auth-mode

Specifies the type of authentication used in Intermediate System-to-Intermediate System (IS-IS) packets globally.

Syntax

auth-mode md5 { level-1 | level-2 }

no auth-mode md5 { level-1 | level-2 }

Command Default

Disabled.

Parameters

md5: Specifies Message Digest 5 (MD5) authentication.
level-1: Specifies Level 1 packets only.
level-2: Specifies Level 2 packets only.

Modes

IS-IS router configuration mode

Usage Guidelines

IS-IS is supported on the Extreme 8820, SLX 9740, SLX 9640, and SLX 9540 devices only.

The no form of the command removes the configured authentication mode. The authentication key must be removed using the no auth-key command before removing the configured authentication mode. If the authentication mode is reset for the specified level, the authentication key must also be reset.

Examples

The following example specifies that MD5 authentication is performed on Level 1 packets.

device# configure terminal
device(config)# router isis
device(config-isis-router)# auth-mode md5 level-1

The following example specifies that MD5 authentication is performed on Level 2 packets.

device# configure terminal
device(config)# router isis
device(config-isis-router)# auth-mode md5 level-2