With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
portChannelLastActionStatusCause
port Channel Last Action Status Cause
1.3.6.1.4.1.9.9.285.1.1.1.1.7
The cause of failure to last operation (add or remove a member) done to change the member list of a Port Channel port. This object will be zero length string if 'portChannelLastActionStatus' is successful(1).
Back to CISCO-PORT-CHANNEL-MIB MIB page.
IPHost Network monitor allows you to monitor portChannelLastActionStatusCause on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.