With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnSAQsNoResponseToMsgs
Cisco Ggsn Service-Aware Qs No Response To Messages
1.3.6.1.4.1.9.9.497.1.1.2.21
This object indicates the number of messages sent from QS, for which there is no response from the CSG after n3/t3 retransmission.
Back to CISCO-GGSN-SERVICE-AWARE-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnSAQsNoResponseToMsgs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.