With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnExtPdpNonExistentMsgs
cisco Gateway GPRS Support Node Ext Pdp Non Existent Messages
1.3.6.1.4.1.9.9.647.1.1.14
This object indicates the total number of PDP non-existent messages sent from the GGSN.
Back to CISCO-GGSN-EXT-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnExtPdpNonExistentMsgs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.