With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcNameServerEntry
fc Name Server Entry
1.3.6.1.4.1.9.9.293.1.1.4.1
An entry (conceptual row) in the fcNameServerTable. This contains information about an Nx_Port represented by fcNameServerPortIdentifier for a particular VSAN identified by vsanIndex.
Back to CISCO-NS-MIB MIB page.
IPHost Network monitor allows you to monitor fcNameServerEntry 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.