With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rmRingStatus
rm Ring Status
1.3.6.1.4.1.224.5.2
This variable indicates the curent ring status.
Back to LANOPTICS-RING-MANAGER-MIB MIB page.
IPHost Network monitor allows you to monitor rmRingStatus on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.