EVPN L3VPN over SRv6 configuration examples. Aruba FlexNetwork MSR958X_2003X Routers Comware 9 Segment Routing, S0P11A, S0W31A

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Reset BGP sessions of the BGP EVPN address family. reset bgp [ instance instance-name ] ipv6-address [ prefix-length ] l2vpn evpn

EVPN L3VPN over SRv6 configuration examples

Example: Configuring IPv4 EVPN L3VPN over SRv6 in SRv6

BE mode

Network configuration

As shown in Figure 69 , the backbone network is an IPv6 network, and VPN 1 is an IPv4 network.

Deploy EVPN L3VPN over SRv6 in SRv6 BE mode between PE 1 and PE 2 and use an SRv6 tunnel to transmit EVPN traffic between the PEs.

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Configure EBGP to exchange VPN routing information between the CEs and PEs.

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Configure IPv6 IS-IS on the PEs in the same AS to realize IPv6 network connectivity.

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Configure MP-IBGP to exchange EVPN routing information between the PEs.

Figure 69 Network diagram

Loop0

PE 1 PE 2

Loop0

GE0/0/1

GE0/0/2

MPLS backbone

GE0/0/1

Loop0

GE0/0/1 GE0/0/1

CE 1

VPN 1

AS 65410

Table 20 Interface and IP address assignment

VPN 1

AS 65420

CE 2

Device

CE 1

PE 1

Procedure

Interface

GE0/0/1

Loop0

GE0/0/1

GE0/0/2

Loop0

GE0/0/1

GE0/0/2

IP address

10.1.1.2/24

1::1/128

10.1.1.1/24

2001::1/96

2::2/128

2001::2/96

2002::2/96

Device

PE 2

CE 2

Interface

Loop0

GE0/0/1

GE0/0/2

GE0/0/1

IP address

3::3/128

10.2.1.1/24

2002::1/96

10.2.1.2/24

1. Configure IPv6 IS-IS on the PEs and device P for network connectivity between the devices:

# Configure PE 1.

<PE1> system-view

[PE1] isis 1

[PE1-isis-1] is-level level-1

258

[PE1-isis-1] cost-style wide

[PE1-isis-1] network-entity 10.1111.1111.1111.00

[PE1-isis-1] address-family ipv6 unicast

[PE1-isis-1-ipv6] quit

[PE1-isis-1] quit

[PE1] interface loopback 0

[PE1-LoopBack0] ipv6 address 1::1 128

[PE1-LoopBack0] isis ipv6 enable 1

[PE1-LoopBack0] quit

[PE1] interface gigabitethernet 0/0/2

[PE1-GigabitEthernet0/0/2] ipv6 address 2001::1 96

[PE1-GigabitEthernet0/0/2] isis ipv6 enable

[PE1-GigabitEthernet0/0/2] quit

# Configure P.

<P> system-view

[P] isis

[P-isis-1] is-level level-1

[P-isis-1] cost-style wide

[P-isis-1] network-entity 10.2222.2222.2222.00

[P-isis-1] address-family ipv6 unicast

[P-isis-1-ipv6] quit

[P-isis-1] quit

[P] interface loopback 0

[P-LoopBack0] ipv6 address 2::2 128

[P-LoopBack0] isis ipv6 enable

[P-LoopBack0] quit

[P] interface gigabitethernet 0/0/1

[P-GigabitEthernet0/0/1] ipv6 address 2001::2 96

[P-GigabitEthernet0/0/1] isis ipv6 enable

[P-GigabitEthernet0/0/1] quit

[P] interface gigabitethernet 0/0/2

[P-GigabitEthernet0/0/2] ipv6 address 2002::2 96

[P-GigabitEthernet0/0/2] isis ipv6 enable

[P-GigabitEthernet0/0/2] quit

# Configure PE 2.

<PE2> system-view

[PE2] isis

[PE2-isis-1] is-level level-1

[PE2-isis-1] cost-style wide

[PE2-isis-1] network-entity 10.3333.3333.3333.00

[PE2-isis-1] address-family ipv6 unicast

[PE2-isis-1-ipv6] quit

[PE2-isis-1] quit

[PE2] interface loopback 0

[PE2-LoopBack0] ipv6 address 3::3 128

[PE2-LoopBack0] isis ipv6 enable

[PE2-LoopBack0] quit

[PE2] interface gigabitethernet 0/0/2

259

[PE2-GigabitEthernet0/0/2] ipv6 address 2002::1 96

