PLANET XGS3-24040 - Manual (Page 154)

Chapter 17 Qos Configuration
17-3
Classification: 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 explains this in detail.
Figure 1-4 Classification process
Policing and remark: Each packet in classified ingress traffic is assigned an internal DSCP 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 DSCP value of lower priority to replace the
original higher level DSCP value in the packet; this is also called Marking Down. The following flowchart
describes the operations during policing and remarking.