicast route-map import
map-name
show protocols bgp asn neighbor id address-family ipv6-unicast route-map import
map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
route‐map {
import map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. Name of a configured route map.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 255
Default
None.
Usage Guidelines
Use the set form of this command to restrict routing updates received from this BGP
neighbor by filtering with a route map.
Use the delete form of this command to remove a route map filter.
Use the show form of this command to view BGP neighbor route map configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 256
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast soft‐reconfiguration inbound
Directs the router to store received routing updates.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast soft-reconfiguration
inbound
delete protocols bgp asn neighbor id address-family ipv6-unicast
soft-reconfiguration inbound
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
soft‐reconfiguration {
inbound
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 257
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to enable soft reconfiguration.
When this command is issued, the router begins storing routing updates, which can
be used subsequently for inbound soft reconfiguration. Outbound BGP soft
reconfiguration can be performed without enabling inbound soft reconfiguration.
Use the delete form of this command to disable soft reconfiguration.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 258
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses,
based on a route map.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast unsuppress-map
map-name
delete protocols bgp asn neighbor id address-family ipv6-unicast unsuppress-map
map-name
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
unsuppress‐map map‐name
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. The name of a configured route map.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 259
Default
Routes suppressed by address aggregation are not advertised.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to selectively advertise routes suppressed by
aggregating addresses.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 260
protocols bgp <asn> neighbor <id> advertisement‐interval <seconds>
Sets the minimum interval for BGP route updates.
Syntax
set protocols bgp asn neighbor id advertisement-interval seconds
delete protocols bgp asn neighbor id advertisement-interval
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
advertisement‐interval seconds
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
seconds
Mandatory. The minimum interval, in seconds, between BGP
routing updates to this neighbor. The range is 0 to 600. The
default is 30 for eBGP peers and 5 for iBGP peers.
Default
The default advertisement interval is 30 seconds for eBGP peers and 5 seconds for
iBGP peers.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 261
Usage Guidelines
Use the set form of this command to set the minimum interval between BGP routing
advertisements to a BGP neighbor.
Use the delete form of this command to restore the advertisement interval to the
default.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 262
protocols bgp <asn> neighbor <id> allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local
router.
Syntax
set protocols bgp asn neighbor id allowas-in [number num]
delete protocols bgp asn neighbor id allowas-in
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
allowas‐in {
number num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
number num Optional. Specifies the number of times to accept an AS path
containing the readvertisement of the local router’s ASN. The
range is 1 to 10. The default is 3.
Default
Readvertisement is disabled.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 263
Usage Guidelines
Use the set form of this command to allow the router to accept BGP AS paths
advertising the router’s own AS number.
This situation could indicate a routing loop, and by default such an update is
dropped. However, you can use this command to direct the router to accept updates
readvertising its AS number for a specified number of times.
Use the delete form of this command to disallow readvertisement of the router’s AS
path.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 264
protocols bgp <asn> neighbor <id> attribute‐unchanged
Allows the router to send updates to a neighbor with unchanged attributes.
Syntax
set protocols bgp asn neighbor id attribute-unchanged [as-path | med | next-hop]
delete protocols bgp asn neighbor id attribute-unchanged [as-path | med | next-hop]
show protocols bgp asn neighbor id attribute-unchanged
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
attribute‐unchanged {
as‐path
med
next‐hop
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path
Optional. Propagates the route update with unchanged
AS_PATH attribute.
med
Optional. Propagates the route update with unchanged
Multi Exit Discriminator.
R6.4 v01
Vyatta
Chapter 5: Neighbors next-hop
Neighbor Commands 265
Optional. Propagates the route update with unchanged
next hop.
Default
Disabled.
Usage Guidelines
Use the set form of this command to direct the router to propagate routing updates
without modifying the BGP AS_PATH, Multi Exit Discriminator (MED), or
next-hop attribute.
Use the delete form of this command to restore normal modification of BGP
attributes.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 266
protocols bgp <asn> neighbor <id> capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received
from this neighbor.
Syntax
set protocols bgp asn neighbor id capability dynamic
delete protocols bgp asn neighbor id capability dynamic
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
capability {
dynamic
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
By default, the session is brought up with minimal capability on both sides.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 267
Usage Guidelines
In general, BGP-4 requires that if a BGP speaker receives an OPEN message with an
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of the BGP Dynamic Capability feature, which allows
dynamic update of capabilities over an established BGP session.
Use the set form of this command to specify dynamic update of BGP capabilities to
be used in capability negotiation.
Use the delete form of this command to remove the dynamic update capability.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 268
protocols bgp <asn> neighbor <id> capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP
capabilities advertised and received from this neighbor.
Syntax
set protocols bgp asn neighbor id capability orf [prefix-list [receive | send]]
delete protocols bgp asn neighbor id capability orf
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
capability {
orf {
prefix‐list {
receive
send
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
prefix-list
Optional. Advertise prefix-list ORF capability to this neighbor.
receive
Optional. Advertise the ability to receive the ORF from this
neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors send
Neighbor Commands 269
Optional. Advertise the capability to send the ORF to this
neighbor.
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
In general, BGP-4 requires that if a BGP speaker receives an OPEN message with an
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of BGP Outbound Route Filtering (ORF) to send and
receive capabilities. Using ORF minimizes the number of BGP updates that are sent
between peer routers.
Use the set form of this command to specify BGP ORF capabilities to be used in
capability negotiation.
Use the delete form of this command to remove the ORF capability.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 270
protocols bgp <asn> neighbor <id> default‐originate
Enables or disables forwarding of the default route to a BGP neighbor.
Syntax
set protocols bgp asn neighbor id default-originate [route-map map-name]
delete protocols bgp asn neighbor id default-originate [route-map map-name]
show protocols bgp asn neighbor id default-originate
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
default‐originate {
route‐map map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Optional. Specifies a configured route map to be used
when advertising the default route.
Default
The default route is not distributed.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 271
Usage Guidelines
Use the set form of this command to enable the router to advertise the default route
0.0.0.0 to this BGP neighbor. This route can then be used by the neighbor to reach
the local router if no other routes are available.
If a route map is specified, the default route is advertised if two conditions are
satisfied:
•
The route map includes a match ip address clause.
•
A route exists that exactly matches the IP access list.
Route maps are configured using protocols bgp <asn> neighbor <id> local-as <asn>
command.
Use the delete form of this command to disable forwarding of the default route or to
delete a route map.
Use the show form of this command to view BGP neighbor default route origination
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 272
protocols bgp <asn> neighbor <id> description <desc>
Provides a brief description for a BGP neighbor.
Syntax
set protocols bgp asn neighbor id description desc
delete protocols bgp asn neighbor id description
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
description desc
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
desc
Mandatory. A description of up to 80 characters for the
neighbor. If spaces are included, the description must be
enclosed in quotes.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 273
Usage Guidelines
Use the set form of this command to enter a description for this BGP neighbor.
Use the delete form of this command to delete the neighbor’s description.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 274
protocols bgp <asn> neighbor <id> disable‐capability‐negotiation
Disables BGP capability negotiation.
Syntax
set protocols bgp asn neighbor id disable-capability-negotiation
delete protocols bgp asn neighbor id disable-capability-negotiation
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
disable‐capability‐negotiation
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Capability negotiation is performed.
Usage Guidelines
Use the set form of this command to disable BGP capability negotiation.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 275
Use the delete form of this command to delete this attribute and restore BGP
capability negotiation.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 276
protocols bgp <asn> neighbor <id> disable‐connected‐check
Disables direct connection verification for single-hop eBGP peers.
Syntax
set protocols bgp asn neighbor id disable-connected-check
delete protocols bgp asn neighbor id disable-connected-check
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
disable‐connected‐check }
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Connection verification is performed.
Usage Guidelines
Use the set form of this command to disable connection verification.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 277
Connection verification is used to establish an eBGP peering session with a
single-hop peer. A single-hop peer is defined using the neighbor ebgp-multihop
command and specifying a time-to-live (TTL) value of 1. Such a peer is reachable by
a single hop, but is configured on a loopback interface or is otherwise configured
with a non–directly connected IP address.
For these peers, the BGP process normally checks to determine whether the eBGP
peer is directly connected to the same network as the local router. If not, the peering
session is not established.
If connection verification is disabled, source updating must be enabled using
protocols bgp <asn> neighbor <id> update-source <source> command so that the
BGP process can used the loopback interface for the peering session.
Use the delete form of this command to restore connection verification for eBGP
peering sessions.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 278
protocols bgp <asn> neighbor <id> disable‐send‐community
Disables sending of community attributes to the specified neighbor.
Syntax
set protocols bgp asn neighbor id disable-send-community [extended | standard]
delete protocols bgp asn neighbor id disable-send-community
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
disable‐send‐community {
extended
standard
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
extended
Optional. Disable sending extended community attributes.
standard
Optional. Disable sending standard community attributes.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 279
Default
Communities are sent by default.
Usage Guidelines
Use this command to enable and disable sending community attributes between BGP
neighbors.
Use the set form of this command to disable sending community attributes.
Use the delete form of this command to restore sending community attributes.
Use the show form of this command to view BGP neighbor configuration settings
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 280
protocols bgp <asn> neighbor <id> distribute‐list export <acl‐num>
Applies an access list to filter outbound routing updates to this neighbor.
Syntax
set protocols bgp asn neighbor id distribute-list export acl-num
delete protocols bgp asn neighbor id distribute-list
show protocols bgp asn neighbor id distribute-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
distribute‐list {
export acl‐num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
acl-num
Optional. The number of a standard or extended access list. The
range for a standard access list is 1 to 99. The range for an
extended access list is 100 to 199.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 281
Usage Guidelines
Use the set form of this command to apply an access list to filter outbound routing
updates to a BGP neighbor.
Use the delete form of this command to disable outbound distribute list filtering.
Use the show form of this command to view BGP neighbor distribute list
configuration settings.
NOTE A neighbor distribute list cannot be used together with a neighbor prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to a given direction.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 282
protocols bgp <asn> neighbor <id> distribute‐list import <acl‐num>
Applies an access list to filter inbound routing updates from this neighbor.
Syntax
set protocols bgp asn neighbor id distribute-list import acl-num
delete protocols bgp asn neighbor id distribute-list
show protocols bgp asn neighbor id distribute-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
distribute‐list {
import acl‐num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
acl-num
Optional. The number of a standard or extended access list. The
range for a standard access list is 1 to 99. The range for an
extended access list is 100 to 199.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 283
Usage Guidelines
Use the set form of this command to apply an access list to filter inbound routing
updates from a BGP neighbor.
Use the delete form of this command to disable inbound distribute list filtering.
Use the show form of this command to view BGP neighbor distribute list
configuration settings.
NOTE A neighbor distribute list cannot be used together with a neighbor prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to the specified direction.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 284
protocols bgp <asn> neighbor <id> ebgp‐multihop <ttl>
Allows eBGP neighbors not on directly connected networks.
Syntax
set protocols bgp asn neighbor id ebgp-multihop ttl
delete protocols bgp asn neighbor id ebgp-multihop
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
ebgp‐multihop ttl
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
ttl
Mandatory. The time-to-live, or maximum number of hops
allowed. The range is 1 to 255.
Default
Only directly connected neighbors are allowed.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 285
Usage Guidelines
Use this command to configure eBGP neighbors that are not on directly connected
networks.
For eBGP peers, there are three possible configurations:
1
By default, outgoing TTL is set to 1 and no checking is done on TTL of incoming
packets.
2
If ebgp-multihop is configured, the TTL for outgoing packets is set to that value
and no checking is done on TTL of incoming packets.
3
If ttl-security hops is configured, the TTL for outgoing packets is set to 255 and
the TTL of incoming packets is compared against the value set for ttl-security
hops.
Note that ttl-security hops can not be configured at the same time as ebgp-multihop.
Packets will always be dropped when TTL reaches zero.
Use the set form of this command to allow connections to eBGP peers residing on
networks that are not directly connected.
Use the delete form of this command to restrict connections to directly connected
peers.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 286
protocols bgp <asn> neighbor <id> filter‐list export <as‐path‐list‐name>
Applies an AS path list to routing updates to this neighbor.
Syntax
set protocols bgp asn neighbor id filter-list export as-path-list-name
delete protocols bgp asn neighbor id filter-list export as-path-list-name
show protocols bgp asn neighbor id filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
filter‐list {
export as‐path‐list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 287
Usage Guidelines
Use the set form of this command to apply an access list for filtering outbound
routing updates.
Use the delete form of this command to disable outbound routing update filtering.
