Because the standards-based IS-IS MIB is used by Juniper devices but not by Cisco devices, Network Protocol Manager for IS-IS uses:
SNMP discovery and SNMP polling to discover and monitor the IS-IS topology for Juniper devices.
CLI discovery and CLI polling to discover and monitor the IS-IS topology for Cisco devices.
The CLI commands that are invoked for IS-IS discovery are identified in the VMware Smart Assurance Network Protocol Manager Discovery Guide Supplement, and the CLI commands that are invoked for IS-IS monitoring are described in this section.
Network Protocol Manager for IS-IS establishes Telnet, SSH1, or SSH2 sessions to the Cisco devices and invokes the following CLI command:
show clns neighbors detail
The command provides the target device’s CLNS neighbor interface connections (neighbor IP addresses).