With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnExtSentPdpUpdateReqs
cisco Gateway GPRS Support Node Ext Sent Pdp Update Request
1.3.6.1.4.1.9.9.647.1.1.3
This object indicates the total number of GGSN initiated update PDP context requests sent to SGSN.
Back to CISCO-GGSN-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnExtSentPdpUpdateReqs 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.