With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cPimInetMRouteAssertRPTBit
Cisco Pim Inet M Route Assert RPT Bit
1.3.6.1.4.1.9.10.119.1.1.4.1.4
The value of the RPT-bit advertised by the assert winner on the upstream interface, or false if no such assert is in effect.
Back to CISCO-IETF-PIM-MIB MIB page.
IPHost Network monitor allows you to monitor cPimInetMRouteAssertRPTBit 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.