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Protection switching method and node equipment

A technology of protection switching and node equipment, which is applied in the field of communication, can solve the problems that protection switching or recovery cannot be carried out consistently, and achieve the effect of avoiding business loss

Inactive Publication Date: 2013-03-20
郭龙 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] During the research and practice of the above scheme, the inventors of the present invention found that: since the node devices perform protection switching or recovery according to the information related to the fault, if the processing mechanisms of the node devices at both ends are inconsistent, it will lead to protection Switchover or recovery cannot be performed consistently

Method used

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  • Protection switching method and node equipment
  • Protection switching method and node equipment

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Experimental program
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Embodiment 1

[0029] Embodiment 1. A protection switching method. In this embodiment, the method of modifying the control mechanism for sending the fault indication message by the node device is adopted. Process reference image 3 , including the steps:

[0030] 101. When the local node device transmits services on the protection transport entity, it learns that the working transport entity returns to normal.

[0031] In this embodiment, the working transfer entity and the protection transfer entity may be bidirectional or unidirectional transfer entities. The local node device usually switches services to the protection transport entity for transmission through a protection switching process after the working transport entity fails.

[0032] ①For the one-way transmission entity, since the working entity only exists in one direction, the fault clearing only needs to be judged according to the fault state in this direction.

[0033] ②For the case of two-way transmission entity and one-wa...

Embodiment 2

[0058] Embodiment 2. A protection switching method. In this embodiment, the method of carrying the protection switching request information in the connection monitoring message is adopted. Process reference Figure 5 , including the steps:

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Abstract

The invention discloses a protection switching method and corresponding node equipment. By adopting a control mechanism of modifying node equipment and sending fault indication messages or adopting a mode of carrying protection switching request information in connection monitoring messages, the embodiment of the invention enables the node equipment at two ends to be capable of carrying out consistent switching operations in time, thereby preventing services from losing.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a protection switching method and corresponding node equipment. Background technique [0002] In the transport network, protection switching is usually used to ensure the reliability of the transmitted services, that is, when a node or link of the transport network fails, the services on the faulty path are switched to the pre-designated backup path for transmission. In this paper, the transmission channel normally used by the transport network is called the working transport entity, and one or more backup transmission channels corresponding to it are called the protection transport entity. [0003] Taking Multi-Protocol Label Switching (MPLS: Multi-Protocol Label Switching) and Ethernet as examples below, the current protection switching methods are introduced. [0004] 1. Unidirectional protection switching in MPLS [0005] refer to figure 1 , both the working transpor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/703H04L45/28
Inventor 贺佳龙昊
Owner 郭龙
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