With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cportQosDscpEgressOctets
cport Qos Dscp Egress Octets
1.3.6.1.4.1.9.9.189.1.3.8.1.5
This object indicates the number of egress octets whose DSCP value matched the value of the cportQosDscpValue object.
Back to CISCO-PORT-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor cportQosDscpEgressOctets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.