[PE2-GigabitEthernet0/0/2] isis ipv6 enable

[PE2-GigabitEthernet0/0/2] quit

# Verify that PE 1, P, and PE 2 have established IPv6 IS-IS neighbor relationships and the neighbor state is up.

[PE1] display isis peer

[P] display isis peer

[PE2] display isis peer

# Verify that PE 1 and PE 2 each learn a route destined for the loopback interface of each other.

[PE1] display isis route ipv6

[PE2] display isis route ipv6

2. Configure VPN instance settings on PE 1 and PE 2 and verify that each CE can access its local

PE:

# Configure PE 1.

[PE1] ip vpn-instance vpn1

[PE1-vpn-instance-vpn1] route-distinguisher 100:1

[PE1-vpn-instance-vpn1] vpn-target 111:1

[PE1-vpn-instance-vpn1] quit

[PE1] interface gigabitethernet 0/0/1

[PE1-GigabitEthernet0/0/1] ip binding vpn-instance vpn1

[PE1-GigabitEthernet0/0/1] ip address 10.1.1.1 24

[PE1-GigabitEthernet0/0/1] quit

# Configure PE 2.

[PE2] ip vpn-instance vpn1

[PE2-vpn-instance-vpn1] route-distinguisher 100:1

[PE2-vpn-instance-vpn1] vpn-target 111:1

[PE2-vpn-instance-vpn1] quit

[PE2] interface gigabitethernet 0/0/1

[PE2-GigabitEthernet0/0/1] ip binding vpn-instance vpn1

[PE2-GigabitEthernet0/0/1] ip address 10.2.1.1 24

[PE2-GigabitEthernet0/0/1] quit

# Configure IP addresses for the interfaces on the CEs, as shown in Figure 69 . (Details not

shown.)

# Display VPN instance settings on each PE. This step uses PE 1 as an example.

[PE1] display ip vpn-instance

Total VPN-Instances configured : 1

Total IPv4 VPN-Instances configured : 1

Total IPv6 VPN-Instances configured : 1

VPN-Instance Name RD Address family Create time

vpn1 100:1 IPv4/IPv6 2019/08/12 13:59:39

# Verify that each PE can ping its local CE. This step uses PE 1 and CE 1 as an example.

[PE1] ping -vpn-instance vpn1 10.1.1.2

Ping 10.1.1.2 (10.1.1.2): 56 data bytes, press CTRL+C to break

56 bytes from 10.1.1.2: icmp_seq=0 ttl=255 time=2.000 ms

56 bytes from 10.1.1.2: icmp_seq=1 ttl=255 time=0.000 ms

56 bytes from 10.1.1.2: icmp_seq=2 ttl=255 time=1.000 ms

56 bytes from 10.1.1.2: icmp_seq=3 ttl=255 time=0.000 ms

56 bytes from 10.1.1.2: icmp_seq=4 ttl=255 time=0.000 ms

260

--- Ping statistics for 10.1.1.2 in VPN instance vpn1 ---

5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss round-trip min/avg/max/std-dev = 0.000/0.600/2.000/0.800 ms

3. Set up an EBGP peer relationship between each PE and its local CE and distribute VPN routes to EBGP:

# Configure CE 1.

<CE1> system-view

[CE1] bgp 65410

[CE1-bgp-default] peer 10.1.1.1 as-number 100

[CE1-bgp-default] address-family ipv4 unicast

[CE1-bgp-default-ipv4] peer 10.1.1.1 enable

[CE1-bgp-default-ipv4] import-route direct

[CE1-bgp-default-ipv4] quit

[CE1-bgp-default] quit

# Configure CE 2 in the same way as CE 1 is configured. (Details not shown.)

# Configure PE 1.

[PE1] bgp 100

[PE1-bgp-default] router-id 1.1.1.1

[PE1-bgp-default] ip vpn-instance vpn1

[PE1-bgp-default-vpn1] peer 10.1.1.2 as-number 65410

[PE1-bgp-default-vpn1] address-family ipv4 unicast

[PE1-bgp-default-ipv4-vpn1] peer 10.1.1.2 enable

[PE1-bgp-default-ipv4-vpn1] quit

[PE1-bgp-default-vpn1] quit

# Configure PE 2 in the same way PE 1 is configured. (Details not shown.)

# Verify that the PEs have established BGP peer relationships with their local CEs and the peers are in established state.

