Brocade Communications Systems | 6910 | Technical data | Brocade Communications Systems 6910 Technical data

53-1002348-02
9 May 2012
Brocade 6910
Ethernet Access Switch
Diagnostic Guide
Supporting R2.1.0.x
®
Copyright © 2012 Brocade Communications Systems, Inc. All Rights Reserved.
Brocade, Brocade Assurance, the B-wing symbol, BigIron, DCX, Fabric OS, FastIron, MLX, NetIron, SAN Health, ServerIron,
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OpenScript, and The Effortless Network are trademarks of Brocade Communications Systems, Inc., in the United States and/or in
other countries. Other brands, products, or service names mentioned may be trademarks of their respective owners.
Notice: This document is for informational purposes only and does not set forth any warranty, expressed or implied, concerning
any equipment, equipment feature, or service offered or to be offered by Brocade. Brocade reserves the right to make changes to
this document at any time, without notice, and assumes no responsibility for its use. This informational document describes
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Export of technical data contained in this document may require an export license from the United States government.
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respect to any loss, cost, liability, or damages arising from the information contained in this book or the computer programs that
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The product described by this document may contain “open source” software covered by the GNU General Public License or other
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terms applicable to the open source software, and obtain a copy of the programming source code, please visit
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Brocade Communications Systems, Inc.
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Document History
Title
Publication number
Summary of changes
Date
Brocade 6910 Ethernet Access Switch
Diagnostic Guide
53-1002348-02
Updated information in the
preface
May 2012
Brocade 6910 Ethernet Access Switch
Diagnostic Guide
53-1002348-01
New document
September 2011
Contents
About This Document
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
How to use this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Supported hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Document conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viii
Text formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Command syntax conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Getting technical help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Document feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Chapter 1
Using Diagnostic Commands
How to use diagnostic commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Console Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Chapter 2
System and System Management Diagnostics
Basic system information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
System hardware show commands . . . . . . . . . . . . . . . . . . . . . . . 3
System software show commands . . . . . . . . . . . . . . . . . . . . . . . . 4
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
TCAM partitioning and usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
TCAM show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Managing memory and CPU usage . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CPU usage show command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CPU memory show command . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power supply show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fiber-optic modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fiber-optic show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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Testing network connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pinging an IP address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Tracing a route . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 3
Layer 1 Diagnostics
Ethernet diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Duplex mismatches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ethernet show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 4
Layer 2 Protocol Diagnostics
MAC address learning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Address Resolution Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
MAC address learning show commands . . . . . . . . . . . . . . . . . .20
Spanning Tree Protocol and derivatives . . . . . . . . . . . . . . . . . . . . . .20
STP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
RSTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
MSTP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
STP show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 24
LACP trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Trunk show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . .26
VLAN trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
VLAN trunking show commands . . . . . . . . . . . . . . . . . . . . . . . . . 27
Ethernet Ring Protection switching . . . . . . . . . . . . . . . . . . . . . . . . . .28
ERPS show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Connectivity Fault Management . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
CFM show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Operation, Administration and Maintenance . . . . . . . . . . . . . . . . . .33
OAM show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Chapter 5
ACL and QoS Diagnostics
ACLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
ACL show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . 37
QoS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
QoS show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Chapter 6
Security Diagnostics
802.1x . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
802.1x show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
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Port loop detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Port loop detection show commands . . . . . . . . . . . . . . . . . . . . .44
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Port mirroring and monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Port mirroring show commands . . . . . . . . . . . . . . . . . . . . . . . . .45
RADIUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
RADIUS show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
SNMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
SNMP show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
TACACS and TACACS+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
TACACS+ show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Telnet and SSH connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Telnet and SSH show commands . . . . . . . . . . . . . . . . . . . . . . . . 51
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
SNTP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
SNTP show commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Chapter 7
Forwarding Diagnostics
Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Trunking show commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Configuration notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Common diagnostic scenarios . . . . . . . . . . . . . . . . . . . . . . . . . .55
Diagnostic Command Index
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About This Document
This manual describes troubleshooting and diagnostic commands available in the command line
interface (CLI) for the Brocade Ethernet Access Switch.
NOTE
Some troubleshooting commands report information about internal hardware settings and registers
that is relevant primarily to the Brocade engineering staff. Consequently, this information is not
described in this document.
Audience
This document is designed for system administrators with a working knowledge of Layer 2 and
Layer 3 switching and routing.
Disclaimer
This manual is provided without any warranty of any kind, expressed or implied. When using this
manual to troubleshoot Brocade products, you assume all risk as to the quality and performance of
the diagnostic procedures. Brocade assumes no liability for any damages, including general,
special, incidental, or consequential damages arising from the use of the diagnostic procedures in
this manual (including, but not limited to, any loss of profit or savings, loss of data, or failure to
successfully troubleshoot network problems).
Diagnostic information may be changed or updated without notice. You are responsible for
obtaining newer versions of this manual when they are made available. The procedures in this
document are not intended as a substitute for the expertise of qualified technicians.
Enabling diagnostic commands can seriously degrade system performance. Diagnostic commands
are generally intended for use when troubleshooting specific problems while working with qualified
service technicians, or in conjunction with calls to Brocade Technical Support. Whenever possible,
troubleshoot your system during periods of low network traffic and user activity to preserve system
performance.
If you have any questions regarding this Disclaimer, please contact us at support@brocade.com.
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Disclaimer
How to use this guide
This guide describes many common diagnostic processes for the Brocade BR6910 switch. Each
chapter contains diagnostic information about a specific segment of your network configuration.
Each topic consists of the following sections, where possible, and when the information is
applicable:
•
•
•
•
A brief description of the topic
Show commands related to the topic
Configuration notes for the topic
Common diagnostic scenarios
Supported hardware
The following hardware platforms are supported by the release of this guide:
• BR-6910-EAS-AC – Brocade 6910 Ethernet Access Switch, 12×1 GbE combination copper
10/100/1000 Base-T (RJ45) or 100/1000 Base-X SFP ports, redundant AC power supply
• BR-6910-EAS-DC – Brocade 6910 Ethernet Access Switch, 12×1 GbE combination copper
10/100/1000 Base-T (RJ45) or 100/1000 Base-X SFP ports, redundant DC power supply
• BR-6910-EAS-H-AC – Brocade 6910 Ethernet Access Switch, 12×1 GbE combination copper
10/100/1000 Base-T (RJ45) or 100/1000 Base-X SFP ports, redundant AC power supply,
temperature hardened
• BR-6910-EAS-H-DC – Brocade 6910 Ethernet Access Switch, 12×1 GbE combination copper
10/100/1000 Base-T (RJ45) or 100/1000 Base-X SFP ports, redundant DC power supply,
temperature hardened
Document conventions
This section describes text formatting conventions and important notice formats used in this
document.
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Disclaimer
Text formatting
The narrative-text formatting conventions that are used are as follows:
bold text
Identifies command names
Identifies the names of user-manipulated GUI elements
Identifies keywords
Identifies text to enter at the GUI or CLI
italic text
Provides emphasis
Identifies variables
Identifies document titles
code text
Identifies CLI output
Command syntax conventions
Command syntax in this manual follows these conventions:
command
Commands are printed in bold.
--option, option
Command options are printed in bold.
-argument, arg
Arguments.
{ }
Mandatory elements appear in braces.
[]
Optional elements appear in brackets.
variable
Variables are printed in italics.
...
Repeat the previous element, for example “member[,member...]”
value
Fixed values following arguments are printed in plain font. For example,
--show WWN
|
Boolean. Elements are exclusive. Example: --show -mode egress | ingress
Notes
The following notice statements are used in this manual.
NOTE
A note provides a tip, guidance, or advice, emphasizes important information, or provides a
reference to related information.
ATTENTION
An Attention statement indicates potential damage to hardware or data.
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Disclaimer
Related publications
The following Brocade Communications Systems, Inc. documents supplement the information in
this guide and can be located at http://www.brocade.com/ethernetproducts.
• Brocade 6910 Ethernet Access Switch Installation Guide
• Brocade 6910 Ethernet Access Switch MIB Reference
• Brocade 6910 Ethernet Access Switch Diagnostic Guide
NOTE
For the latest edition of these documents, which contain the most up-to-date information, see
Product Manuals at http://www.brocade.com/ethernetproducts.
Getting technical help
To contact Technical Support, go to http://www.brocade.com/services-support/index.page for the
latest e-mail and telephone contact information.
Document feedback
Quality is our first concern at Brocade and we have made every effort to ensure the accuracy and
completeness of this document. However, if you find an error or an omission, or you think that a
topic needs further development, we want to hear from you. Forward your feedback to:
documentation@brocade.com
Provide the title and version number of the document and as much detail as possible about your
comment, including the topic heading and page number and your suggestions for improvement.
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Chapter
1
Using Diagnostic Commands
How to use diagnostic commands
This chapter describes how to use Brocade diagnostic show commands to monitor and
troubleshoot the Brocade 6910 switch configuration. Show commands are accessible from the
Privileged Exec mode in the command line interface (CLI). Some show commands can be
configured to send output to a destination that you specify.
Many show commands are specifically designed to be used in conjunction with calls to Brocade
Technical Support. If you report a problem, the support engineer may ask you to execute one or
more of the diagnostic commands described in this guide.
Console Connection
To access the switch through the console port, perform these steps:
1. At the console prompt, enter the user name and password. (The default user names are
“admin” and “guest” with corresponding passwords of “admin” and “guest.”) When the
administrator user name and password is entered, the CLI displays the “Console#” prompt and
enters privileged access mode (i.e., Privileged Exec). When the guest user name and password
is entered, the CLI displays the “Console>” prompt and enters normal access mode (i.e.,
Normal Exec).
2. Enter the necessary commands to complete your desired tasks.
3. When finished, exit the session with the “quit” or “exit” command.
Show commands
Show commands provide information that is extremely helpful for troubleshooting. For most of the
environments discussed in this document, related show commands, show command output, and
output descriptions are included.
Many show commands generate output for a specific configuration.
show log
Syntax: show log {flash | ram}
The show log command allows you to view the system log. Command output similar to the following
is displayed.
Console# show logging ram
Syslog logging
History logging in RAM
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: Enabled
: Level debugging
1
Show commands
Console# show log ram
[9] 10:40:35 2011-04-15
"User(admin/Console), login successful."
level : 6, module : 5, function : 1, and event no. : 1
[8] 08:25:27 2011-04-15
"User(admin/Console), login successful."
level : 6, module : 5, function : 1, and event no. : 1
[7] 08:25:17 2011-04-15
"DHCP server responded."
level : 5, module : 9, function : 1, and event no. : 11
[6] 08:25:17 2011-04-15
"STA topology change notification."
level : 6, module : 5, function : 1, and event no. : 1
[5] 08:25:15 2011-04-15
"STP port state: MSTID 0, Eth 1/1 becomes forwarding."
level : 6, module : 5, function : 1, and event no. : 1
[4] 08:25:15 2011-04-15
"VLAN 1 link-up notification."
level : 6, module : 5, function : 1, and event no. : 1
[3] 08:25:14 2011-04-15
"Unit 1, Port 1 link-up 100M FD notification."
level : 6, module : 5, function : 1, and event no. : 1
[2] 08:25:10 2011-04-15
"System coldStart notification."
level : 6, module : 5, function : 1, and event no. : 1
[1] 08:25:09 2011-04-15
"CPU falling trap."
level : 6, module : 5, function : 1, and event no. : 1
[0] 08:24:59 2011-04-15
"CPU rising trap."
level : 6, module : 5, function : 1, and event no. : 1
2
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Chapter
2
System and System Management Diagnostics
This chapter describes many of the common system and system management diagnostic
processes for Brocade 6910 switch.
