With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
diffServMappingEntry
diff Serv Mapping Entry
1.3.6.1.4.1.3646.1300.2.16.2.2.1
Mapping between 802.1p CoS and DSCP.
Back to ASKEY-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor diffServMappingEntry on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link routers right now.