Use the show form of this command to view BGP neighbor filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 288
protocols bgp <asn> neighbor <id> filter‐list import <as‐path‐list‐name>
Applies an AS path list to routing updates from this neighbor.
Syntax
set protocols bgp asn neighbor id filter-list import as-path-list-name
delete protocols bgp asn neighbor id filter-list import as-path-list-name
show protocols bgp asn neighbor id filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
filter‐list {
import as‐path‐list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 289
Usage Guidelines
Use the set form of this command to apply an access list for filtering inbound routing
updates.
Use the delete form of this command to disable inbound routing update filtering.
Use the show form of this command to view BGP neighbor filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 290
protocols bgp <asn> neighbor <id> local‐as <asn>
Defines a local autonomous system number for eBGP peerings.
Syntax
set protocols bgp asn neighbor id local-as asn [no-prepend]
delete protocols bgp asn neighbor id local-as asn [no-prepend]
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
local‐as asn {
no‐prepend
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
asn
Optional. Valid autonomous system number. This may not be
the number of the autonomous system to which the neighbor
belongs. The range is 1 to 4294967294.
no-prepend
Optional. Directs the router to not prepend the local
autonomous system number to routes received from an external
peer.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 291
Default
None.
Usage Guidelines
Use the set form of this command to set a local autonomous system number for eBGP
peer groupings. This number is used by all peers in the group for peering. It cannot
be applied to individual peers in the group.
A local autonomous system number can only be applied to a true eBGP peer; it
cannot be applied to peers in different subautonomous systems within a
confederation.
The no-prepend keyword can cause routing loops and should be used with care. It
should be used only to change the autonomous system number in a BGP network.
After the network transition has completed, this setting should be deleted.
Use the delete form of this command to remove a local autonomous system number,
or to remove the no-prepend keyword.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 292
protocols bgp <asn> neighbor <id> maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this neighbor before that
neighbor is taken down.
Syntax
set protocols bgp asn neighbor id maximum-prefix max-num
delete protocols bgp asn neighbor id maximum-prefix max-num
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
maximum‐prefix max‐num
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
max-num
Mandatory. The maximum number of prefixes to accept from
this neighbor before the neighbor is taken down.
Default
No maximum to the number of prefixes accepted.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 293
Usage Guidelines
Use the set form of this command to set the maximum number of prefixes to accept
from this neighbor before the neighbor is taken down. This helps alleviate situations
where the router receives more routes than it can handle.
Use the delete form of this command to remove the maximum prefix setting.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 294
protocols bgp <asn> neighbor <id> nexthop‐self
Sets the local router as the next hop for this neighbor.
Syntax
set protocols bgp asn neighbor id nexthop-self
delete protocols bgp asn neighbor id nexthop-self
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
nexthop‐self
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
Usage Guidelines
Use the set form of this command to set this router as the next hop for this neighbor.
This disables the next-hop calculation for this neighbor.
Use the delete form of this command to restore next-hop calculation for the neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 295
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 296
protocols bgp <asn> neighbor <id> override‐capability
Overrides capability negotiation to allow a peering session to be established with a
neighbor that does not support capability negotiation.
Syntax
set protocols bgp asn neighbor id override-capability
delete protocols bgp asn neighbor id override-capability
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
override‐capability
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
A session cannot be established if the neighbor does not support capability
negotiation.
Usage Guidelines
Use the set form of this command to enable a peering session to be established with
a BGP neighbor that does not support capability negotiation.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 297
Normally, if a BGP peer does not support capability negotiation, a peering session
cannot be established and the connection is terminated. Setting this value overrides
this process and allows the session to be established.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 298
protocols bgp <asn> neighbor <id> passive
Directs the router not to initiate connections with this neighbor.
Syntax
set protocols bgp asn neighbor id passive
delete protocols bgp asn neighbor id passive
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
passive
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
The router both accepts inbound connections and initiates outbound connections.
Usage Guidelines
Use the set form of this command to configure the local router such that accepts
inbound connections from the neighbor, but does not initiate outbound connections
by sending a BGP OPEN message.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 299
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 300
protocols bgp <asn> neighbor <id> password <pwd>
Defines a BGP MD5 password.
Syntax
set protocols bgp asn neighbor id password pwd
delete protocols bgp asn neighbor id password pwd
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
password pwd
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
pwd
Mandatory. A password to be used to generate an MD5 digest.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 301
Usage Guidelines
Use this command to specify a password-like string for generating an MD5
authentication string. This string is used for verification by the BGP neighbor. If
theMD5 digest generated by the neighbor does not match the MD5 digest generated
by the local router, any communication is silently discarded by the neighbor.
Use the set form of this command to specify or modify the BGP MD5 password.
Use the delete form of this command to remove the BGP MD5 password.
Use the show form of this command to viewBGP MD5 password configuration.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 302
protocols bgp <asn> neighbor <id> peer‐group <group‐name>
Assigns a neighbor as a member of the specified peer group.
Syntax
set protocols bgp asn neighbor id peer-group group-name
delete protocols bgp asn neighbor id peer-group group-name
show protocols bgp asn neighbor id peer-group
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
peer‐group group‐name
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
group-name
Mandatory. A string identifying a BGP peer group.
Default
By default, peer group members inherit all configured peer group settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 303
Usage Guidelines
Use the set form of this command to assign this BGP neighbor to a peer-group.
Use the delete form of this command to remove a neighbor from a peer group.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 304
protocols bgp <asn> neighbor <id> port <port‐num>
Specifies the port on which the neighbor is listening for BGP signals.
Syntax
set protocols bgp asn neighbor id port port-num
delete protocols bgp asn neighbor id port
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
port port‐num }
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
port-num
Mandatory. The port on which the BGP neighbor will be
listening for BGP messages. The range is 1 to 65535. The default
is 179.
Default
By default, the router uses the well-known port for BGP, which is 179.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 305
Usage Guidelines
Use the set form of this command to specify the port number to which BGP signals
will be sent.
Use the delete form of this command to restore the port to the default.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 306
protocols bgp <asn> neighbor <id> prefix‐list export <list‐name>
Applies a prefix list to filter updates to this neighbor.
Syntax
set protocols bgp asn neighbor id prefix-list export list-name
delete protocols bgp asn neighbor id prefix-list export list-name
show protocols bgp asn neighbor id prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
prefix‐list {
export list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
list-name
Mandatory. Name of a configured prefix list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 307
Usage Guidelines
Use the set form of this command to restrict distribution of outbound BGP neighbor
information by filtering with a prefix list.
Use the delete form of this command to remove an outbound prefix list filter.
Use the show form of this command to view BGP neighbor prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 308
protocols bgp <asn> neighbor <id> prefix‐list import <list‐name>
Applies a prefix list to filter updates from this neighbor.
Syntax
set protocols bgp asn neighbor id prefix-list import list-name
delete protocols bgp asn neighbor id prefix-list import list-name
show protocols bgp asn neighbor id prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
prefix‐list {
import list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
list-name
Mandatory. Name of a configured prefix list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 309
Usage Guidelines
Use the set form of this command to restrict distribution of inbound BGP neighbor
information by filtering with a prefix list.
Use the delete form of this command to remove an inbound prefix list filter.
Use the show form of this command to view BGP neighbor prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 310
protocols bgp <asn> neighbor <id> remote‐as <asn>
Specifies the autonomous system number of the neighbor.
Syntax
set protocols bgp asn neighbor id remote-as asn
delete protocols bgp asn neighbor id remote-as
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
remote‐as asn
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use the set form of this command to specify the autonomous system (AS) number of
a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 311
If the AS number of the neighbor is the same as that of the local router, the neighbor
is an internal BGP (iBGP) peer. If it is different the neighbor is an external BGP
(eBGP) peer.
Use the delete form of this command to remove AS number settings for the neighbor.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 312
protocols bgp <asn> neighbor <id> remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this neighbor.
Syntax
set protocols bgp asn neighbor id remove-private-as
delete protocols bgp asn neighbor id remove-private-as
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
remove‐private‐as
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Private AS numbers are included in outgoing updates.
Usage Guidelines
Use the set form of this command to direct the router to exclude private autonomous
system (AS) numbers from updates to eBGP peers. When this feature is enabled, the
router omits private AS numbers from the AS_PATH attribute. The range of private
AS numbers is 64512 to 65534.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 313
Note that it is a configuration error to include both private and public AS numbers
in an AS path. If the router detects this error, it does not remove private AS numbers.
This command may be used in confederations provided that the private AS numbers
are appended after the confederation portion of the AS path.
This command applies only to eBGP peers; it cannot be used with iBGP peers.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 314
protocols bgp <asn> neighbor <id> route‐map export <map‐name>
Applies a route map to filter updates to this neighbor.
Syntax
set protocols bgp asn neighbor id route-map export map-name
delete protocols bgp asn neighbor id route-map export map-name
show protocols bgp asn neighbor id route-map export map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
route‐map {
export map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. Name of a configured route map.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 315
Usage Guidelines
Use the set form of this command to restrict distribution of outbound BGP neighbor
information by filtering with a route map.
Use the delete form of this command to remove an outbound route map filter.
Use the show form of this command to view BGP neighbor route map configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 316
protocols bgp <asn> neighbor <id> route‐map import <map‐name>
Applies a route map to filter updates to or from this neighbor.
Syntax
set protocols bgp asn neighbor id route-map import map-name
delete protocols bgp asn neighbor id route-map import map-name
show protocols bgp asn neighbor id route-map import map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
route‐map {
import map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. Name of a configured route map.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 317
Usage Guidelines
Use the set form of this command to restrict routing updates received from this BGP
neighbor by filtering with a route map.
Use the delete form of this command to remove a route map filter.
Use the show form of this command to view BGP neighbor route map configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 318
protocols bgp <asn> neighbor <id> shutdown
Administratively shuts down a BGP neighbor.
Syntax
set protocols bgp asn neighbor id shutdown
delete protocols bgp asn neighbor id shutdown
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
shutdown
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
Usage Guidelines
Use the set form of this command to administratively shut down a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 319
Shutting down a BGP speaker administratively terminates any active sessions for the
neighbor and removes any associated routing information. If the neighbor is a peer
group, this could terminate a large number of sessions.
To determine whether a BGP neighbor has been administratively shut down, you can
view BGP summary information. A neighbor with a status of Idle with a comment of
Admin have been administratively shut down.
Use the delete form of this command to administratively reenable a BGP neighbor.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 320
protocols bgp <asn> neighbor <id> soft‐reconfiguration inbound
Directs the router to store received routing updates.
Syntax
set protocols bgp asn neighbor id soft-reconfiguration inbound
delete protocols bgp asn neighbor id soft-reconfiguration inbound
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
soft‐reconfiguration {
inbound
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 321
Usage Guidelines
Use the set form of this command to enable soft reconfiguration.
When this command is issued, the router begins storing routing updates, which can
be used subsequently for inbound soft reconfiguration. Outbound BGP soft
reconfiguration can be performed without enabling inbound soft reconfiguration.
Use the delete form of this command to disable soft reconfiguration.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 322
protocols bgp <asn> neighbor <id> strict‐capability‐match
Directs the router to strictly match the capabilities of the neighbor.
Syntax
set protocols bgp asn neighbor id strict-capability-match
delete protocols bgp asn neighbor id strict-capability-match
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
strict‐capability‐match
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 323
Usage Guidelines
Use the set form of this command to direct the router strictly compare the capabilities
of the local router and the remote peer. If the capabilities are different, the session is
terminated.
Use the delete form of this command to disable strict capability matching.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 324
protocols bgp <asn> neighbor <id> timers
Sets BGP timers for this neighbor.
Syntax
set protocols bgp asn neighbor id timers [connect seconds | keepalive seconds |
holdtime seconds]
delete protocols bgp asn neighbor id timers [connect | keepalive | holdtime]
show protocols bgp asn neighbor id timers
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
timers {
connect seconds
keepalive seconds
holdtime seconds
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 325
connect seconds
Optional. The amount of time, in seconds, that the
system waits for the transport protocol connection to
complete. If this timer expires, the state remains in
Connect state, the timer is reset, and the system tries to
initiate a new transport connection. The range is 0 to
65535.The default is 120.
During the connect period, the remote BGP peer can
establish a connection to the local system.
keepalive seconds
Optional. The frequency, in seconds, with which the
local router sends keep-alive messages to this neighbor.
The range is 1 to 65535. The default is 60.
holdtime seconds
Optional. The maximum interval, in seconds, after
which if the local router has not received a keep-alive
message from this neighbor, the neighbor is declared
dead. The range is 0 and 4 to 65535, where 0 disables
the holdtime timer. The default is 180.
