With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnrNotifContestedIpAddress
cnr Notif Contested Ip Address
1.3.6.1.4.1.9.9.120.1.2.6
The IP address for which ownership is claimed by two or more DHCP servers.
Back to CISCO-NETWORK-REGISTRAR-MIB MIB page.
IPHost Network monitor allows you to monitor cnrNotifContestedIpAddress on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.