Allied Telesis AT-S63 - Manual (Page 258)

Chapter 18: Quality of Service (QoS) Commands
258 Section I: Basic Features
DELETE QOS POLICY
Syntax
delete qos policy= value trafficclasslist= values
Parameter
policy Specifies the ID number of the policy you want to
modify. You can modify only one policy at a time.
trafficclasslist Specifies the IDs of the traffic classes you want to
remove from the policy. Separate multiple traffic class
with commas (e.g., 4,11,12). (The online help for this
command includes a NONE option for this parameter.
Specifying the NONE option does not remove any traffic
classes. Since the purpose of this command is to
remove traffic classes from a policy, it is unlikely you
would ever use that option.)
Description
This command removes traffic classes from policies.
Example
This command removes traffic class 17 from policy 1:
delete qos policy=1 trafficclasslist=17