CN105281931B - Bit error detection method, the apparatus and system of POTN - Google Patents

Bit error detection method, the apparatus and system of POTN Download PDF

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Publication number
CN105281931B
CN105281931B CN201410272784.3A CN201410272784A CN105281931B CN 105281931 B CN105281931 B CN 105281931B CN 201410272784 A CN201410272784 A CN 201410272784A CN 105281931 B CN105281931 B CN 105281931B
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warning message
intermediate node
node
potn
business
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CN105281931A (en
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温建中
詹双平
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Nanjing ZTE New Software Co Ltd
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Nanjing ZTE New Software Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks

Abstract

The invention discloses the bit error detection methods of POTN a kind of, apparatus and system, wherein this method comprises: to judge whether there is error code out-of-limit for the intermediate node of POTN network, wherein above-mentioned intermediate node and another intermediate node pass through OTN link connection;Above-mentioned intermediate node sends warning message to the impacted corresponding downstream node of business according to judging result.Through the invention, solve the problems, such as that the error detection precision of POTN network in the related technology is lower, can be realized the higher precision in POTN network performance degradation and more reliable pretection switch, promoted PTN business reliability.

Description

Bit error detection method, the apparatus and system of POTN
Technical field
The present invention relates to the communications fields, in particular to a kind of grouping optical transfer network (Package Optical Transport Network, referred to as POTN) bit error detection method, apparatus and system.
Background technique
At present in telecom operators' transmission network using Packet Transport Network (Package Transport Network, referred to as PTN) networking of Over optical transfer network (Optical Transport Network, referred to as OTN) is relatively conventional, and wherein PTN is used In service access, business end to end and protection are provided, OTN mainly provides large capacity and long distance transmission.With telecom operation The raising that quotient requires network reliability needs also to be able to achieve service protection when there is link performance deterioration in network, due to Protection is completed by PTN end to end, and performance deterioration (Signal Degraded, referred to as SD) protection at this time is set by PTN It is standby to realize.It can only be a kind of localised protection although OTN also can provide SD protection, and PTN is superimposed with OTN protection in network Network protection structure is complicated Deng other problems can be brought, will not generally be disposed in a network.
PTN is the network based on packet switch, and SD protection is that performance degradation is judged based on packet loss detection, is lost Packet detection can operation management based on PTN and maintenance (Operations, Administration and Maintenance, Referred to as OAM) mechanism (as G.8113.1/G.8113.2) or Ethernet media access control (Media Access Control, referred to as MAC) layer FCS: frame check sequence (Frame Check Sequence, referred to as FCS) inspection mechanism. Because all there is certain relationship in packet loss detection mechanism and service traffics, link packet sending speed, business packet length etc., it is difficult to accomplish high-precision The packet loss of degree detects, such as in identical service traffics, and business packet length is bigger, then the quantity of giving out a contract for a project of each second is got over Few, the precision of packet loss detection is lower.The packet loss precision that can be detected usually in the network of PTN is 10-3~10-6Between, There are larger differences for this network with synchronous digital system (Synchronous Digital Hierarchy, referred to as SDH)/OTN Away from (in SDH/OTN network, error detection precision can reach 10-9).Therefore, the grouping optical transfer network merged in PTN with OTN (POTN) in network, current error detection precision is lower.
For the lower problem of the error detection precision of POTN network in the related technology, effective solution is not yet proposed at present Scheme.
Summary of the invention
For the lower problem of the error detection precision of POTN network in the related technology, the present invention provides a kind of POTN's Bit error detection method, apparatus and system, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of bit error detection method of POTN, comprising: the centre of POTN network It is out-of-limit that node judges whether there is error code, wherein the intermediate node and another intermediate node are connected by optical transfer network OTN link It connects;The intermediate node sends warning message to the impacted corresponding downstream node of business according to judging result.
Preferably, it includes: that the intermediate node passes through OTN that it is out-of-limit, which to judge whether there is error code, for the intermediate node of POTN network It is out-of-limit that error detection techniques judge whether there is error code.
Preferably, the intermediate node sends alarm report to the impacted corresponding downstream node of business according to judging result Text, which includes: the intermediate node, sends Packet Transport Network PTN to the impacted corresponding downstream node of business according to judging result The operation management of network and maintenance OAM warning message.
