Protection method for service transmission and network appliance

A technology of business transmission and network equipment, which is applied in the field of communication, can solve problems such as business loss, end nodes cannot recognize alarm indication signals, etc., and achieve the effect of avoiding business loss

Active Publication Date: 2009-08-05
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The end nodes of the protection section cannot recognize the alarm indication signal (AIS) caused by the failure of different locations, so in any case, the protection switching delay operation is

Method used

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  • Protection method for service transmission and network appliance
  • Protection method for service transmission and network appliance
  • Protection method for service transmission and network appliance

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Embodiment Construction

[0024] The embodiments of the present invention provide a service transmission protection method and network equipment, which can reduce service loss during service transmission channel switching.

[0025] The embodiments of the present invention improve the transmission of the alarm indication signal (AIS), so that the end nodes of the protection section can distinguish the protected state and the unprotected protection state of the channel, and choose whether to use the delay time, thereby avoiding unnecessary business loss. Specifically, it can be: add a "protection indication" signaling (independent bit P, or use other identification information) in the down-insertion processing of the alarm indication signal (AIS), when the network element detects a fault, insert the alarm indication signal ( AIS) while inserting "Protection Indication". The end node of the protection section that receives the alarm indication signal (AIS) checks the "protection indication" at the same ti...

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Abstract

The embodiment of the invention discloses a protecting method for service transmission, comprising the following steps: alarm indication signals containing protective indicating identification is obtained and the protective indicating identification shows the protective state of a channel; the protective state of the channel in which faults occur is determined according to the obtained protectiveindicating identification; and if the protective state of the channel is determined to be that protection is not available, protection switching is carried out. The embodiment of the invention provides network equipment, which comprises an obtaining unit, an identification unit and a first processing unit; the obtaining unit is used for obtaining alarm indication signals containing protective indicating identification and the protective indicating identification shows the protective state of a channel; the identification unit is used for determining the protective state of the channel in which faults occur according to the obtained protective indicating identification; and the first processing unit is used for carrying out protection switching when the identification unit determines that the protective state of the channel is no available protection. The technical proposal of the embodiment of the invention can reduce service loss in the protection switching.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a service transmission protection method and network equipment. Background technique [0002] In a complex transport network, in order to provide more reliable protection for the transmission of important services, a nested protection structure can be used to protect the same service transmission at different network layers, such as figure 1 As shown, the section from end node NE1 to end node NE5 belongs to the client layer protection section, and the section from end node NE2 to NE3 belongs to the service layer protection section. The solid line indicates the working channel, and the dotted line indicates the protection channel (only one direction is drawn in the figure) , for two-way protection, the other direction is the same). A series protection structure can also be used, such as figure 2 As shown, there are three protection sections belonging to the same layer: p...

Claims

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Application Information

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IPC IPC(8): H04B1/74H04B17/00
CPCH04B10/032
Inventor 张波陈亘李振宇阎君曾宇何达
Owner HUAWEI TECH CO LTD
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