Allied Telesis AT-S63 - Manual (Page 328)

Chapter 20: Quality of Service (QoS) Commands
328 Section II: Advanced Operations
DELETE QOS FLOWGROUP
Syntax
delete qos flowgroup= value classifierlist= values
Parameter
flowgroup Specifies the ID number of the flow group you want to
modify. You can modify only one flow group at a time.
classifierlist Specifies the classifiers you want to remove from the flow
group. Separate multiple classifiers 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 classifiers. Since the purpose
of this command is to remove classifiers from a flow group,
it is unlikely you would ever use that option.)
Description
This command removes classifiers from a flow group.
Example
This command removes classifier 6 from flow group 22:
delete qos flowgroup=22 classifierlist=6