With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtBidirDFEntry
cpim Ext Bidir DF Entry
1.3.6.1.4.1.9.10.120.1.1.6.1
An entry (conceptual row) in the cpimExtBidirDFTable. Each entry represents details about DF winner for each RP per interface.
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtBidirDFEntry 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.