With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgmGdoiGmKekIpProtocol
Cisco GDOI Management Gdoi Gm Kek Ip Protocol
1.3.6.1.4.1.9.9.759.1.3.2.1.11
The value of the IP protocol ID (e.g. UDP/TCP) being used for the rekey datagram.
Back to CISCO-GDOI-MIB MIB page.
IPHost Network monitor allows you to monitor cgmGdoiGmKekIpProtocol 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.