Allied Telesis AT-S62 - Manual (Page 324)

Chapter 20: Quality of Service (QoS) Commands
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DELETE QOS FLOWGROUP
Syntax
delete qos flowgroup=integer
classifierlist=integers
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