Basic system information
Basic system troubleshooting includes the verification of software images and their locations, and
monitoring hardware components such as power supplies. The following sections describe how to
display information, and what to look for when troubleshooting your hardware and system software.
System hardware show commands
show system
Syntax: show system
The show system command displays system information about the chassis, including primary and
redundant power supplies. The following example shows output for the show system command.
Console# show system
System Description : BR6910
System OID String : 1.3.6.1.4.1.1991.1.16.1
System Information
System Up Time
: 0 days, 4 hours, 27 minutes, and 30.58 seconds
System Name
:
System Location
:
System Contact
:
MAC Address (Unit 1)
: 70-72-CF-32-DD-FD
Web Server
: Enabled
Web Server Port
: 80
Web Secure Server
: Enabled
Web Secure Server Port : 443
Telnet Server
: Enabled
Telnet Server Port
: 23
Jumbo Frame
: Disabled
System Temperature:
Unit 1
Temperature 1: 28 degrees
Temperature 2: 26 degrees
Temperature 3: 26 degrees
Main Power Status
: Up
Redundant Power Status : Up
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Basic system information
show alarm-status
Syntax: show alarm-status
This command displays information on predefined alarms (i.e., non-configurable) and on the
link-down alarm (which is displayed as a minor alarm).
Console# show alarm-status
Unit 1
Asserted Alarm Input : [NONE]
Current Major Alarm Status:
One of the power status is failed.
Current Minor Alarm Status:[NONE]
Current Major Alarm Output Status:[ACTIVE]
Current Minor Alarm Output Status:[INACTIVE]
System software show commands
show version
Syntax: show version
Most boot issues occur because incorrect or incompatible images have been downloaded. The
show version command displays all versions that are currently loaded, as shown in the following
example.
Console# show version
Unit 1
Serial Number
Hardware Version
EPLD Version
Number of Ports
Main Power Status
Redundant Power Status
Role
Loader Version
Linux Kernel Version
Boot ROM Version
Operation Code Version
:
:
:
:
:
:
:
:
:
:
:
S123456
R0A
0.00
12
Up
Up
Master
0.0.0.5
2.6.22.18
0.0.0.1
0.0.1.6
Common diagnostic scenarios
System issues are rare. However, some problem sources can include:
• Software versions are not compatible.
• Environmental conditions, such as temperatures that are above or below operating thresholds,
are affecting operation of hardware components.
If you are experiencing system issues, contact Brocade Technical Support for help in
troubleshooting your system.
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TCAM partitioning and usage
TCAM partitioning and usage
Ternary Content Addressable Memory (TCAM) is a component of Brocade devices that facilitates
hardware forwarding. As packets flow through the Brocade device from a given source to a given
destination, the management processor records forwarding information about the flow in TCAM
entries. A TCAM entry generally contains next-hop information, such as the outgoing port, the MAC
address of the next-hop router, a VLAN tag, and so on. Once the Brocade device has this
information in TCAM, packets with the same source and destination can be forwarded by hardware,
bypassing the management processor, and speeding up forwarding time.
TCAM stores Layer 2, Layer 3, or Layer 4 information in policy control entries. These entries are
used by various system functions which rely on rule-based searches, including Access Control Lists
(ACLs), IP Source Guard filter rules, Quality of Service (QoS) processes, or traps. For example, when
binding an ACL to a port, each rule in an ACL will use two policy control entries; and when setting an
IP Source Guard filter rule for a port, the system will also use two policy control entries.
TCAM show commands
show access-list tcam-utilization
Syntax: show access-list tcam-utilization
This command shows utilization parameters for TCAM, including the number policy control entries
in use, the number of free policy control entries, and the overall percentage of TCAM in use.
NOTE
The total number of policy control entries is fixed at 640, and cannot be configured.
Console# show access-list tcam-utilization
Total Policy Control Entries : 640
Free Policy Control Entries : 522
Entries Used by System
: 118
Entries Used by User
: 0
TCAM Utilization
: 18.43%
Configuration notes
The Brocade 6910 switch can have up to 512 static and dynamic MAC addresses stored in the
TCAM (using two policy control entries per address). The ability of the TCAM to store large numbers
of addresses depends on the following factors:
• The number of source MAC addresses being learned by the TCAM.
• The number of destination MAC addresses being forwarded by the TCAM.
• The distribution of the MAC address entries across ports. For example, if one port is learning all
the source MAC addresses, the available TCAM will be used up by that port. In addition, a large
number of MAC address entries in the MAC table could increase CPU use.
• The TCAM provides a total of 1000 hardware entries. However, each rule used by the system
for basic functions or configured by the user requires two policy control entries. Some entries
are used by the system for basic functions, L3 lite functions (including static routing and
automatic routing between directly-connected Layer 3 interfaces), web authentication, IP
Source Guard, and any configured ACL rules.
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5
Managing memory and CPU usage
Common diagnostic scenarios
When troubleshooting TCAM issues, it is helpful to know when a device is running out of TCAM. The
following sections describe how to monitor TCAM usage.
Displaying TCAM settings
When a Brocade device boots, the system automatically sets default TCAM partitions.
The default TCAM settings are the same as the default partition percentage settings.
NOTE
The default TCAM partitions are fixed, and cannot be configured.
Determining if a device is running out of TCAM
The output of the show access-list tcam-utilization command will indicate if the device is running
out of TCAM.
Managing memory and CPU usage
To achieve maximum performance, it is important to understand CPU usage and memory issues in
the Brocade 6910 switches. The following sections discuss how to manage memory and CPU
usage.
The first step in determining how your device is using memory and the CPU is to get a view of the
activity. Several show commands display information about CPU usage and memory usage.
CPU usage show command
There is one command that shows the overall usage of the CPU, and the configured thresholds
used for sending an SNMP trap message.
show process cpu
Syntax: show process cpu
The show process cpu command displays overall CPU usage and alarm message thresholds, as
shown in the following example.
Console# show process cpu
CPU Utilization in the past 5 seconds : 19%
CPU Utilization in the past 60 seconds
Average Utilization
: 16%
Maximum Utilization
: 21%
Alarm Status
Current Alarm Status
: Off
Last Alarm Start Time
: Jun 17 07:42:29 2011
Last Alarm Duration Time : 20 seconds
Alarm Configuration
Rising Threshold
Falling Threshold
6
: 90%
: 70%
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Power supplies
CPU memory show command
The CPU uses memory buffers to handle interprocess communication (IPC) and external packets
sent and received by the management processor.
show memory
Syntax: show memory
The show memory command shows the amount of memory currently free for use, the amount of
memory allocated to active processes, and the total amount of system memory, and the configured
thresholds used for sending an SNMP trap message, as shown in the following example.
Console# show memory
Status Bytes
%
------ ---------- --Free
34775040 25
Used
99442688 75
Total
134217728
Alarm Configuration
Rising Threshold
Falling Threshold
: 90%
: 70%
Power supplies
Information about power supplies can be displayed.
Power supply show commands
show system
Syntax: show system
You can view power supply information using the show system command. Command output
resembles the following example. (The temperatures shown by this command are in Celsius.)
Console# show system
System Description : BR6910
System OID String : 1.3.6.1.4.1.1991.1.16.1
System Information
System Up Time
: 0 days, 4 hours, 37 minutes, and 26.11 seconds
System Name
:
System Location
:
System Contact
:
MAC Address (Unit 1)
: 70-72-CF-32-DD-FD
Web Server
: Enabled
Web Server Port
: 80
Web Secure Server
: Enabled
Web Secure Server Port : 443
Telnet Server
: Enabled
Telnet Server Port
: 23
Jumbo Frame
: Disabled
System Temperature:
Unit 1
Temperature 1: 28 degrees
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Temperature 2: 26 degrees
Temperature 3: 26 degrees
7
Fiber-optic modules
Main Power Status
: Up
Redundant Power Status : Up
Configuration notes
There are several cautions and warnings that you should pay attention to when installing or
replacing power supplies. Refer to the Brocade BR6910 Installation Guide for more information.
Common diagnostic scenarios
• Power supply is not providing power - check all power connections, and replace faulty power
supply if necessary. See the Bro a dc om BR6910 Installation Guide for more information.
• Temperature is outside normal operating range. See the following section.
What to do if the temperature is outside normal operating range
If the device detects temperatures outside the normal range, depending on the severity of the
reading, it will automatically do one of the following:
•
•
•
•
Leave the fan speed as is.
Increase the fan speed.
Decrease the fan speed.
Generate a Syslog message and an SNMP trap.
If none of these measures resolves the problem, you should perform the following steps:
1. Shut down the device immediately.
2. Inspect all fans for damage or failure.
3. Inspect electrical connections to the fans.
4. Contact technical support at Brocade for assistance.
The normal operating temperature, humidity, and altitude specifications for Bro a dc om 6910
Switch are:
• Operating Temperature: -40° – 149° F (-40° – 65° C).
• Relative Humidity: 5 to 90%, @ 149° F (65° C), non-condensing.
• Operating Altitude: 0 – 10,000 ft (0 – 3048 meters).
Fiber-optic modules
The most common problems with fiber-optic modules are caused by dirty connectors. Optical
cables that are contaminated in any way (with dust, hand oil, and so on) can degrade the optic eye
pattern. Some of the following symptoms may be experienced:
• Port appears not to function (either no link or unstable link)
• Cyclic redundancy check (CRC) errors
• Port flapping
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Fiber-optic modules
• Packet loss
Before inserting the fiber cable into the fiber-optic transceiver, ensure that it is free of dust by
cleaning the end. A “Fiber Swiper” cleaner is provided by Brocade for this purpose with each optic
shipment (reference instructions provided with the Fiber Swiper).
It is very important that the end of an optical cable is clean when using any data rate. This must be
the first step in troubleshooting symptoms such as those stated previously. Always ensure that the
optical cables are cleaned.
NOTE
When not using a fiber-optic module port connector, replace the protective cover to prevent dust or
dirt from contaminating the connector.
Fiber-optic show commands
show interfaces transceiver
Syntax: show interfaces transceiver [ethernet unit/port]
This command displays information about optic modules installed in the Brocade 6910 switches.
Optics information resembles the output segment in the following example.
Console# show interfaces
Information of Eth 1/1
Connector Type
:
Fiber Type
:
Eth Compliance Codes :
Baud Rate
:
Vendor OUI
:
Vendor Name
:
Vendor PN
:
Vendor Rev
:
Vendor SN
:
Date Code
:
DDM Info
Not support DDM
transceiver ethernet 1/1
LC
Multimode 50um (M5), Multimode 62.5um (M6)
1000BASE-SX
1200 MBd
00-30-D3
AGILENT
HFBR-5710L
0111010843570877
01-11-01
Configuration notes
Before installing or removing fiber optic modules, refer to the precautions and follow the
instructions in the Brocade 6910 Installation Guide.
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9
Testing network connectivity
Testing network connectivity
You can test connectivity to other network devices by pinging those devices. You also can trace
routes.
Pinging an IP address
To verify that a Brocade 6910 switch can reach another device through the network, enter the ping
command at the Normal Exec or Privileged Exec level of the CLI, or enter the ping6 command at the
Privileged Exec level of the CLI.
ping
Syntax: ping {ipv4-addr | hostname} [count num] [size byte]
•
•
•
•
ipv4-addr - Specifies the IP address of the device.
hostname - Specifies the host name.
count num - Specifies how many ping packets the device sends.
size byte - Specifies the size of the ICMP data portion of the packet.
