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AT-S63 Management Software Features Guide
Section II: Advanced Operations 147
QoS Policy Guidelines
Following is a list of QoS policy guidelines:
A classifier may be assigned to many flow groups. However, assigning
a classifier more than once within the same policy may lead to
undesirable results. A classifier may be used successfully in many
different policies.
A flow group must be assigned at least one classifier but may have
many classifiers.
A flow group may be assigned to only one traffic class.
A traffic class may have many flow groups.
A traffic class may only be assigned to one policy.
A policy may have many traffic classes.
A policy may be assigned to many ports.
A port may only have one policy.
You can create a policy without assigning it to a port, but the policy will
be inactive.
A policy must have at least one action defined in the flow group, traffic
class, or the policy itself. A policy without an action is invalid.
A Quality of Service policy and an access control list can coexist on the
same port only if they have different classifiers.
The switch can store up to 64 flow groups.
The switch can store up to 64 traffic classes.
The switch can store up to 64 policies.