Quality of Service (QoS): Managing Bandwidth More Effectively

Differentiated Services Codepoint (DSCP) Mapping

Message

Meaning

Cannot modify DSCP Policy < codepoint > - in

You have attempted to map a QoS classifier to

use by other qos rules.

a codepoint that is already in use by other QoS

 

classifiers. Before remapping the codepoint

 

to a new priority, you must reconfigure the

 

other QoS classifiers so that they do not use

 

this codepoint. You can have multiple QoS

 

classifiers use this same codepoint as long as

 

it is acceptable for all such classifiers to use

 

the same priority.

 

 

Table 5-10. Error Messages Generated by DSCP Policy Changes

Example of Changing the Priority Setting on a Policy

When One or More Classifiers Are Currently Using the Policy

Suppose that codepoint 000001 is in use by one or more classifiers. If you try to change its priority, you see a result similar to the following:

Figure 5-17. Example of Trying To Change the Priority on a Policy In Use by a Classifier

In this case, you would use steps similar to the following to change the priority.

1.Identify which classifiers use the codepoint you want to change.

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