With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmsQuerierPortId
cms Querier Port Id
1.3.6.1.4.1.9.9.721.1.3.4
This object indicates the port identifier of the querier; that is the port through which the querier's queries are received on the system.
Back to CISCO-MLD-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor cmsQuerierPortId 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.