With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cswmMvrfBiDirPimDfUsageGroup
cswm Mvrf Bi Dir Pim Df Usage Group
1.3.6.1.4.1.9.9.504.2.2.8
A collection of objects providing Bi-directional PIM Designated Forwarder database Usage information for each MVRF available on the device.
Back to CISCO-SWITCH-MULTICAST-MIB MIB page.
IPHost Network monitor allows you to monitor cswmMvrfBiDirPimDfUsageGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.