With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cggsnQosNormalMeanThroughput
Cisco Gateway GPRS Support Node Qos Normal Mean Throughput
1.3.6.1.4.1.9.9.241.1.2.6
The sum of the mean throughput of normal class QOS users on the GSN. This object can only be retrieved if cggsnQosMappingMethod is set to canonical(2).
Back to CISCO-GGSN-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor cggsnQosNormalMeanThroughput 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.