The following task configures IS-IS authentication mode, an IS-IS authentication key, and temporarily disables IS-IS authentication checking for Level 2 packets on an IS-IS Ethernet interface.
Procedure
-
Enter the
configure terminal command to access global configuration mode.
device# configure terminal
-
Enter the
interface ethernet command and specify an interface.
device(config)# interface ethernet 1/2
-
Enter the
isis auth-mode command with the
md5 and
level-2 parameters to configure MD5 authentication for Level 2 packets for the IS-IS interface.
device(conf-if-eth-1/2)# isis auth-mode MD5 level-2
-
Enter the
isis auth-key command with the
level-2 parameter, specifying an authentication password, to configure an authentication key for Level 2 packets for the IS-IS interface.
device(conf-if-eth-1/2)# isis auth-key level-2 mykey
-
Enter the
isis auth-check disable command with the
level-1 parameter to temporarily disable authentication checking for Level 1 and Level 2 packets for the IS-IS interface.
device(conf-if-eth-1/2)# isis auth-check level-1 disable
Example
The following example configures IS-IS authentication mode, an IS-IS authentication key and temporarily disables IS-IS authentication checking for a specified IS-IS interface.
device# configure terminal
device(config)# interface ethernet 1/2
device(conf-if-eth-1/2)# isis auth-mode MD5 level-2
device(conf-if-eth-1/2)# isis auth-key level-2 mykey
device(conf-if-eth-1/2)# isis auth-check level-1 disable
