With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniMapIndex
pnni Map Index
1.3.6.1.4.1.353.5.4.1.1.14.1.3
An index into the set of link and nodal connectivity associated with the originating node and port. This index is needed since there may be multiple entries for nodal connectivity from a specific node and port pair, in addition to any entry for a horizontal link or uplink.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniMapIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.