With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfcmInstanceFabricId
Fibre Channel Management Instance Fabric Id
1.3.6.1.4.1.9.10.999999.1.1.1.9
The globally unique Fabric Identifier which identifies the fabric to which the Fibre Channel entity/entities managed by this management instance are connected, or, of which they are a part. This is typically the Node WWN of the principal switch of a Fibre Channel fabric. The zero-length string indicates that the fabric identifier is unknown (or not applicable).
Back to CISCO-FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cfcmInstanceFabricId 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.