NOTE
If you address the ping to the IP broadcast address, the device lists the first four responses to the
ping.
ping6
Syntax: ping6 {ipv6-addr | hostname} [count num] [size byte]
• ipv6-addr - Specifies the IPv6 address of a neighbor device. You can specify either a link-local
or global unicast address formatted according to RFC 2373, “IPv6 Addressing Architecture,”
using eight colon-separated 16-bit hexadecimal values. One double colon may be used in the
address to indicate the appropriate number of zeros required to fill the undefined fields.
NOTE
The same link-local address may be used by different interfaces or nodes in different zones
(RFC 4007). Therefore, when specifying a link-local address, include zone ID information
indicating the VLAN identifier after the % delimiter. For example, FE80::7272%1 identifies
VLAN 1 as the interface from which the ping is sent.
• hostname - Specifies a host name string that can be resolved into an IPv6 address through a
domain name server.
• count num - Specifies how many ping packets the device sends.
• size byte - Specifies the size of the ICMP data portion of the packet.
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Testing network connectivity
Tracing a route
To determine the path through which the router can reach another network device, enter the
traceroute command at the Privileged Exec level of the CLI.
traceroute
Syntax: traceroute {ipv4-addr | hostname}
• ipv4-addr - Specifies the IP address of the device.
• hostname - Specifies the host name.
The CLI displays trace route information for each hop as soon as the information is received. A
trace terminates when the destination responds, when the time-to-live (TTL) is exceeded, or the
maximum number of hops is exceeded.
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11
Testing network connectivity
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Chapter
Layer 1 Diagnostics
3
This chapter describes common Layer 1 diagnostic procedures for the Brocade 6910 series
switches. In general, Layer 1 issues are related to hardware, the most common being the following
physical connectivity problems:
•
•
•
•
•
•
•
•
Faulty ports
Faulty cables
Faulty hardware
Input and output errors
Cyclic redundancy check (CRC) errors
Excessive or late collisions
Overruns
Output buffer failures
Ethernet diagnostics
The following sections describe how to troubleshoot Layer 1 issues for Ethernet interfaces.
Duplex mismatches
A duplex mismatch can occur between devices in the following situations:
• One device is manually set to half duplex and one device is manually set to full duplex.
• One device is set to autonegotiation and one device is manually set to full duplex.
Duplex mismatches are difficult to diagnose because the network still appears to be working.
Simple tests, such as ping, report a valid connection even though network performance can be
much slower than normal.
When one device operates in full duplex while the other one operates in half duplex, the connection
works at a very low speed if both devices attempt to send frames at the same time. This is because
a full-duplex device may transmit data while it is receiving, but if the other device is working in half
duplex, it cannot receive data while it is sending. The half-duplex device senses a collision and
attempts to resend the frame it was sending. Depending on timing, the half-duplex device may
sense a late collision, which it will interpret as a hard error, and will not attempt to resend the
frame. At the other end, the full-duplex device does not detect a collision and does not resend the
frame, even if the half-duplex device has already discarded it as corrupted by collision.
The packet loss happens when both devices are transmitting at the same time, and may happen
even when the link is used, from the user's perspective, in one direction only. A Transmission
Control Protocol (TCP) stream requires that all packets sent be acknowledged by the receiving
device, even if actual data is sent in one direction only. Packet collisions may occur with
acknowledgement packets traveling in the other direction.
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Ethernet diagnostics
Because the full-duplex device does not expect incoming frames to be truncated by collision
detection, the device reports Frame Check Sequence (FCS) errors. The combination of late
collisions reported at the half-duplex end, and FCS errors reported by the full-duplex end, can
indicate a duplex mismatch.
Ethernet show commands
This section describes the show commands that display information about Ethernet interfaces.
show interfaces brief
Syntax: show interfaces brief
This command displays a summary of the information provided in the show interfaces command.
Command output resembles the following example.
Console# show interfaces brief
Interface Name
Status
PVID Pri Speed/Duplex
--------- ------------------ -------- ---- --- ------------Eth 1/ 1
Up
1
0 Auto-100full
Eth 1/ 2
Down
1
0 Auto
Type
-----------1000T
1000Base SFP
Trunk
----None
None
show interfaces counters ethernet
Syntax: show interfaces counters ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays statistics about a specific Ethernet interface, as shown in the following
example.
Console# show interfaces counters ethernet 1/1
Ethernet 1/ 1
===== IF table Stats =====
1562954 Octets Input
5265175 Octets Output
5389 Unicast Input
6254 Unicast Output
0 Discard Input
0 Discard Output
0 Error Input
0 Error Output
0 Unknown Protos Input
0 QLen Output
===== Extended Iftable Stats =====
10446 Multi-cast Input
11128 Multi-cast Output
313 Broadcast Input
2 Broadcast Output
===== Ether-like Stats =====
0 Alignment Errors
0 FCS Errors
0 Single Collision Frames
0 Multiple Collision Frames
0 SQE Test Errors
0 Deferred Transmissions
0 Late Collisions
0 Excessive Collisions
0 Pause Frames Output
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Ethernet diagnostics
===== RMON Stats =====
0
10305324
32060
270
9075
0
0
0
0
0
0
0
0
0
Drop Events
Octets
Packets
Broadcast PKTS
Multi-cast PKTS
Undersize PKTS
Oversize PKTS
Fragments
Internal Mac Transmit Errors
Internal Mac Receive Errors
Frames Too Long
Carrier Sense Errors
Symbol Errors
Pause Frames Input
show interfaces status ethernet
Syntax: show interfaces status ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays the operational status for Ethernet ports, as shown in the following
example.
Console# show interfaces status ethernet 1/1
Information of Eth 1/1
Basic Information:
Port Type
: 1000BASE-T
MAC Address
: 70-72-CF-32-DD-FE
Configuration:
Name
:
Port Admin
: Up
Speed-duplex
: Auto
Capabilities
: 10half, 10full, 100half, 100full, 1000full
Broadcast Storm
: Enabled
Broadcast Storm Limit : 64 Kbits/second
Multicast Storm
: Disabled
Multicast Storm Limit : 64 Kbits/second
Unknown Unicast Storm
: Disabled
Unknown Unicast Storm Limit : 64 Kbits/second
Flow Control
: Disabled
VLAN Trunking
: Disabled
LACP
: Disabled
Port Security
: Disabled
Max MAC Count
: 0
Port Security Action
: None
Media Type
: SFP preferred auto
Current Status:
Link Status
: Up
Port Operation Status : Up
Operation Speed-duplex : 100full
Up Time
: 0w 0d 5h 51m 29s (21089 seconds)
Flow Control Type
: None
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15
Ethernet diagnostics
show interfaces switchport ethernet
Syntax: show interfaces switchport ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays the administrative and operational status for Ethernet ports, as shown in
the following example.
Console# show interfaces switchport ethernet 1/1
Information of Eth 1/1
Broadcast Threshold
: Enabled, 64 Kbits/second
Multicast Threshold
: Disabled
Unknown Unicast Threshold
: Disabled
LACP Status
: Disabled
Ingress Rate Limit
: Disabled, 64 Kbits per second
Egress Rate Limit
: Disabled, 1000000 Kbits per second
VLAN Membership Mode
: Hybrid
Ingress Rule
: Disabled
Acceptable Frame Type
: All frames
Native VLAN
: 1
Priority for Untagged Traffic : 0
GVRP Status
: Disabled
Allowed VLAN
:
1(u)
Forbidden VLAN
:
802.1Q Tunnel Status
: Disabled
802.1Q Tunnel Mode
: Normal
802.1Q Tunnel TPID
: 8100 (Hex)
Layer 2 Protocol Tunnel
: None
Common diagnostic scenarios
The following issues can occur with Ethernet interfaces:
• Faulty hardware
Whenever you encounter a connection problem, check for faulty hardware. Replace cables, try
another port, and check all cable connections. If you find a faulty port, contact Brocade
Technical Support for assistance.
• Link failures
Link failures can be due to a failure of the transmission medium or of the devices at each end
of a connection. Be sure to check all of the hardware involved in the link, including cables and
ports.
• CSMA/CD
The Carrier Sense Multiple Access (CSMA) with Collision Detection (CD) protocol controls
access to shared Ethernet media. A switched network (for example, Fast Ethernet) may use a
full-duplex mode with access to the full link speed between directly connected network
interface cards (NICs), switch-to-NIC cables, or switch-to-switch cables.
• CRC errors
The Cyclic Redundancy Check (CRC) length specifies whether the CRC portion of each frame
transmitted on the interface is 16 bits or 32 bits long. The default is 32 bits.
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Ethernet diagnostics
A CRC alignment error is generated when the total number of packets received is from 64
through 1518 octets, but contains either a bad FCS with an integral number of octets (FCS
error) or a bad FCS with a non-integral number of octets (alignment error).
• Runts
Any received packet that is less than 64 bytes is illegal, and is called a runt. In most cases,
runts arise from a collision, and although they indicate an illegal reception, they may occur on
correctly functioning networks. The receiving Brocade device discards all runt frames.
• Giants
Any received packet that is greater than the maximum frame size is called a giant. In theory,
the jabber control circuit in the transceiver must prevent any node from generating such a
frame, but certain failures in the physical layer may also give rise to oversized Ethernet frames.
Like runts, giants are discarded by the receiving Brocade device.
• Misaligned frames
Any frame that does not contain an integral number of received octets (bytes) is also illegal. A
receiver has no way of knowing which bits are legal, and how to compute the CRC-32 of the
frame. Such frames are therefore also discarded by the receiving Brocade device.
NOTE
Brocade recommends regular software maintenance and upgrades to keep up with firmware code
updates.
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Ethernet diagnostics
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Chapter
4
Layer 2 Protocol Diagnostics
This chapter describes Layer 2 troubleshooting and diagnostic processes for the Brocade 6910
switch.
MAC address learning
In MAC address learning, the source MAC address of each received packet is stored so that future
packets destined for that address can be forwarded only to the interface where that address is
located. (Packets destined for unrecognized addresses are forwarded out every bridge interface.)
MAC address learning, defined in the IEEE 802.1 standard, helps minimize traffic on the attached
LANs.
Address Resolution Protocol
Switches use Address Resolution Protocol (ARP) to learn the MAC addresses of devices on the
network. The switch sends an ARP request that contains the IP address of a device, and receives
the MAC address for that device in an ARP reply. These dynamically learned entries are stored in
the ARP cache. You can also manually configure MAC addresses, which are called static entries.
Dynamic and static ARP entries in the ARP cache resemble the following:
Console# show arp
ARP Cache Timeout: 1200 (seconds)
IP Address
--------------192.168.0.2
192.168.0.9
192.168.0.99
MAC Address
----------------74-8E-F8-68-02-30
11-22-33-44-55-66
00-E0-29-94-34-64
Type
--------other
static
dynamic
Interface
----------VLAN1
VLAN1
VLAN1
Total entry : 3
ARP age
The ARP age is the amount of time the device keeps a learned MAC address in the ARP cache. The
device resets the timer to zero each time the ARP entry is refreshed and removes the entry if the
timer reaches the ARP age. The default ARP age is 20 minutes.
Changing the ARP aging period
When the switch places an entry in the ARP cache, it also starts an aging timer for the entry. The
aging timer ensures that the ARP cache does not retain learned entries that are no longer valid. An
entry can become invalid when the device with the MAC address of the entry is no longer on the
network.
ARP age affects dynamic entries only.
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19
Spanning Tree Protocol and derivatives
MAC address learning show commands
The following command displays information about the MAC address table.
show mac-address-table
Syntax: show mac-address-table
This command displays the MAC address table, which contains MAC addresses learned from other
devices. This table does not contain the MAC addresses of the Brocade device ports.
