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Linear protection method based on openflow

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

Active Publication Date: 2019-01-25
SUZHOU CENTEC COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Linear protection method based on openflow
  • Linear protection method based on openflow
  • Linear protection method based on openflow

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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 present invention discloses a linear protection method based on OpenFlow, the method comprises that the OpenFlow controller sends a flow table to the data sending end and the data receiving end, and the data sending end receives the MPLS message and according to the flow table issued by the OpenFlow controller The MPLS message is sent to the data receiving end through the communication link, and the data receiving end selects a corresponding communication link to receive the MPLS message according to the flow table behavior issued by the OpenFlow controller. Based on the semantics of OpenFlow, the present invention realizes 1+1 and 1:1 linear protection, and provides a protection scheme with practical use value for promoting network migration to the unified management stage through OpenFlow.

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-Protocol Label Switching Transport Profile, multi-protocol label switching transmission network standard) was proposed by the joint working group established by ITU-T and IETF in April 2008, and its predecessor was ITU-T in May 2005 The T-MPLS technical standard that started to develop. [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 requirements of the transmission network, MPLS-TP proposes the concept of layering, which is mainly div...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L29/08H04L12/723H04L45/50
Inventor 刘敬一
Owner SUZHOU CENTEC COMM CO LTD
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