CN101351056B

CN101351056B - Method and apparatus for transmitting fault information

Info

Publication number: CN101351056B
Application number: CN2008102122192A
Authority: CN
Inventors: 丁涛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2011-07-06
Anticipated expiration: 2028-09-05
Also published as: CN101351056A

Abstract

The embodiment of the invention discloses a fault information transmission method and a device thereof. The method includes the steps of detecting the types of received fault information; transforming the fault information into matched transmission signals in an optical transmission network. The embodiment of the invention also discloses a fault information transmission device which comprises a detection module which is used for detecting the types of received fault information and informing a transformation module of the detection results and a transformation module which is used for transforming the fault information into matched transmission signals in the optical transmission network. The adoption of the method and device of the embodiment can cause the fault information of a 10GE access link to be smoothly transmitted in the optical transmission network.

Description

A kind of method and apparatus of fault message transmission

Technical field

The present invention relates to the optical communication technique field, particularly relate to a kind of method and apparatus of fault message transmission.

Background technology

10GE service access OTN/SDH (Optical Transport Network/Synchronous DigitalHierarchy, optical transfer network/Synchronous Digital Hierarchy) network, by similar EoS processing method, carry out parsing, the extraction net load of Ethernet bag earlier, after the tunneling processing, be mapped to OTN/SDH and transmit.As shown in Figure 1, the 10GE data service is from DTE (Data Terminal Equipment, data terminal equipment) So sends to DTE Sn, middle through optical fiber, some OTN websites (wherein OTN website 1 is 10GE service access unit), any one fault of these intermediate line links (optical fiber that comprises OTN equipment and chained device), what demonstrate at DTE Sn receiver side all is link failure, have OAM (Operation this moment, Administration and Maintenance, operation, administer and maintain) information between DTE, transmit the expression link break down.If certain 10GE service node of up direction breaks down, so this node on have node detection to arrive after this fault to send OAM information to up direction, the expression link breaks down, because OAM information does not have the structure of Ethernet message, can not in the OTN network, directly transmit, so prior art is on software view, OAM information is encapsulated as certain form, and being delivered to the upstream data receiving terminal by Overhead, data receiver obtains original link OAM information again through overhead extraction, software analysis etc.

In realizing process of the present invention, the inventor finds that there is following shortcoming in prior art:

OAM information is not net load truly in the prior art, the message structure that does not have Ethernet, therefore in the data packet from Ethernet leaching process, OAM information can not be identified and will be dropped, cause the data transmitted imperfect, though can utilize software to realize transmission OAM information, can increase the response time of system.

Summary of the invention

The embodiment of the invention provides a kind of method and apparatus of fault message transmission, and the fault message of the link of 10GE is transmitted smoothly at the OTN network.

For achieving the above object, the embodiment of the invention provides a kind of method of fault message transmission, comprising:

Detect the type of the fault message that receives;

Described fault message is converted into the transmission signals in optical transfer network of coupling, wherein,

When described fault message was local fault message, the described transmission signals in optical transfer network that described fault message is converted into coupling comprised:

This fault message is converted into the net load PN-11 signal of optical-fiber network OTN network level, and transmits to data terminal equipment DTE Sn by the OTN network;

Whether the station search OTN network internal in the OTN network breaks down, if do not break down, continues to transmit the PN-11 signal by the OTN network to DTE Sn;

If break down, then the PN-11 signal is converted into alarm indication ais signal, and transmits to DTE Sn by the OTN network;

When PN-11 signal or ais signal by the OTN Network Transmission before receiving terminal 10GE service access link, be translated into local fault message after detecting described PN-11 signal or ais signal, send to described 10GE service access link;

Data receiver informs that at down direction fault has appearred in the transmission link of data sending terminal up direction after receiving fault message by 10GE service access link;

When described fault message was the far-end fault message, the described transmission signals in optical transfer network that described fault message is converted into coupling comprised:

The reverse defective of net load that this fault message is converted into the OTN network level is indicated the BDI-P signal, and transmits to data sending terminal by the OTN network;

Before described BDI-P signal arrives the 10GE service access link of data sending terminal by the OTN Network Transmission, need be translated into the fault message that transmits in the described 10GE service access link;

Be translated into the far-end fault message after detecting described BDI-P signal, send to described 10GE service access link.

The method that the embodiment of the invention provides by the type of the fault message that detect to receive, is converted into the transmission signals in optical transfer network of coupling with fault message, makes fault message transmission smoothly in Optical Transmission Network OTN.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is an OTN equipment network schematic diagram in the prior art;

Fig. 2 is the method flow diagram of fault message transmission in the embodiment of the invention;

Fig. 3 is the method flow diagram of fault message transmission in further embodiment of this invention;

Fig. 4 is the device schematic diagram of fault message transmission in further embodiment of this invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail:

The embodiment of the invention provides the method for a kind of fault message transmission, and the information of 10GE link occurs fault is converted into the signal that can transmit in the OTN network, as shown in Figure 2, comprising:

The type of the fault message that step S201, detection receive.Concrete, fault message comprises Local Fault information (local fault message) and Remote Fault information (far-end fault message).

