With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dspuNodeRsrbTargetVirtualRing
Cisco DSPU Node Rsrb Target Virtual Ring
1.3.6.1.4.1.9.9.24.1.1.4
Target virtual ring number used for RSRB. TargetVirtualRing is zero if RSRB is not enabled.
Back to CISCO-DSPU-MIB MIB page.
IPHost Network monitor allows you to monitor dspuNodeRsrbTargetVirtualRing 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.