With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
faReasonUnspecified
fa Reason Unspecified
1.3.6.1.2.1.44.1.5.3.4
Total number of Registration Requests denied by foreign agent -- reason unspecified (Code 64).
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IPHost Network monitor allows you to monitor faReasonUnspecified 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.