With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkLZoneStatsSentUnregistrationRejects
Cisco Gatekeeper L Zone Stats Sent Unregistration Rejects
1.3.6.1.4.1.9.10.40.1.1.4.4.1.7
The number of Unregistration Rejects sent for the local zone.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkLZoneStatsSentUnregistrationRejects 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.