# 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 adjacencyInterface 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 adjacencyInterface 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 adjacencyInterface 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 adjacencyInterface 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 adjacencyInterface 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 adjacencyInterface 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 have formed IS-IS adjacencies.