Limiting access to adjacencies with a neighbor, Changing the is-is level on an interface – Brocade BigIron RX Series Configuration Guide User Manual

Page 1044

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BigIron RX Series Configuration Guide

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Configuring ISIS properties on an interface

29

NOTE

You can set the IS-IS priority on an individual interface basis only. You cannot set the priority globally.

To set the IS-IS priority on an interface, enter commands such as the following.

BigIron RX(config)# interface ethernet 2/8

BigIron RX(config-if-e1000-2/8)# isis priority 127

This command sets the IS-IS priority on port 1/1 to 127. Since the command does not specify
Level-1 or Level-2, the new priority setting applies to both IS-IS levels.

Syntax: [no] isis priority <num> [level-1 | level-2]

The <num> parameter specifies the priority and can be from 0 – 127. A higher numeric value
means a higher priority. The default is 64.

The level-1 | level-2 parameter applies the priority to Level-1 only or Level-2 only. By default, the
priority is applied to both levels.

Limiting access to adjacencies with a neighbor

In addition to limiting access to an area (level-1) or domain (level-2), you can limit access to forming
an IS-IS adjacency on a specific interface by entering a password at the interface configuration
level. To enter this password, enter a command such as the following.

BigIron RX(config)# interface ethernet 2/8

BigIron RX(config-if-e1000-2/8)# isis password my-password

Syntax: [no] isis password <string>

The <string> parameter specifies the password. You can enter an alphanumeric string up to 80
characters long. The password can contain blank spaces. If you use a blank space in the password,
you must use quotation marks (“ “) around the entire password; for example, isis password “admin
2”.

Changing the IS-IS level on an interface

The section

“Changing the IS-IS Level globally”

on page 954 explains how to change the IS-IS level

globally. By default, a BigIron RX can operate as both a Level-1 and IS-IS Level-2 router. You can
change the IS-IS type on an individual interface to be Level-1 only or Level-2 only. You also can
reset the type to both Level-1 and Level-2.

NOTE

If you change the IS-IS type on an individual interface, the type you specify must also be specified
globally. For example, if you globally set the type to Level-2 only, you cannot set the type on an
individual interface to Level-1. The software accepts the setting but the setting does not take effect.

To change the IS-IS type on a specific interface, enter commands such as the following.

BigIron RX(config)# interface ethernet 2/8

BigIron RX(config-if-e1000-2/8)# isis circuit-type level-1

Syntax: [no] isis circuit-type level-1 | level-1-2 | level-2

The level-1 | level-1-2 | level-2 parameter specifies the IS-IS type. If you want to re-enable support
for both IS-IS types, re-enter the command you entered to change the IS-IS type, and use “no” in
front of the command.

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