Upon importing device topology from IP Availability Manager, Network Protocol Manager for IS-IS performs its own discovery on the devices to gather IS-IS topology information. It models this information as logical IS-IS topology objects in its repository, and maps the IS-IS topology to the underlying physical-transport topology discovered by IP Availability Manager.

Network Protocol Manager for IS-IS monitors the availability of the IS-IS objects in its repository by:

  • Subscribing to certain device, card, interface, and network-connection status updates from IP Availability Manager.

  • Monitoring the status of the IS-IS objects through:

    • SNMP polling.

    • CLI polling.