With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
snaNodeOperActFailures
sna Node Operational Act Failures
1.3.6.1.2.1.34.1.1.3.1.15
This value identifies the number of failed Node activation attempts.
Back to SNA-NAU-MIB MIB page.
IPHost Network monitor allows you to monitor snaNodeOperActFailures 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.