Console# show mac-address-table
Total entry in system: 3
Interface MAC Address
VLAN Type
Life Time
--------- ----------------- ---- -------- ----------------CPU
70-72-CF-32-DD-FD
1 CPU
Delete on Reset
Eth 1/ 1 00-01-EC-F8-D8-D6
1 Learn
Delete on Timeout
Eth 1/ 1 00-E0-29-94-34-64
1 Learn
Delete on Timeout
Spanning Tree Protocol and derivatives
The following sections describe diagnostic procedures for Spanning Tree Protocol (STP) and STP
derivatives, including RSTP and MSTP.
NOTE
Layer 2 protocols such as STP and RSTP can be enabled on port-based VLANs, but cannot be
enabled or disabled on protocol-based VLANs.
STP
A control protocol, such as Spanning Tree Protocol (STP), can block one or more ports in a
protocol-based VLAN that uses a virtual routing interface to route to other VLANs. For IP VLANs and
IP subnet VLANs, even though some of the physical ports of the virtual routing interface are
blocked, the virtual routing interface can still route as long as at least one port in the
protocol-based VLAN is not blocked by STP.
RSTP
Rapid Spanning Tree Protocol (RSTP) provides rapid traffic reconvergence for point-to-point links
within a few milliseconds (less than 500 milliseconds) following the failure of a bridge or bridge
port. This reconvergence occurs more rapidly than that provided by STP because convergence in
RSTP bridges is based on the explicit handshakes between designated ports and their connected
root ports rather than on timer values.
MSTP
With Multiple Spanning Tree Protocol (MSTP), the entire network runs a common instance of RSTP.
Within the common instance, one or more VLANs can be individually configured into distinct
regions. The entire network runs the Common Spanning Tree (CST) instance and the regions run a
local instance, or Internal Spanning Tree (IST). Because the CST treats each IST as a single bridge,
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Spanning Tree Protocol and derivatives
ports are blocked to prevent loops that might occur within an IST and also throughout the CST. In
addition, MSTP can co-exist with individual devices running STP or RSTP in the Common and
Internal Spanning Tree instance (CIST). With the exception of the provisions for multiple instances,
MSTP operates exactly like RSTP.
STP show commands
show spanning-tree
Syntax: show spanning-tree [brief | ethernet unit/port | port-channel channel-id|
stp-enabled-only]
•
•
•
•
brief - Shows a brief summary of STP settings for each port.
ethernet unit/port - Specifies a port within the VLAN for detailed STP information.
port-channel channel-id - Specifies a trunk within the VLAN for detailed STP information.
stp-enabled-only - Shows STP settings for the switch and for STP-enabled ports.
This command displays global settings for STP.
Console# show spanning-tree
Spanning Tree Information
--------------------------------------------------------------Spanning Tree Mode
: STP
Spanning Tree Enabled/Disabled : Enabled
Instance
: 0
VLANs Configured
: 1-4093
Priority
: 32768
Bridge Hello Time (sec.)
: 2
Bridge Max. Age (sec.)
: 20
Bridge Forward Delay (sec.)
: 15
Root Hello Time (sec.)
: 2
Root Max. Age (sec.)
: 20
Root Forward Delay (sec.)
: 15
Max. Hops
: 20
Remaining Hops
: 20
Designated Root
: 32768.0001ECF8D8C6
Current Root Port
: 1
Current Root Cost
: 100000
Number of Topology Changes
: 2
Last Topology Change Time (sec.): 790
Transmission Limit
: 3
Path Cost Method
: Long
Flooding Behavior
: To VLAN
Cisco Prestandard
: Disabled
This command displays detailed STP information (in this instance, for Port 1).
Console# show spanning-tree ethernet 1/1
Eth 1/ 1 Information
-------------------------------------------------------------Admin Status
: Enabled
Role
: Root
State
: Forwarding
Admin Path Cost
: 0
Oper Path Cost
: 100000
Priority
: 128
Designated Cost
: 0
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Spanning Tree Protocol and derivatives
Designated Port
Designated Root
Designated Bridge
Forward Transitions
Admin Edge Port
Oper Edge Port
Admin Link Type
Oper Link Type
Flooding Behavior
Spanning-Tree Status
Loopback Detection Status
Loopback Detection Release Mode
Loopback Detection Trap
Loopback Detection Action
Root Guard Status
BPDU Guard Status
BPDU Guard Auto Recovery
BPDU Guard Auto Recovery Interval
BPDU Filter Status
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
128.16
32768.0001ECF8D8C6
32768.0001ECF8D8C6
2
Auto
Disabled
Auto
Point-to-point
Enabled
Enabled
Enabled
Auto
Disabled
Block
Disabled
Disabled
Disabled
300
Disabled
This command displays global settings for RSTP.
Console# show spanning-tree
Spanning Tree Information
--------------------------------------------------------------Spanning Tree Mode
: RSTP
Spanning Tree Enabled/Disabled : Enabled
Instance
: 0
VLANs Configured
: 1-4093
Priority
: 32768
Bridge Hello Time (sec.)
: 2
Bridge Max. Age (sec.)
: 20
Bridge Forward Delay (sec.)
: 15
Root Hello Time (sec.)
: 2
Root Max. Age (sec.)
: 20
Root Forward Delay (sec.)
: 15
Max. Hops
: 20
Remaining Hops
: 20
Designated Root
: 32768.00E00C109000
Current Root Port(Eth)
: 1/1
Current Root Cost
: 100000
Number of Topology Changes
: 1
Last Topology Change Time (sec.): 494
Transmission Limit
: 3
Path Cost Method
: Long
Flooding Behavior
: To VLAN
Cisco Prestandard
: Disabled
--------------------------------------------------------------Eth 1/ 1 Information
--------------------------------------------------------------Admin Status
: Enabled
Role
: Root
State
: Forwarding
Admin Path Cost
: 0
Oper Path Cost
: 100000
Priority
: 128
Designated Cost
: 0
Designated Port
: 128.9
Designated Root
: 32768.00E00C109000
Designated Bridge
: 32768.00E00C109000
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Spanning Tree Protocol and derivatives
Forward Transitions
Admin Edge Port
Oper Edge Port
Admin Link Type
Oper Link Type
Flooding Behavior
Spanning-Tree Status
Loopback Detection Status
Loopback Detection Release Mode
Loopback Detection Trap
Loopback Detection Action
Root Guard Status
BPDU Guard Status
BPDU Guard Auto Recovery
BPDU Guard Auto Recovery Interval
BPDU Filter Status
...
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
2
Auto
Disabled
Auto
Point-to-point
Enabled
Enabled
Enabled
Auto
Disabled
Block
Disabled
Disabled
Disabled
300
Disabled
This command displays global settings for MSTP.
Console# show spanning-tree
Spanning Tree Information
--------------------------------------------------------------Spanning Tree Mode
: MSTP
Spanning Tree Enabled/Disabled : Enabled
Instance
: 0
VLANs Configured
: 1-4093
Priority
: 32768
Bridge Hello Time (sec.)
: 2
Bridge Max. Age (sec.)
: 20
Bridge Forward Delay (sec.)
: 15
Root Hello Time (sec.)
: 2
Root Max. Age (sec.)
: 20
Root Forward Delay (sec.)
: 15
Max. Hops
: 20
Remaining Hops
: 20
Designated Root
: 32768.0.00E00C109000
Current Root Port(Eth)
: 1/1
Current Root Cost
: 100000
Number of Topology Changes
: 2
Last Topology Change Time (sec.): 46
Transmission Limit
: 3
Path Cost Method
: Long
Flooding Behavior
: To VLAN
Cisco Prestandard
: Disabled
--------------------------------------------------------------Eth 1/ 1 Information
--------------------------------------------------------------Admin Status
: Enabled
Role
: Root
State
: Forwarding
External Admin Path Cost
: 0
Internal Admin Path Cost
: 0
External Oper Path Cost
: 100000
Internal Oper Path Cost
: 100000
Priority
: 128
Designated Cost
: 0
Designated Port
: 128.9
Designated Root
: 32768.0.00E00C109000
Designated Bridge
: 32768.0.00E00C109000
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LACP trunking
Forward Transitions
Admin Edge Port
Oper Edge Port
Admin Link Type
Oper Link Type
Flooding Behavior
Spanning-Tree Status
Loopback Detection Status
Loopback Detection Release Mode
Loopback Detection Trap
Loopback Detection Action
Root Guard Status
BPDU Guard Status
BPDU Guard Auto Recovery
BPDU Guard Auto Recovery Interval
BPDU Filter Status
...
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
3
Auto
Disabled
Auto
Point-to-point
Enabled
Enabled
Enabled
Auto
Disabled
Block
Disabled
Disabled
Disabled
300
Disabled
Configuration notes
• Changing the STP state of the primary port in a trunk group affects all ports in the trunk group.
• With RSTP, rapid convergence will not occur on ports connected to shared media devices, such
as hubs. To take advantage of the rapid convergence provided by RSTP, make sure to explicitly
configure all point-to-point links in a topology.
This command shows how to explicitly configure an interface which is attached to a LAN
segment at the end of a bridged LAN or to an end node.
Console(config)# interface ethernet 1/5
Console(config-if)# spanning-tree edge-port
Console(config-if)#
Common diagnostic scenarios
• Spanning Tree loops.
• Spanning Tree reacts to topology changes and port flapping.
• Port flapping can trigger a new Spanning Tree learning process.
LACP trunking
The Link Aggregation Control Protocol (LACP) allows ports on both sides of a redundant link to
automatically configure themselves into a trunk link (aggregate link), eliminating the need for
manual configuration. LACP has two modes:
• Active mode – When active link aggregation is enabled, the Brocade port can exchange
standard LACP Data Unit (LACPDU) messages to negotiate trunk group configuration with the
port on the other side of the link. In addition, the Brocade port actively sends LACPDU
messages on the link to search for a link aggregation partner at the other end of the link, and
can initiate an LACPDU exchange to negotiate link aggregation parameters with an
appropriately configured remote port.
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LACP trunking
• Passive mode – In passive link aggregation, the Brocade port can exchange LACPDU messages
with the port at the remote end of the link, but this port cannot search for a link aggregation
port or initiate negotiation of an aggregate link. In passive mode, the port at the remote end of
the link must initiate the LACPDU exchange.
When you enable link aggregation on a group of Brocade ports, the Brocade ports can negotiate
with the ports at the remote ends of the links to establish trunk groups.
Trunk show commands
The following show commands display information about trunking configurations.
show lacp internal
Syntax: show lacp [port-channel] internal
port-channel - Local identifier for a link aggregation group. (Range: 1-5)
This command displays trunk information for configuration settings and the operational state for
the local side.
Console# show lacp 1 internal
Port Channel : 1
------------------------------------------------------------------------Oper Key : 3
Admin Key : 0
Eth 1/ 1
------------------------------------------------------------------------LACPDUs Internal
: 30 seconds
LACP System Priority : 32768
LACP Port Priority
: 32768
Admin Key
: 3
Oper Key
: 3
Admin State
: defaulted, aggregation, long timeout, LACP-activity
Oper State
: distributing, collecting, synchronization,
aggregation, long timeout, LACP-activity
.
.
.
show lacp neighbors
Syntax: show lacp [port-channel] internal
port-channel - Local identifier for a link aggregation group. (Range: 1-5)
This command displays trunk information for configuration settings and the operational state for
the remote side.
Console# show lacp 1 neighbors
Port Channel 1 neighbors
------------------------------------------------------------------------Eth 1/ 1
------------------------------------------------------------------------Partner Admin System ID
: 32768, 00-00-00-00-00-00
Partner Oper System ID
: 32768, 00-12-CF-61-24-2F
Partner Admin Port Number : 1
Partner Oper Port Number : 1
Port Admin Priority
: 32768
Port Oper Priority
: 32768
Admin Key
: 0
Oper Key
: 3
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LACP trunking
Admin State:
Oper State:
.
