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Congestion control method and device

A congestion control and controller technology, applied in the network field, can solve problems such as discarding and discarding packets, and achieve the effect of avoiding false discards and improving QoS

Active Publication Date: 2021-10-26
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two methods all process all the packets passing through the PTN device, which will lead to discarding very important packets or discarding high-QoS packets

Method used

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  • Congestion control method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0135] Such as image 3 As shown, this example provides an SDN network system, including a controller and a forwarding device connected to the controller.

[0136] The controller sends the congestion control policy to the forwarding device through the Openflow protocol; the forwarding device reports a feedback message to the controller to feedback whether the sending is successful.

[0137] The forwarding device reports to the controller the execution status of the flow table for congestion control;

[0138] The controller determines whether to resend the congestion control strategy according to the feedback, and adjusts the congestion control strategy according to the execution situation before resending.

[0139] In this example, the congestion control policy may be used as the entry content of the flow table and sent to the forwarding device in the form of a flow table.

[0140] Such as image 3 As shown, the forwarding device includes an ingress port, a classification m...

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Abstract

The embodiment of the present invention discloses a congestion control method and device. The congestion control method applied to the forwarding device includes: receiving at least one congestion control strategy sent by the controller; According to the congestion control parameter corresponding to the parameter; obtaining the characteristic parameter of the message; matching the characteristic parameter with the basis parameter; selecting the congestion control parameter corresponding to the basis parameter matched with the characteristic parameter, and processing the report On the one hand, it can realize congestion control, and on the other hand, it can distinguish different packets for targeted congestion control, avoiding the mistaken discarding of important data packets, thereby improving the QoS of packets.

Description

technical field [0001] The present invention relates to the field of network technology, in particular to a congestion control method and device. Background technique [0002] Congestion avoidance is a very important part of Quality of Service (QoS). When congestion is found, the policy of discarding packets and traffic adjustment can be used to relieve network overload and reduce congestion. In the existing software-defined network (Software Defined Network, SDN), there are two methods for congestion control: [0003] The first type: usually adopt the method of tail drop (Tail Drop) to discard the data packets at the tail, so as to alleviate or avoid congestion; [0004] The second method: weighted random early detection (Weighted Random Early Detected, WRED) method. The WRED mode defines a WRED curve; the WRED curve defines parameters such as a discarding threshold and a packet loss probability, and packets are discarded according to the WRED curve. [0005] Generally, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/801H04L12/813H04L12/851H04L47/20
CPCH04L47/10H04L47/11H04L47/20H04L47/24H04L47/2475H04L47/2441H04L1/1867
Inventor 王敏学程伟强
Owner CHINA MOBILE COMM LTD RES INST