Dell PowerConnect B-RX User manual

53-1001810-01
January 31, 2010
53-1001810-01
*53-1001810-01*
BigIron RX
Configuration Guide
Supporting Multi-Service IronWare v02.7.02

ii BigIron RX Configuration Guide
53-1001810-01
Notes, Cautions, and Warnings
NOTE
A NOTE indicates important information that helps you make better use of your computer.
CAUTION
See the safety and regulatory information that shipped with your system. For additional regulatory
information, see the Regulatory Compliance Homepage on www.dell.com at the following location:
www.dell.com/regulatory_compliance.
CAUTION
A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed.
DANGER
A DANGER indicates a potential for property damage, personal injury, or death.
____________________
Information in this document is subject to change without notice.
© 2009 Dell Inc. All rights reserved.
Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, Inspiron, Dell Precision, Dimension, OptiPlex, Latitude, PowerEdge, PowerVault, PowerApp, Dell
OpenManage and the YOURS IS HERE logo are trademarks of Dell Inc.; Intel, Pentium, and Celeron are registered trademarks of Intel Corporation
in the U.S. and other countries; Microsoft, Windows,Windows Server,MS-DOS and Windows Vista are either trademarks or registered trademarks
of Microsoft Corporation in the United States and/or other countries.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products.
Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Regulatory Model Codes: Brocade DCX-4S, Brocade DCX

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Contents
About This Document
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xli
Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xli
Supported hardware and software . . . . . . . . . . . . . . . . . . . . . . . . . . xli
List of supported features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xlii
Unsupported features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xliv
What’s new in this document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xlv
Enhancements and configuration notes in release 02.7.02 . . xlv
Enhancements and configuration notes in release 02.7.01 . xlvi
Enhancements and configuration notes in release 02.7.00 . xlvi
Enhancements and configuration notes in release 02.6.00 xlviii
Enhancements and configuration notes in patch release 02.5.00cl
Enhancements and configuration notes in patch release 02.5.00bli
Summary of enhancements and configuration notes in release
02.5.00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . li
Summary of enhancements and configuration notes in patch release
02.4.00c. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .lii
Summary of enhancements and configuration notes in release
02.4.00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . liii
Summary of enhancements in patch release 02.3.00a. . . . . . lvii
Summary of enhancements and configuration notes in release
02.3.00. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lviii
Summary of enhancements and configuration notes in 02.2.01lxiii
Summary of enhancements in release 02.2.00g . . . . . . . . . . lxvii
Summary of enhancements and configuration notes in 02.2.00lxviii
Document conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .lxix
Text formatting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxix
Command syntax conventions . . . . . . . . . . . . . . . . . . . . . . . . . lxix
Notes, cautions, and danger notices . . . . . . . . . . . . . . . . . . . . lxix
Notice to the reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxx
Related publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxx
Getting technical help or reporting errors . . . . . . . . . . . . . . . . . . . . . lxx
Web access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxxi
E-mail access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxxi
Telephone access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lxxi
Chapter 1 Getting Started with the Command Line Interface
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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Logging on through the CLI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
On-line help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Command completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Scroll control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Line editing commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EXEC commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Global level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CONFIG commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Accessing the CLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Navigating among command levels . . . . . . . . . . . . . . . . . . . . . . . 8
CLI command structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Searching and filtering output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Allowable characters for LAG names . . . . . . . . . . . . . . . . . . . . . 14
Syntax shortcuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Saving configuration changes. . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Chapter 2 Getting Familiar With the BigIron RX Series Switch Management
Applications
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
How to manage BigIron RX Series switch . . . . . . . . . . . . . . . . . . . . . 17
Logging on through the CLI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
On-line help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Command completion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Scroll control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Line editing commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Searching and filtering output from CLI commands . . . . . . . . . 19
Allowable characters for LAG names . . . . . . . . . . . . . . . . . . . . . 23
Logging on through the Web Management Interface . . . . . . . . . . . . 24
Web Management Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Logging on through IronView Network Manager . . . . . . . . . . . . . . . . 26
Chapter 3 Using a Redundant Management Module
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
How management module redundancy works . . . . . . . . . . . . . . . . . 27
Management module redundancy overview . . . . . . . . . . . . . . . 27
Management module switchover . . . . . . . . . . . . . . . . . . . . . . . . 28
Switchover implications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Management module redundancy configuration . . . . . . . . . . . . . . . 31
Changing the default active Chassis slot . . . . . . . . . . . . . . . . . . 31
Managing management module redundancy . . . . . . . . . . . . . . . . . . 31
File synchronization between the active and standby management
modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Manually switching over to the standby management module 34
Rebooting the active and standby management modules . . . . 34

