With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cisVlanIgmpSnoopingEnabled
Cisco IGMP Snooping Vlan Igmp Snooping Enabled
1.3.6.1.4.1.9.9.263.1.4.1.1.2
When this object is set to 'true' IGMP Snooping is enabled on this VLAN else disabled.
Back to CISCO-IGMP-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cisVlanIgmpSnoopingEnabled 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.