Note on changing a priority setting
If a QoS classifier is using a policy (codepoint and associated priority) in the DSCP Policy table, you must delete or change this usage before you can change the priority setting on the codepoint. Otherwise the switch blocks the change and displays this message:
Cannot modify DSCP Policy < codepoint > - in use by other
qos rules.
In this case, use
show qos
<classifier>
to identify the specific classifiers using the policy you want to change; that is:
show qos device-priority
show qos port-priority
show qos tcp-udp-port-priority
show qos vlan-priority
show qos type-of-service
Identify which QoS classifiers use the codepoint.
Change the classifier configurations by assigning them to a different DSCP policy, or to an 802.1p priority, or to
No-override
.Reconfigure the desired priority for the 000001 (dscp 1) codepoint.
Either reassign the classifiers to the 000001 (dscp 1) codepoint policy or leave them as they were after step 2, above.