With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rmTRLastErrorType
rm TR Last Error Type
1.3.6.1.4.1.224.5.49
This var contains the error type of the last Token-Ring error, depending on the error class
Back to LANOPTICS-RING-MANAGER-MIB MIB page.
IPHost Network monitor allows you to monitor rmTRLastErrorType on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.