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Monitoring management module redundancy . . . . . . . . . . . . . . . . . 35
Determining management module status . . . . . . . . . . . . . . . . . 35
Displaying temperature information . . . . . . . . . . . . . . . . . . . . . . 36
Displaying switchover information . . . . . . . . . . . . . . . . . . . . . . . 36
Flash memory and PCMCIA flash card file management commands38
Management focus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Flash memory file system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
PCMCIA flash card file system. . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Wildcards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Formatting a flash card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Determining the current management focus. . . . . . . . . . . . . . . 42
Switching the management focus . . . . . . . . . . . . . . . . . . . . . . . 43
Displaying a directory of the files . . . . . . . . . . . . . . . . . . . . . . . . 43
Displaying the contents of a file . . . . . . . . . . . . . . . . . . . . . . . . .45
Displaying the hexadecimal output of a file . . . . . . . . . . . . . . . . 46
Creating a subdirectory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Removing a subdirectory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Renaming a file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Changing the read-write attribute of a file . . . . . . . . . . . . . . . . . 49
Deleting a file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Recovering (“undeleting”) a file . . . . . . . . . . . . . . . . . . . . . . . . . 51
Appending a file to another file. . . . . . . . . . . . . . . . . . . . . . . . . .52
Copying files using the copy command . . . . . . . . . . . . . . . . . . . 52
Copying files using the cp command . . . . . . . . . . . . . . . . . . . . . 57
Loading the software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Saving configuration changes. . . . . . . . . . . . . . . . . . . . . . . . . . . 59
File management messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Chapter 4 Securing Access to Management Functions
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Securing access methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Restricting remote access to management functions . . . . . . . . . . .63
Using ACLs to restrict remote access . . . . . . . . . . . . . . . . . . . . 63
Restricting remote access to the device to specific IP addresses66
Specifying the maximum number of login attempts for Telnet access
68
Restricting remote access to the device to specific VLAN IDs . 68
Disabling specific access methods. . . . . . . . . . . . . . . . . . . . . . . 69
Setting passwords. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Setting a Telnet password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Setting passwords for management privilege levels . . . . . . . . . 72
Recovering from a lost password . . . . . . . . . . . . . . . . . . . . . . . . 74
Displaying the SNMP community string . . . . . . . . . . . . . . . . . . . 74
Disabling password encryption . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Specifying a minimum password length. . . . . . . . . . . . . . . . . . . 75
Setting up local user accounts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Configuring a local user account . . . . . . . . . . . . . . . . . . . . . . . . 76

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Configuring SSL security for the Web Management Interface. . . . . 78
Enabling the SSL server on the device. . . . . . . . . . . . . . . . . . . . 78
Importing digital certificates and RSA private key files. . . . . . . 79
Generating an SSL certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Configuring TACACS/TACACS+ security . . . . . . . . . . . . . . . . . . . . . . . 80
How TACACS+ differs from TACACS. . . . . . . . . . . . . . . . . . . . . . . 80
TACACS/TACACS+ authentication, authorization, and accounting80
TACACS/TACACS+ configuration considerations . . . . . . . . . . . . 84
Enabling SNMP to configure TACACS/TACACS . . . . . . . . . . . . . . 85
Identifying the TACACS/TACACS+ servers. . . . . . . . . . . . . . . . . . 85
Specifying different servers for individual AAA functions . . . . .86
Setting optional TACACS/TACACS+ parameters. . . . . . . . . . . . . 86
Configuring authentication-method lists for TACACS/TACACS+ 88
Configuring TACACS+ authorization . . . . . . . . . . . . . . . . . . . . . . 89
Configuring TACACS+ accounting . . . . . . . . . . . . . . . . . . . . . . . . 92
Configuring an interface as the source for all TACACS/TACACS+
packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Displaying TACACS/TACACS+ statistics and configuration information
95
Configuring RADIUS security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
RADIUS authentication, authorization, and accounting . . . . . .96
RADIUS configuration considerations. . . . . . . . . . . . . . . . . . . . . 99
RADIUS configuration procedure . . . . . . . . . . . . . . . . . . . . . . . . 99
Configuring Brocade-specific attributes on the RADIUS server100
Enabling SNMP to configure RADIUS . . . . . . . . . . . . . . . . . . . .101
Identifying the RADIUS server to the BigIron RX . . . . . . . . . . .101
Specifying different servers for individual AAA functions . . . .102
Setting RADIUS parameters . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Configuring authentication-method lists for RADIUS. . . . . . . .103
Configuring RADIUS authorization . . . . . . . . . . . . . . . . . . . . . .104
Configuring RADIUS accounting . . . . . . . . . . . . . . . . . . . . . . . .106
Configuring an interface as the source for all RADIUS packets107
Displaying RADIUS configuration information . . . . . . . . . . . . .108
Configuring authentication-method lists . . . . . . . . . . . . . . . . . . . . .109
Configuration considerations for authentication-method lists110
Examples of authentication-method lists. . . . . . . . . . . . . . . . .111
Chapter 5 Configuring Basic Parameters
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Entering system administration information . . . . . . . . . . . . . . . . . .114
Configuring Simple Network Management Protocol(SNMP) traps.114
Specifying an SNMP trap receiver . . . . . . . . . . . . . . . . . . . . . .115
Specifying a Single trap source. . . . . . . . . . . . . . . . . . . . . . . . .115
Setting the SNMP Trap holddown time. . . . . . . . . . . . . . . . . . .116
Disabling SNMP traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Disabling Syslog messages and traps for CLI access . . . . . . .117
Configuring an interface as the source for all Telnet packets . . . .118
Cancelling an outbound Telnet session . . . . . . . . . . . . . . . . . .119

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Configuring an interface as the source for all TFTP packets . . . . .119
Configuring an interface as the source for Syslog packets . . . . . .120
Specifying a Simple Network Time Protocol (SNTP) server . . . . . .121
Setting the system clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .122
New Daylight Saving Time (DST) . . . . . . . . . . . . . . . . . . . . . . . .124
Configuring CLI banners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Setting a message of the day banner. . . . . . . . . . . . . . . . . . . .124
Setting a privileged EXEC CLI level banner . . . . . . . . . . . . . . .125
Displaying a message on the console when an incoming Telnet
session is detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Configuring terminal display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126
Checking the length of terminal displays . . . . . . . . . . . . . . . . .126
Enabling or disabling routing protocols . . . . . . . . . . . . . . . . . . . . . .126
Displaying and modifying system parameter default settings . . . .127
Enabling or disabling Layer 2 switching . . . . . . . . . . . . . . . . . . .129
CAM partitioning for the BigIron RX . . . . . . . . . . . . . . . . . . . . . . . . .130
Re-distributing CAM allocations . . . . . . . . . . . . . . . . . . . . . . . .130
Nexthop table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
Changing the MAC age time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Configuring static ARP entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Chapter 6 Configuring Interface Parameters
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Assigning a port name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Assigning an IP address to a port . . . . . . . . . . . . . . . . . . . . . . . . . .134
Speed/Duplex negotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Disabling or re-enabling a port . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Changing the default Gigabit negotiation mode . . . . . . . . . . . . . . .136
Changing the negotiation mode . . . . . . . . . . . . . . . . . . . . . . . .136
Disabling or re-enabling flow control . . . . . . . . . . . . . . . . . . . . . . . .136
Specifying threshold values for flow control . . . . . . . . . . . . . .137
Locking a port to restrict addresses . . . . . . . . . . . . . . . . . . . . . . . .137
Wait for all cards feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Port transition hold timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Port flap dampening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Modifying port priority (QoS). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
Assigning a mirror port and monitor ports . . . . . . . . . . . . . . . . . . .140
Configuration guidelines for monitoring traffic . . . . . . . . . . . . 141
Configuring port mirroring and monitoring. . . . . . . . . . . . . . . . 141
Monitoring an individual trunk port . . . . . . . . . . . . . . . . . . . . . . . . .142

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Mirror ports for Policy-Based Routing (PBR) traffic. . . . . . . . . . . . .143
About hardware-based PBR . . . . . . . . . . . . . . . . . . . . . . . . . . .143
Configuring mirror ports for PBR traffic . . . . . . . . . . . . . . . . . .143
Displaying mirror and monitor port configuration. . . . . . . . . . . . . .144
Enabling WAN PHY mode support . . . . . . . . . . . . . . . . . . . . . . . . . .144
Chapter 7 Configuring IP
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Overview of configuring IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
The IP packet flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146
ARP cache table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Static ARP table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
IP Route table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
IP forwarding cache . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .149
Basic IP parameters and defaults . . . . . . . . . . . . . . . . . . . . . . . . . .149
When parameter changes take effect . . . . . . . . . . . . . . . . . . .149
IP global parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
IP interface parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .152
Configuring IP parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .153
Configuring IP addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .154
Changing the network mask display to prefix format . . . . . . .156
Configuring the default gateway . . . . . . . . . . . . . . . . . . . . . . . .157
GRE IP tunnel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157
IPv6 over IPv4 tunnels in hardware . . . . . . . . . . . . . . . . . . . . .162
Configuring Domain Name Server (DNS) resolver. . . . . . . . . .166
Adding host names to the DNS cache table . . . . . . . . . . . . . .167
Configuring packet parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Changing the encapsulation type . . . . . . . . . . . . . . . . . . . . . . . 171
Setting maximum frame size per PPCR . . . . . . . . . . . . . . . . . .172
Changing the MTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Changing the router ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Specifying a single source interface for Telnet, TACACS/TACACS+,
or RADIUS packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
Configuring an interface as the source for Syslog packets . . . . . .177
IP fragmentation protection . . . . . . . . . . . . . . . . . . . . . . . . . . .178
IP option attack protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
IP receive access list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Configuring ARP parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
How ARP works. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
Rate limiting ARP packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
Applying a rate limit to ARP packets on an interface. . . . . . . .181
Clearing the rate limit for ARP packets. . . . . . . . . . . . . . . . . . .182
Changing the ARP aging period. . . . . . . . . . . . . . . . . . . . . . . . .182
Creating a floating static ARP entry . . . . . . . . . . . . . . . . . . . . .184
Static route ARP validation check. . . . . . . . . . . . . . . . . . . . . . .185

