With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoIfExtUtilizationGroup
cisco If Ext Utilization Group
1.3.6.1.4.1.9.9.276.2.2.6
A collection of objects containing information about utilization rates of interfaces.
Back to CISCO-IF-EXTENSION-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoIfExtUtilizationGroup 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.