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Control method for data flow transmission route, device and route equipment

A technology of data stream transmission and data flow, applied in the field of data communication, which can solve problems such as packet discarding

Active Publication Date: 2011-05-11
BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a data flow transmission path control method, device, and routing device to solve the problem caused by the asymmetry of the forward data flow and reverse data flow transmission paths when the routing device is connected to different ISPs. The problem that the half-connection causes the packet to be discarded

Method used

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  • Control method for data flow transmission route, device and route equipment
  • Control method for data flow transmission route, device and route equipment
  • Control method for data flow transmission route, device and route equipment

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Embodiment Construction

[0020] The specific implementation manners of a data flow transmission path control method, device, and routing device provided in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] The control method of the data flow transmission path provided by the embodiment of the present invention, such as figure 2 shown, including the following steps:

[0022] S201. Receive the first message;

[0023] S202. Query whether there is a connection tracking table of the reverse data flow that is consistent with the source address and destination address of the first message locally; if it exists, perform the following step S203, and if it does not exist, turn to the following step S205;

[0024] S203. Determine whether the interface receiving the first message needs to control the reverse data flow transmission path and avoid routing forwarding; if necessary, perform step S204; if not, perform the following step S...

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PUM

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Abstract

The invention discloses a control method for data flow transmission route, a device and route equipment. The method comprises the steps of: aiming at the received first message, inquiring if a connection track table for reverse data flow consistent with a first message source address and a target address exists locally, if yes, judging if an interface transferring the first message is arranged asrequiring the control of the reverse data flow transmission route and avoiding transferring by using a route, and if yes, sending the first message to the route equipment corresponding to a next skipping IP address of an outlet interface according to the next skipping IP address of the outlet interface recorded in the connection track table for reverse data flow. The invention solves the problem of message lose caused by the semi-connection because of the unsymmetrical transmission routes of positive data flow and negative data flow under the condition of connecting the route equipment to different ISP.

Description

technical field [0001] The present invention relates to the technical field of data communication, in particular to a control method, device and routing device for a data stream transmission path. Background technique [0002] As a multi-exit router device of a network, it is often connected with different Internet Service Providers (Internet Service Providers, ISPs). The access restrictions of each ISP are different. Some ISPs will restrict the access of some illegal addresses on the uplink port, and send the data flow of the message to the corresponding export. When the routing list is incomplete or the round-trip path is asymmetrical due to other reasons, the data flow of normal service packets cannot be communicated between ISPs. [0003] Such as figure 1 As a specific example shown, the multi-exit router of the campus intranet is connected to two ISPs, one is the education network and the other is the telecommunications network. Telecom users in the telecommunication...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L45/74
Inventor 黄小珊
Owner BEIJING XINWANG RUIJIE NETWORK TECH CO LTD
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