With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcNameServerInRegReqs
fc Name Server In Reg Reqs
1.3.6.1.4.1.9.9.293.1.2.2.1.3
The total number of Registration Requests received by the local switch on this VSAN.
Back to CISCO-NS-MIB MIB page.
IPHost Network monitor allows you to monitor fcNameServerInRegReqs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.