KB.15.15

Example 166 Changing the priority of a codepoint

If codepoint 000001 is currently mapped to priority 6, and several global QoS policies use this

codepoint to assign a priority to their respective types of matching traffic, you can change the

priority associated with the codepoint using the following procedure.

1. Identify the global and classifier-based QoS policies that use the codepoint.

2. Do one of the following:

a. Reconfigure each QoS policy by re-entering a different DSCP codepoint or a different

802.1p priority associated with the codepoint.

b. Enter the no qos classifier or no policy qos-policy command to remove the

current DSCP policy with codepoint 000001 and reset the priority to No-override.

3. Use the qos dscp-map 000001 priority 0 - 7 command to remap DSCP 000001

to the desired priority.

4. Do one of the following:

a. Reconfigure codepoint 000001 in the QoS policies in which you want to use the new

DSCP-priority mapping to mark matching packets.

b. Leave a QoS policy in which you use DSCP 000001 to mark matching packets with the

associated No-override priority mapping.

Error messages for DSCP policy changes

See the error messages in the following table to troubleshoot an error condition that results from

reconfiguring a DSCP policy.

258 Quality of Service: Managing bandwidth effectively