.
.
defaulted, distributing, collecting,
synchronization, long timeout,
distributing, collecting, synchronization,
aggregation, long timeout, LACP-activity
Configuration notes
• You cannot use 802.3ad link aggregation on a port configured as a member of a static trunk
group.
• When LACP dynamically adds or changes a trunk group, the show interface status port-channel
command displays the trunk as both configured and active. However, the show running-config
commands do not contain a trunk command defining the new or changed trunk group.
• You can enable link aggregation on 802.1q tagged ports that belong to more than one
port-based VLAN.
• Brocade recommends that you disable or remove the cables from the ports you plan to enable
for dynamic link aggregation. Doing so prevents the possibility that LACP will use a partial
configuration to talk to the other side of a link. A partial configuration does not cause errors,
but sometimes requires LACP to be disabled and re-enabled on both sides of the link to ensure
that a full configuration is used. It is easier to disable a port or remove its cable first. This
applies both for active link aggregation and passive link aggregation.
Trunk formation rules
When troubleshooting trunks, make sure the following rules for trunk formation have been
considered:
• Any number of ports between 2 and 12 within the same chassis can be used to configure a
trunk port.
• Ports in a trunk must have the same speed, negotiation mode, and Quality of Service (QoS)
priority or the trunk is rejected.
•
•
•
•
All ports configured in a trunk must be configured with the same port attributes.
Primary port policy applies to all secondary ports. No trunk is rejected.
The trunk is rejected if any trunk port has mirroring or monitoring configured.
The trunk is rejected if any trunk port has VLAN or inner-VLAN translation configured (also
known as VLAN trunking).
Common diagnostic scenarios
• LACP trunk links may not operate properly between Brocade devices and third-party devices
because of a mismatch between the link configurations. If the link is fixed on the third-party
side, the link on the Brocade side must be a trunk. If it is link-aggregated on the third-party
side, then it must be the same on the Brocade side.
• LACP links may not operate properly due to misconfigurations. Contact Brocade Technical
Support for help with configuration issues.
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VLAN trunking
VLAN trunking
VLAN trunking allows traffic from one VLAN to be transported across a different VLAN. Packets with
unknown VLAN IDs entering the switch at the ingress port are allowed to pass through to any
configured VLAN trunking port. When unknown VLAN traffic must pass through one or more
intermediate switches to reach its destination, you can configure VLAN flooding on ports that form
a path across the intermediate switches to connect the source of this traffic to its destination.
This feature is useful for service providers who must carry traffic from different customers across
their network while preserving the VLAN ID and priority information of the customer network.
VLAN trunking show commands
show interfaces status
Syntax: show interfaces status ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays the configuration status of VLAN trunking for the specified port.
Console# show interfaces status ethernet 1/1
Information of Eth 1/1
Basic Information:
Port Type
: 1000T
MAC Address
: 70-72-CF-32-DD-FE
Configuration:
Name
:
Port Admin
: Up
Speed-duplex
: Auto
Capabilities
: 10half, 10full, 100half, 100full, 1000full
Broadcast Storm
: Enabled
Broadcast Storm Limit : 64 Kbits/second
Multicast Storm
: Disabled
Multicast Storm Limit : 64 Kbits/second
Unknown Unicast Storm
: Disabled
Unknown Unicast Storm Limit : 64 Kbits/second
Flow Control
: Disabled
VLAN Trunking
: Enabled
LACP
: Disabled
Port Security
: Disabled
Max MAC Count
: 0
Port Security Action
: None
Media Type
: SFP preferred auto
Current Status:
Link Status
: Up
Port Operation Status : Up
Operation Speed-duplex : 100full
Up Time
: 0w 0d 0h 40m 36s (2436 seconds)
Flow Control Type
: None
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Ethernet Ring Protection switching
Ethernet Ring Protection switching
The ITU G.8032 recommendation specifies a protection switching mechanism and protocol for
Ethernet layer network rings. Ethernet rings can provide wide-area multipoint connectivity and
redundancy more economically due to their reduced number of links. The mechanisms and
protocol defined in G.8032 achieve highly reliable and stable protection; and never form loops,
which would fatally affect network operation and service availability.
To configure Ethernet Protection Ring Switching (ERPS), follow the guidelines in the Brocade 6910
Ethernet Access Switch Configuration Guide. If you encounter any problems, use the following
show command to display a summary of the configuration settings and operational status for all
rings, or detailed information for a specific ring.
ERPS show commands
Syntax: show erps
Syntax: show erps [domain ring-name]
ring-name - Name of a specific ERPS ring. (Range: 1-32 characters)
This command displays the configuration settings and operational status of ERPS.
Console# show erps
ERPS Status : Enabled
Number of ERPS Domains : 1
Domain State MEL Enabled West East RPL Owner Ctrl VLAN
------------ ---------- --- ------- -------- -------- --------- --------rd1 Idle 0 Yes Eth 1/12 Eth 1/10 Yes 100
rd2 Protection 0 Yes Eth 1/3 Eth 1/4 No 200
This command displays detailed information for a specific ring.
Console#show erps domain rd1
Domain Name : rd1
Admin Status : Enabled
MEG Level : 1
Node ID : 00-12-CF-61-24-2F
Node State : Idle
West Port : Eth 1/ 1 (Blocking)
East Port : Eth 1/ 2 (Forwarding)
RPL Port : West
RPL Owner : Enabled
Holdoff Timer : 300 ms
Guard Timer : 300 ms
WTR Timer : 5 minutes
Control VLAN : 2
Propagate TC : Disabled
Connectivity Fault Management
Connectivity Fault Management (CFM) is an OAM protocol that includes proactive connectivity
monitoring using continuity check messages, fault verification through loop back messages, and
fault isolation by examining end-to-end connections between provider edge devices or between
customer edge devices.
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Connectivity Fault Management
CFM is implemented as a service level protocol based on service instances which encompass only
that portion of the metropolitan area network supporting a specific customer. CFM can also provide
controlled management access to a hierarchy of maintenance domains (such as the customer,
service provider, and equipment operator).
This switch supports functions for defining the CFM structure, including domains, maintenance
associations, and maintenance access points. It also supports fault detection through continuity
check messages for all known maintenance points, and cross-check messages which are used to
verify a static list of remote maintenance points located on other devices (in the same
maintenance association) against those found through continuity check messages. Fault
verification is supported using loop back messages, and fault isolation with link trace messages.
Fault notification is also provided by SNMP alarms which are automatically generated by
maintenance points when connectivity faults or configuration errors are detected in the local
maintenance domain.
To configure CFM), follow the guidelines in the Brocade 6910 Ethernet Access Switch Configuration
Guide. If you encounter any problems, use the following show command to display a summary of
the configuration settings and operational status for all rings, or detailed information for a specific
ring.
CFM show commands
This commands displays CFM configuration settings, including global settings, SNMP traps, and
interface settings.
show ethernet cfm configuration
Syntax: show ethernet cfm configuration {global | traps | interface interface}
global – Displays global settings including CFM global status, cross-check start delay, and link
trace parameters.
traps – Displays the status of all continuity check and cross-check traps.
interface – Displays CFM status for the specified interface.
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
This example shows the global settings for CFM.
Console# show ethernet cfm configuration global
CFM Global Status
: Enabled
Crosscheck Start Delay
: 10 seconds
Linktrace Cache Status
: Enabled
Linktrace Cache Hold Time : 100 minutes
Linktrace Cache Size
: 100 entries
This example shows the configuration status for continuity check and cross-check traps.
Console# show ethernet cfm configuration traps
CC MEP Up Trap
: Disabled
CC MEP Down Trap
: Disabled
CC Configure Trap
: Disabled
CC Loop Trap
: Disabled
Cross Check MEP Unknown Trap : Disabled
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Connectivity Fault Management
Cross Check MEP Missing Trap
Cross Check MA Up
: Disabled
: Disabled
This example shows the CFM status for port 1.
Console #show ethernet cfm configuration interface ethernet 1/1
Ethernet 1/1 CFM Status:Enabled
This command displays configured maintenance domains.
show ethernet cfm md
Syntax: show ethernet cfm md [level level]
level – Maintenance level. (Range: 0-7)
This example shows all configured maintenance domains.
Console#show ethernet cfm md
MD Index MD Name
-------- -------------------1 rd
Level
----0
MIP Creation
-----------default
Archive Hold Time (m.)
---------------------100
This command displays configured maintenance associations.
show ethernet cfm ma
Syntax: show ethernet cfm ma [level level]
level – Maintenance level. (Range: 0-7)
This example shows all configured maintenance associations.
Console# show ethernet cfm ma
MD Name
MA Index MA Name
Primary VID CC Interval MIP Creation
--------------- -------- --------------- ----------- ----------- -----------steve
1 voip
1
4 Default
This command displays maintenance points configured on this device.
show ethernet cfm maintenance-points local
Syntax: show ethernet cfm maintenance-points local
{mep [domain domain-name | interface interface | level level-id] |
mip [domain domain-name | level level-id]}
mep – Displays only local maintenance end points.
mip – Displays only local maintenance intermediate points.
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
interface – Displays CFM status for the specified interface.
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
level-id – Maintenance level for this domain. (Range: 0-7)
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Connectivity Fault Management
This example shows all MEPs configured on this device for maintenance domain rd.
Console#show ethernet cfm maintenance-points local mep
MPID MD Name
Level Direct VLAN Port
CC Status MAC Address
---- ---------------- ----- ------ ---- -------- --------- ----------------1 rd
0 UP
1 Eth 1/ 1 Enabled
00-12-CF-3A-A8-C0
This command displays detailed CFM information about a specified local MEP in the continuity
check database.
show ethernet cfm maintenance-points local detail mep
Syntax: show ethernet cfm maintenance-points local detail mep [domain domain-name |
interface interface | level level-id]
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
interface – Displays CFM status for the specified interface.
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
level-id – Maintenance level for this domain. (Range: 0-7)
This example shows detailed information about the local MEP on port 1.
Console# show ethernet cfm maintenance-points local detail mep interface ethernet
1/1
MEP Settings:
------------MPID
: 1
MD Name
: vopu
MA Name
: r&d
MA Name Format
: Character String
Level
: 0
Direction
: Up
Interface
: Eth 1/ 1
CC Status
: Enabled
MAC Address
: 00-E0-0C-00-00-FD
Defect Condition
: No Defect
Received RDI
: False
AIS Status
: Enabled
AIS Period
: 1 seconds
AIS Transmit Level
: Default
Suppress Alarm
: Disabled
Suppressing Alarms
: Disabled
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31
Connectivity Fault Management
This command displays detailed CFM information about a specified remote MEP in the continuity
check database.
show ethernet cfm maintenance-points remote detail
Syntax: show ethernet cfm maintenance-points remote detail
{mac mac-address | mpid mpid}
[domain domain-name | level level-id | ma ma-name]
mac-address – MAC address of a remote maintenance point.
This address can be entered in either of the following formats: xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx
mpid – Maintenance end point identifier. (Range: 1-8191)
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
level-id – Authorized maintenance level for this domain. (Range: 0-7)
ma-name – Maintenance association name. (Range: 1-45 alphanumeric characters)
This example shows detailed information about the remote MEP designated by MPID 2.
