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Verify That IS-IS Adjacencies Are Established
Purpose
After configuring IS-IS, you must verify that neighboring routers have formed adjacencies with each other.
Action
To verify IS-IS adjacencies, enter the following Junos OS command-line interface (CLI) operational mode command:
user@host> show isis adjacency
Sample Output
user@R1> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R2 2 Up 25 so-0/0/1.0 R5 2 Up 23 so-0/0/2.0 R3 2 Up 20 user@R3> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R4 2 Up 25 so-0/0/1.0 R2 2 Up 25 so-0/0/2.0 R1 2 Up 26 so-0/0/3.0 R6 2 Up 25 user@R6> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R5 2 Up 19 so-0/0/1.0 R4 2 Up 22 so-0/0/2.0 R2 2 Up 22 so-0/0/3.0 R3 2 Up 19
Sample Output
user@R1> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R2 2 Up 25 so-0/0/1.0 R5 2 Up 23 so-0/0/2.0 R3 2 Up 20 user@R3> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R4 2 Up 25 so-0/0/1.0 R2 2 Up 25 so-0/0/2.0 R1 2 Up 26 so-0/0/3.0 R6 2 Up 25 user@R6> show isis adjacency Interface System L State Hold (secs) SNPA so-0/0/0.0 R5 2 Up 19 so-0/0/1.0 R4 2 Up 22 so-0/0/2.0 R2 2 Up 22 so-0/0/3.0 R3 2 Up 19
Meaning
The sample output from the ingress, transit, and egress routers shows that all routers in the network shown in MPLS Network Topology have formed IS-IS adjacencies.