Default
The default for the connect timer is 120. The default for the keep-alive timer is 60
seconds. The default for the holdtime timer is 180 seconds.
Usage Guidelines
Use the set form of this command to set timers for monitoring the health of the
remote peer.
•
If this command is issued and values are specified, the values configured here
override global timers set for the local router.
•
If this command is issued but values are not specified, the defaults for this
command apply.
•
If this command is not issued, or if the configuration statement is deleted, timers
set globally for the router using protocols bgp <asn> timers command apply to
this neighbor.
Use the delete form of this command to remove explicitly configured timers for a
neighbor. In this case, timers set globally for the router apply to this neighbor.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 326
protocols bgp <asn> neighbor <id> ttl‐security hops <hops>
Sets Time to Live (TTL) security hop count.
Syntax
set protocols bgp asn neighbor id ttl-security hops hops
delete protocols bgp asn neighbor id ttl-security hops
show protocols bgp asn neighbor id ttl-security hops
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
ttl‐security {
hops hops
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
hops
Optional. The maximum number of hops away from the
local peer a peering session connection will be accepted.
The range is 1 to 254.
Default
The default for the hop count is 1 for eBGP connections.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 327
Usage Guidelines
Use this command to set the Time to Live (TTL) security for the local peer.
This option provides an additional level of security for eBGP peering sessions. It
helps prevent BGP hijacking attempts by determining whether or not the BGP peer
is on a directly connected network using the BGP packet TTL value.
For eBGP peers, there are three possible configurations:
1
By default, outgoing TTL is set to 1 and no checking is done on TTL of incoming
packets.
2
If ebgp-multihop is configured, the TTL for outgoing packets is set to that value
and no checking is done on TTL of incoming packets.
3
If ttl-security hops is configured, the TTL for outgoing packets is set to 255 and
the TTL of incoming packets is compared against the value set for ttl-security
hops.
Note that ttl-security hops can not be configured at the same time as ebgp-multihop.
Packets will always be dropped when TTL reaches zero.
Use the set form of this command to specify the hop count.
Use the delete form of this command to return the system to its default.
Use the show form of this command to view the parameter configuration.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 328
protocols bgp <asn> neighbor <id> unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses,
based on a route map.
Syntax
set protocols bgp asn neighbor id unsuppress-map map-name
delete protocols bgp asn neighbor id unsuppress-map map-name
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
unsuppress‐map map‐name
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
map-name
Mandatory. The name of a configured route map.
Default
Routes suppressed by address aggregation are not advertised.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 329
Usage Guidelines
Use the set form of this command to selectively advertise routes suppressed by
aggregating addresses.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 330
protocols bgp <asn> neighbor <id> update‐source <source>
Specifies the source IP address or interface for routing updates.
Syntax
set protocols bgp asn neighbor id update-source source
delete protocols bgp asn neighbor id update-source
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
update‐source source
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
source
Mandatory. The IPv4 address of the router to receive routing
updates from or the interface to receive routing updates from..
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 331
Usage Guidelines
Use the set form of this command to direct the system to use a specific source for
routing updates.
Use the delete form of this command to remove the routing update source.
Use the show form of this command to view the configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 332
protocols bgp <asn> neighbor <id> weight <weight>
Defines a default weight for routes from this neighbor.
Syntax
set protocols bgp asn neighbor id weight weight
delete protocols bgp asn neighbor id weight
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
weight weight
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
weight
Mandatory. The weight to be assigned to routes from this
neighbor. The range is 0 to 65535.
Default
Routes learned from a BGP neighbor have a weight of 0. Routes sourced by the local
router have a weight of 32768.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 333
Usage Guidelines
Use the set form of this command to set the default weights for routes learned from
a BGP neighbor.
Use the delete form of this command to restore route weighting to the default.
Existing route weights are not changed.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 334
reset ip bgp external
Resets peering sessions for eBGP neighbors.
Syntax
reset ip bgp external [in [prefix-filter] | out | soft [in | out]]
Command Mode
Operational mode.
Parameters
in
Optional. Resets inbound sessions only.
out
Optional. Resets outbound sessions only.
prefix-filter
Optional. Resets the BGP outbound route filter (ORF). The
prefix-filter keyword is ignored unless ORF capabilities have
been enabled on the local system or received from the sending
BGP peer. In this case, a normal inbound soft reset is performed.
soft
Optional. Sessions are not reset. Resend updates that have
changed due to an export policy change or recalculate any
updates received based on import policy changes.
in
Optional. Re-read import policies and recalculates information
in the BGP table based on import policy changes. This requires
soft-reconfiguration inbound to be configured on the neighbor.
out
Optional. Re-read export policies and resend updates that have
changed due to an export policy change.
Default
When used without the soft option, reset connections are dropped, both inbound and
outbound.
Usage Guidelines
Use this command on a router running BGP to reset sessions for external BGP (eBGP)
neighbors. This forces BGP updates to be generated and new BGP policies to be
applied.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 335
Unless the soft option is used, all connections are dropped (a “hard reset”): TCP
connections are terminated and all routes received from the neighbor are removed
from the BGP routing table. Then the connection with the neighbor is reestablished.
If the soft option is used, sessions are not reset. Changes to export policies are resent
to peers. Changes to import policies causes recalculation of information in the BGP
table (given that soft-reconfiguration inbound is configured on the peer).
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 336
reset ip bgp external ipv4 unicast
Resets IPv4 unicast peering sessions for eBGP neighbors.
Syntax
reset ip bgp external ipv4 unicast [in [prefix-filter] | out | soft [in | out]
Command Mode
Operational mode.
Parameters
in
Optional. Resets inbound sessions only.
prefix-filter
Optional. Reset the BGP outbound route filter (ORF). The
prefix-filter keyword is ignored unless ORF capabilities have
been enabled on the local system or received from the sending
BGP peer. In this case, a normal inbound soft reset is performed.
out
Optional. Resets outbound sessions only.
soft
Optional. Sessions are not reset. Resend updates that have
changed due to an export policy change or recalculate any
updates received based on import policy changes.
in
Optional. Re-read import policies and recalculates information
in the BGP table based on import policy changes. This requires
soft-reconfiguration inbound to be configured on the neighbor.
out
Optional. Re-read export policies and resend updates that have
changed due to an export policy change.
Default
When used without the soft option, reset connections are dropped, both inbound and
outbound.
Usage Guidelines
Use this command to reset IPv4 unicast peering sessions for eBGP neighbors. This
forces BGP updates to be generated and new BGP policies to be applied.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 337
Unless the soft option is used, all connections are dropped (a “hard reset”): TCP
connections are terminated and all routes received from the neighbor are removed
from the BGP routing table. Then the connection with the neighbor is reestablished.
If the soft option is used, sessions are not reset. Changes to export policies are resent
to peers. Changes to import policies causes recalculation of information in the BGP
table (given that soft-reconfiguration inbound is configured on the peer).
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 338
show ip bgp ipv4 unicast neighbors Displays IPv4 unicast route information for BGP neighbors.
Syntax
show ip bgp ipv4 unicast neighbors [ipv4|ipv6]
Command Mode
Operational mode.
Parameters
ipv4
Displays detailed IPv4 unicast route information for the
specified IPv4 BGP neighbor.
ipv6
Displays detailed IPv4 unicast route information for the
specified IPv6 BGP neighbor.
Default
IPv4 unicast route information is shown for all BGP neighbors.
Usage Guidelines
Use this command to display IPv4 unicast route information for BGP neighbors.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 339
show ip bgp ipv4 unicast neighbors <id> advertised‐routes
Displays advertised BGP IPv4 unicast routes for a BGP neighbor.
Syntax
show ip bgp ipv4 unicast neighbors id advertised-routes
Command Mode
Operational mode.
Parameters
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display advertised BGP IPv4 unicast routes for a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 340
show ip bgp ipv4 unicast neighbors <id> prefix‐counts
Displays IPv4 unicast prefix-counts for a BGP neighbor.
Syntax
show ip bgp ipv4 unicast neighbors id prefix-counts
Command Mode
Operational mode.
Parameters
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display IPv4 unicast prefix counts for a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 341
show ip bgp ipv4 unicast neighbors <id> received prefix‐filter
Displays the IPv4 unicast prefix-lists received from a BGP neighbor.
Syntax
show ip bgp ipv4 unicast neighbors id } received prefix-filter
Command Mode
Operational mode.
Parameters
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display BGP IPv4 unicast prefix-lists received from a BGP
neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 342
show ip bgp ipv4 unicast neighbors <id> received‐routes
Displays the IPv4 unicast routes received from a BGP neighbor.
Syntax
show ip bgp ipv4 unicast neighbors id received-routes
Command Mode
Operational mode.
Parameters
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display IPv4 unicast routes (both accepted and rejected)
received from a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 343
show ip bgp ipv4 unicast neighbors <id> routes
Displays IPv4 unicast received and accepted routes from a BGP neighbor.
Syntax
show ip bgp ipv4 unicast neighbors id routes
Command Mode
Operational mode.
Parameters
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display IPv4 unicast received and accepted routes from a
BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 344
show ip bgp neighbors Displays BGP neighbor information.
Syntax
show ip bgp neighbors [ipv4|ipv6]
Command Mode
Operational mode.
Parameters
ipv4
Displays detailed information for the specified IPv4 BGP
neighbor.
ipv6
Displays detailed information for the specified IPv6 BGP
neighbor.
Default
Information for all neighbors is displayed.
Usage Guidelines
Use this command to display BGP neighbor information.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 345
show ip bgp neighbors <id> advertised‐routes
Displays advertised routes for a BGP neighbor.
Syntax
show ip bgp neighbors id advertised-routes
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display advertised routes for a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 346
show ip bgp neighbors <id> dampened‐routes
Displays dampened routes to a BGP neighbor.
Syntax
show ip bgp neighbors id dampened-routes
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display routes that have been dampened (suppressed) to a BGP
neighbor due to route flapping.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 347
show ip bgp neighbors <id> flap‐statistics
Displays route flap statistics for routes learned from a BGP neighbor.
Syntax
show ip bgp neighbors id flap-statistics
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display route flap statistics for routes learned from a BGP
neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 348
show ip bgp neighbors <id> prefix‐counts
Displays prefix counts for a BGP neighbor.
Syntax
show ip bgp neighbors id prefix-counts
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display prefix counts for a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 349
show ip bgp neighbors <id> received prefix‐filter
Displays prefix lists received from a BGP neighbor.
Syntax
show ip bgp neighbors id received prefix-filter
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display prefix lists received from a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 350
show ip bgp neighbors <id> received‐routes
Displays routes received from a BGP neighbor.
Syntax
show ip bgp neighbors id received-routes
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display routes (both accepted and rejected) received from a
BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 351
show ip bgp neighbors <id> routes
Displays all received and accepted routes from a BGP neighbor.
Syntax
show ip bgp neighbors id routes
Command Mode
Operational mode.
Parameters
id
The IPv4 or IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display received and accepted routes from a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 352
show ipv6 bgp neighbors Displays BGP neighbor information.
Syntax
show ipv6 bgp neighbors [ipv6]
Command Mode
Operational mode.
Parameters
ipv6
Optional. The IPv6 address of a BGP neighbor.
Default
Information is shown for all BGP neighbors.
Usage Guidelines
Use this command to display BGP neighbor information.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 353
show ipv6 bgp neighbors <ipv6> advertised‐routes
Displays advertised routes for a BGP neighbor.
Syntax
show ipv6 bgp neighbors ipv6 advertised-routes
Command Mode
Operational mode.
Parameters
ipv6
Mandatory. The IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display advertised routes for a BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 354
show ipv6 bgp neighbors <ipv6> received‐routes
Displays routes received from a BGP neighbor.
Syntax
show ipv6 bgp neighbors ipv6 received-routes
Command Mode
Operational mode.
Parameters
ipv6
Mandatory. The IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display routes (both accepted and rejected) received from a
BGP neighbor.
BGP
R6.4 v01
Vyatta
Chapter 5: Neighbors Neighbor Commands 355
show ipv6 bgp neighbors <ipv6> routes
Displays all received and accepted routes from a BGP neighbor.
Syntax
show ipv6 bgp neighbors ipv6 routes
Command Mode
Operational mode.
Parameters
ipv6
Mandatory. The IPv6 address of a BGP neighbor.
Default
None.
Usage Guidelines
Use this command to display received and accepted routes from a BGP neighbor.
BGP
R6.4 v01
Vyatta
356
Chapter 6: Peer Groups
This chapter describes commands for BGP peer groups.
