With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cisRobustnessVariable
Cisco IGMP Snooping Robustness Variable
1.3.6.1.4.1.9.9.263.1.1.18
Specifies the Robustness Variable of this device. This value will be used at each VLAN if the corresponding instance of cisVlanRobustnessVariable is not configured.
Back to CISCO-IGMP-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cisRobustnessVariable 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.