With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGtpPathVersion
Cisco GPRS Tunneling Protocol Path Version
1.3.6.1.4.1.9.9.188.1.2.7.1.4
This object represents the GTP version of the path identified by cGtpPathEntry. The value: version0 - represents GTP version0 and version1 - represents GTP version1.
Back to CISCO-GTP-MIB MIB page.
IPHost Network monitor allows you to monitor cGtpPathVersion on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.