With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
pimRPEntry
pim RP Entry
1.3.6.1.3.61.1.1.5.1
An entry (conceptual row) in the pimRPTable. There is one entry per RP address for each IP multicast group.
Back to PIM-MIB MIB page.
IPHost Network monitor allows you to monitor pimRPEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.