With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pnniSummaryAddressEntry
pnni Summary Address Entry
1.3.6.1.4.1.353.5.4.1.1.20.1
An entry in the table, containing summary address prefix information in this switching system.
Back to PNNI-MIB MIB page.
IPHost Network monitor allows you to monitor pnniSummaryAddressEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.