This chapter presents the following topics:
•
BGP
Peer Group Commands
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 357
Peer Group Commands
This chapter contains the following commands.
Configuration Commands
protocols bgp <asn> peer‐group <group‐name>
Defines a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local router.
protocols bgp <asn> peer‐group <group‐name> attribute‐unchanged
Allows the router to send updates to a peer group with unchanged attributes.
protocols bgp <asn> peer‐group <group‐name> capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received from this peer group.
protocols bgp <asn> peer‐group <group‐name> capability orf
Enables or disables forwarding of the default route to a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> default‐originate
Provides a brief description for a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> description <desc>
Provides a brief description for a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> disable‐capability‐negotiation
Disables BGP capability negotiation.
protocols bgp <asn> peer‐group <group‐name> disable‐connected‐check
Disables direct connection verification for single‐hop eBGP peers.
protocols bgp <asn> peer‐group <group‐name> disable‐send‐community
Disables sending of community attributes to the specified peer group.
protocols bgp <asn> peer‐group <group‐name> distribute‐list export <acl‐num>
Applies an access list to filter outbound routing updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> distribute‐list import <acl‐num>
Applies an access list to filter inbound routing updates from this peer group.
protocols bgp <asn> peer‐group <group‐name> ebgp‐multihop <ttl>
Allows eBGP neighbors not on directly connected networks.
protocols bgp <asn> peer‐group <group‐name> filter‐list Applies an AS path list to routing updates to this peer export <as‐path‐list‐name>
group.
protocols bgp <asn> peer‐group <group‐name> filter‐list Applies an AS path list to routing updates from this peer import <as‐path‐list‐name>
group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 358
protocols bgp <asn> peer‐group <group‐name> local‐as Defines a local autonomous system number for eBGP <asn>
peerings.
protocols bgp <asn> peer‐group <group‐name> maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this peer group before that peer group is taken down.
protocols bgp <asn> peer‐group <group‐name> nexthop‐self
Sets the local router as the next hop for this peer group.
protocols bgp <asn> peer‐group <group‐name> override‐capability
Overrides capability negotiation to allow a peering session to be established with a peer group that does not support capability negotiation.
protocols bgp <asn> peer‐group <group‐name> passive
Directs the router not to initiate connections with this peer group.
protocols bgp <asn> peer‐group <group‐name> password <pwd>
Defines a BGP MD5 password.
protocols bgp <asn> peer‐group <group‐name> prefix‐list export <list‐name>
Applies a prefix list to filter updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> prefix‐list import <list‐name>
Applies a prefix list to filter updates from this peer group.
protocols bgp <asn> peer‐group <group‐name> remote‐as <asn>
Specifies the autonomous system number of the peer group.
protocols bgp <asn> peer‐group <group‐name> remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this peer group.
protocols bgp <asn> peer‐group <group‐name> route‐map export <map‐name>
Applies a route map to filter updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> route‐map import <map‐name>
Applies a route map to filter updates to or from this peer group.
protocols bgp <asn> peer‐group <group‐name> shutdown
Administratively shuts down a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> soft‐reconfiguration inbound
Directs the router to store received routing updates.
protocols bgp <asn> peer‐group <group‐name> ttl‐security hops <hops>
Sets Time to Live (TTL) security hop count for this peer group.
protocols bgp <asn> peer‐group <group‐name> unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses, based on a route map.
protocols bgp <asn> peer‐group <group‐name> update‐source <source>
Specifies the source IP address or interface for routing updates.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 359
protocols bgp <asn> peer‐group <group‐name> weight <weight>
Defines a default weight for routes from this peer group.
Peer Group Commands ‐ IPv6 Routes
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast
Defines parameters for controlling IPv6 unicast routes for a peering session.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local router.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast attribute‐unchanged
Allows the router to send updates to a peer group with unchanged attributes.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP capabilities advertised and received from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast default‐originate
Enables or disables forwarding of the default route to a BGP peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast disable‐send‐community
Disables sending of community attributes to the specified peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name>
Applies an access list to filter outbound routing updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name>
Applies an access list to filter inbound routing updates from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name>
Applies an AS path list to routing updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name>
Applies an AS path list to routing updates from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this peer group before that peer group is taken down.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐local unchanged
Specifies that the IPv6 link‐local address is not changed when the prefix is announced to the peer.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐self
Sets the local router as the next hop for this peer group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 360
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name>
Applies a prefix list to filter updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name>
Applies a prefix list to filter updates from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map export <map‐name>
Applies a route map to filter updates to this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map import <map‐name>
Applies a route map to filter updates to or from this peer group.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast soft‐reconfiguration inbound
Directs the router to store received routing updates.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses, based on a route map.
Operational Commands
reset ip bgp peer‐group <group‐name>
Resets sessions for all members of a peer group.
reset ip bgp peer‐group <group‐name> ipv4 unicast
Resets IPv4 unicast sessions for all members of a peer group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 361
protocols bgp <asn> peer‐group <group‐name>
Defines a BGP peer group.
Syntax
set protocols bgp asn peer-group group-name
delete protocols bgp asn peer-group group-name
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. Multi-node. The peer group name.
Default
None.
Usage Guidelines
Configuring a peer group simplifies configuration for neighbors with similar update
policies. Once a peer group is created, it can be configured using the same commands
for configuring individual BGP neighbors. Each member of the peer group inherits
the peer group’s update policies unless overridden by explicit configuration of the
individual peer. This also makes update calculation more efficient.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 362
All members of a peer group must share identical outbound routing policies—that is,
they must have identified distribute lists, filter lists, prefix lists, and route maps
applied. They need not have identical settings for default-originate, as this is always
processed on a per-peer basis. Inbound update routing policies may vary per peer
group member.
Use the set form of this command to define a BGP peer group.
Use the delete form of this command to remove a BGP peer group.
Use the show form of this command to view BGP peer group origination settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 363
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast Defines parameters for controlling IPv6 unicast routes for a peering session.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {}
}
}
}
Parameters
asn
Mandatory. The number of the AS in which this router resides.
group-name
Mandatory. The peer group name.
Usage Guidelines
Use this command to define parameters for IPv6 unicast routes for a peering session.
Use the set form of this command to specify the configuration node.
Use the delete form of this command to delete the ipv6-unicast configuration.
Use the show form of this command to view the ipv6-unicast configuration.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 364
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local
router.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast allowas-in
[number num]
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
allowas-in
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
allowas‐in {
number num
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 365
number num Optional. Specifies the number of times to accept an AS path
containing the readvertisement of the local router’s ASN. The
range is 1 to 10. The default is 3.
Default
Readvertisement is disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to allow the router to accept BGP AS paths
advertising the router’s own AS number.
This situation could indicate a routing loop, and by default such an update is
dropped. However, you can use this command to direct the router to accept updates
readvertising its AS number for a specified number of times.
Use the delete form of this command to disallow readvertisement of the router’s AS
path.
Use the show form of this command to view configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 366
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast attribute‐unchanged
Allows the router to send updates to a peer group with unchanged attributes.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
attribute-unchanged [as-path | med | next-hop]
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
attribute-unchanged [as-path | med | next-hop]
show protocols bgp asn peer-group group-name address-family ipv6-unicast
attribute-unchanged
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
attribute‐unchanged {
as‐path
med
next‐hop
}
}
}
}
}
}
Parameters
asn
BGP
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 367
group-name
Mandatory. The peer group name.
as-path
Optional. Propagates the route update with unchanged
AS_PATH attribute.
med
Optional. Propagates the route update with unchanged
Multi Exit Discriminator.
next-hop
Optional. Propagates the route update with unchanged
next hop.
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to propagate routing updates
without modifying the BGP AS_PATH, Multi Exit Discriminator (MED), or
next-hop attribute.
Use the delete form of this command to restore normal modification of BGP
attributes.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 368
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received
from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast capability
dynamic
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
capability dynamic
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
capability {
dynamic
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 369
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
In general, BGP requires that if a BGP speaker receives an OPEN message with any
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of the BGP Dynamic Capability feature, which allows
dynamic update of capabilities over an established BGP session.
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify dynamic update of BGP capabilities to
be used in capability negotiation.
Use the delete form of this command to remove the dynamic update capability.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 370
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP
capabilities advertised and received from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast capability
orf [prefix-list [receive | send]]
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
capability orf
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
capability {
orf {
prefix‐list {
receive
send
}
}
}
}
}
}
}
}
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 371
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
prefix-list
Optional. Advertise prefix-list ORF capability to this peer
group.
receive
Optional. Advertise the ability to receive the ORF from this peer
group.
send
Optional. Advertise the capability to send the ORF to this peer
group.
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
This command specifies use of BGP Outbound Route Filtering (ORF) to send and
receive capabilities. Using ORF minimizes the number of BGP updates that are sent
between peer routers.
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify BGP ORF capabilities to be used in
capability negotiation.
Use the delete form of this command to remove the ORF capability.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 372
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast default‐originate
Enables or disables forwarding of the default route to a BGP peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
default-originate [route-map map-name]
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
default-originate [route-map map-name]
show protocols bgp asn peer-group group-name address-family ipv6-unicast
default-originate
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
default‐originate {
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups map-name
Peer Group Commands 373
Optional. Specifies a configured route map to be used
when advertising the default route.
Default
The default route is not distributed.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to enable the router to advertise the default route
::/0 to this BGP peer group. This route can then be used by the peer group to reach
the local router if no other routes are available.
The route ::/0 need not be explicitly configured on the local router.
If a route map is specified, the default route is advertised if two conditions are
satisfied:
•
The route map includes a match ip address clause.
•
A route exists that exactly matches the IP access list.
Route maps are configured using protocols bgp <asn> peer-group <group-name>
local-as <asn> command.
Use the delete form of this command to disable forwarding of the default route or to
delete a route map.
Use the show form of this command to view BGP peer group default route
origination settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 374
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast disable‐send‐community
Disables sending of community attributes to the specified peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
disable-send-community [extended | standard]
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
disable-send-community
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
disable‐send‐community {
extended
standard
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
extended
Optional. Disable sending extended community attributes.
R6.4 v01
Vyatta
Chapter 6: Peer Groups standard
Peer Group Commands 375
Optional. Disable sending standard community attributes.
Default
Communities are sent by default.
Usage Guidelines
Use this command to enable and disable sending community attributes between BGP
neighbors.
This command applies to IPv6 unicast routes only.
Use the set form of this command to disable sending community attributes.
Use the delete form of this command to restore sending community attributes.
Use the show form of this command to view BGP peer group configuration settings
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 376
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list export <access‐list6‐name>
Applies an access list to filter outbound routing updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list export access-list6-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list export
show protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list export
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
distribute‐list {
export access‐list6‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 377
access-list6-name Optional. The name of the IPv6 access-list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list to filter outbound routing
updates to a BGP peer group.
Use the delete form of this command to disable outbound distribute list filtering.
Use the show form of this command to view BGP peer group distribute list
configuration settings.
NOTE A peer group distribute list cannot be used together with a peer group prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to a given direction.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 378
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast distribute‐list import <access‐list6‐name>
Applies an access list to filter inbound routing updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list import access-list6-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list import
show protocols bgp asn peer-group group-name address-family ipv6-unicast
distribute-list import
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
distribute‐list {
import acess‐list6‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 379
access-list6-name Optional. The name of the IPv6 access-list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list to filter inbound routing
updates from a BGP peer group.
Use the delete form of this command to disable inbound distribute list filtering.
Use the show form of this command to view BGP peer group distribute list
configuration settings.
NOTE A peer group distribute list cannot be used together with a peer group prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to the specified direction.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 380
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list export <as‐path‐list‐name>
Applies an AS path list to routing updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast filter-list
export as-path-list-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
filter-list export as-path-list-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
filter‐list {
export as‐path‐list‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 381
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list for filtering outbound
routing updates.
Use the delete form of this command to disable outbound routing update filtering.
Use the show form of this command to view BGP peer group filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 382
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast filter‐list import <as‐path‐list‐name>
Applies an AS path list to routing updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast filter-list
import as-path-list-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
filter-list import as-path-list-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
filter‐list {
import as‐path‐list‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 383
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to apply an access list for filtering inbound routing
updates.
Use the delete form of this command to disable inbound routing update filtering.
