With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniMapAddrAdvertisingNodeId
pnni Map Address Advertising Node Id
1.3.6.1.4.1.353.5.4.1.1.16.1.1
The node ID of a node advertising reachability to the address prefix.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniMapAddrAdvertisingNodeId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.