Planet XGS3-42000R User Manual page 166

Classi fication: Classify traffic according to packet classification information and generate internal DSCP
value based on the classification information. For different packet types and switch configurations,
classification is performed differently; the flowchart below ex plains this in detail.
Figure 17-1-4 Classification process
Policing and remark: Each packet in classified ingress traffic is assigned an internal DS CP value and can be
policed and remarked.
Policing can be performed based on DSCP value to configure different policies that allocate bandwidth to
classified traffic. If the traffic exceeds the bandwidth set in the policy (out-of-profile), the out of profile traffic
can be allowed, discarded or remarked. Remarking uses a new DS CP value of lower priority to replace the
original higher level DS CP value in the packet; this is also called Marking Down. The following flowchart
describes the operations during policing and remarking.
17-3