[PE1] display bgp peer ipv4 vpn-instance

[PE2] display bgp peer ipv4 vpn-instance

4. Set up an MP-IBGP peer relationship between PE 1 and PE 2:

# Configure PE 1.

[PE1] bgp 100

[PE1-bgp-default] peer 3::3 as-number 100

[PE1-bgp-default] peer 3::3 connect-interface loopback 0

[PE1-bgp-default] address-family l2vpn evpn

[PE1-bgp-default-evpn] peer 3::3 enable

[PE1-bgp-default-evpn] quit

[PE1-bgp-default] quit

# Configure PE 2.

[PE2] bgp 100

[PE2-bgp-default] peer 1::1 as-number 100

[PE2-bgp-default] peer 1::1 connect-interface loopback 0

[PE2-bgp-default] address-family l2vpn evpn

[PE2-bgp-default-evpn] peer 1::1 enable

[PE2-bgp-default-evpn] quit

[PE2-bgp-default] quit

261

# Verify that the PEs have established a BGP peer relationship and the peers are in established state.

[PE1] display bgp peer l2vpn evpn

[PE2] display bgp peer l2vpn evpn

5. Specify a source address for the outer IPv6 header of SRv6-encapsulated IPv4 EVPN L3VPN packets on PE 1 and PE 2:

# Configure PE 1.

[PE1] segment-routing ipv6

[PE1-segment-routing-ipv6] encapsulation source-address 11::11

# Configure PE 2.

[PE2] segment-routing ipv6

[PE2-segment-routing-ipv6] encapsulation source-address 33::33

6. Configure the destination address (End.DT4 SID) of the outer IPv6 header for

SRv6-encapsulated IPv4 EVPN L3VPN packets:

# Configure PE 1.

[PE1-segment-routing-ipv6] locator aaa ipv6-prefix 1:2::1:0 96 static 8

[PE1-segment-routing-ipv6-locator-aaa] quit

[PE1-segment-routing-ipv6] quit

[PE1] isis 1

[PE1-isis-1] address-family ipv6 unicast

[PE1-isis-1-ipv6] segment-routing ipv6 locator aaa

[PE1-isis-1-ipv6] quit

[PE1-isis-1] quit

# Configure PE 2.

[PE2-segment-routing-ipv6] locator bbb ipv6-prefix 6:5::1:0 96 static 8

[PE2-segment-routing-ipv6-locator-bbb] quit

[PE2-segment-routing-ipv6] quit

[PE2] isis 1

[PE2-isis-1] address-family ipv6 unicast

[PE2-isis-1-ipv6] segment-routing ipv6 locator bbb

[PE2-isis-1-ipv6] quit

[PE2-isis-1] quit

# Verify that the PEs have distributed the End.DT4 SIDs to the routing table and generated

SRv6 routes. This step uses PE 1 as an example.

