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Configuring IS-IS Configuring IS-IS
OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007 page 3-21
To enable the authentication of PSNP PDUs globally, enter the following:
-> ip isis psnp-auth
Level Authentication
You can enable authentication and configure the authentication types for specific IS-IS levels globally
using ip isis level auth-type command. For example:
-> ip isis level 2 auth-type md5 encrypt-key 7a1e441a014b4030
The above example configures the authentication type as MD5 for level 2 IS-IS PDUs and the key.
Note. You can configure the authentication of either simple or MD5 type with the password specified
either in plain text or in encrypted form. For the explanations about the authentication types and the key
types refer Simple authentication and MD5 authentication.
IS-IS authentication can be enabled for specific IS-IS PDUs such as Hello, CSNP, and PSNP packets at
specific IS-IS levels (Level-1, Level-2, or Level-1/2). Enabling authentication on specific IS-IS levels
over-rides the global authentication.
To enable the authentication of Hello PDUs for IS-IS Level-1, enter the following:
-> ip isis level 1 hello-auth
To enable the authentication of CSNP PDUs for IS-IS Level-2, enter the following:
-> ip isis level 2 csnp-auth
To enable the authentication of PSNP PDUs for IS-IS Level-2, enter the following:
-> ip isis level 2 psnp-auth
Interface Authentication
IS-IS authentication can be enabled for Hello packets on specific interfaces using ip isis interface hello-
auth-type.
For example, to enable MD5 authentication of Hello PDUs on the interface VLAN 100, enter the follow-
ing:
-> ip isis interface vlan-100 hello-auth-type md5 key 12345
IS-IS authentication can also be enabled for Hello packets at different levels on specific interfaces using ip
isis interface hello-auth-type.
For example, to enable simple authentication of Hello PDUs on the interface VLAN 100 at Level-2, enter
the following:
-> ip isis interface vlan-100 level 2 hello-auth-type simple encrypt-key
7a1e441a014b4030