With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dspuNodeRsrbVirtualMacAddress
Cisco DSPU Node Rsrb Virtual Mac Address
1.3.6.1.4.1.9.9.24.1.1.5
Virtual MAC address of the the DSPU node. VirtualMacAddress is zero if RSRB is not enabled.
Back to CISCO-DSPU-MIB MIB page.
IPHost Network monitor allows you to monitor dspuNodeRsrbVirtualMacAddress 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.