SonicOSX 7 Profile Objects
QoS Mapping
The primary objective of QoS Mapping is to allow 802.1p tags to persist across non-802.1p compliant links (for example, WAN links) by mapping them to corresponding DSCP tags before sending across the WAN link, and then mapping from DSCP back to 802.1p upon arriving at the other side, as shown in the below figure.
Mapping will not occur until you assign Map as an action of the QoS view of an Access Rule. The mapping table only defines the correspondence that will be employed by an Access Rule’s Map action.
For example, according to the default table, an 802.1p tag with a value of 2 will be outbound mapped to a DSCP value of 16, while a DSCP tag of 43 will be inbound mapped to an 802.1 value of 5.
Each of these mappings can be reconfigured. If you wanted to change the outbound mapping of 802.1p tag 4 from its default DSCP value of 32 to a DSCP value of 43, you can click the Configure icon for 4 and select the new To DSCP value from the drop-down box:
You can restore the default mappings by clicking the Reset option.
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