With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvsVSLOperationalPortCount
cvs VSL Operational Port Count
1.3.6.1.4.1.9.9.388.1.3.1.1.6
The number of operational ports for this VSL.
Back to CISCO-VIRTUAL-SWITCH-MIB MIB page.
IPHost Network monitor allows you to monitor cvsVSLOperationalPortCount 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.