With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
notifyVsanIndex
notify Vsan Index
1.3.6.1.4.1.9.9.282.1.1.4
The ID of the VSAN. This object is to be used only as an object in the notification. We cannot use the vsanIndex in a notification as it is defined to not-accessible in the vsanTable.
Back to CISCO-VSAN-MIB MIB page.
IPHost Network monitor allows you to monitor notifyVsanIndex 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.