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Open Flow based linear protection method

A linear protection and data technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as unfavorable unified management of network management

Active Publication Date: 2016-01-13
SUZHOU CENTEC COMM CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0005] However, in the traditional MPLS-TP linear protection, whether to switch or not is determined locally by the sender and receiver, which is not conducive to the unified management of the network management

Method used

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  • Open Flow based linear protection method

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Embodiment Construction

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

[0024] The present invention realizes 1+1 and 1:1 linear protection through OpenFlow, and transfers the control right of link switching from the switch to the controller, which is convenient for unified management.

[0025] When there are multiple paths (generally two) from the sending end of the data to the receiving end, define one of them as a Working (working) link and the other as a Protection (protection) link. Data can be switched between these two paths, thereby realizing the function of protection. The principle of 1+1 linear protection is "double sending and single receiving". The message sending end sends the same data to the working and protection paths at the same time, and the message receiving end will select one path to receive.

[0026] figure 1 It is a schematic fl...

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Abstract

The invention discloses an Open Flow based linear protection method. The method comprises steps that an Open Flow controller sends a flow table to a data transmitting end and a data receiving end; the data transmitting end receives a multi-protocol label switching (MPLS) message and sends the MPLS message through a communication link to the data receiving end according to the flow table sent from the Open Flow controller; the data receiving end, according to the flow table sent from the Open Flow controller, performs behavior selection on a corresponding communication link to receive the MPLS message. According to the method, 1+1 and 1:1 linear protection can be realized based on the semanteme of Open Flow. The Open Flow based linear protection method has actual application value in promoting network migration to an Open Flow unified management stage.

Description

technical field [0001] The invention relates to the technical field of linear protection, in particular to an OpenFlow-based linear protection method. Background technique [0002] MPLS-TP (Multi-ProtocolLabelSwitchingTransportProfile, multi-protocol label switching transmission network standard) was proposed by the joint working group established by ITU-T and IETF in April 2008. Its predecessor was the T protocol developed by ITU-T in May 2005. -MPLS technical standard. [0003] With the development of communication technology, MPLS-TP has become a mainstream direction of transmission network development. MPLS-TP technology simplifies and transforms Multi-Protocol Label Switching (MPLS) and Pseudowire (MPLS / PW) technologies, and introduces the concepts of transport network layering, OAM and protection to meet the needs of transport networks. In order to meet the needs of the transmission network, MPLS-TP proposes the concept of layers, which are mainly divided into Sectio...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L29/08H04L12/723H04L45/50
Inventor 刘敬一
Owner SUZHOU CENTEC COMM CO LTD
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