Step S202, described fault message is converted into the transmission signals in optical transfer network of coupling.Concrete, if fault message is a Local Fault information, the direction that promptly sends this fault message breaks down, this Local Fault information is converted into first transmission signals that can transmit in optical transfer network, to DTE Sn transmission, this Local Fault information is mainly used in up direction in the OTN networking; If fault message is a Remote Fault information, the direction that promptly receives this fault message breaks down, this Remote Fault information is converted into the 3rd transmission signals that can transmit in optical transfer network, in the OTN networking, transmit to DTE So, Remote Fault information herein is used to inform that fault has appearred in the link of data sending terminal up direction, is mainly used in down direction.

The method that the fault message that provides by the foregoing description transmits after the 10GE access link breaks down, is converted into the signal that can transmit with fault message in the OTN network, realize the continuous biography of traffic failure information at the OTN network with this.

Further, in optical transfer network, Local Fault information is changed into different transmission signals with Remote Fault information, after transmitting net, can change into corresponding fault message respectively again, guaranteed the accuracy of fault message at fault message.

The method that the embodiment of the invention provides can realize finishing by the signal that transmits the continuous biography of fault message in the OTN network, below the process of up direction fault message transmission is elaborated, and as shown in Figure 3, comprising:

The type of the fault message that step S301, detection receive if this fault message belongs to Local Fault fault message, promptly belongs to the fault that data sending terminal sends the direction generation of data, execution in step S302;

Step S302, this fault message is converted into net load PN-11 signal into the OTN network level, and transmits to DTE Sn by the OTN network.The method that specifically is converted into the PN-11 signal can define according to related protocol, utilizes existing technology to realize.

Whether the website in step S303, the OTN network detects the OTN network internal and breaks down.If break down execution in step S304; If do not break down, continue to transmit the PN-11 signal to DTE Sn by the OTN network.

Step S304, the PN-11 signal is converted into AIS (alarm indication signal, alarm indication) signal, and transmits to DTE Sn by the OTN network.As shown in Figure 1, suppose that the optical fiber at A place ruptures, this fault belongs to the fault of OTN network internal, and this moment, the website of OTN network can detect loss of signal alarm, then net load PN-11 signal was converted into ais signal, and the net load of this signal is complete 1.If the 10GE access link does not break down, promptly there is not the PN-11 signal, also produce AIS information if break down in the OTN network this moment, identifies the OTN network internal with this fault has taken place.OTN network failure and 10GE access link fault can be distinguished by PN-11 signal and ais signal, distinguishing location of fault thus is outside the OTN network or within the OTN network.

When PN-11 signal or ais signal by the OTN Network Transmission before receiving terminal 10GE service access link, need be translated into the fault message that transmits in the 10GE service access link, continue to carry out following steps this moment:

Step S305, be translated into Local Fault fault message after detecting PN-11 signal or ais signal, send to 10GE service access link.

After data receiver receives fault message by 10GE service access link, inform at down direction the data sending terminal up direction transmission link fault has appearred, continue to carry out following steps this moment:

The type of step S306, detection failure information is if this fault message belongs to Remote Fault fault message, execution in step S307;

Step S307, this fault message is converted into net load BDI-P (the oppositely defective indication) signal of OTN network level, and transmits to data sending terminal by the OTN network;

Before the BDI-P signal arrives the 10GE service access link of data sending terminal by the OTN Network Transmission, need be translated into the fault message that transmits in the 10GE service access link, continue to carry out following steps this moment:

Step S308, be translated into Remote Fault fault message after detecting the BDI-P signal, send to 10GE service access link.

By above-mentioned steps, the transmission signals that inserts in the OTN network is converted into the Link Fault information that can transmit in the 10GE access link, can guarantee that like this fault message transmits smoothly in different aspects.Above-mentioned entire process process only needs software to finish initialized configuration, and OAM transmittance process is afterwards all finished by hardware.

The embodiment of the invention also provides a kind of device of fault message transmission, with the method that realizes that the embodiment of the invention provides.As shown in Figure 4, for installing schematic diagram in the embodiment of the invention, specifically comprise:

Detection module 410, be used to detect reception fault message type and notify conversion module 420 with testing result;

Conversion module 420 is used for described fault message is converted into the transmission signals at optical transfer network of coupling.

Above-mentioned conversion module 420 comprises:

The first transformant module 421 is used for when described detection module 410 detection failure information are local fault message described fault message being converted into first transmission signals;

The second transformant module 422 is used for when described detection module 410 detection failure information are the far-end fault message described fault message being converted into the 3rd transmission signals.

Above-mentioned conversion module 420 also comprises:

Judge submodule 423, be used to judge whether described optical transfer network inside breaks down;

The 3rd transformant module 424 is used for when described judgement submodule 423 judges to break down in optical transfer network inside described first transmission signals being converted into second transmission signals; Or produce second transmission signals.

This device can also comprise: recover conversion module 430, be used for described transmission signals is converted into the fault message of coupling.

Said apparatus can be positioned at 10GE access path and OTN network joint, strides the transfer process that layer is realized fault message and transmission signals.

The method and apparatus that the fault message that provides by the embodiment of the invention transmits, the fault message of 10GE access link is converted to the signal that transmits in the OTN network, after can guaranteeing 10GE service access link occurs fault with this, fault message transmits in the OTN network smoothly, and produce ais signal in the time of can in the OTN network, breaking down, distinguish with this and the PN-11 signal that produces by the 10GE access link fault, be convenient to fault location.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims

1. the method for a fault message transmission is applied to optical transfer network, it is characterized in that, comprising:

Detect the type of the fault message that receives;