Burst Thresholds

The CBWFQ algorithm has two burst thresholds that you can set. Both of thresholds are set in a number of bytes.

• Normal burst--This threshold sets the maximum size burst that is guaranteed transfer. Bursts that are smaller than this size are guaranteed transfer. Bursts that are larger than this size are either serviced by WFQ or dropped (whichever action that you specify). The default setting is servicing by WFQ and the default weight for the queues. Normal burst size can range from 0 to 15,000 bytes.
• Maximum burst--This threshold sets the maximum size burst that is serviced by WFQ once the normal burst has been exceeded. Bursts that are smaller than this size are serviced by WFQ. Bursts that are larger than this size are dropped. If you set this threshold to the same value as normal burst, the maximum burst capability is disabled. The maximum burst can range from the normal burst size to 15,000.