With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipTgLlcStatsIFrameBytesOut
Cisco Channel Interface Processor Transmission Groups Llc Statistics I Frame Bytes Out
1.3.6.1.4.1.9.9.73.1.1.3.1.5
The number of LLC I-Frame bytes sent by this LLC connection TG to the remote network node.
Back to CISCO-CIPTG-MIB MIB page.
IPHost Network monitor allows you to monitor cipTgLlcStatsIFrameBytesOut 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.