With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniMapNodeTable
pnni Map Node Table
1.3.6.1.4.1.353.5.4.1.1.15
A list of nodes as seen from the perspective of a local node. The pnniMapNodeTable contains all information learned by the local node from nodal information PTSEs. This entire object is read-only, reflecting the fact that the map is discovered dynamically during operation of the PNNI protocol rather than configured.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniMapNodeTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.