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Cisco IOS in a Nutshell, 2nd Edition by James Boney

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Name

isis authentication send-only — interface

Synopsis

isis authentication send-only [level-1 | level-2]
no isis authentication send-only [level-1 | level-2]

Configures

Authentication for IS-IS routing

Default

Disabled

Description

This command tells the interface that only outgoing IS-IS packets are authenticated. Normally, when authentication is configured for IS-IS, both incoming and outgoing packets are authenticated. The keywords level-1 and level-2 specify that only packets sent from level-1 or level-2 routers must be authenticated.

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