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Data network linear lossless network protection method

A lossless network and data network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as packet loss

Inactive Publication Date: 2017-12-08
王剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most data network technologies have certain packet loss when performing network protection under network failure conditions.

Method used

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  • Data network linear lossless network protection method
  • Data network linear lossless network protection method

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Embodiment Construction

[0019] For the mpls network, the control word in the common format can be extended after the PW label to record the serial number, such as figure 2 shown. According to the mpls protocol, 0-3 bits must be 0; the remaining 28 bits can be used to record the serial number, and the serial number ranges from 1 to 268, 435, 455. For a gigabit network, it takes about 13 seconds, which is far longer than the longest possible end-to-end transmission time of a general gigabit network. A value of 0 is used to turn off the serial number counting function.

[0020] During the sending process of the protection endpoint, when duplicating each transmitted message in two mutually backup PWs, the same sequence number can be carried in the extended control word at the same time.

[0021] In the receiving process of the opposite protection endpoint, two channels of messages are simultaneously received from the two mutually backup PWs (respectively called A and B), and the non-destructive filter...

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Abstract

Aiming at all data networks, the present invention proposes a zero-loss and lossless mechanism for carrying serial numbers in messages, copying and sending of messages on mutually backup paths, and lossless screening of messages based on serial numbers at the receiving end. Linear network protection method.

Description

technical field [0001] Industrial control and data network communication field. Background technique [0002] Industrial control is increasingly using data network communications, but industrial control often requires network transmission to achieve higher reliability, such as "zero packet loss." At present, most data network technologies have a certain amount of packet loss when performing network protection under network failure conditions. The invention is aimed at all types of data networks, and can realize "zero packet loss" lossless linear network protection when the network fails, and provides a basis for the application of data networks in high-level industrial control. Contents of the invention [0003] A data network, or a computer network, is composed of a network node that implements a data network communication protocol and a link (line) that connects the nodes; Communication protocols can be divided into DTE (data communication initiation or termination uni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24
Inventor 王健
Owner 王剑
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