I have a problem with service checks ISIS state via SNMP OID: .22.214.171.124.126.96.36.199.188.8.131.52 on Juniper devices.
Because, when ISIS adjacency DOWN ⇒ service reports “Unknow”, like below:
I checked on device and relized one adjacency is gone. I think that’s reason of service “Unknow”
This is result of all ISIS adjacency UP
This is result of one ISIS adjacency DOWN:
Thank for reading!