Preferably, PTN is sent to the impacted corresponding downstream node of business according to judging result in the intermediate node After the OAM warning message of network, further includes: the downstream node parses the OAM warning message;The downstream joint Point determines whether to execute according to parsing result and pretection switch rule to be switched.
Preferably, the intermediate node sends alarm report to the impacted corresponding downstream node of business according to judging result Text includes: in the case where the judging result is out-of-limit there are error code, and the intermediate node is corresponding to impacted business Downstream node sends the warning message for notifying alarm to generate;And/or in the feelings that the judging result is the out-of-limit disappearance of error code Under condition, the intermediate node sends the warning message for notifying alarm to disappear to the impacted corresponding downstream node of business.
Preferably, the intermediate node sends alarm report to the impacted corresponding downstream node of business according to judging result Text includes: that the intermediate node is got over according to judging result to the impacted corresponding downstream node transmission carrying Far End Bit Error of business The message of limit instruction FEI, wherein it is for notifying alarm to produce that the out-of-limit instruction of Far End Bit Error, which is used to indicate the warning message, Raw warning message or the warning message for notifying alarm to disappear.
According to another aspect of the present invention, the device for detecting code error of POTN a kind of is provided, positioned at the centre of POTN network In node, wherein by optical transfer network OTN link connection, described device includes: to sentence for the intermediate node and another intermediate node Disconnected module, it is out-of-limit for judging whether there is error code;Sending module, for corresponding to impacted business according to judging result Downstream node sends warning message.
Preferably, the judgment module includes: judging unit, for being judged whether there is by OTN error detection techniques Error code is out-of-limit.
Preferably, the sending module includes: the first transmission unit, for according to judging result to impacted business pair The downstream node answered sends operation management and the maintenance OAM warning message of Packet Transport Network PTN network.
Preferably, the sending module includes: the second transmission unit, for out-of-limit for there are error codes in the judging result In the case where, the warning message for notifying alarm to generate is sent to the impacted corresponding downstream node of business;And/or In In the case that the judging result is the out-of-limit disappearance of error code, send to the impacted corresponding downstream node of business for notifying to accuse The alert warning message to disappear.
Preferably, the sending module includes: third transmission unit, for according to judging result to impacted business pair The downstream node answered sends the message for carrying the out-of-limit instruction FEI of Far End Bit Error, wherein the out-of-limit instruction of Far End Bit Error is for referring to Show that the warning message is the warning message for notifying alarm to generate or the warning message for notifying alarm to disappear.
According to another aspect of the present invention, the error detection system of POTN a kind of, the mistake including above-mentioned POTN are additionally provided Code detection device, further includes downstream node, wherein the downstream node includes: parsing module, for being OAM in warning message In the case where warning message, the OAM warning message is parsed;Determining module, for being fallen according to parsing result and protection It changes rule and determines whether that execution is switched.
Through the invention, to judge whether there is error code using the intermediate node of POTN network out-of-limit, wherein above-mentioned middle node Point passes through OTN link connection with another intermediate node;Above-mentioned intermediate node is corresponding to impacted business according to judging result Downstream node sends the mode of warning message, solves the problems, such as that the error detection precision of POTN network in the related technology is lower, Can be realized the higher precision in POTN network performance degradation and more reliable pretection switch, promoted PTN business can By property.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the bit error detection method of POTN according to an embodiment of the present invention;
Fig. 2 is the structural block diagram of the device for detecting code error of POTN according to an embodiment of the present invention;
Fig. 3 is the structural block diagram of the error detection system of POTN according to an embodiment of the present invention;
Fig. 4 is POTN network protection networking schematic diagram according to the preferred embodiment of the invention;
Fig. 5 is the algorithm flow schematic diagram of POTN network protection according to the preferred embodiment of the invention;
Fig. 6 is that convergence layer according to the preferred embodiment of the invention uses POTN equipment, uses OTN connection between aggregation node Networking schematic diagram;
Fig. 7 is according to embodiments of the present invention one business and OAM message encapsulation schematic diagram;
Fig. 8 is according to embodiments of the present invention two business and OAM message encapsulation schematic diagram.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
In the present embodiment, the bit error detection method of POTN a kind of is provided, Fig. 1 is POTN according to an embodiment of the present invention Bit error detection method flow chart, as shown in Figure 1, this method comprises the following steps:
It is out-of-limit that the intermediate node of step S102, POTN network judges whether there is error code, wherein above-mentioned intermediate node and another One intermediate node passes through OTN link connection;
Step S104, above-mentioned intermediate node send alarm to the impacted corresponding downstream node of business according to judging result Message.
