COMPUTER NETWORKS - II

Token bucket shaping

Posted by AJ × 08:10

*The token bucket is a control mechanism that dictates when traffic can be transmitted, based on the presence of tokens in the bucket--an abstract container that holds aggregate network traffic to be transmitted.

* The bucket contains tokens, each of which can represent a unit of bytes or a single packet of predetermined size.

* Tokens in the bucket are removed ("cashed in") for the ability to send a packet.

* The network administrator specifies how many tokens are needed to transmit how many bytes.

* When tokens are present, a flow is allowed to transmit traffic.

* If there are no tokens in the bucket, a flow cannot transmit its packets

* Therefore, a flow can transmit traffic up to its peak burst rate if there are adequate tokens in the bucket and if the burst threshold is configured appropriately.