With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGtpDroppedDataMsgs
Cisco GPRS Tunneling Protocol Dropped Data Messages
1.3.6.1.4.1.9.9.188.1.3.4.1.2
This object represents the number of GTP PDUs dropped for a specific SGSN path.
Back to CISCO-GTP-MIB MIB page.
IPHost Network monitor allows you to monitor cGtpDroppedDataMsgs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.