Console# show ethernet
MAC Address
Domain/Level
MA Name
Primary VLAN
MPID
CC Lifetime
Age of Last CC Message
Frame Loss
CC Packet Statistics
Port State
Interface State
Crosscheck Status
cfm maintenance-points remote detail mpid 2
: 00-0D-54-FC-A2-73
: voip / 3
: rd
: 1
: 2
: 645 seconds
: 2 seconds
: 137
: 647/1
: Up
: Up
: Enabled
This command displays CFM continuity check errors logged on this device.
show ethernet cfm errors
Syntax: show ethernet cfm errors [domain domain-name | level level-id]
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
level-id – Authorized maintenance level for this domain. (Range: 0-7)
This example shows a continuity check error logged for this device.
Console# show ethernet cfm errors
Level VLAN MPID Interface Remote MAC
Reason
MA Name
----- ---- ---- --------- ----------------- ---------------- ---------------5
2
40 Eth 1/1
ab.2f.9c.00.05.01 LEAK
provider_1_2
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Operation, Administration and Maintenance
This command displays information about remote maintenance points configured statically in a
cross-check list.
show ethernet cfm maintenance-points remote crosscheck
Syntax: show ethernet cfm maintenance-points remote crosscheck
[domain domain-name | mpid mpid]
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
mpid – Maintenance end point identifier. (Range: 1-8191)
This example shows all remote MEPs statically configured on this device.
Console# show ethernet cfm maintenance-points remote crosscheck
MPID MA Name
Level VLAN MEP Up Remote MAC Address
---- -------------------- ----- ---- ------ -----------------2 downtown
4
2 Yes
00-0D-54-FC-A2-73
This command displays the contents of the link trace cache.
show ethernet cfm linktrace-cache
Syntax: show ethernet cfm linktrace-cache
This example shows the contents of the link trace cache.
Console# show ethernet cfm linktrace-cache
Hops MA
IP / Alias
Forwarded
---- -------------- ----------------------2 rd
192.168.0.6
Not Forwarded
Ingress MAC
Egress MAC
----------------00-12-CF-12-12-2D
Ing. Action Relay
Egr. Action
----------- ----ingOk
Hit
Operation, Administration and Maintenance
The switch provides OAM (Operation, Administration and Maintenance) remote management tools
required to monitor and maintain the links to subscriber CPEs (Customer Premise Equipment).
OAM can be used to perform loopback testing, or to display remote device information.
OAM show commands
This command displays counters for various OAM PDU message types.
show efm oam counters interface
Syntax: show efm oam counters interface [interface-list]
interface-list - unit/port
unit - Unit identifier. (Range: 1)
port - Port number or list of ports. To enter a list, separate nonconsecutive port identifiers
with a comma and no spaces; use a hyphen to designate a range of ports. (Range: 1-12)
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33
Operation, Administration and Maintenance
This example displays counters for OAM PDU message types.
Console# show efm oam counters interface 1/1
Port OAMPDU Type
TX
RX
---- --------------------- ---------- ---------1/1 Information
1121
1444
1/1 Event Notification
0
0
1/1 Loopback Control
1
0
1/1 Organization Specific 76
0
This command displays the OAM event log for the specified port(s) or for all ports that have logs.
show efm oam event-log interface
Syntax: show efm oam event-log interface [interface-list]
interface-list - unit/port
unit - Unit identifier. (Range: 1)
port - Port number or list of ports. To enter a list, separate nonconsecutive port identifiers
with a comma and no spaces; use a hyphen to designate a range of ports. (Range: 1-12)
This example displays the OAM event log.
Console# show efm oam event-log interface 1/1
OAM event log of Eth 1/1:
00:24:07 2001/01/01
"Unit 1, Port 1: Dying Gasp at Remote"
This command displays the results of an OAM remote loopback test.
show efm oam remote-loopback interface
Syntax: show efm oam remote-loopback interface [interface-list]
interface-list - unit/port
unit - Unit identifier. (Range: 1)
port - Port number or list of ports. To enter a list, separate nonconsecutive port identifiers
with a comma and no spaces; use a hyphen to designate a range of ports. (Range: 1-12)
This example displays the results of an OAM remote loopback test.
Console# show efm oam remote-loopback interface 1/1
Port OAM loopback Tx OAM loopback Rx Loss Rate
---- --------------- --------------- --------1/1
10000
9999
0.01 %
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Operation, Administration and Maintenance
This command displays OAM configuration settings and event counters.
show efm oam status interface
Syntax: show efm oam status interface [interface-list] [brief]
interface-list - unit/port
unit - Unit identifier. (Range: 1)
port - Port number or list of ports. To enter a list, separate nonconsecutive port identifiers
with a comma and no spaces; use a hyphen to designate a range of ports. (Range: 1-12)
brief - Displays a brief list of OAM configuration states.
This example displays a full list of OAM configuration settings and event counters.
Console# show efm oam status interface 1/1
OAM information of Eth 1/1:
Basic Information:
Admin State
: Enabled
Operation State
: Operational
Mode
: Active
Remote Loopback
: Disabled
Remote Loopback Status
: No loopback
Dying Gasp
: Enabled
Critical Event
: Enabled
Link Monitor (Errored Frame)
: Enabled
Link Monitor:
Errored Frame Window (100msec) : 10
Errored Frame Threshold
: 1
This example displays a summary of OAM configuration settings and event counters.
Console#s how efm oam status interface 1/1 brief
$ = local OAM in loopback
* = remote OAM in loopback
Port Admin
Mode
State
---- ------- ------1/1 Enabled Active
Remote
Loopback
-------Disabled
Dying
Gasp
------Enabled
Critical
Event
-------Enabled
Errored
Frame
------Enabled
This command displays information about attached OAM-enabled devices.
show efm oam status remote interface
Syntax: show efm oam status remote interface [interface-list]
interface-list - unit/port
unit - Unit identifier. (Range: 1)
port - Port number or list of ports. To enter a list, separate nonconsecutive port identifiers
with a comma and no spaces; use a hyphen to designate a range of ports. (Range: 1-12)
This example displays information about attached OAM-enabled devices.
Console#show efm oam status remote interface 1/1
Port MAC Address
OUI
Remote
Unidirectional
Loopback
---- ----------------- ------ -------- -------------1/1 00-12-CF-6A-07-F6 000084 Enabled Disabled
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Link
Monitor
------Enabled
MIB Variable
Retrieval
-----------Disabled
35
Operation, Administration and Maintenance
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Chapter
ACL and QoS Diagnostics
5
This chapter provides diagnostic information for Access Control List (ACL) and Quality of Service
(QoS) environments, including traffic management.
ACLs
Access Control List (ACL) show commands help users to diagnose and determine the cause of
faults for ACL-related features. For details on Layer 2 ACLs, refer to the Layer 2 ACL chapter in the
Brocade BR6910 Configuration Guide.
ACL show commands
show access-list
Syntax: show ip {standard | extended} access-list [acl-name]
show ipv6 {standard | extended} access-list [acl-name]
show mac ace ss-list [acl-name]
This command displays the ACLs configured on a Brocade device.
Enter the ACL name for the acl-name parameter to display a specific ACL, enter this command
without a name to display all configured ACLs for the specified ACL type, or enter the command
without specifying the ACL type or name to display all configured ACLs.
For a specific ACL, enter a command similar to the following example.
Console# show ip standard access-list david
IP standard access-list david:
permit host 10.1.1.21
permit 168.92.0.0 255.255.15.0
Common diagnostic scenarios
• When an ACL was removed from a port with port mapping (ACL-based rate-limiting) configured,
the Brocade 6910 stopped all traffic on this port.
If you make an ACL configuration change, you must reapply the ACLs to their interfaces for the
change to take effect. An ACL configuration change includes any of the following actions:
-
Adding, changing, or removing an ACL or an entry in an ACL
Changing ToS-based QoS mappings
To reapply an ACL following an ACL configuration change, enter the ip access-group command
at the interface configuration level of the CLI as shown in the following example.
Console(config)# interface ethernet 1/2
Console(config-if)# ip access-group david in
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QoS
QoS
Quality of Service (QoS) features prioritize the use of bandwidth in a switch. When QoS features are
enabled, traffic is classified as it arrives at the switch, and processed on the basis of configured
priorities. Traffic can be dropped, prioritized for delivery, or subjected to limited delivery options,
depending on how you configure QoS features.
QoS show commands
show qos map trust-mode
Syntax: show qos map trust-mode interface interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
This command displays the QoS mapping mode.
Console# show qos map trust-mode interface ethernet 1/5
Information of Eth 1/5
COS Map mode: CoS mode
show qos map cos-dscp
Syntax: show qos map cos-dscp interface interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
If a packet arrives with a 802.1Q header but it is not an IP packet, then this table is used to map
the Class of Service/Canonical Format Indicator (CoS/CFI) values in the ingress packet to priority
and drop precedence values for internal processing
This command shows the ingress CoS/CFI to internal Differentiated Services Code Point Service
(DSCP) map.
Console# show qos map cos-dscp interface ethernet 1/5
CoS Information of Eth 1/5
CoS-DSCP map.(x,y),x: PHB,y: drop precedence:
CoS : CFI 0 1
--------------------------------0 (0,0) (0,0)
1 (1,0) (1,0)
2 (2,0) (2,0)
3 (3,0) (3,0)
4 (4,0) (4,0)
5 (5,0) (5,0)
6 (6,0) (6,0)
7 (7,0) (7,0)
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QoS
show qos map dscp-mutation
Syntax: show qos map cos-dscp interface interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
This map is only used when the QoS mapping mode is set to “DSCP” by the qos map trust-mode
command, and the ingress packet type is IPv4.
Two QoS domains can have different DSCP definitions, so the DSCP-to-PHB/Drop Precedence
mutation map can be used to modify one set of DSCP values to match the definition of another
domain. The mutation map should be applied at the receiving port (ingress mutation) at the
boundary of a QoS administrative domain.
This command shows the ingress DSCP to internal DSCP mutation map.
Console# show qos map dscp-mutation interface ethernet 1/5
Information of Eth 1/5
DSCP mutation map.(x,y),x: PHB,y: drop precedence:
d1: d2 0
1
2
3
4
5
6
7
8
9
------------------------------------------------------------------0 :
(0,0) (0,1) (0,0) (0,3) (0,0) (0,1) (0,0) (0,3) (1,0) (1,1)
1 :
(1,0) (1,3) (1,0) (1,1) (1,0) (1,3) (2,0) (2,1) (2,0) (2,3)
2 :
(2,0) (2,1) (2,0) (2,3) (3,0) (3,1) (3,0) (3,3) (3,0) (3,1)
3 :
(3,0) (3,3) (4,0) (4,1) (4,0) (4,3) (4,0) (4,1) (4,0) (4,3)
4 :
(5,0) (5,1) (5,0) (5,3) (5,0) (5,1) (5,0) (5,3) (6,0) (6,1)
5 :
(6,0) (6,3) (6,0) (6,1) (6,0) (6,3) (7,0) (7,1) (7,0) (7,3)
6 :
(7,0) (7,1) (7,0) (7,3)
show qos map phb-queue
Syntax: show qos map phb-queue interface interface
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
This command shows the internal per-hop behavior to hardware queue map.
Console# show qos map phb-queue interface ethernet 1/5
Information of Eth 1/5
PHB-queue map:
PHB:
0
1
2
3
4
5
6
7
------------------------------------------------------queue:
2
0
1
3
4
5
6
7
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QoS
show queue mode
Syntax: show queue mode
This command shows the current queue mode.
Console# show queue mode
Queue Mode : Weighted Round Robin Mode
show queue weight
Syntax: show queue weight
This command displays the weights used for the weighted queues.
