With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cHsrpExtSecAddrTable
Cisco Hot Standby Routing Protocol Ext Sec Address Table
1.3.6.1.4.1.9.9.107.1.1.2
A table containing information about secondary HSRP IP Addresses per interface and group.
Back to CISCO-HSRP-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cHsrpExtSecAddrTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.