Use the show form of this command to view BGP peer group filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 384
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this peer group before that peer
group is taken down.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
maximum-prefix max-num
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
maximum-prefix max-num
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
maximum‐prefix max‐num
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
max-num
Mandatory. The maximum number of prefixes to accept from
this peer group before the peer group is taken down.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 385
Default
No maximum to the number of prefixes accepted.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to set the maximum number of prefixes to accept
from this peer group before the peer group is taken down. This helps alleviate
situations where the router receives more routes than it can handle.
Use the delete form of this command to remove the maximum prefix setting.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 386
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐local unchanged
Specifies that the IPv6 link-local address is not changed when the prefix is announced
to the peer.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
nexthop-local unchanged
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
nexthop-local
show protocols bgp asn peer-group group-name address-family ipv6-unicast
nexthop-local
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
nexthop‐local {
unchanged
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 387
Default
The IPv6 link-local address is changed when the prefix is announced to the peer.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to specify that the IPv6 link-local address is not
changed when the prefix is announced to a peer.
Use the delete form of this command to return the system to its default behavior.
Use the show form of this command to view BGP peer group ipv6-unicast
nexthop-local configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 388
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast nexthop‐self
Sets the local router as the next hop for this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
nexthop-self
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
nexthop-self
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
nexthop‐self
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 389
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to set this router as the next hop for this peer
group. This disables the next-hop calculation for this peer group.
Use the delete form of this command to restore next-hop calculation for the peer
group.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 390
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list export <prefix‐list6‐name>
Applies a prefix list to filter updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast prefix-list
export prefix-list6-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
prefix-list export prefix-list6-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
prefix‐list {
export prefix‐list6‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 391
prefix-list6-name Mandatory. Name of a configured IPv6 prefix list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict distribution of outbound BGP peer
group information by filtering with a prefix list.
Use the delete form of this command to remove an outbound prefix list filter.
Use the show form of this command to view BGP peer group prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 392
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast prefix‐list import <prefix‐list6‐name>
Applies a prefix list to filter updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast prefix-list
import prefix-list6-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
prefix-list import prefix-list6-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
prefix‐list {
import prefix‐list6‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 393
prefix-list6-name Mandatory. Name of a configured IPv6 prefix list.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict distribution of inbound BGP peer group
information by filtering with a prefix list.
Use the delete form of this command to remove an inbound prefix list filter.
Use the show form of this command to view BGP peer group prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 394
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this peer
group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
remove-private-as
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
remove-private-as
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
remove‐private‐as
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 395
Default
Private AS numbers are included in outgoing updates.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to exclude private autonomous
system (AS) numbers from updates to eBGP peers. When this feature is enabled, the
router omits private AS numbers from the AS_PATH attribute. The range of private
AS numbers is 64512 to 65534.
Note that it is a configuration error to include both private and public AS numbers
in an AS path. If the router detects this error, it does not remove private AS numbers.
This command may be used in confederations provided that the private AS numbers
are appended after the confederation portion of the AS path.
This command applies only to eBGP peers; it cannot be used with iBGP peers.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 396
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map export <map‐name>
Applies a route map to filter updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast route-map
export map-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
route-map export map-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
route-map export map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
route‐map {
export map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups map-name
Peer Group Commands 397
Mandatory. Name of a configured route map.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict distribution of outbound BGP peer
group information by filtering with a route map.
Use the delete form of this command to remove an outbound route map filter.
Use the show form of this command to view BGP peer group route map
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 398
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐map import <map‐name>
Applies a route map to filter updates to or from this peer group.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast route-map
import map-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
route-map import map-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
route-map import map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
route‐map {
import map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups map-name
Peer Group Commands 399
Mandatory. Name of a configured route map.
Default
None.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to restrict routing updates received from this BGP
neighbor by filtering with a route map.
Use the delete form of this command to remove a route map filter.
Use the show form of this command to view BGP peer group route map
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 400
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast soft‐reconfiguration inbound
Directs the router to store received routing updates.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
soft-reconfiguration inbound
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
soft-reconfiguration inbound
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
soft‐reconfiguration {
inbound
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 401
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to enable soft reconfiguration.
When this command is issued, the router begins storing routing updates, which can
be used subsequently for inbound soft reconfiguration. Outbound BGP soft
reconfiguration can be performed without enabling inbound soft reconfiguration.
Use the delete form of this command to disable soft reconfiguration.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 402
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses,
based on a route map.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
unsuppress-map map-name
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
unsuppress-map map-name
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
unsuppress‐map map‐name
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
map-name
Mandatory. The name of a configured route map.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 403
Default
Routes suppressed by address aggregation are not advertised.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to selectively advertise routes suppressed by
aggregating addresses.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 404
protocols bgp <asn> peer‐group <group‐name> allowas‐in
Allows or disallows receiving BGP advertisements containing the AS path of the local
router.
Syntax
set protocols bgp asn peer-group group-name allowas-in [number num]
delete protocols bgp asn peer-group group-name allowas-in
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
allowas‐in {
number num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
number num Optional. Specifies the number of times to accept an AS path
containing the readvertisement of the local router’s ASN. The
range is 1 to 10. The default is 3.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 405
Default
Readvertisement is disabled.
Usage Guidelines
Use the set form of this command to allow the router to accept BGP AS paths
advertising the router’s own AS number.
This situation could indicate a routing loop, and by default such an update is
dropped. However, you can use this command to direct the router to accept updates
readvertising its AS number for a specified number of times.
Use the delete form of this command to disallow readvertisement of the router’s AS
path.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 406
protocols bgp <asn> peer‐group <group‐name> attribute‐unchanged
Allows the router to send updates to a peer group with unchanged attributes.
Syntax
set protocols bgp asn peer-group group-name attribute-unchanged [as-path | med |
next-hop]
delete protocols bgp asn peer-group group-name attribute-unchanged [as-path | med
| next-hop]
show protocols bgp asn peer-group group-name attribute-unchanged
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
attribute‐unchanged {
as‐path
med
next‐hop
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
group-name
Mandatory. The peer group name.
as-path
Optional. Propagates the route update with unchanged
AS_PATH attribute.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 407
med
Optional. Propagates the route update with unchanged
Multi Exit Discriminator.
next-hop
Optional. Propagates the route update with unchanged
next hop.
Default
Disabled.
Usage Guidelines
Use the set form of this command to direct the router to propagate routing updates
without modifying the BGP AS_PATH, Multi Exit Discriminator (MED), or
next-hop attribute.
Use the delete form of this command to restore normal modification of BGP
attributes.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 408
protocols bgp <asn> peer‐group <group‐name> capability dynamic
Advertises support for dynamic update of BGP capabilities advertised and received
from this peer group.
Syntax
set protocols bgp asn peer-group group-name capability dynamic
delete protocols bgp asn peer-group group-name capability dynamic
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
capability {
dynamic
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
By default, the session is brought up with minimal capability on both sides.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 409
Usage Guidelines
In general, BGP-4 requires that if a BGP speaker receives an OPEN message with an
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of the BGP Dynamic Capability feature, which allows
dynamic update of capabilities over an established BGP session.
Use the set form of this command to specify dynamic update of BGP capabilities to
be used in capability negotiation.
Use the delete form of this command to remove the dynamic update capability.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 410
protocols bgp <asn> peer‐group <group‐name> capability orf
Advertises support for Outbound Route Filtering (ORF) for updating BGP
capabilities advertised and received from this peer group.
Syntax
set protocols bgp asn peer-group group-name capability orf [prefix-list [receive |
send]]
delete protocols bgp asn peer-group group-name capability orf
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
capability {
orf {
prefix‐list {
receive
send
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 411
prefix-list
Optional. Advertise prefix-list ORF capability to this peer
group.
receive
Optional. Advertise the ability to receive the ORF from this peer
group.
send
Optional. Advertise the capability to send the ORF to this peer
group.
Default
By default, the session is brought up with minimal capability on both sides.
Usage Guidelines
In general, BGP-4 requires that if a BGP speaker receives an OPEN message with an
unrecognized optional parameters, the speaker must terminate BGP peering. This
makes it difficult to introduce new capabilities into the protocol. The Capabilities
parameter allows graceful negotiation of BGP capabilities without requiring a peer
to terminate peering.
This command specifies use of BGP Outbound Route Filtering (ORF) to send and
receive capabilities. Using ORF minimizes the number of BGP updates that are sent
between peer routers.
Use the set form of this command to specify BGP ORF capabilities to be used in
capability negotiation.
Use the delete form of this command to remove the ORF capability.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 412
protocols bgp <asn> peer‐group <group‐name> default‐originate
Enables or disables forwarding of the default route to a BGP peer group.
Syntax
set protocols bgp asn peer-group group-name default-originate [route-map
map-name]
delete protocols bgp asn peer-group group-name default-originate [route-map
map-name]
show protocols bgp asn peer-group group-name default-originate
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
default‐originate {
route‐map map‐name
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
group-name
Mandatory. The peer group name.
map-name
Optional. Specifies a configured route map to be used
when advertising the default route.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 413
Default
The default route is not distributed.
Usage Guidelines
Use the set form of this command to enable the router to advertise the default route
0.0.0.0 to this BGP peer group. This route can then be used by the peer group to
reach the local router if no other routes are available.
The route 0.0.0.0 need not be explicitly configured on the local router.
If a route map is specified, the default route is advertised if two conditions are
satisfied:
•
The route map includes a match ip address clause.
•
A route exists that exactly matches the IP access list.
Route maps are configured using protocols bgp <asn> peer-group <group-name>
local-as <asn> command.
Use the delete form of this command to disable forwarding of the default route or to
delete a route map.
Use the show form of this command to view BGP peer group default route
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 414
protocols bgp <asn> peer‐group <group‐name> description <desc>
Provides a brief description for a BGP peer group.
Syntax
set protocols bgp asn peer-group group-name description desc
delete protocols bgp asn peer-group group-name description
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
description desc
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
desc
Mandatory. A description of up to 80 characters for the peer
group. If spaces are included, the description must be enclosed
in quotes.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 415
Usage Guidelines
Use the set form of this command to enter a description for this BGP peer group.
Use the delete form of this command to delete the peer group’s description.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 416
protocols bgp <asn> peer‐group <group‐name> disable‐capability‐negotiation
Disables BGP capability negotiation.
Syntax
set protocols bgp asn peer-group group-name disable-capability-negotiation
delete protocols bgp asn peer-group group-name disable-capability-negotiation
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
disable‐capability‐negotiation
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Capability negotiation is performed.
Usage Guidelines
Use the set form of this command to disable BGP capability negotiation.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 417
Use the delete form of this command to delete this attribute and restore BGP
capability negotiation.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 418
protocols bgp <asn> peer‐group <group‐name> disable‐connected‐check
Disables direct connection verification for single-hop eBGP peers.
Syntax
set protocols bgp asn peer-group group-name disable-connected-check
delete protocols bgp asn peer-group group-name disable-connected-check
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
disable‐connected‐check }
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Connection verification is performed.
Usage Guidelines
Use the set form of this command to disable connection verification.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 419
Connection verification is used to establish an eBGP peering session with a
single-hop peer. A single-hop peer is defined using the peer group ebgp-multihop
command and specifying a time-to-live (TTL) value of 1. Such a peer is reachable by
a single hop, but is configured on a loopback interface or is otherwise configured
with a non–directly connected IP address.
For these peers, the BGP process normally checks to determine whether the eBGP
peer is directly connected to the same network as the local router. If not, the peering
session is not established.
If connection verification is disabled, source updating must be enabled using
protocols bgp <asn> peer-group <group-name> update-source <source> command
so that the BGP process can used the loopback interface for the peering session.
Use the delete form of this command to restore connection verification for eBGP
peering sessions.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 420
protocols bgp <asn> peer‐group <group‐name> disable‐send‐community
Disables sending of community attributes to the specified peer group.
Syntax
set protocols bgp asn peer-group group-name disable-send-community [extended |
standard]
delete protocols bgp asn peer-group group-name disable-send-community
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
disable‐send‐community {
extended
standard
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
extended
Optional. Disable sending extended community attributes.
standard
Optional. Disable sending standard community attributes.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 421
Default
Communities are sent by default.
Usage Guidelines
Use this command to enable and disable sending community attributes between BGP
peer groups.
Use the set form of this command to disable sending community attributes.
Use the delete form of this command to restore sending community attributes.
Use the show form of this command to view BGP peer group configuration settings
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 422
protocols bgp <asn> peer‐group <group‐name> distribute‐list export <acl‐num>
Applies an access list to filter outbound routing updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name distribute-list export acl-num
delete protocols bgp asn peer-group group-name distribute-list
show protocols bgp asn peer-group group-name distribute-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
distribute‐list {
export acl‐num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
acl-num
Optional. The number of a standard or extended access list. The
range for a standard access list is 1 to 99. The range for an
extended access list is 100 to 199.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 423
Usage Guidelines
Use the set form of this command to apply an access list to filter outbound routing
updates to a BGP peer group.
