With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cHsrpExtIfStandbyDestAddr
Cisco Hot Standby Routing Protocol Ext If Standby Destination Address
1.3.6.1.4.1.9.9.107.1.1.3.1.3
This object specifies the destination IP address of the standby router.
Back to CISCO-HSRP-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cHsrpExtIfStandbyDestAddr 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.