With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vsiSessionPowerupId
vsi Session Powerup Id
1.3.6.1.4.1.9.9.162.1.2.1.12
ID supplied by the slave to identify the session at powerup. This is the initial value for vsiSessionActiveId, and its default is zero. Changes in vsiSessionActiveId signal a resync.
Back to CISCO-VSIMASTER-MIB MIB page.
IPHost Network monitor allows you to monitor vsiSessionPowerupId 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.