With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cisMcastGroupTable
Cisco IGMP Snooping Mcast Group Table
1.3.6.1.4.1.9.9.263.1.7.1
Table containing multicast group address information for IGMP Snooping.
Back to CISCO-IGMP-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cisMcastGroupTable 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.