Use the delete form of this command to disable outbound distribute list filtering.
Use the show form of this command to view BGP peer group distribute list
configuration settings.
NOTE A peer group distribute list cannot be used together with a peer group prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to a given direction.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 424
protocols bgp <asn> peer‐group <group‐name> distribute‐list import <acl‐num>
Applies an access list to filter inbound routing updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name distribute-list import acl-num
delete protocols bgp asn peer-group group-name distribute-list
show protocols bgp asn peer-group group-name distribute-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
distribute‐list {
import acl‐num
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
acl-num
Optional. The number of a standard or extended access list. The
range for a standard access list is 1 to 99. The range for an
extended access list is 100 to 199.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 425
Usage Guidelines
Use the set form of this command to apply an access list to filter inbound routing
updates from a BGP peer group.
Use the delete form of this command to disable inbound distribute list filtering.
Use the show form of this command to view BGP peer group distribute list
configuration settings.
NOTE A peer group distribute list cannot be used together with a peer group prefix list in the same direction. These two lists are mutually exclusive, and only one list may be applied to the specified direction.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 426
protocols bgp <asn> peer‐group <group‐name> ebgp‐multihop <ttl>
Allows eBGP neighbors not on directly connected networks.
Syntax
set protocols bgp asn peer-group group-name ebgp-multihop ttl
delete protocols bgp asn peer-group group-name ebgp-multihop
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
ebgp‐multihop ttl
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
ttl
Mandatory. The time-to-live, or maximum number of hops
allowed. The range is 1 to 255.
Default
Only directly connected neighbors are allowed.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 427
Usage Guidelines
Use the set form of this command to allow connections to eBGP peers residing on
networks that are not directly connected.
Use the delete form of this command to restrict connections to directly connected
peers.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 428
protocols bgp <asn> peer‐group <group‐name> filter‐list export <as‐path‐list‐name>
Applies an AS path list to routing updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name filter-list export as-path-list-name
delete protocols bgp asn peer-group group-name filter-list export as-path-list-name
show protocols bgp asn peer-group group-name filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
filter‐list {
export as‐path‐list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 429
Usage Guidelines
Use the set form of this command to apply an access list for filtering outbound
routing updates.
Use the delete form of this command to disable outbound routing update filtering.
Use the show form of this command to view BGP peer group filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 430
protocols bgp <asn> peer‐group <group‐name> filter‐list import <as‐path‐list‐name>
Applies an AS path list to routing updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name filter-list import as-path-list-name
delete protocols bgp asn peer-group group-name filter-list import as-path-list-name
show protocols bgp asn peer-group group-name filter-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
filter‐list {
import as‐path‐list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
as-path-list-name Mandatory. Name of an autonomous system path list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 431
Usage Guidelines
Use the set form of this command to apply an access list for filtering inbound routing
updates.
Use the delete form of this command to disable inbound routing update filtering.
Use the show form of this command to view BGP peer group filter list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 432
protocols bgp <asn> peer‐group <group‐name> local‐as <asn>
Defines a local autonomous system number for eBGP peerings.
Syntax
set protocols bgp asn peer-group group-name local-as asn [no-prepend]
delete protocols bgp asn peer-group group-name local-as asn [no-prepend]
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
local‐as asn {
no‐prepend
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
asn
Optional. Valid autonomous system number. This may not be
the number of the autonomous system to which the peer group
belongs. The range is 1 to 4294967294.
no-prepend
Optional. Directs the router to not prepend the local
autonomous system number to routes received from an external
peer.
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 433
Default
None.
Usage Guidelines
Use the set form of this command to set a local autonomous system number for eBGP
peer groupings. This number is used by all peers in the group for peering. It cannot
be applied to individual peers in the group.
A local autonomous system number can only be applied to a true eBGP peer; it
cannot be applied to peers in different subautonomous systems within a
confederation.
The no-prepend keyword can cause routing loops and should be used with care. It
should be used only to change the autonomous system number in a BGP network.
After the network transition has completed, this setting should be deleted.
Use the delete form of this command to remove a local autonomous system number,
or to remove the no-prepend keyword.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 434
protocols bgp <asn> peer‐group <group‐name> maximum‐prefix <max‐num>
Sets the maximum number of prefixes to accept from this peer group before that peer
group is taken down.
Syntax
set protocols bgp asn peer-group group-name maximum-prefix max-num
delete protocols bgp asn peer-group group-name maximum-prefix max-num
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
maximum‐prefix max‐num
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
max-num
Mandatory. The maximum number of prefixes to accept from
this peer group before the peer group is taken down.
Default
No maximum to the number of prefixes accepted.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 435
Usage Guidelines
Use the set form of this command to set the maximum number of prefixes to accept
from this peer group before the peer group is taken down. This helps alleviate
situations where the router receives more routes than it can handle.
Use the delete form of this command to remove the maximum prefix setting.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 436
protocols bgp <asn> peer‐group <group‐name> nexthop‐self
Sets the local router as the next hop for this peer group.
Syntax
set protocols bgp asn peer-group group-name nexthop-self
delete protocols bgp asn peer-group group-name nexthop-self
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
nexthop‐self
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Disabled.
Usage Guidelines
Use the set form of this command to set this router as the next hop for this peer
group. This disables the next-hop calculation for this peer group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 437
Use the delete form of this command to restore next-hop calculation for the peer
group.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 438
protocols bgp <asn> peer‐group <group‐name> override‐capability
Overrides capability negotiation to allow a peering session to be established with a
peer group that does not support capability negotiation.
Syntax
set protocols bgp asn peer-group group-name override-capability
delete protocols bgp asn peer-group group-name override-capability
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
override‐capability
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
A session cannot be established if the peer group does not support capability
negotiation.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 439
Usage Guidelines
Use the set form of this command to enable a peering session to be established with
a BGP peer group that does not support capability negotiation.
Normally, if a BGP peer does not support capability negotiation, a peering session
cannot be established and the connection is terminated. Setting this value overrides
this process and allows the session to be established.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 440
protocols bgp <asn> peer‐group <group‐name> passive
Directs the router not to initiate connections with this peer group.
Syntax
set protocols bgp asn peer-group group-name passive
delete protocols bgp asn peer-group group-name passive
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
passive
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
The router both accepts inbound connections and initiates outbound connections.
Usage Guidelines
Use the set form of this command to configure the local router such that accepts
inbound connections from the peer group, but does not initiate outbound
connections by sending a BGP OPEN message.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 441
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 442
protocols bgp <asn> peer‐group <group‐name> password <pwd>
Defines a BGP MD5 password.
Syntax
set protocols bgp asn peer-group group-name password pwd
delete protocols bgp asn peer-group group-name password pwd
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
password pwd
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
pwd
Mandatory. A password to be used to generate an MD5 digest.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 443
Usage Guidelines
Use this command to specify a password-like string for generating an MD5
authentication string. This string is used for verification by the BGP peer group. If
theMD5 digest generated by the peer group does not match the MD5 digest
generated by the local router, any communication is silently discarded by the peer
group.
Use the set form of this command to specify or modify the BGP MD5 password.
Use the delete form of this command to remove the BGP MD5 password.
Use the show form of this command to viewBGP MD5 password configuration.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 444
protocols bgp <asn> peer‐group <group‐name> prefix‐list export <list‐name>
Applies a prefix list to filter updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name prefix-list export list-name
delete protocols bgp asn peer-group group-name prefix-list export list-name
show protocols bgp asn peer-group group-name prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
prefix‐list {
export list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
list-name
Mandatory. Name of a configured prefix list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 445
Usage Guidelines
Use the set form of this command to restrict distribution of outbound BGP peer
group information by filtering with a prefix list.
Use the delete form of this command to remove an outbound prefix list filter.
Use the show form of this command to view BGP peer group prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 446
protocols bgp <asn> peer‐group <group‐name> prefix‐list import <list‐name>
Applies a prefix list to filter updates from this peer group.
Syntax
set protocols bgp asn peer-group group-name prefix-list import list-name
delete protocols bgp asn peer-group group-name prefix-list import list-name
show protocols bgp asn peer-group group-name prefix-list
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
prefix‐list {
import list‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
list-name
Mandatory. Name of a configured prefix list.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 447
Usage Guidelines
Use the set form of this command to restrict distribution of inbound BGP peer group
information by filtering with a prefix list.
Use the delete form of this command to remove an inbound prefix list filter.
Use the show form of this command to view BGP peer group prefix list configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 448
protocols bgp <asn> peer‐group <group‐name> remote‐as <asn>
Specifies the autonomous system number of the peer group.
Syntax
set protocols bgp asn peer-group group-name remote-as asn
delete protocols bgp asn peer-group group-name remote-as
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
remote‐as asn
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
None.
Usage Guidelines
Use the set form of this command to specify the autonomous system (AS) number of
a BGP peer group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 449
If the AS number of the peer group is the same as that of the local router, the neighbor
is an internal BGP (iBGP) peer. If it is different the neighbor is an external BGP
(eBGP) peer.
Use the delete form of this command to remove AS number settings for the peer
group.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 450
protocols bgp <asn> peer‐group <group‐name> remove‐private‐as
Directs the router to remove private AS numbers from updates sent to this peer
group.
Syntax
set protocols bgp asn peer-group group-name remove-private-as
delete protocols bgp asn peer-group group-name remove-private-as
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
remove‐private‐as
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Private AS numbers are included in outgoing updates.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 451
Usage Guidelines
Use the set form of this command to direct the router to exclude private autonomous
system (AS) numbers from updates to eBGP peers. When this feature is enabled, the
router omits private AS numbers from the AS_PATH attribute. The range of private
AS numbers is 64512 to 65534.
Note that it is a configuration error to include both private and public AS numbers
in an AS path. If the router detects this error, it does not remove private AS numbers.
This command may be used in confederations provided that the private AS numbers
are appended after the confederation portion of the AS path.
This command applies only to eBGP peers; it cannot be used with iBGP peers.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 452
protocols bgp <asn> peer‐group <group‐name> route‐map export <map‐name>
Applies a route map to filter updates to this peer group.
Syntax
set protocols bgp asn peer-group group-name route-map export map-name
delete protocols bgp asn peer-group group-name route-map export map-name
show protocols bgp asn peer-group group-name route-map export map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
route‐map {
export map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
map-name
Mandatory. Name of a configured route map.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 453
Usage Guidelines
Use the set form of this command to restrict distribution of outbound BGP peer
group information by filtering with a route map.
Use the delete form of this command to remove an outbound route map filter.
Use the show form of this command to view BGP peer group route map
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 454
protocols bgp <asn> peer‐group <group‐name> route‐map import <map‐name>
Applies a route map to filter updates to or from this peer group.
Syntax
set protocols bgp asn peer-group group-name route-map import map-name
delete protocols bgp asn peer-group group-name route-map import map-name
show protocols bgp asn peer-group group-name route-map import map-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
route‐map {
import map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
map-name
Mandatory. Name of a configured route map.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 455
Usage Guidelines
Use the set form of this command to restrict routing updates received from this BGP
peer group by filtering with a route map.
Use the delete form of this command to remove a route map filter.
Use the show form of this command to view BGP peer group route map
configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 456
protocols bgp <asn> peer‐group <group‐name> shutdown
Administratively shuts down a BGP peer group.
Syntax
set protocols bgp asn peer-group group-name shutdown
delete protocols bgp asn peer-group group-name shutdown
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
shutdown
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Disabled.
Usage Guidelines
Use the set form of this command to administratively shut down a BGP peer group.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 457
Shutting down a BGP speaker administratively terminates any active sessions for the
peer group and removes any associated routing information. This could terminate a
large number of sessions.
To determine whether a BGP neighbor has been administratively shut down, you can
view BGP summary information. A neighbor with a status of Idle with a comment of
Admin have been administratively shut down.
Use the delete form of this command to administratively reenable a BGP peer group.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 458
protocols bgp <asn> peer‐group <group‐name> soft‐reconfiguration inbound
Directs the router to store received routing updates.
Syntax
set protocols bgp asn peer-group group-name soft-reconfiguration inbound
delete protocols bgp asn peer-group group-name soft-reconfiguration inbound
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
soft‐reconfiguration {
inbound
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 459
Usage Guidelines
Use the set form of this command to enable soft reconfiguration.
