With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkZoneSubnetRowStatus
Cisco Gatekeeper Zone Subnet Row Status
1.3.6.1.4.1.9.10.40.1.1.2.1.5
The row status of the entry. New rows are created using 'createAndGo' and deleted using 'destroy'. Once 'active' this object may be set to only 'destroy' and only cgkZoneSubnetFlags may be modified.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkZoneSubnetRowStatus 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.