Through the above steps, it is out-of-limit that the intermediate node of POTN network judges whether there is error code to the present embodiment, and will judge Result notice gives the impacted corresponding downstream node of business, so that downstream node can whether there is according to intermediate node The out-of-limit situation of error code combines that error code is out-of-limit and PTN switches the function of processing to take the circumstances into consideration to determine whether to execute pretection switch Can, it solves the problems, such as that the error detection precision of POTN network in the related technology is lower, can be realized higher in POTN network The performance degradation of precision and more reliable pretection switch promote the reliability of PTN business.
Preferably, the intermediate node of POTN network can be by OTN error detection techniques to determine whether there are error codes to get over Limit.
Preferably, above-mentioned intermediate node sends alarm report to the impacted corresponding downstream node of business according to judging result Wen Shi can send the OAM warning message of PTN network.
Preferably, after above-mentioned intermediate node sends OAM warning message to downstream node, above-mentioned downstream node can be right Above-mentioned OAM warning message is parsed, and then is determined whether to execute according to parsing result and pretection switch rule and be switched.
As a preferred embodiment, above-mentioned intermediate node is according to judging result to the impacted corresponding downstream of business The mode that node sends warning message can specifically include: above-mentioned in the case where above-mentioned judging result is out-of-limit there are error code Intermediate node can send the warning message for notifying alarm to generate to the impacted corresponding downstream node of business;And/or In the case where the disappearance out-of-limit for error code of above-mentioned judging result, above-mentioned intermediate node can be to the impacted corresponding downstream of business Node sends the warning message for notifying alarm to disappear.
Preferably, above-mentioned intermediate node sends alarm report to the impacted corresponding downstream node of business according to judging result Wen Shi, can be carried in the warning message Far End Bit Error it is out-of-limit instruction (Far-End Error Indication, referred to as FEI message), wherein it is for notifying alarm to generate that the out-of-limit instruction of said distal ends error code, which is used to indicate above-mentioned warning message, Warning message or for notify alarm disappear warning message.
Corresponding to the above method, the device for detecting code error of POTN a kind of is additionally provided in the present embodiment, is located at POTN net In the intermediate node of network, wherein above-mentioned intermediate node and another intermediate node by OTN link connection, the device for realizing Above-described embodiment and preferred embodiment, the descriptions that have already been made will not be repeated.As used below, term " module " can To realize the combination of the software and/or hardware of predetermined function.Although device described in following embodiment is preferably come with software It realizes, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
Fig. 2 is the structural block diagram of the device for detecting code error of POTN according to an embodiment of the present invention, as shown in Fig. 2, the device Include: judgment module 22 and sending module 24, modules be described in detail below:
Judgment module 22, it is out-of-limit for judging whether there is error code;Sending module 24 is connected with judgment module 22, is used for Warning message is sent to the impacted corresponding downstream node of business according to the judging result of judgment module 22.
Preferably, above-mentioned judgment module 22 may include: judging unit 222, for being judged by OTN error detection techniques It is out-of-limit with the presence or absence of error code.
Preferably, above-mentioned sending module 24 may include: the first transmission unit 242, for sentencing according to judgment module 22 Disconnected result sends the OAM warning message of PTN network to the impacted corresponding downstream node of business.
Preferably, above-mentioned sending module 24 can also include: the second transmission unit 244, in judgment module 22 State judging result be there are error code it is out-of-limit in the case where, send to the corresponding downstream node of impacted business for notifying alarm The warning message of generation;It is corresponding to impacted business and/or in the case where the disappearance out-of-limit for error code of above-mentioned judging result Downstream node send for notify alarm disappearance warning message.
Preferably, above-mentioned sending module 24 can also include: third transmission unit 246, for according to judgment module 22 Judging result sends the message for carrying the out-of-limit instruction of Far End Bit Error to the impacted corresponding downstream node of business, wherein above-mentioned It is for notifying to alert the warning message generated or for notifying that the out-of-limit instruction of Far End Bit Error, which is used to indicate above-mentioned warning message, Alert the warning message to disappear.
