ISIS protocol can form adjacencies with the neighbors in two scenarios over the interfaces.

1. Adjacency over point-to-point interfaces
2. Adjacency over point-to-multipoint interfaces

With Open-Config telemetry subscription, adjacency over point-to-multipoint interface will not be reported as part of point-to-point adjacency.

 

To View the point-to-multipoint adjacency state, On Juniper routers, the leaf lan-adjacency-state can be used. 

The above leaf is not a Open Config defined leaf, rather its Juniper augmented leaf.

The leaf's are :

adjacency-state  <<<< used to report p2p interface isis adjacency state
lan-adjacency-state  <<< used to report p2mp interface isis adjacency state