With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtIfEntry
cpim Ext If Entry
1.3.6.1.4.1.9.10.120.1.1.1.1
An entry (conceptual row) in the cpimExtIfTable. Each entry represents multicast related interface configuration and operational states. An interface can have more than one type of Inet address family enabled and there will be one entry per interface and address family version
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtIfEntry 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.
