With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnHistNotifIndex
Cisco Ggsn History Notification Index
1.3.6.1.4.1.9.9.240.1.2.7.1.1
A monotonically increasing integer for the sole purpose of indexing notifications. When it reaches the maximum value, it wraps the value back to 1.
Back to CISCO-GGSN-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnHistNotifIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.