With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parConnCos
par Connection Cos
1.3.6.1.4.1.351.130.3.1.1.23
This object specifies the COS for the connection.
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parConnCos 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.