When this command is issued, the router begins storing routing updates, which can
be used subsequently for inbound soft reconfiguration. Outbound BGP soft
reconfiguration can be performed without enabling inbound soft reconfiguration.
Use the delete form of this command to disable soft reconfiguration.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 460
protocols bgp <asn> peer‐group <group‐name> ttl‐security hops <hops>
Sets Time to Live (TTL) security hop count for this peer group.
Syntax
set protocols bgp asn peer-group group-name ttl-security hops hops
delete protocols bgp asn peer-group group-name ttl-security hops
show protocols bgp asn peer-group group-name ttl-security hops
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
ttl‐security {
hops hops
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router
resides. The range of values is 1 to 4294967294. The
subrange 64512 to 65534 is reserved for private
autonomous systems.
group-name
Mandatory. The peer group name.
hops
Optional. The maximum number of hops away from the
local peer a peering session connection will be accepted.
The range is 1 to 254.
Default
The default for the hop count is 254 for IBGP and 1 for EBGP connections.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 461
Usage Guidelines
Use this command to set the Time to Live (TTL) security for the local peer group.
TTL security is incompatible with EBGP Multihops.
Use the set form of this command to specify the hop count.
Use the delete form of this command to return the system to its default.
Use the show form of this command to view the parameter configuration.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 462
protocols bgp <asn> peer‐group <group‐name> unsuppress‐map <map‐name>
Directs the router to selectively advertise routes suppressed by aggregating addresses,
based on a route map.
Syntax
set protocols bgp asn peer-group group-name unsuppress-map map-name
delete protocols bgp asn peer-group group-name unsuppress-map map-name
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
unsuppress‐map map‐name
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
map-name
Mandatory. The name of a configured route map.
Default
Routes suppressed by address aggregation are not advertised.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 463
Usage Guidelines
Use the set form of this command to selectively advertise routes suppressed by
aggregating addresses.
Use the delete form of this command to restore the default behavior.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 464
protocols bgp <asn> peer‐group <group‐name> update‐source <source>
Specifies the source IP address or interface for routing updates.
Syntax
set protocols bgp asn peer-group group-name update-source source
delete protocols bgp asn peer-group group-name update-source
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
update‐source source
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
source
Mandatory. The IPv4 address of the router to receive routing
updates from or the interface to receive routing updates from..
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 465
Usage Guidelines
Use the set form of this command to direct the system to use a specific source for
routing updates.
Use the delete form of this command to remove the routing update source.
Use the show form of this command to view the configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 466
protocols bgp <asn> peer‐group <group‐name> weight <weight>
Defines a default weight for routes from this peer group.
Syntax
set protocols bgp asn peer-group group-name weight weight
delete protocols bgp asn peer-group group-name weight
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
weight weight
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
weight
Mandatory. The weight to be assigned to routes from this peer
group. The range is 0 to 65535.
Default
Routes learned from a BGP neighbor have a weight of 0. Routes sourced by the local
router have a weight of 32768.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 467
Usage Guidelines
Use the set form of this command to set the default weights for routes learned from
a BGP peer group.
Use the delete form of this command to restore route weighting to the default.
Existing route weights are not changed.
Use the show form of this command to view BGP peer group configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 468
reset ip bgp peer‐group <group‐name>
Resets sessions for all members of a peer group.
Syntax
reset ip bgp peer-group group-name [in [prefix-filter] | out | soft [in | out]]
Command Mode
Operational mode.
Parameters
group-name
Mandatory. The name of a defined BGP peer group.
in
Optional. Resets inbound sessions only.
out
Optional. Resets outbound sessions only.
prefix-filter
Optional. Resets the BGP outbound route filter (ORF). This
keyword is ignored unless ORF capabilities have been enabled
on the local system or received from the sending BGP peer. In
this case, a normal inbound soft reset is performed.
soft
Optional. Sessions are not reset. Resend updates that have
changed due to an export policy change or recalculate any
updates received based on import policy changes.
in
Optional. Re-read import policies and recalculates information
in the BGP table based on import policy changes. This requires
soft-reconfiguration inbound to be configured on the neighbor.
out
Optional. Re-read export policies and resend updates that have
changed due to an export policy change.
Default
When used without the soft option, reset connections are dropped, both inbound and
outbound.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 469
Usage Guidelines
Use this command to reset sessions for all members of a peer group. This forces BGP
updates to be generated and new BGP policies to be applied.
Unless the soft option is used, all connections are dropped (a “hard reset”): TCP
connections are terminated and all routes received from the neighbor are removed
from the BGP routing table. Then the connection with the neighbor is reestablished.
If the soft option is used, routes from the neighbor are marked as stale but are not
immediately removed from the BGP table. Stale routes that are not received from the
neighbor when the connection is reestablished are removed from the BGP table at
that point.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 470
reset ip bgp peer‐group <group‐name> ipv4 unicast
Resets IPv4 unicast sessions for all members of a peer group.
Syntax
reset ip bgp peer-group group-name ipv4 unicast [in [prefix-filter] | out | soft [in |
out]]
Command Mode
Operational mode.
Parameters
group-name
Mandatory. The name of a defined BGP peer group.
in
Optional. Resets inbound sessions only.
out
Optional. Resets outbound sessions only.
prefix-filter
Optional. Resets the BGP outbound route filter (ORF). This
keyword is ignored unless ORF capabilities have been enabled
on the local system or received from the sending BGP peer. In
this case, a normal inbound soft reset is performed.
soft
Optional. Sessions are not reset. Resend updates that have
changed due to an export policy change or recalculate any
updates received based on import policy changes.
in
Optional. Re-read import policies and recalculates information
in the BGP table based on import policy changes. This requires
soft-reconfiguration inbound to be configured on the neighbor.
out
Optional. Re-read export policies and resend updates that have
changed due to an export policy change.
Default
None.
BGP
R6.4 v01
Vyatta
Chapter 6: Peer Groups Peer Group Commands 471
Usage Guidelines
Use this command to reset inbound unicast sessions for all members of a peer group.
This forces BGP updates to be generated and new BGP policies to be applied.
Unless the soft option is used, all connections are dropped (a “hard reset”): TCP
connections are terminated and all routes received from the neighbor are removed
from the BGP routing table. Then the connection with the neighbor is reestablished.
If the soft option is used, routes from the neighbor are marked as stale but are not
immediately removed from the BGP table. Stale routes that are not received from the
neighbor when the connection is reestablished are removed from the BGP table at
that point.
BGP
R6.4 v01
Vyatta
472
Chapter 7: Route Redistribution
This chapter describes commands for BGP route redistribution.
This chapter presents the following topics:
•
BGP
Route Redistribution Commands
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 473
Route Redistribution Commands
This chapter contains the following commands.
Configuration Commands
Route Redistribution Configuration ‐ IPv6
protocols bgp <asn> address‐family ipv6‐unicast redistribute connected
Redistributes IPv6 unicast directly connected routes into BGP.
protocols bgp <asn> address‐family ipv6‐unicast redistribute kernel
Redistributes IPv6 unicast kernel routes into BGP.
protocols bgp <asn> address‐family ipv6‐unicast redistribute ospfv3
Redistributes IPv6 unicast routes learned from OSPFv3 into BGP.
protocols bgp <asn> address‐family ipv6‐unicast redistribute ripng
Redistributes IPv6 unicast routes learned from RIPng into BGP.
protocols bgp <asn> address‐family ipv6‐unicast redistribute static
Redistributes IPv6 unicast static routes into BGP.
Route Redistribution Configuration
protocols bgp <asn> redistribute connected
Redistributes directly connected routes into BGP.
protocols bgp <asn> redistribute kernel
Redistributes kernel routes into BGP.
protocols bgp <asn> redistribute ospf
Redistributes routes learned from OSPF into BGP.
protocols bgp <asn> redistribute rip
Redistributes routes learned from RIP into BGP.
protocols bgp <asn> redistribute static
Redistributes static routes into BGP.
Operational Commands
None.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 474
protocols bgp <asn> address‐family ipv6‐unicast redistribute connected
Redistributes IPv6 unicast directly connected routes into BGP.
Syntax
set protocols bgp asn address-family ipv6-unicast redistribute connected [metric
metric | route-map map-name]
delete protocols bgp asn address-family ipv6-unicast redistribute connected [metric |
route-map]
show protocols bgp asn address-family ipv6-unicast redistribute connected
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
redistribute {
connected {
metric metric
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed connected
routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution map-name
Route Redistribution Commands 475
Optional. The name of a configured route map to be used for
redistributing connected routes.
Default
When this command has not been set, directly connected routes are not distributed
into BGP.
Usage Guidelines
Use this command to redistribute directly connected routes into BGP. The command
applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to redistribute directly
connected routes into BGP.
Use the delete form of this command to prevent redistribution of directly connected
routes into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 476
protocols bgp <asn> address‐family ipv6‐unicast redistribute kernel
Redistributes IPv6 unicast kernel routes into BGP.
Syntax
set protocols bgp asn address-family ipv6-unicast redistribute kernel [metric metric |
route-map map-name]
delete protocols bgp asn address-family ipv6-unicast redistribute kernel [metric |
route-map]
show protocols bgp asn address-family ipv6-unicast redistribute kernel
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
redistribute {
kernel {
metric metric
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed kernel
routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution map-name
Route Redistribution Commands 477
Optional. The name of a configured route map to be used for
redistributing kernel routes.
Default
When this command has not been set, kernel routes are not distributed into BGP.
Usage Guidelines
Use this command to redistribute kernel routes into BGP. The command applies to
IPv6 unicast routes only.
Use the set form of this command to direct the router to redistribute kernel routes
into BGP.
Use the delete form of this command to prevent redistribution of kernel routes into
BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 478
protocols bgp <asn> address‐family ipv6‐unicast redistribute ospfv3
Redistributes IPv6 unicast routes learned from OSPFv3 into BGP.
Syntax
set protocols bgp asn address-family ipv6-unicast redistribute ospfv3 [metric metric
| route-map map-name]
delete protocols bgp asn address-family ipv6-unicast redistribute ospfv3 [metric |
route-map]
show protocols bgp asn address-family ipv6-unicast redistribute ospfv3
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
redistribute {
ospfv3 {
metric metric
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed OSPFv3
routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution map-name
Route Redistribution Commands 479
Optional. The name of a configured route map to be used for
redistributing OSPFv3 routes.
Default
When this command has not been set, routes learned from OSPFv3 are not
distributed into BGP.
Usage Guidelines
Use this command to redistribute Open Shortest Path First Version 3 (OSPFv3)
routes into BGP. The command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to redistribute routes learned
from OSPFv3 into BGP.
Use the delete form of this command to prevent redistribution of routes learned from
OSPFv3 into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 480
protocols bgp <asn> address‐family ipv6‐unicast redistribute ripng
Redistributes IPv6 unicast routes learned from RIPng into BGP.
Syntax
set protocols bgp asn address-family ipv6-unicast redistribute ripng [metric metric |
route-map map-name]
delete protocols bgp asn address-family ipv6-unicast redistribute ripng [metric |
route-map]
show protocols bgp asn address-family ipv6-unicast redistribute ripng
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
redistribute {
ripng {
metric metric
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed RIPng
routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution map-name
Route Redistribution Commands 481
Optional. The name of a configured route map to be used for
redistributing RIPng routes.
Default
When this command has not been set, routes learned from RIPng are not distributed
into BGP.
Usage Guidelines
Use this command to redistribute Routing Information Protocol - next generation
(RIPng) routes into BGP. The command applies to IPv6 unicast routes only.
Use the set form of this command to direct the router to redistribute routes learned
from RIPng into BGP.
Use the delete form of this command to prevent redistribution of routes learned from
RIPng into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 482
protocols bgp <asn> address‐family ipv6‐unicast redistribute static
Redistributes IPv6 unicast static routes into BGP.
Syntax
set protocols bgp asn address-family ipv6-unicast redistribute static [metric metric |
route-map map-name]
delete protocols bgp asn address-family ipv6-unicast redistribute static [metric |
route-map]
show protocols bgp asn address-family ipv6-unicast redistribute static
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
address‐family {
ipv6‐unicast {
redistribute {
static {
metric metric
route‐map map‐name
}
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed static routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution map-name
Route Redistribution Commands 483
Optional. The name of a configured route map to be used for
redistributing static routes.
Default
When this command has not been set static routes are not distributed into BGP.
Usage Guidelines
Use this command to redistribute static routes into BGP. The command applies to
IPv6 unicast routes only.
Use the set form of this command to direct the router to redistribute static routes into
BGP.
