Use the default port QoS level to assign a default QoS level for all traffic, if the packet does not match an access control list (ACL) to remark the packet.
 
Procedure
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In the navigation tree, expand the following folders: .
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Click Port QoS Config.
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In the row for the port, double-click the cell in the QosLevel column.
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Select the new level.
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Click Apply.