auth-check

Disables Intermediate System-to-Intermediate System (IS-IS) authentication checking globally.

Syntax

auth-check { level-1 | level-2 } disable

no auth-check { level-1 | level-2 }

IS-IS authentication checking is enabled by default.

IS-IS router configuration mode

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

The no form of the command re-enables IS-IS authentication checking globally.

The following example disables IS-IS authentication checking for Level 1 packets.

device# configure terminal
device(config)# router isis
device(config-isis-router)# auth-check level-1 disable

The following example re-enables IS-IS authentication checking for Level 1 packets.

device# configure terminal
device(config)# router isis
device(config-isis-router)# no auth-check level-1

The following example disables IS-IS authentication checking for Level 2 packets.

device# configure terminal
device(config)# router isis
device(config-isis-router)# auth-check level-2 disable