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Limiting access to adjacencies with a neighbor, Changing the is-is level on an interface – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Routing Configuration Guide

287

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Configuring ISIS properties on an interface

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.

Brocade(config)# interface ethernet 2/8

Brocade(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 260 explains how to change the IS-IS level

globally. By default, a Brocade device 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.

Brocade(config)# interface ethernet 2/8

Brocade(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.

Disabling and enabling hello padding on an interface

The section

“Globally disabling or re-enabling hello padding”

on page 264 explains what hello

padding is, why it is important and how to globally disable or enable it on a device. You can also
disable hello padding on a specific interface by entering commands such as the following.

Brocade(config)# interface ethernet 2/8

Brocade(config-if-e1000-2/8)# no isis hello padding

Syntax: [no] isis hello padding

By default, hello padding is enabled. Enter the no form of the command to disable hello padding.