With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sdlcPortOperLastFailTime
sdlc Port Operational Last Fail Time
1.3.6.1.2.1.41.1.1.2.1.12
This object describes the value of sysUpTime when this SDLC port last failed. If the port has not failed, then this value shall be zero.
Back to SNA-SDLC-MIB MIB page.
IPHost Network monitor allows you to monitor sdlcPortOperLastFailTime on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.