QoS Configuration
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Note 2: Allow Trust DSCP and Trust COS to be configured at the same time, the priority is
as follows: DSCP>COS.
Policing and remark:
Each packet in classified ingress traffic is assigned an internal
priority value, and can be policed and remarked.
Policing can be performed based on the flow to configure different policies that
allocate bandwidth to classified traffic, the assigned bandwidth policy may be single
bucket dual color or dual bucket three color. The traffic, will be assigned with different
color, can be discarded or passed, for the passed packets, add the remarking action.
Remarking uses a new Int-Prio value of lower priority to replace the original higher level
Int-Prio value in the packet. COS and DSCP fields will be modifed according to the new
Int-Prio at the egress. The following flowchart describes the operations.