With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpimExtIfDRPriority
cpim Ext If DR Priority
1.3.6.1.4.1.9.10.120.1.1.1.1.13
The Designater Router Priority inserted into the DR priority option on this interface.
Back to CISCO-IETF-PIM-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cpimExtIfDRPriority 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.