[PE1] display ipv6 routing-table protocol srv6

Summary count : 1

SRv6 Routing table status : <Active>

Summary count : 1

Destination: 1:2::101/128 Protocol : SRv6

NextHop : ::1 Preference: 4

Interface : InLoop0 Cost : 0

SRv6 Routing table status : <Inactive>

Summary count : 0

7. Add End.DT4 SIDs to private network routes on PE 1 and PE 2:

262

# Configure PE 1.

[PE1] bgp 100

[PE1-bgp-default] ip vpn-instance vpn1

[PE1-bgp-default-vpn1] address-family ipv4 unicast

[PE1-bgp-default-ipv4-vpn1] segment-routing ipv6 locator aaa evpn

[PE1-bgp-default-ipv4-vpn1] quit

[PE1-bgp-default-vpn1] quit

[PE1-bgp-default] quit

# Configure PE 2.

[PE2] bgp 100

[PE2-bgp-default] ip vpn-instance vpn1

[PE2-bgp-default-vpn1] address-family ipv4 unicast

[PE2-bgp-default-ipv4-vpn1] segment-routing ipv6 locator bbb evpn

[PE2-bgp-default-ipv4-vpn1] quit

[PE2-bgp-default-vpn1] quit

[PE2-bgp-default] quit

8. Enable IPv6 peers on the PEs to exchange End.DT4 SIDs and enable SRv6 BE mode:

# Configure PE 1.

[PE1] bgp 100

[PE1-bgp-default] address-family l2vpn evpn

[PE1-bgp-default-evpn] peer 3::3 advertise encap-type srv6

[PE1-bgp-default-evpn] quit

[PE1-bgp-default] ip vpn-instance vpn1

[PE1-bgp-default-vpn1] address-family ipv4 unicast

[PE1-bgp-default-ipv4-vpn1] segment-routing ipv6 best-effort evpn

[PE1-bgp-default-ipv4-vpn1] quit

[PE1-bgp-default-vpn1] quit

[PE1-bgp-default] quit

# Configure PE 2.

[PE2] bgp 100

[PE2-bgp-default] address-family l2vpn evpn

[PE2-bgp-default-evpn] peer 1::1 advertise encap-type srv6

[PE2-bgp-default-evpn] quit

[PE2-bgp-default] ip vpn-instance vpn1

[PE2-bgp-default-vpn1] address-family ipv4 unicast

[PE2-bgp-default-ipv4-vpn1] segment-routing ipv6 best-effort evpn

[PE2-bgp-default-ipv4-vpn1] quit

[PE2-bgp-default-vpn1] quit

[PE2-bgp-default] quit

# Display BGP EVPN routing information on each PE and verify that the routes advertised by the PEs have the SID attribute. This step uses PE 1 as an example.

[PE1] display bgp l2vpn evpn [5][0][24][10.2.1.0]/80

BGP local router ID: 1.1.1.1

Local AS number: 100

Route distinguisher: 100:1(vpn1)

Total number of routes: 1

263

Paths: 1 available, 1 best

BGP routing table information of [5][0][24][10.2.1.0]/80:

From : 3::3 (3.3.3.3)

Rely nexthop : FE80::2A96:34FF:FE9D:216

Original nexthop: 3::3

Out interface : GigabitEthernet0/0/2

Route age : 00h14m23s

OutLabel : NULL

Ext-Community : <RT: 111:1>

RxPathID : 0x0

TxPathID : 0x0

PrefixSID : End.DT4 SID <6:5::101>

AS-path : 65420

Origin : incomplete

Attribute value : MED 0, localpref 100, pref-val 0

State : valid, internal, best

IP precedence : N/A

QoS local ID : N/A

Traffic index : N/A

EVPN route type : IP prefix advertisement route

ESI : 0000.0000.0000.0000.0000

Ethernet tag ID : 0

IP prefix : 10.2.1.0/24

Gateway address : 0.0.0.0

MPLS label : 16777215

Tunnel policy : NULL

Rely tunnel IDs : N/A

Verifying the configuration

# Display IPv4 routing table information on the PEs and verify that each PE has a route destined for the remote CE and the next hop of the route is the End.DT4 SID of the route. This step uses PE 1 as an example.

[PE1] display ip routing-table vpn-instance vpn1

Destinations : 11 Routes : 11

Destination/Mask Proto Pre Cost NextHop Interface

0.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0

10.1.1.0/24 Direct 0 0 10.1.1.1 GE0/0/1

10.1.1.0/32 Direct 0 0 10.1.1.1 GE0/0/1

10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0

10.1.1.255/32 Direct 0 0 10.1.1.1 GE0/0/1

10.2.1.0/24 BGP 255 0 6:5::1:0 GE0/0/2

127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0

127.0.0.0/32 Direct 0 0 127.0.0.1 InLoop0

127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0