Configuring QoS tokens

Because the upper layer protocol TCP provides traffic control, CQ and WFQ might become invalid during FTP transmission. QoS tokens can solve this problem. The token feature of QoS provides a flow control mechanism for underlying-layer queues. This feature can control the number of packets sent to the interface underlying-layer queues based on the number of tokens.

Hewlett Packard Enterprise recommends that you set the token number to 1 on an interface for FTP transmission.

If the upper layer protocol, UDP for example, does not provide flow control, do not use the QoS token function to improve data transmission efficiency.