Console# show queue weight
Queue ID Weight
-------- -----0
1
1
2
2
4
3
6
4
8
5
10
6
12
7
14
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Chapter
6
Security Diagnostics
This chapter describes diagnostic information for security environments on the Brocade 6910
series switches.
802.1x
802.1x port security allows you to configure a Brocade device to grant access to a port based on
information supplied by a client to an authentication server.
This section describes how to use show commands to monitor 802.1x configurations and activity
on Brocade 6910 series switches.
802.1x show commands
You can display the following 802.1x-related information:
• Information about the 802.1x configuration on the device and on individual ports
• Statistics about the EAPOL frames passing through the device
• Information about the 802.1x multiple client configuration
show dot1x
Syntax: show dot1x
This command displays information about the 802.1x configuration, as shown in the following
example.
Console# show dot1x
Global 802.1X Parameters
System Auth Control
: Enabled
Authenticator Parameters:
EAPOL Pass Through
: Disabled
Supplicant Parameters:
Identity Profile Username : steve
802.1X Port Summary
Port
Type
Operation Mode Control Mode
-------- ------------- -------------- -----------------Eth 1/ 1 Disabled
Single-Host
Force-Authorized
Eth 1/ 2 Disabled
Single-Host
Force-Authorized
...
Eth 1/11 Disabled Single-Host Force-Authorized Yes
Eth 1/12 Enabled Single-Host Auto Yes
802.1X Port Details
Authorized
---------Yes
Yes
802.1X Supplicant is disabled on port 1/1
...
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802.1x
802.1X Authenticator
Reauthentication
Reauth Period
Quiet Period
TX Period
Supplicant Timeout
Server Timeout
Reauth Max Retries
Max Request
Operation Mode
Port Control
Intrusion Action
is enabled on port 12
: Enabled
: 3600
: 60
: 30
: 30
: 10
: 2
: 2
: Multi-host
: Auto
: Block traffic
Supplicant
: 00-e0-29-94-34-65
Authenticator PAE State Machine
State
: Authenticated
Reauth Count
: 0
Current Identifier : 3
Backend State Machine
State
: Idle
Request Count
: 0
Identifier(Server) : 2
Reauthentication State Machine
State : Initialize
show dot1x interface
Syntax: show dot1x interface ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays information about the 802.1x configuration on a specified port, as shown
in the following example.
Console# show dot1x interface ethernet 1/12
802.1X Authenticator is enabled on port 1/12
Reauthentication
: Disabled
Reauth Period
: 3600 seconds
Quiet Period
: 60 seconds
TX Period
: 30 seconds
Supplicant Timeout
: 30 seconds
Server Timeout
: 10 seconds
Reauth Max Retries
: 2
Max Request
: 2
Operation Mode
: Single-Host
Port Control
: Auto
Intrusion Action
: Block traffic
Supplicant
: 00-00-00-00-00-00
Authenticator PAE State Machine
State
: Initialize
Reauth Count
: 0
Current Identifier : 0
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802.1x
Backend State Machine
State
: Initialize
Request Count
: 0
Identifier (Server) : 0
Reauthentication State Machine
State
: Initialize
show dot1x statistics
Syntax: show dot1x statistics interface ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
This command displays 802.1x statistics for a specified port, as shown in the following example.
Console# show dot1x statistics interface ethernet 1/12
Eth 1/12
Rx: EAPOL
Start
0
Last
EAPOLVer
0
EAPOL
Logoff
0
EAPOL
Invalid
0
EAPOL
Total
0
EAP
Resp/ID
0
EAP
EAP
Resp/Oth LenError
0
0
Last
EAPOLSrc
00-00-00-00-00-00
Tx: EAPOL
EAP
EAP
Total
Req/ID
Req/Oth
0
0
0
802.1X Supplicant is disabled on port 1/12
Configuration notes
• The client’s 802.1x MAC session establishes a relationship between the user name and the
MAC address used for authentication. If a user attempts to gain access from different clients
(with different MAC addresses), the user must be authenticated from each client.
• If a client has been denied access to the network (that is, the client’s 802.1x MAC session is
set to “access-denied”), then you can cause the client to be re-authenticated by manually
disconnecting the client from the network, or by using the dot1x re-authentication command.
• When a client has been denied access to the network, the 802.1x MAC session is aged out if
no traffic is received from the client’s MAC address over a fixed hardware aging period (300
seconds). You can optionally change the software aging period for 802.1x MAC sessions or
disable aging altogether. After the denied client’s 802.1x MAC session is aged out, traffic from
that client is no longer blocked, and the client can be re-authenticated.
• To implement 802.1x port security, at least one of the RADIUS servers identified to the Brocade
device must support the 802.1x standard.
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Port loop detection
Port loop detection
Brocade port loop detection allows the Brocade device to detect loops and disable a port that is on
the receiving end of a loop. A loop is detected by sending test packet BPDUs.
Port loop detection show commands
show spanning-tree
Syntax: show spanning-tree [interface]
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
port-channel channel-id (Range: 1-12)
This command displays the loop detection configuration, as shown in the following example.
Console# show spanning-tree ethernet 1/1
Eth 1/ 1 Information
-------------------------------------------------------------Admin Status
: Enabled
Role
: Root
State
: Forwarding
Admin Path Cost
: 0
Oper Path Cost
: 100000
Priority
: 128
Designated Cost
: 0
Designated Port
: 128.16
Designated Root
: 32768.0001ECF8D8C6
Designated Bridge
: 32768.0001ECF8D8C6
Forward Transitions
: 1
Admin Edge Port
: Auto
Oper Edge Port
: Disabled
Admin Link Type
: Auto
Oper Link Type
: Point-to-point
Flooding Behavior
: Enabled
Spanning-Tree Status
: Enabled
Loopback Detection Status
: Enabled
Loopback Detection Release Mode
: Auto
Loopback Detection Trap
: Disabled
Loopback Detection Action
: Block
Root Guard Status
: Disabled
BPDU Guard Status
: Disabled
BPDU Guard Auto Recovery
: Disabled
BPDU Guard Auto Recovery Interval : 300
BPDU Filter Status
: Disabled
Configuration notes
A port is disabled only if a packet is looped back to that same port. Loop detection must be
configured on the physical port.
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Port mirroring and monitoring
Port mirroring and monitoring
You can monitor the traffic on the Brocade ports by configuring another port to mirror the traffic on
the ports you want to monitor. The port thus configured is called a mirror port. By attaching a
protocol analyzer to the mirror port, you can observe the traffic on the monitored ports.
Port mirroring show commands
show port monitor
Syntax: show port monitor [interface | vlan vlan-id | mac-address mac-address]
interface - ethernet unit/port (source port)
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-12)
vlan-id - VLAN ID (Range: 1-4093)
mac-address - MAC address in the form of xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx.
This command displays the configuration settings for inbound or outbound traffic that is being
mirrored to each mirror port, as shown in the following example.
Console# show port monitor
Port Mirroring
------------------------------------Destination Port (listen port): Eth1/ 2
Source Port (monitored port) : Eth1/ 1
Mode
:RX
RADIUS
You can use a Remote Authentication Dial In User Service (RADIUS) server to secure the following
types of access to the Brocade devices:
•
•
•
•
Telnet access
SSH access
Web management access
Access to the Privileged Exec level and CONFIG level of the CLI
NOTE
The Brocade devices do not support RADIUS security for SNMP access.
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RADIUS
RADIUS show commands
show radius-server
Syntax: show radius-server
This command displays information about all RADIUS servers configured on the device.
Console# show radius-server
Remote RADIUS Server Configuration:
Global Settings:
Authentication Port Number
Accounting Port Number
Retransmit Times
Request Timeout
:
:
:
:
1812
1813
2
5
Server 1:
Server IP Address
Authentication Port Number
Accounting Port Number
Retransmit Times
Request Timeout
:
:
:
:
:
10.11.12.13
1812
1813
2
5
RADIUS Server Group:
Group Name
Member Index
------------------------- ------------radius
1
show users
Syntax: show users
This command displays the privilege level of all management interface users.
Console# show users
User Name Accounts:
User Name
Privilege Public-Key
-------------------------------- --------- ---------admin
15 None
guest
0 None
steve
15 RSA
Online Users:
Line
User Name
Idle time (h:m:s) Remote IP addr
------- -------------------------------- ----------------- --------------*console admin
0:00:00
SSH 0
admin
0:00:00 192.168.0.99
Web Online Users:
Line User Name
Idle time (h:m:s) Remote IP Addr
----- -------------------------------- ----------------- --------------HTTP admin
0:00:00 192.168.0.9
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SNMP
Configuration notes
• You must deploy at least one RADIUS server in your network to provide authentication services.
• Brocade devices support authentication using up to five RADIUS servers. The device tries to
use the servers in the order you add them to the device’s configuration. If one RADIUS server is
not responding, the Brocade device tries the next one in the list.
• You can use the authentication login command to select a sequence of authentication
methods for all types of access to a device (CLI through Telnet, CLI Exec and CLI Privileged Exec
levels). Use the authentication enable command to specify the sequence of authentication
methods to use when changing from Normal Exec command mode to Privileged Exec
command mode with the enable command.
• RADIUS command authorization can be performed only for commands entered from Telnet or
SSH sessions, or from the console. No authorization is performed for commands entered at
the Web management interface or for SNMP management applications.
SNMP
The Simple Network Management Protocol (SNMP) forms part of the Internet Protocol (IP) suite as
defined by the Internet Engineering Task Force (IETF). SNMP is used in network management
systems to monitor network-attached devices administration and management.
SNMP is enabled by default on Brocade devices. SNMP must be enabled in order to manage a
Brocade device using SNMP management applications.
SNMP show commands
show snmp
Syntax: show snmp
This command displays both the read-only and read-write community strings.
To display the SNMP community string, enter the following command.
Console# show snmp
SNMP Agent : Enabled
SNMP Traps :
Authentication : Enabled
Link-up-down
: Enabled
SNMP Communities :
1. public, and the access level is read-only
2. private, and the access level is read/write
0 SNMP packets input
0 Bad SNMP version errors
0 Unknown community name
0 Illegal operation for community name supplied
0 Encoding errors
0 Number of requested variables
0 Number of altered variables
0 Get-request PDUs
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SNMP
0 Get-next PDUs
0 Set-request PDUs
0 SNMP packets output
0 Too big errors
0 No such name errors
0 Bad values errors
0 General errors
0 Response PDUs
0 Trap PDUs
SNMP Logging: Disabled
show snmp engine-id
Syntax: show snmp engine-id
This command displays the engine ID of a switch, as shown in the following example.
Console# show snmp engine-id
Local SNMP Engine ID
: 80000103037072CF32DDFD0000
Local SNMP Engine Boots : 36
show snmp group
Syntax: show snmp group
This command displays the definition of all SNMP groups, as shown in the following example.
Console# show snmp group
Group Name
: public
Security Model : v1
Read View
: defaultview
Write View
: No writeview specified
Notify View
: No notifyview specified
Storage Type
: volatile
Row Status
: active
48
Group Name
Security Model
Read View
Write View
Notify View
Storage Type
Row Status
:
:
:
:
:
:
:
public
v2c
defaultview
No writeview specified
No notifyview specified
volatile
active
Group Name
Security Model
Read View
Write View
Notify View
Storage Type
Row Status
:
:
:
:
:
:
:
private
v1
defaultview
defaultview
No notifyview specified
volatile
active
Group Name
Security Model
Read View
Write View
Notify View
Storage Type
Row Status
:
:
:
:
:
:
:
private
v2c
defaultview
defaultview
No notifyview specified
volatile
active
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TACACS and TACACS+
show snmp user
Syntax: show snmp user
This command displays the definition of local and remote SNMP user accounts, as shown in the
following example.
