With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtRPMappingChangeNotifEnabled
cpim Ext RP Mapping Change Notification Enabled
1.3.6.1.4.1.9.10.120.1.1.14
An indication of whether the ciscoIetfPimExtRPMappingChange notification is enabled.
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtRPMappingChangeNotifEnabled on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.