In the present embodiment, the error detection system of POTN a kind of is additionally provided, Fig. 3 is according to an embodiment of the present invention The structural block diagram of the error detection system of POTN, as shown in figure 3, the system includes the error code inspection of above-mentioned POTN as shown in Figure 2 Device 20 is surveyed, further includes downstream node 30, wherein above-mentioned downstream node 30 includes parsing module 32 and determining module 34:
Parsing module 32, for being carried out to above-mentioned OAM warning message in the case where warning message is OAM warning message Parsing;Determining module 34 is connected with parsing module 32, for true according to parsing result and the pretection switch rule of parsing module 32 Fixed whether execute is switched.
It is illustrated below with reference to preferred embodiment, preferred embodiment below combines above-described embodiment and its preferred implementation Mode.
In preferred embodiment below, the networking of a kind of PTN and OTN fusion device (commonly referred to as POTN equipment) are proposed In, performance deteriorates a kind of improved method of (SD) defencive function, mixes in particular to POTN equipment in PTN and OTN Under networking application mode, error detection precision when SD protection is improved, so that the more accurate a kind of reliable method of SD protection.It should Method provides pass through mechanism and the protection triggering of a kind of performance deterioration in the networking of PTN and OTN fusion device (POTN equipment) Mechanism, so that high-precision error detection and pretection switch may be implemented in PTN protection end to end in POTN network.
The method of this preferred embodiment relates generally to three modules:
Error code detection module (function of realizing above-mentioned judgment module 22): the error code detection module of OTN interface, the module It is realized using the OTN error detection techniques of the relevant technologies, it can be achieved that high-precision error detection;
Error code transfer module (function of realizing above-mentioned sending module 24): the out-of-limit announcement of the error code that OTN interface is detected Alert the case where generating is the OAM message (i.e. above-mentioned warning message) of PTN network, notice PTN network protection by the module converter The node executed is acted, OAM message needs herein are extended in original PTN OAN mechanism;
Bit error processing module (function of realizing above-mentioned parsing module 32): PTN network protection act execute node, The module receives OAM message (the i.e. above-mentioned announcement for the carrying out-of-limit instruction of Far End Bit Error that POTN equipment transmitting on service path comes Warning message) after, error code instruction is notified into pretection switch processing module as one of pretection switch trigger condition, by pretection switch Reason module judges whether to be switched;
PTN is switched processing module (function of realizing above-mentioned determining module 34): comprehensive various trigger conditions, judgement are switched State simultaneously executes corresponding actions, which switches processing module using the PTN device of the relevant technologies and can be realized.
Fig. 4 is POTN network protection networking schematic diagram according to the preferred embodiment of the invention, as shown in figure 4, in POTN net In network, it is assumed that (other to be connected as OTN connection or Ethernet connection using OTN link connection between intermediate node P1 and P2 , unrelated with being described below), then there are error code detection module and error code transfer module on P1/P2 node, is saved in PE1/PE2 There are bit error processing module and PTN to switch processing module on point.
In conjunction with above-mentioned networking schematic diagram, Fig. 5 is the algorithm flow of POTN network protection according to the preferred embodiment of the invention Schematic diagram, as shown in figure 5, the process includes the following steps:
Step S502, on P1/P2 node, using OTN error detection techniques, it is out-of-limit to judge whether there is error code, if It is out-of-limit that there are error codes, enters step S504, otherwise enters step S508;
Step S504 generates the out-of-limit instruction of Far End Bit Error if that there are error codes is out-of-limit for error code detection module judgement, then by accidentally To the impacted corresponding downstream PE node of business, (downstream node of P1 is PE1, the downstream joint of P2 to code transfer module in detail in this figure Point sends specific OAM message for PE2) and (is defined herein as carrying the out-of-limit instruction (f of Far End Bit Errorar-end error indicatioN, referred to as FEI) message, referred to as FEI message, notice alarm generates;
Step S506, PE1/PE2 node bit error processing module is extracted and is parsed FEI message, the production of error code is passed It is delivered to PTN and switches processing module;
Step S508 sends FEI message by error code transfer module and leads to if error code detection module judges the out-of-limit disappearance of error code Know that alarm disappears (or indicating that alarm disappears to stop paying out message);
Step S510, PE1/PE2 node bit error processing module is extracted and is parsed FEI message, the Disappearance Scenarios of error code are passed It is delivered to PTN and switches processing module;
Step S512, PTN switch processing module and switch result according to pretection switch rule, decision and execution
Using this preferred embodiment error code transmitting and treatment mechanism, in conjunction with the relevant technologies OTN error detection techniques and PTN switch processing function, it can be achieved that in POTN network the performance degradation of higher precision and more reliable pretection switch, mention Rise the reliability of PTN business.
