With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csfRecordCrankBackPortId
Cisco ATM Signaling Failures Record Crank Back Port Id
1.3.6.1.4.1.9.9.78.1.3.1.1.17
When the csfRecordCrankBackTransitType object value is 'blockedLink', this object identifies a logical port of the blocked link's preceeding node identifier. The distinguished value zero indicates that no port is specified. For all values of csfRecordCrankBackTransitType other than 'blockedLink', this object is set to zero.
Back to CISCO-ATM-SIG-DIAG-MIB MIB page.
IPHost Network monitor allows you to monitor csfRecordCrankBackPortId 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.