With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pimInterfaceIfIndex
pim Interface If Index
1.3.6.1.3.61.1.1.2.1.1
The ifIndex value of this PIM interface.
Back to PIM-MIB MIB page.
IPHost Network monitor allows you to monitor pimInterfaceIfIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.