Method, device and network device for limiting bandwidth
A technology of network equipment and limiting device, which is applied in the field of network communication and can solve problems such as instability and false triggering.
Active Publication Date: 2011-06-29
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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Problems solved by technology
The bandwidth limiting method, device and network equipment provided by the embodiments of the present invention are used to solve the problem in the prior art that the TCP congestion control mechanism cannot be stably and saturatedly utilized due to the discarding of TCP packets due to bandwidth limitation and the wrong triggering of the TCP congestion control mechanism
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The invention discloses a method, device and network device for limiting bandwidth. The method comprises the following steps: after an acknowledgement character (ACK) message which is returned by a transmission control protocol (TCP) message receiver is received, detecting whether bandwidth quota allocated by a message sender in advance is used up currently; if the bandwidth quota is used up, notifying the TCP message sender to suspend the transmission of a TCP message; and suspending the transmission of the TCP message by the TCP message sender in accordance with the notification until the bandwidth quota is recovered. According to the invention, the problem that network bandwidth can not be used in a stable and saturated mode because a TCP congestion control mechanism is triggered by mistake due to discarding the TCP message resulted from bandwidth limit in the prior art can be solved.
Description
Bandwidth limitation method, device and network equipment technical field The invention relates to the field of network communication, in particular to a bandwidth limiting method, device and network equipment. Background technique The goal of the TCP congestion control mechanism is to maximize the use of network bandwidth without causing congestion in data stream transmission. The existing TCP congestion control mechanism realizes active flow control by setting a "congestion window". The sender takes the "congestion window" and the receiver's "notification window" (that is, the message receiver uses the WINDOW field in the ACK message sent to the message sender to inform the receiver of the size of the remaining receiving buffer) The minimum value of the two is used as the sending upper limit. The sender detects the available network capacity by gradually increasing the size of the "congestion window" to prevent network congestion caused by inappropriate sending volume a...
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IPC IPC(8): H04L12/56H04L1/16H04L47/2466H04L47/525
Inventor 黄凯明
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD