With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtNbrSecAddressTable
cpim Ext Neighbor Sec Address Table
1.3.6.1.4.1.9.10.120.1.1.3
The (conceptual) table listing the Secondary InetAddresses advertised by each PIM neighbor (on a subset of the rows of the cPimNbrTable defined in CISCO-IETF-PIM-MIB).
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtNbrSecAddressTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.