With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgkZoneIndex
Cisco Gatekeeper Zone Index
1.3.6.1.4.1.9.10.40.1.1.1.1.1
An unsigned integer value whose only significance is to uniquely identify the conceptual row. The value has no significance.
Back to CISCO-GATEKEEPER-MIB MIB page.
IPHost Network monitor allows you to monitor cgkZoneIndex 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.