With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vmMembershipSummaryExtEntry
vm Membership Summary Ext Entry
1.3.6.1.4.1.9.9.68.1.2.3.1
An entry (conceptual row) in the vmMembershipSummaryExtTable.
Back to CISCO-VLAN-MEMBERSHIP-MIB MIB page.
IPHost Network monitor allows you to monitor vmMembershipSummaryExtEntry 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.