Allied Telesis AT-S63 - Manual (Page 330)

Chapter 20: Quality of Service (QoS) Commands
330 Section II: Advanced Operations
DELETE QOS TRAFFICCLASS
Syntax
delete qos trafficclass= value flowgrouplist= values
Parameter
flowgroup Specifies the ID number of the traffic class you want to
modify. You can modify only one traffic class at a time.
flowgrouplist Specifies the IDs of the flow groups you want to remove
from the traffic class. Separate multiple flow groups 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 flow
groups. Since the purpose of this command is to
remove flow groups from a traffic class, it is unlikely you
would ever use that option.)
Description
This command removes flow groups from traffic classes.
Example
This command removes flow group 5 from traffic class 22:
delete qos trafficclass=22 flowgrouplist=5