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Bandwidth management is the process of measuring and controlling the communications (traffic, packets) on a network link, to avoid filling the link to capacity or overfilling the link, which would result in network congestion and poor performance of the network. Bandwidth management is measured in bits per second (bit/s) or bytes per second (B/s). == Bandwidth management mechanisms and techniques == Bandwidth management mechanisms may be used to further engineer performance and includes: * Traffic shaping (rate limiting): * * Token bucket * * Leaky bucket * * TCP rate control - artificially adjusting TCP window size as well as controlling the rate of ACKs being returned to the sender * Scheduling algorithms: * * Weighted fair queuing (WFQ) * * Class based weighted fair queuing * * Weighted round robin (WRR) * * Deficit weighted round robin (DWRR) * * Hierarchical Fair Service Curve (HFSC) * Congestion avoidance: * * RED, WRED - Lessens the possibility of port queue buffer tail-drops and this lowers the likelihood of TCP global synchronization * * Policing (marking/dropping the packet in excess of the committed traffic rate and burst size) * * Explicit congestion notification * * Buffer tuning * Bandwidth reservation protocols / algorithms * * Resource reservation protocol (RSVP) * * Constraint-based Routing Label Distribution Protocol (CR-LDP) * * Top-nodes algorithm * Traffic classification - categorising traffic according to some policy in order that the above techniques can be applied to each class of traffic differently 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「bandwidth management」の詳細全文を読む スポンサード リンク
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