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Enable IS-IS on Router Interfaces



Enable reception and transmission of ISO protocol data units (PDUs) on each router interface in the network with the family statement, which identifies which protocol packets are accepted into the interfaces. For example, valid IS-IS packets are dropped if the interface is not configured with the family iso statement.


To configure support for IS-IS on router interfaces in your network, follow these steps:

  1. In configuration mode, go to the following hierarchy level:

  2. Configure IS-IS:

  3. Verify and commit the configuration:

Sample Output


The sample output shows that the interface so-0/0/2 is configured with IS-IS.