It is described below in POTN bearer network, after error code occurs in a certain section of OTN link, according to this preferred embodiment The specific embodiment of pretection switch.
Fig. 6 is that convergence layer according to the preferred embodiment of the invention uses POTN equipment, uses OTN connection between aggregation node Networking schematic diagram, as shown in fig. 6, network is generally divided into three access, convergence and core levels in metropolitan area POTN bearer network, POTN equipment network mainly currently is used in convergence layer or core layer, access layer mainly uses pure PTN device networking, following possible Evolution is to POTN equipment network.Here POTN equipment is only used with convergence layer, using being said for OTN connection between aggregation node It is bright.
Embodiment one:
When POTN equipment is realized, light data unit (Optical Channel Data Unit, referred to as ODU) carrying Multiprotocol label switching-transport architecture (Multi-Protocol Label Switching-Transport Profile, referred to as For pseudo-wire (Pseudo Wire, referred to as PW) over ODU mode, service label switching path can be used when MPLS-TP) (Label Switched Path, referred to as LSP) terminates in POTN equipment, and the scheme of embodiment one is as follows at this time:
1) in P1 equipment, it is out-of-limit that error code detection module detects that error code occurs for some ODUk;
2) error code transfer module judges the business PW influenced by the ODUk in P1 equipment, herein include PE1-PE3 business and PE2-PE3 business, error code transfer module send FEI message using PW OAM encapsulation to PE1 and PE2, and FEI message uses G.8113.1 the OAM message structure defines new operation code (Operating Code, referred to as OPCode) value to indicate this Message is FEI message, the out-of-limit instruction of error code (having alarm is 1, no alarm 0) is carried in message, Fig. 7 is to implement according to the present invention The business and OAM message encapsulation schematic diagram of example one, message encapsulation are as shown in Figure 7;
3) bit error processing module from interface identification extracts FEI message in PE1 and PE2 equipment, analytic message content, judgement Work has the out-of-limit generation of error code on the path PW, notifies that PTN switches processing module in node;
4) PTN switches processing module decision and needs to implement SD and switches in PE1 and PE2 equipment, and Business Stream is switched to and is being protected Protect PW transmitting-receiving;
5) terminate.
Embodiment two:
When POTN equipment is realized, LSP over ODU mode can also be used when ODU carrying MPLS-TP, business LSP exist It is carried on ODUk after the enterprising row label exchange of POTN equipment, the scheme of embodiment two is as follows at this time:
1) in P1 equipment, it is out-of-limit that error code detection module detects that error code occurs for some ODUk;
2) error code transfer module judges the business LSP influenced by the ODUk in P1 equipment, herein include PE1-PE3 business and PE2-PE3 business, error code transfer module send FEI message using LSP OAM encapsulation to PE1 and PE2, and FEI message uses G.8113.1 the OAM message structure defines new OPCode value to indicate that this message for FEI message, carries error code in message Out-of-limit instruction (having alarm is 1, no alarm 0), Fig. 8 are according to embodiments of the present invention two business and OAM message encapsulation signal Figure, message encapsulation are as shown in Figure 8;
3) bit error processing module from interface identification extracts FEI message in PE1 and PE2 equipment, analytic message content, judgement Work has the out-of-limit generation of error code on the path LSP, notifies that PTN switches processing module in node;
4) PTN switches processing module decision and needs to implement SD and switches in PE1 and PE2 equipment, and Business Stream is switched to and is being protected Protect LSP transmitting-receiving;
5) terminate.
From above preferred embodiment as can be seen that the testing mechanism process flow is succinct, strong operability, in POTN equipment There is stronger practical value in networking application.