Use the delete form of this command to prevent redistribution of static routes into
BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 484
protocols bgp <asn> redistribute connected
Redistributes directly connected routes into BGP.
Syntax
set protocols bgp asn redistribute connected [metric metric | route-map map-name]
delete protocols bgp asn redistribute connected [metric | route-map]
show protocols bgp asn redistribute
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
redistribute {
connected {
metric metric
route‐map map‐name
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed connected
routes.
map-name
Optional. The name of a configured route map to be used for
redistributing connected routes.
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 485
Default
When this command has not been set, directly connected routes are not distributed
into BGP.
Usage Guidelines
Use this command to redistribute directly connected routes into BGP.
Use the set form of this command to direct the router to redistribute directly
connected routes into BGP.
Use the delete form of this command to prevent redistribution of directly connected
routes into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 486
protocols bgp <asn> redistribute kernel
Redistributes kernel routes into BGP.
Syntax
set protocols bgp asn redistribute kernel [metric metric | route-map map-name]
delete protocols bgp asn redistribute kernel [metric | route-map]
show protocols bgp asn redistribute
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
redistribute {
kernel {
metric metric
route‐map map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed kernel
routes.
map-name
Optional. The name of a configured route map to be used for
redistributing kernel routes.
Default
When this command has not been set, kernel routes are not distributed into BGP.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 487
Usage Guidelines
Use this command to redistribute kernel routes into BGP.
Use the set form of this command to direct the router to redistribute kernel routes
into BGP.
Use the delete form of this command to prevent redistribution of kernel routes into
BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 488
protocols bgp <asn> redistribute ospf
Redistributes routes learned from OSPF into BGP.
Syntax
set protocols bgp asn redistribute ospf [metric metric | route-map map-name]
delete protocols bgp asn redistribute ospf [metric | route-map]
show protocols bgp asn redistribute
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
redistribute {
ospf {
metric metric
route‐map map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed OSPF routes.
map-name
Optional. The name of a configured route map to be used for
redistributing OSPF routes.
Default
When this command has not been set, routes learned from OSPF are not distributed
into BGP.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 489
Usage Guidelines
Use this command to redistribute Open Shortest Path First (OSPF) routes into BGP.
Use the set form of this command to direct the router to redistribute routes learned
from OSPF into BGP.
Use the delete form of this command to prevent redistribution of routes learned from
OSPF into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 490
protocols bgp <asn> redistribute rip
Redistributes routes learned from RIP into BGP.
Syntax
set protocols bgp asn redistribute rip [metric metric | route-map map-name]
delete protocols bgp asn redistribute rip [metric | route-map]
show protocols bgp asn redistribute
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
redistribute {
rip {
metric metric
route‐map map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed RIP routes.
map-name
Optional. The name of a configured route map to be used for
redistributing RIP routes.
Default
When this command has not been set, routes learned from RIP are not distributed
into BGP.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 491
Usage Guidelines
Use this command to redistribute Routing Information Protocol (RIP) routes into
BGP.
Use the set form of this command to direct the router to redistribute routes learned
from RIP into BGP.
Use the delete form of this command to prevent redistribution of routes learned from
RIP into BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 492
protocols bgp <asn> redistribute static
Redistributes static routes into BGP.
Syntax
set protocols bgp asn redistribute static [metric metric | route-map map-name]
delete protocols bgp asn redistribute static [metric | route-map]
show protocols bgp asn redistribute
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
redistribute {
static {
metric metric
route‐map map‐name
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
metric
Optional. The metric to be applied to redistributed static routes.
map-name
Optional. The name of a configured route map to be used for
redistributing static routes.
Default
When this command has not been set static routes are not distributed into BGP.
BGP
R6.4 v01
Vyatta
Chapter 7: Route Redistribution Route Redistribution Commands 493
Usage Guidelines
Use this command to redistribute static routes into BGP.
Use the set form of this command to direct the router to redistribute static routes into
BGP.
Use the delete form of this command to prevent redistribution of static routes into
BGP.
Use the show form of this command to view route redistribution configuration
settings.
BGP
R6.4 v01
Vyatta
494
Chapter 8: Route Server
This chapter describes commands for BGP route server.
This chapter presents the following topics:
•
BGP
Route Server Commands
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 495
Route Server Commands
This chapter contains the following commands.
Configuration Commands
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐server‐client
Specify this neighbor as a route server client.
protocols bgp <asn> neighbor <id> route‐server‐client
Defines the local router as a BGP route server, with the neighbor as a route server client.
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐server‐client
Specify this peer group as a route server client.
protocols bgp <asn> peer‐group <group‐name> route‐server‐client
Specify this peer group as a route server client.
Operational Commands
show ip bgp ipv4 unicast rsclient summary
Displays IPv4 unicast BGP route server client summary information.
show ip bgp rsclient <address>
Displays BGP route server client information.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 496
protocols bgp <asn> neighbor <id> address‐family ipv6‐unicast route‐server‐client
Specify this neighbor as a route server client.
Syntax
set protocols bgp asn neighbor id address-family ipv6-unicast route-server-client
delete protocols bgp asn neighbor id address-family ipv6-unicast route-server-client
show protocols bgp asn neighbor id address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
address‐family {
ipv6‐unicast {
route‐server‐client
}
}
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory. The IPv4 or IPv6 address of a BGP neighbor.
Default
Disabled.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 497
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to configure the BGP neighbor as a route server
client.
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 498
protocols bgp <asn> neighbor <id> route‐server‐client
Defines the local router as a BGP route server, with the neighbor as a route server
client.
Syntax
set protocols bgp asn neighbor id route-server-client
delete protocols bgp asn neighbor id route-server-client
show protocols bgp asn neighbor id
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
neighbor id {
route‐server‐client
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
id
Mandatory.The IP address of a BGP neighbor or the name of a
BGP peer group.
Default
There is no route server in the autonomous system.
Usage Guidelines
Use the set form of this command to make the local router a BGP route server, and
to designate the specified neighbor as a route server client.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 499
Use the delete form of this command to remove the neighbor as a route server client.
Use the show form of this command to view BGP neighbor configuration settings.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 500
protocols bgp <asn> peer‐group <group‐name> address‐family ipv6‐unicast route‐server‐client
Specify this peer group as a route server client.
Syntax
set protocols bgp asn peer-group group-name address-family ipv6-unicast
route-server-client
delete protocols bgp asn peer-group group-name address-family ipv6-unicast
route-server-client
show protocols bgp asn peer-group group-name address-family ipv6-unicast
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
address‐family {
ipv6‐unicast {
route‐server‐client
}
}
}
}
}
Parameters
BGP
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 501
Default
Disabled.
Usage Guidelines
This command applies to IPv6 unicast routes only.
Use the set form of this command to configure the BGP peer group as a route server
client.
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 502
protocols bgp <asn> peer‐group <group‐name> route‐server‐client
Specify this peer group as a route server client.
Syntax
set protocols bgp asn peer-group group-name route-server-client
delete protocols bgp asn peer-group group-name route-server-client
show protocols bgp asn peer-group group-name
Command Mode
Configuration mode.
Configuration Statement
protocols {
bgp asn {
peer‐group group‐name {
route‐server‐client
}
}
}
Parameters
asn
Mandatory. The number for the AS in which this router resides.
The range of values is 1 to 4294967294. The subrange 64512 to
65534 is reserved for private autonomous systems.
group-name
Mandatory. The peer group name.
Default
Disabled.
Usage Guidelines
Use the set form of this command to configure the BGP peer group as a route server
client.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 503
Use the delete form of this command to remove the configuration.
Use the show form of this command to view the configuration.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 504
show ip bgp ipv4 unicast rsclient summary
Displays IPv4 unicast BGP route server client summary information.
Syntax
show ip bgp ipv4 unicast rsclient summary
Command Mode
Operational mode.
Parameters
None.
Default
None.
Usage Guidelines
Use this command to display IPv4 unicast BGP route server client summary
information.
BGP
R6.4 v01
Vyatta
Chapter 8: Route Server Route Server Commands 505
show ip bgp rsclient <address>
Displays BGP route server client information.
Syntax
show ip bgp rsclient address [ipv4 | ipv4net | summary]
Command Mode
Operational mode.
Parameters
ipv4
Optional. Displays routes for the route server client at the
specified IPv4 address.
ipv4net
Optional. Displays routes for route server clients on the
specified IPv4 network.
summary
Optional. Displays summary information for all route server
clients.
Default
Detailed information is displayed for all route server clients.
Usage Guidelines
Use this command to display BGP route server client information.
BGP
R6.4 v01
Vyatta
506
Glossary of Acronyms
ACL
access control list
ADSL
Asymmetric Digital Subscriber Line
AMI
Amazon Machine Image
API
Application Programming Interface
AS
autonomous system
ARP
Address Resolution Protocol
AWS
Amazon Web Services
BGP
Border Gateway Protocol
BIOS
Basic Input Output System
BPDU
Bridge Protocol Data Unit
CA
certificate authority
CCMP
AES in counter mode with CBC-MAC
CHAP
Challenge Handshake Authentication Protocol
CLI
command-line interface
DDNS
dynamic DNS
DHCP
Dynamic Host Configuration Protocol
DHCPv6
Dynamic Host Configuration Protocol version 6
BGP
R6.4 v01
Vyatta
507
DLCI
data-link connection identifier
DMI
desktop management interface
DMZ
demilitarized zone
DN
distinguished name
DNS
Domain Name System
DSCP
Differentiated Services Code Point
DSL
Digital Subscriber Line
eBGP
external BGP
EBS
Amazon Elastic Block Storage
EC2
Amazon Elastic Compute Cloud
EGP
Exterior Gateway Protocol
ECMP
equal-cost multipath
ESP
Encapsulating Security Payload
FIB
Forwarding Information Base
FTP
File Transfer Protocol
GRE
Generic Routing Encapsulation
HDLC
High-Level Data Link Control
I/O
Input/Ouput
ICMP
Internet Control Message Protocol
IDS
Intrusion Detection System
IEEE
Institute of Electrical and Electronics Engineers
IGP
Interior Gateway Protocol
IPS
Intrusion Protection System
IKE
Internet Key Exchange
IP
Internet Protocol
IPOA
IP over ATM
BGP
R6.4 v01
Vyatta
508
IPsec
IP security
IPv4
IP Version 4
IPv6
IP Version 6
ISP
Internet Service Provider
KVM
Kernel-Based Virtual Machine
L2TP
Layer 2 Tunneling Protocol
LACP
Link Aggregation Control Protocol
LAN
local area network
LDAP
Lightweight Directory Access Protocol
LLDP
Link Layer Discovery Protocol
MAC
medium access control
MIB
Management Information Base
MLPPP
multilink PPP
MRRU
maximum received reconstructed unit
MTU
maximum transmission unit
NAT
Network Address Translation
ND
Neighbor Discovery
NIC
network interface card
NTP
Network Time Protocol
OSPF
Open Shortest Path First
OSPFv2
OSPF Version 2
OSPFv3
OSPF Version 3
P2P
peer-to-peer
PAM
Pluggable Authentication Module
PAP
Password Authentication Protocol
PAT
Port Address Translation
BGP
R6.4 v01
Vyatta
509
PCI
peripheral component interconnect
PKI
Public Key Infrastructure
PPP
Point-to-Point Protocol
PPPoA
PPP over ATM
PPPoE
PPP over Ethernet
PPTP
Point-to-Point Tunneling Protocol
PVC
permanent virtual circuit
QoS
quality of service
RADIUS
Remote Authentication Dial-In User Service
RHEL
Red Hat Enterprise Linux
RIB
Routing Information Base
RIP
Routing Information Protocol
RIPng
RIP next generation
Rx
receive
S3
Amazon Simple Storage Service
SLAAC
Stateless Address Auto-Configuration
SNMP
Simple Network Management Protocol
SMTP
Simple Mail Transfer Protocol
SONET
Synchronous Optical Network
SSH
Secure Shell
SSID
Service Set Identifier
STP
Spanning Tree Protocol
TACACS+
Terminal Access Controller Access Control System Plus
TCP
Transmission Control Protocol
TKIP
Temporal Key Integrity Protocol
ToS
Type of Service
BGP
R6.4 v01
Vyatta
510
Tx
transmit
UDP
User Datagram Protocol
vif
virtual interface
VLAN
virtual LAN
VPC
Amazon virtual private cloud
VPN
Virtual Private Network
VRRP
Virtual Router Redundancy Protocol
WAN
wide area network
WAP
wireless access point
WPA
Wired Protected Access
BGP
R6.4 v01
Vyatta
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising