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Global configuration level, Address family configuration level, Figure 36 – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

Page 739: Diagrams

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Multi-Service IronWare Routing Configuration Guide

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IS-IS CLI levels

FIGURE 36

IPv6 IS-IS CLI levels

The IPv6 IS-IS CLI levels are as follows:

A global level for the configuration of the IS-IS protocol. At this level, all IS-IS configurations at
this level apply to IPv4 and IPv6. You enter this layer using the router isis command.

Under the global level, you specify an address family. Address families separate the IS-IS
configuration IPv6 and IPv4. You enter configurations that are for a specific You enter this
level by entering the address-family command at the router IS-IS level.

Under the address family level, you select a sub-address family, which is the type of routes
for the configuration. For IS-IS, you specify unicast.

An interface level

Global configuration level

You enter the global configuration level of IS-IS by entering the following command:

Brocade(config)#router isis

Brocade(config-isis-router)#

Syntax: router isis

The (config-isis-router)# prompt indicates that you are at the global level for IS-IS. Configurations
you enter at this level apply to both IS-IS IPv4 and IS-IS IPv6.

Address family configuration level

The implementation of IPv6 IS-IS includes a new configuration level: address family. You enter IS-IS
definitions for IPv6 IS-IS under this level. Address-family allows you to create configurations for IPv6
IS-IS unicast routes that are separate and distinct from configurations for IPv4 IS-IS unicast routes.

Under the address family level, Brocade devices support the unicast address family configuration
level only. The device enters the IPv6 IS-IS unicast address family configuration level when you
enter the following command while at the global IS-IS configuration level:

Brocade(config-isis-router)# address-family ipv6 unicast

Brocade(config-isis-router-ipv6u)#

Syntax: address-family ipv6 unicast

The (config-isis-router-ipv6u)# prompt indicates that you are at the IPv6 IS-IS unicast address
family configuration level. While at this level, you can access several commands that allow you to
configure IPv6 IS-IS unicast routes.