With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPimIfTable
Cisco Pim If Table
1.3.6.1.4.1.9.10.119.1.1.2
The (conceptual) table listing the router's PIM interfaces. Along with PIM IGMP or MLD is enabled on all interfaces listed in this table.
Back to CISCO-IETF-PIM-MIB MIB page.
IPHost Network monitor allows you to monitor cPimIfTable 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.