Policy Configuration : Overview of Switching

Configuring DSCP Mapping
You can configure the DSCP mapping by setting the priority levels for DSCP values 0 through 63. The Switching > Layer 2 QoS page also provides a Reset DSCP Remap button to reset the priority levels back to the default, which is “Normal.”
To configure DSCP mapping, complete the following steps:
1
To show the DSCP Remap table, click Hide/Show next to the DSCP Remap Table heading. The priority settings for all DSCP values, 0 - 63, are displayed.
 
2
3
Click Apply. The DSCP Remap table is hidden, but if you show it again you will see the updated priority settings.
4
To reset all DSCP mapping back to the default, Normal, click Reset DSCP Remap and then click OK in the confirmation dialog box.