Console# show snmp user
EngineId: 800000ca030030f1df9ca00000
User Name: steve
Authentication Protocol: md5
Privacy Protocol: des56
Storage Type: nonvolatile
Row Status: active
SNMP remote user
EngineId: 80000000030004e2b316c54321
User Name: mark
Authentication Protocol: mdt
Privacy Protocol: des56
Storage Type: nonvolatile
Row Status: active
Configuration notes
• SNMP read-only or read-write community strings are always required for SNMP access to the
device.
• SNMP access is enabled by default.
• If you do not enable Telnet access, you can access the CLI using a serial connection to the
console port. If you do not enable SNMP access, you will not be able to use or SNMP
management applications.
• For management access, you must configure authentication-method lists if you want the
device to authenticate access using local user accounts or a RADIUS server. Otherwise, the
device will authenticate using only the locally based password for the Administrator privilege
level.
TACACS and TACACS+
Terminal Access Controller Access Control System Plus (TACACS+) is an enhancement to the
TACACS security protocol. TACACS+ improves on TACACS by separating the functions of
authentication, authorization, and accounting (AAA) and by encrypting all the traffic between the
Brocade device and the TACACS+ server.
TACACS+ show commands
show tacacs-server
Syntax: show tacacs-server
This command displays information about all TACACS+ servers configured on the device.
Console# show tacacs-server
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TACACS and TACACS+
Remote TACACS+ Server Configuration:
Global Settings:
Server Port Number : 49
Retransmit Times
: 2
Timeout
: 5
Server 1:
Server IP Address
Server Port Number
Retransmit Times
Timeout
:
:
:
:
10.11.12.13
49
2
4
Tacacs Server Group:
Group Name
Member Index
------------------------- ------------tacacs+
1
show users
Syntax: show users
This command displays the privilege level of users of all management interfaces.
Console# show users
User Name Accounts:
User Name Privilege
--------- --------admin
15
guest
0
steve
15
Public-Key
---------None
None
RSA
Online Users:
Line
Username Idle time (h:m:s)
----------- -------- ----------------0 console
admin
0:14:14
* 1
VTY 0
admin
0:00:00
2
SSH 1
steve
0:00:06
Remote IP addr.
--------------192.168.1.19
192.168.1.19
Web Online Users:
Line
Remote IP Addr User Name Idle time (h:m:s)
----------- --------------- --------- -----------------1
HTTP
192.168.1.19
admin
0:00:00
Configuration notes
• You must deploy at least one TACACS or TACACS+ server in your network to provide
authentication services.
• The Brocade device supports authentication using one TACACS or TACACS+ server.
• You can use the authentication login command to select a sequence of authentication
methods for each type of access to a device (CLI through Telnet, CLI Normal Exec and CLI
Privileged Exec levels). Use the authentication enable command to specify the sequence of
authentication methods to use when changing from Normal Exec command mode to Privileged
Exec command mode with the enable command.
• TACACS+ provides for authentication, authorization, and accounting, but an implementation or
configuration is not required to employ all three.
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Telnet and SSH connections
• If you erase a tacacs-server host command (by entering the no form of the command), make
sure you also erase the authentication login commands that specify only TACACS or TACACS+
as an authentication method. Otherwise, when you exit from the CONFIG mode or from a Telnet
session, the system continues to believe that TACACS or TACACS+ is enabled and you will not
be able to access the system.
• TACACS+ command authorization can be performed only for commands entered from Telnet or
SSH sessions, or from the console. No authorization is performed for commands entered at
the Web management interface.
Telnet and SSH connections
The first time you log on to the console port, you must use a serial connection in order to assign an
IP address to the port. Once an IP address is assigned, you can access the CLI through a local
Telnet, SSH, or SNMP connection through the management port. When accessing the CLI through
Telnet, you may be prompted for a password. By default, the password required is the one you enter
for general access at initial setup.
NOTE
Telnet, Web, and SNMP servers are enabled by default, but can be disabled selectively. SSH is
disabled by default.
Telnet and SSH show commands
show ip telnet
Syntax: show ip telnet
This command shows you the Telnet configuration settings. Command output resembles the
following example.
Console# show ip telnet
IP Telnet Configuration:
Telnet Status: Enabled
Telnet Service Port: 23
Telnet Max Session: 8
Use the show users command to display the number of open Telnet sessions at any given time,
including information about each session.
Configuration notes
• You can use the authentication login command to select a sequence of authentication
methods for each type of access to a device (CLI through Telnet, CLI Normal Exel and CLI
Privileged Exec levels). Use the authentication enable command to specify the sequence of
authentication methods to use when changing from Normal Exec command mode to Privileged
Exec command mode with the enable command.
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SNTP
SNTP
The Simple Network Time Protocol (SNTP) server enables the device to synchronize its clock with
an upstream time server. The SNTP server also allows the Brocade device to function as an SNTP
server to its downstream clients.
SNTP show commands
show sntp
Syntax: show sntp
This command displays information about the SNTP server.
Console# show sntp
Current Time
: Nov 5 18:51:22 2006
Poll Interval : 16 seconds
Current Mode
: Unicast
SNTP Status
: Enabled
SNTP Server
: 137.92.140.80 0.0.0.0 0.0.0.0
Current Server : 137.92.140.80
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Chapter
7
Forwarding Diagnostics
This chapter describes diagnostics for forwarding protocols and environments on Brocade BR6910
series switches.
Trunking
Trunk groups are manually-configured aggregate links containing multiple ports. Trunk groups
enable load sharing of traffic, and they also provide redundant, alternate paths for traffic if any of
the segments fail.
Trunking show commands
Trunk group configuration information can be displayed.
show interfaces status port-channel
Syntax: show interfaces status port-channel channel-id
This command displays information about the interface settings and the operation status of a
trunk.
Console# show interfaces
Information of Trunk 1
Basic Information:
Port Type
MAC Address
Configuration:
Name
Port Admin
Speed-duplex
Capabilities
Broadcast Storm
Broadcast Storm Limit
Flow Control
VLAN Trunking
Port Security
Max MAC Count
Port Security Action
Current Status:
Created By
Link Status
Port Operation Status
Operation Speed-duplex
Up Time
Flow Control Type
Member Ports
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status port-channel 1
: 1000T
: 70-72-CF-32-DE-09
:
:
:
:
:
:
:
:
:
:
:
Up
Auto
10half, 10full, 100half, 100full, 1000full
Enabled
64 Kbits/second
Disabled
Disabled
Disabled
0
None
:
:
:
:
:
:
:
LACP
Up
Up
100full
0w 0d 0h 2m 37s (157 seconds)
None
Eth1/11, Eth1/12
53
Trunking
show lacp counters
Syntax: show lacp channel-id counters
This command displays information about the LACP packets sent and received by this trunk.
Command output resembles the following example.
Console# show lacp 1 counters
Port Channel : 1
-----------------------------------------------------------------------------Eth 1/11
-----------------------------------------------------------------------------LACPDUs Sent
: 36
LACPDUs Received
: 30
Marker Sent
: 0
Marker Received
: 0
LACPDUs Unknown Pkts : 0
LACPDUs Illegal Pkts : 0
...
show lacp internal
Syntax: show lacp channel-id internal
This command displays information about the configuration settings and the operational state for
the local side of this trunk.
Command output resembles the following example.
Console# show lacp 1 internal
Port Channel : 1
-----------------------------------------------------------------------------Oper Key : 3
Admin Key : 0
Eth 1/11
-----------------------------------------------------------------------------LACPDUs Internal
: 30 seconds
LACP System Priority : 32768
LACP Port Priority
: 32768
Admin Key
: 3
Oper Key
: 3
Admin State
: defaulted, aggregation, long timeout, LACP-activity
Oper State
: distributing, collecting, synchronization, aggregation,
long timeout, LACP-activity
...
show lacp neighbors
Syntax: show lacp channel-id neighbors
This command displays information about the configuration settings and the operational state for
the remote side of this trunk.
Command output resembles the following example.
Console# show lacp 1 neighbors
Port Channel 1 neighbors
-----------------------------------------------------------------------------Eth 1/11
-----------------------------------------------------------------------------Partner Admin System ID
: 32768, 00-00-00-00-00-00
Partner Oper System ID
: 32768, 00-E0-0C-00-00-FA
Partner Admin Port Number : 11
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Trunking
Partner Oper Port Number
Port Admin Priority
Port Oper Priority
Admin Key
Oper Key
Admin State
Oper State
:
:
:
:
:
:
3
32768
32768
0
3
defaulted, distributing, collecting,
synchronization, long timeout,
: distributing, collecting, synchronization,
aggregation, long timeout, LACP-activity
...
show lacp sysid
Syntax: show lacp sysid
This command displays a summary of the system priority and MAC address for all channel groups.
Command output resembles the following example.
Console# show lacp sysid
Port Channel
System Priority
System MAC Address
-----------------------------------------------------------------------------1
32768
70-72-CF-32-DD-FD
2
32768
70-72-CF-32-DD-FD
3
32768
70-72-CF-32-DD-FD
4
32768
70-72-CF-32-DD-FD
5
32768
70-72-CF-32-DD-FD
6
32768
70-72-CF-32-DD-FD
7
32768
70-72-CF-32-DD-FD
8
32768
70-72-CF-32-DD-FD
9
32768
70-72-CF-32-DD-FD
10
32768
70-72-CF-32-DD-FD
11
32768
70-72-CF-32-DD-FD
12
32768
70-72-CF-32-DD-FD
Configuration notes
There are several trunk group rules. For a full description of these trunking rules, refer to the
Brocade 6910 Ethernet Access Switch Configuration Guide.
• You can use both static trunk groups and 802.3ad trunking on the same device. However, you
can use only one type of trunking for a given port. For example, you can configure port 1/1 as
a member of a static trunk group or you can enable 802.3ad link aggregation on the port, but
you cannot do both.
• The ports in a trunk group make a single logical link. Therefore, all the ports in a trunk group
must be connected to the same device at the other end.
• If you connect physical cables before configuring the trunk groups and then reboot, traffic on
the ports can create a spanning tree loop.
Common diagnostic scenarios
Trunk transaction failed; ports overlap with other trunks.
With a static trunk, you must first remove the existing trunk and reconfigure a new one. If you are
using dynamic trunk configuration, you would be able to add a port dynamically in the trunk.
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55
Trunking
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Diagnostic Command Index
C
CFM
maintenance end point, 30
maintenance intermediate point, 30
M
maintenance end point, CFM, 30
maintenance intermediate point, CFM, 30
P
ping, 10
ping6, 10
S
show access-list, 37
show access-list tcam-utilization, 5
show alarm-status, 4
show dot1x, 41
show dot1x interface, 42
show dot1x statistics, 43
show interfaces brief, 14
show interfaces counters ethernet, 14
show interfaces status, 27
show interfaces status ethernet, 15
show interfaces status port-channel, 53
show interfaces switchport ethernet, 16
show interfaces transceiver, 9
show ip telnet, 51
show lacp counters, 54
show lacp internal, 25, 54
show lacp neighbors, 25, 54
show lacp sysid, 55
show log, 1
show mac-address-table, 20
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show memory, 7
show port monitor, 45
show process cpu, 6
show qos map cos-dscp, 38
show qos map dscp-mutation, 39
show qos map phb-queue, 39
show qos map trust-mode, 38
show queue mode, 40
show queue weight, 40
show radius-server, 46
show snmp, 47
show snmp engine-id, 48
show snmp group, 48
show snmp user, 49
show sntp, 52
show spanning-tree, 21, 44
show system, 3, 7
show tacacs-server, 49
show users, 46, 50
show version, 4
T
traceroute, 11
57
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