With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
clrHAStatsHeartBeatTimeoutMismatches
clr HA Stats Heart Beat Timeout Mismatches
1.3.6.1.4.1.9.9.650.1.2.2.1.5
Each HB packet contains the configured interval in the packet. When a peer receives a HB packet, it checks to see if the interval in the HB packet matches the interval configured locally. This object indicates the number of HB that the local device received from the remote peer with a mismatched HB interval.
Back to CISCO-L4L7MODULE-REDUNDANCY-MIB MIB page.
IPHost Network monitor allows you to monitor clrHAStatsHeartBeatTimeoutMismatches 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.