With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkZoneLocalZone
Cisco Gatekeeper Zone Local Zone
1.3.6.1.4.1.9.10.40.1.1.1.1.7
If this gatekeeper manages the zone, then this value is 'true' otherwise it is false.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkZoneLocalZone 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.