With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vismSvcRxConns
vism Svc Rx Conns
1.3.6.1.4.1.351.110.5.5.10.7
This is the number of Connect messages received by the VISM from the PXM since VISM reset.
Back to CISCO-VISM-SVC-MIB MIB page.
IPHost Network monitor allows you to monitor vismSvcRxConns on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.