3Com CoreBuilder 3500, Руководство по внедрению, Страница: 510 / 592

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Modifying and
Removing
Classifiers and
Controls
You can modify or remove a previously defined classifier or control. When
modifying or removing a classifier, you specify the classifier number;
when modifying removing a control, you specify the control number.
You may want to modify a classifier to alter source/destination
information (flow classifier) or change IEEE 802.1p values (nonflow
classifier). You may want to modify a control to specify a different service
level (queue) or rate limit.
Important
Considerations
Before modifying or removing classifiers or controls, review these
guidelines:
■
You cannot remove the default classifier or the default control, but
you can modify the default control. You can modify other predefined
classifiers and the predefined controls (for example, if you want to
redefine the handling of Business Critical traffic, which is associated
with predefined control 3).
■
Once you apply a control to a classifier, you must remove the control
for a classifier before you can modify or remove the classifier.
■
When you remove a control, the associated classifiers are no longer
controlled and no longer have a rate limit, service level, or 802.1p tag.
■
If you want to modify a classifier that has several address/port
definitions, you must supply them again during the modification
process. If you do not reenter them, the system deletes these
definitions.
■
If you want to modify a control that uses a rate-limit type of aggregate
or receivePort with several rate-limit values, you can change one
rate-limit value without affecting the other defined rate-limit values.