With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csc Rdr Dest Status
This object indicates the status of this RDR destination. 'other' : None of the following. 'active' : The reports are sent to this destination. 'standby': This destination is a backup. Only one RDR destination can be 'active' if the cscRdrFormatterForwardingMode is set to either 'redundancy' or 'simpleLoadBalancing'. Multiple RDR destinations can be in 'active' state when cscRdrFormatterForwardingMode is set to 'multicast'.
Back to CISCO-SERVICE-CONTROL-RDR-MIB MIB page.
IPHost Network monitor allows you to monitor cscRdrDestStatus on Cisco device via the SNMP protocol.
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Easy monitoring of cscRdrDestStatus with IPHost tools