With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
faHAAuthenticationFailure
fa HA Authentication Failure
1.3.6.1.2.1.44.1.5.3.15
Total number of Registration Replies denied by foreign agent -- home agent failed authentication (Code 68).
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IPHost Network monitor allows you to monitor faHAAuthenticationFailure on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.