3. Enable IS-IS on Router Interfaces

Purpose

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.

Action

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:

[edit]

user@host# edit interfaces

2. Configure IS-IS:

[edit interfaces]

user@host# set type-fpc/pic/port unit number family iso

3. Verify and commit the configuration:

user@host# show

user@host# commit 

Sample Output

user@R1> edit

Entering configuration mode

edit]

user@R1# edit interfaces

[edit interfaces]

user@R1# set so-0/0/2 unit 0 family iso 

[edit interfaces]

userR1# show 

[...Output truncated...]

so-0/0/2 {

    unit 0 {

        family inet {

            address 10.1.13.1/30;

        }

        family iso;

    }

}

[edit interfaces]

user@R1# commit 

commit complete

What It Means

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