With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cGgsnSACsgStatsInboundOctets
Cisco Ggsn Service-Aware Content Services Gateway Stats Inbound Octets
1.3.6.1.4.1.9.9.497.1.1.1.16.1.4
The aggregate number of echo request, echo response, and node alive messages received in terms of octets.
Back to CISCO-GGSN-SERVICE-AWARE-MIB MIB page.
IPHost Network monitor allows you to monitor cGgsnSACsgStatsInboundOctets 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.