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Configuring forwarding parameters . . . . . . . . . . . . . . . . . . . . . . . . .186
Disabling ICMP messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188
Disabling ICMP redirect messages . . . . . . . . . . . . . . . . . . . . . .190
Configuring static routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191
Static route tagging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196
Configuring a default network route . . . . . . . . . . . . . . . . . . . . .200
Configuring IP load sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . .201
Default route ECMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204
IP receive access list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205
Configuring IRDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .206
Configuring UDP broadcast and IP helper parameters . . . . . .208
Configuring BootP/DHCP forwarding parameters . . . . . . . . . .211
Displaying IP information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213
Displaying IP interface information. . . . . . . . . . . . . . . . . . . . . .215
Displaying interface name in Syslog. . . . . . . . . . . . . . . . . . . . .216
Displaying ARP entries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Displaying the forwarding cache. . . . . . . . . . . . . . . . . . . . . . . .219
Displaying the IP route table . . . . . . . . . . . . . . . . . . . . . . . . . . .220
Clearing IP routes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .223
Displaying IP traffic statistics . . . . . . . . . . . . . . . . . . . . . . . . . .223
Displaying TCP traffic statistics. . . . . . . . . . . . . . . . . . . . . . . . .226
Chapter 8 Link Aggregation
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229
Link aggregation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .229
LAG formation rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230
LAG load sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
Hash based load sharing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .232
Migration from a pre-02.6.00 trunk or LACP configuration . . . . . .233
Configuration of a LAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .234
Creating a Link Aggregation Group (LAG) . . . . . . . . . . . . . . . .235
Deploying a LAG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237
Commands available under LAG once it is deployed . . . . . . .238
Configuring ACL-based mirroring. . . . . . . . . . . . . . . . . . . . . . . .238
Disabling ports within a LAG . . . . . . . . . . . . . . . . . . . . . . . . . . .239
Enabling ports within a LAG . . . . . . . . . . . . . . . . . . . . . . . . . . .239
Monitoring an individual LAG port . . . . . . . . . . . . . . . . . . . . . .239
Assigning a name to a port within a LAG . . . . . . . . . . . . . . . . .240
Enabling sFlow forwarding on a port within a LAG. . . . . . . . . .240
Setting the sFlow sampling rate for a port within a LAG . . . . .240
Displaying LAG information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Displaying LAG statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .245
Chapter 9 Configuring LLDP
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Terms used in this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

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LLDP overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248
Benefits of LLDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .248
General operating principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .249
LLDP packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
TLV support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .250
MIB support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
Syslog messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
Configuring LLDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
Configuration notes and considerations . . . . . . . . . . . . . . . . .254
Enabling and disabling LLDP. . . . . . . . . . . . . . . . . . . . . . . . . . .254
Changing a port’s LLDP operating mode . . . . . . . . . . . . . . . . .255
Specifying the maximum number of LLDP neighbors . . . . . . .256
Enabling LLDP SNMP notifications and Syslog messages . . .257
Specifying the minimum time between SNMP traps and Syslog
messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .257
Changing the minimum time between LLDP transmissions . .258
Changing the interval between regular LLDP transmissions .258
Changing the holdtime multiplier for transmit TTL . . . . . . . . .259
Changing the minimum time between port reinitializations. .259
LLDP TLVs advertised by the Brocade device . . . . . . . . . . . . .260
Displaying LLDP statistics and configuration settings. . . . . . .266
LLDP configuration summary . . . . . . . . . . . . . . . . . . . . . . . . . .266
LLDP statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .267
LLDP neighbors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268
LLDP neighbors detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269
LLDP configuration details . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Resetting LLDP statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272
Chapter 10 Configuring Uni-Directional Link Detection (UDLD)
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273
Configuration considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Configuring UDLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Changing the keepalive interval . . . . . . . . . . . . . . . . . . . . . . . . 274
Changing the keepalive retries . . . . . . . . . . . . . . . . . . . . . . . . .275
Displaying UDLD information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275
Displaying information for all ports. . . . . . . . . . . . . . . . . . . . . .275
Displaying link-keepalive information . . . . . . . . . . . . . . . . . . . .275
Displaying information for a single port . . . . . . . . . . . . . . . . . .277
Clearing UDLD statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .278
Chapter 11 VLANs
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .279
Overview of Virtual Local Area Networks (VLANs). . . . . . . . . . . . . .279
Tagged, untagged, and dual-mode ports . . . . . . . . . . . . . . . . .279
Protocol-based VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .281