With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cagwGlobalStatisticsGroupRev2
Cisco's ASN Gateway Global Statistics Group Rev2
1.3.6.1.4.1.9.9.638.2.2.16
These objects describe the statistics of the ASN GW.
Back to CISCO-ASN-GATEWAY-MIB MIB page.
IPHost Network monitor allows you to monitor cagwGlobalStatisticsGroupRev2 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.