With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pimRPSetComponent
pim RP Set Component
1.3.6.1.3.61.1.1.6.1.6
A number uniquely identifying the component. Each protocol instance connected to a separate domain should have a different index value.
Back to PIM-MIB MIB page.
IPHost Network monitor allows you to monitor pimRPSetComponent on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.
