With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csqExpToDscpEntry
Cisco Switch QOS Exp To Dscp Entry
1.3.6.1.4.1.9.9.580.1.2.3.1
Each row contains the mapping from a EXP value to a DSCP value.
Back to CISCO-SWITCH-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor csqExpToDscpEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.