In another embodiment, a kind of software is additionally provided, the software is for executing above-described embodiment and preferred reality Apply technical solution described in example.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned software is stored in the storage medium, it should Storage medium includes but is not limited to CD, floppy disk, hard disk, scratch pad memory etc..
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of bit error detection method for being grouped optical transfer network POTN characterized by comprising
It is out-of-limit that the intermediate node of POTN network judges whether there is error code, wherein the intermediate node and another intermediate node are logical Cross optical transfer network OTN link connection, wherein it includes: institute that it is out-of-limit, which to judge whether there is error code, for the intermediate node of the POTN network Stating intermediate node, by OTN error detection techniques to judge whether there is error code out-of-limit;
The intermediate node sends warning message to the impacted corresponding downstream node of business according to judging result.
2. the method according to claim 1, wherein the intermediate node is according to judging result to impacted industry Be engaged in corresponding downstream node sends warning message and includes:
The intermediate node sends Packet Transport Network PTN network to the impacted corresponding downstream node of business according to judging result Operation management and maintenance OAM warning message.
3. according to the method described in claim 2, it is characterized in that, in the intermediate node according to judging result to impacted The corresponding downstream node of business is sent after the OAM warning message of PTN network, further includes:
The downstream node parses the OAM warning message;
The downstream node determines whether to execute according to parsing result and pretection switch rule to be switched.
4. the method according to claim 1, wherein the intermediate node is according to judging result to impacted industry Be engaged in corresponding downstream node sends warning message and includes:
In the case where the judging result is out-of-limit there are error code, the intermediate node is to the impacted corresponding downstream of business Node sends the warning message for notifying alarm to generate;And/or
In the case where the judging result is the out-of-limit disappearance of error code, the intermediate node is to the impacted corresponding downstream of business Node sends the warning message for notifying alarm to disappear.
5. according to the method described in claim 4, it is characterized in that, the intermediate node is according to judging result to impacted industry Be engaged in corresponding downstream node sends warning message and includes:
The intermediate node is out-of-limit to the impacted corresponding downstream node transmission carrying Far End Bit Error of business according to judging result Indicate the message of FEI, wherein it is for notifying alarm to generate that the out-of-limit instruction of Far End Bit Error, which is used to indicate the warning message, Warning message or for notify alarm disappear warning message.
6. a kind of device for detecting code error for being grouped optical transfer network POTN, in the intermediate node of POTN network, wherein in described Intermediate node and another intermediate node pass through optical transfer network OTN link connection characterized by comprising
Judgment module, it is out-of-limit for judging whether there is error code, wherein the judgment module includes: judging unit, for passing through It is out-of-limit that OTN error detection techniques judge whether there is error code;
Sending module, for sending warning message to the impacted corresponding downstream node of business according to judging result.
7. device according to claim 6, which is characterized in that the sending module includes:
First transmission unit, for sending Packet Transport Network to the impacted corresponding downstream node of business according to judging result The operation management of PTN network and maintenance OAM warning message.
8. device according to claim 6, which is characterized in that the sending module includes:
Second transmission unit, for being corresponded to impacted business in the case where the judging result is out-of-limit there are error code Downstream node send for notify alarm generation warning message;It and/or in the judging result is error code out-of-limit disappearance In the case of, the warning message for notifying alarm to disappear is sent to the impacted corresponding downstream node of business.
9. device according to claim 8, which is characterized in that the sending module includes:
Third transmission unit carries Far End Bit Error for sending according to judging result to the impacted corresponding downstream node of business The message of out-of-limit instruction FEI, wherein it is for notifying alarm that the out-of-limit instruction of Far End Bit Error, which is used to indicate the warning message, The warning message of generation or for notify alarm disappear warning message.
10. the error detection system of POTN a kind of, which is characterized in that including the POTN as described in any one of claim 6 to 9 Device for detecting code error, further include downstream node, wherein the downstream node includes:
Parsing module, for being parsed to the OAM warning message in the case where warning message is OAM warning message;
Determining module is switched for determining whether to execute according to parsing result and pretection switch rule.
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PCT/CN2014/087117 WO2015192518A1 (en) 2014-06-18 2014-09-22 Error detection method, apparatus and system for potn
JP2016573757A JP2017518705A (en) 2014-06-18 2014-09-22 Bit error detection method, apparatus and system for packet optical transmission network

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