With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwUserGrpBytesSent
Cisco's ASN Gateway User Group Bytes Sent
1.3.6.1.4.1.9.9.638.1.3.4.1.1.10
Total number of bytes sent by this user group.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwUserGrpBytesSent on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.