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Method and system for discarding wred packets based on sdn

A message discarding and message technology, applied in the transmission system, digital transmission system, data exchange network, etc., can solve problems such as error-prone, fixed packet loss strategy, complex configuration, etc.

Active Publication Date: 2020-11-27
安徽麦游网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method and system for discarding WRED packets based on SDN in order to overcome the defects that the packet loss strategy of the WRED flow control algorithm in the prior art is fixed, the configuration is complicated and error-prone

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  • Method and system for discarding wred packets based on sdn
  • Method and system for discarding wred packets based on sdn
  • Method and system for discarding wred packets based on sdn

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Embodiment Construction

[0039] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail, but the present invention is not limited to the scope of the described embodiments.

[0040] This embodiment provides an SDN-based WRED packet discarding system, which includes an SDN controller, an ingress switch, and an egress switch.

[0041] Such as figure 2 As shown, if the data packet is transmitted from the client to the server, then figure 2 In S1 is the ingress switch, and S3 is the egress switch; if the data packet is transmitted from the server to the client, then figure 2 In S3 is the ingress switch, and S1 is the egress switch. The SDN controller is for the overall control of the network, namely figure 2 S0-S3 in the network will report private messages to the SDN controller, and then the SDN controller will configure the flow table and send it to each switch, and then ...

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Abstract

The invention discloses a method and system for discarding WRED messages based on SDN, comprising: an SDN controller is configured with a WRED algorithm; the SDN controller acquires messages from an ingress switch and creates a WRED entry; the SDN controller receives and reports from an egress switch According to the Experimenter message, the actual load of the egress switch's egress port and the priority of different traffic are obtained according to the Experimenter message; the SDN controller dynamically generates the traffic of the current link according to the actual load of the egress port and the priority of different traffic The WRED flow table is sent to the ingress switch; the ingress switch adjusts the entry or loss of data packets on the ingress port according to the WRED flow table. The SDN controller performs unified scheduling, and the sending status of the egress port will be fed back to the SDN controller in real time. The SDN controller adopts the WRED packet loss policy on the ingress port according to the congestion status of the egress port.

Description

technical field [0001] The present invention relates to the technical field of message discarding strategy, in particular to a WRED (Weighted Random Early Detection, weighted random early detection) message discarding method and system based on SDN (Software Defined Network, software defined network). Background technique [0002] Tail-drop (tail drop) is a traditional packet loss strategy. When the length of the queue reaches the maximum value, all new incoming packets will be discarded. This discarding strategy will cause TCP (Transmission Control Protocol, Transmission Control Protocol) global synchronization phenomenon. Specifically, when the queue discards the messages of multiple TCP connections at the same time, it will cause multiple TCP connections to enter the congestion avoidance and slow start states simultaneously. In order to reduce and adjust the traffic, and then there will be a traffic peak at a certain time at the same time, and so on, so that the network t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/823H04L12/851H04L47/32
CPCH04L47/24H04L47/326
Inventor 翟跃
Owner 安徽麦游网络科技有限公司