With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ctxResourceUnavailTrans
ctx Resource Unavail Trans
1.3.6.1.4.1.9.9.758.1.3.1.1.2
This object specifies a counter that increments when the resource transitions to unreachable or failed state from another state. The management entity can use this to track the operational stability of the resource.
Back to CISCO-TELEPRESENCE-EXCHANGE-SYSTEM-MIB MIB page.
IPHost Network monitor allows you to monitor ctxResourceUnavailTrans 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.