With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vsanIfVsan
vsan If Vsan
1.3.6.1.4.1.9.9.282.1.2.5.1.1
Index of the VSAN to which this interface is statically assigned.
Back to CISCO-VSAN-MIB MIB page.
IPHost Network monitor allows you to monitor vsanIfVsan on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.