CN103973359B - Automatization test system, method and device are switched in a kind of OTN protection - Google Patents

Abstract

The invention discloses an OTN protection switching automatic test system, method and device, and relates to the field of OTN protection. The system includes a network management server software platform, a switch, a bit error analyzer, a fault detection device and at least one OTN device; the server software platform is connected to the error code analyzer and the fault detection device respectively through the switch; the error code analyzer, The fault detection device and at least one OTN device form a closed main line; the error code analyzer and at least one OTN device form a closed backup line; the fault detection device is a controllable power supply, an optical switch and a fault error bit at least one of the analyzers. The invention not only has wide test coverage and strong test versatility, but also has small test workload, high test efficiency and saves human resources.

Description

A kind of automatic test system, method and device of OTN protection switching

technical field

The invention relates to the field of OTN (Optical Transport Network, Optical Transport Network) protection, in particular to an OTN protection switching automatic test system, method and device.

Background technique

With the rapid development of optical communication technology, optical communication has developed from electrical layer network to optical layer network. OTN is a transport network based on WDM (Wavelength Division Multiplexing, wavelength division multiplexing) in the optical layer organization network; with the rapid growth of social information demand, OTN has become the main technical requirement of the next generation backbone transport network.

Due to the high rate and large capacity of optical signals transmitted in OTN, the survivability of OTN (the ability to maintain acceptable service quality after various failures or even disasters, that is, the ability of the network to resist failure) is better than that of ordinary electrical layer networks. more important. Among the various survivability technologies of the optical network, the survivability technology of the optical layer not only has the characteristics of fast response and flexibility, but also can effectively improve the service quality of the network and reduce the loss of services; therefore, OTN network protection (for the optical network Provide reserved protection resources for bearer services. When a network failure occurs, the affected services are arranged to be transmitted to a pre-allocated protection route to restore the affected services) It becomes more important for traditional optical network protection .

OTN network protection is often under the control of local network elements or remote network elements, without the intervention of external network management systems. The protection switching time of the OTN network protection refers to the time from when the system starts the protection switching action to when the protection switching is completed. The national standard requires ITU-T (International Telecommunication Union, International Telecommunication Union - Telecommunication Standardization Department, G.806 and G.798 Recommendations), without considering the delay time (HoldOff), the service damage time caused by OTN linear protection switching should be less than 50ms; therefore, the protection switching time is an important indicator of the OTN protection switching test.

At present, the test of OTN protection switching time is generally a manual test, and the judgment standard for whether the test is qualified is relatively fixed (different testers are divided into different judgment standards, and the judgment standard is generally 1 time point), not only the completion of the test The workload is large, human resources are consumed, and the test time is long, and the test efficiency is low.

Contents of the invention

Aiming at the defects existing in the prior art, the object of the present invention is to provide a kind of OTN protection switching automatic test system, method and device, not only the test coverage is wide, the test versatility is strong, and the workload of the test is small, and the test efficiency is relatively high. High, saving human resources.

In order to achieve the above object, the technical solution adopted by the present invention is: an automatic test system for OTN protection switching, including a network management server software platform, a switch, a bit error analyzer, a fault detection device and at least one OTN device; The software platform is respectively connected to the error code analyzer and the fault detection device through the switch; the code error analyzer, the fault detection device and at least one OTN device form a closed main line; the code error analyzer and at least one OTN device form a A closed backup circuit; the fault detection device is at least one of a controllable power supply, an optical switch and a fault error code analyzer;

The server software platform initializes the error code analyzer and the fault detection device, clears the collected data of the error code analyzer and the fault detection device, and the error code analyzer judges whether the fault detection device supports the automatic protection switching APS protocol, and if so, the network management software platform The APS protocol determines that the main line is idle, and the network management server software platform sends a control command to the fault detection device; otherwise, the first recovery waiting time of the network management server software platform is set, and after the first recovery waiting time passes, the fault error analyzer is determined No alarm information is issued, and the network management server software platform sends control instructions to the fault detection device;

After the fault detection device receives the control command, the fault detection device triggers the error code analyzer and OTN equipment to switch from the main line to the backup line for communication; The protocol determines that the main line is idle, and then go to the step of switching the error analyzer and OTN equipment from the backup line to the main line communication; otherwise, set the second recovery waiting time of the network management server software platform, and after the second recovery waiting time passes, It is determined that the error code analyzer has not issued an alarm message, and the code error analyzer and OTN equipment are switched from the standby line to the main line for communication;

After the bit error analyzer and OTN equipment switch from the backup line to the main line communication, the network management server software platform reads through the bit error analyzer: the first service interruption time SDT used by any OTN equipment to switch from the main line to the backup line 1. The second SDT used by any OTN equipment to switch from the standby line to the main line; the error code analyzer judges whether the first SDT and the second SDT are both less than the service loss time specified in the national standard, and if so, determines the automation of OTN equipment protection switching The test is successful; otherwise, it is determined that the OTN equipment protection switching automation test fails.

On the basis of the above technical solution, the number of the OTN equipment is 3: the first node OTN equipment, the relay point OTN equipment and the last node OTN equipment; the error code analyzer, the first node OTN equipment, the fault detection device, The OTN equipment at the relay point and the OTN equipment at the end node are connected end to end in order to form a main line; the error analyzer, the OTN equipment at the first node, the OTN equipment at the relay point, and the OTN equipment at the end node are connected end to end in order to form a backup line.

A kind of OTN protection switching automatic testing method based on above-mentioned system, comprises the following steps:

A. Initialize the error code analyzer and fault detection device, clear the collected data of the error code analyzer and fault detection device; judge whether the fault detection device supports the APS protocol, if so, go to step B, otherwise set the network management server software platform After the first recovery waiting time, after the first recovery waiting time, it is determined that the fault error code analyzer has not issued an alarm message, and then go to step C;

B. The network management software platform determines that the main line is idle through the APS protocol, and then go to step C;

C. The network management server software platform sends control instructions to the fault detection device, and the fault detection device triggers the error code analyzer and OTN equipment to switch from the main line to the standby line communication; judge whether the fault detection device supports the APS protocol, and if so, go to step D Otherwise, the second recovery waiting time of the network management server software platform is set, after the second recovery waiting time passes, it is determined that the fault error code analyzer does not send an alarm message, and then go to step E;

D. The network management software platform determines that the main line is idle through the APS protocol, and turns to step E;

E. The bit error analyzer and OTN equipment switch from the backup line to the main line communication, and the network management server software platform reads through the bit error analyzer: the first SDT used by any OTN equipment to switch from the main line to the backup line, any An OTN device is switched from the standby line to the second SDT used by the main line; judge whether the first SDT and the second SDT are both shorter than the service loss time specified in the national standard, and if so, determine that the OTN equipment protection switching automation test is successful; otherwise, go to step F;

F. It is determined that the OTN equipment protection switching automation test fails.

On the basis of the above technical solution, the collected data in step A includes historical alarm data and performance data; the first recovery waiting time in step A is 1 to 12 minutes; the first recovery waiting time in step A Afterwards, the following steps are also included: determine that the fault error code analyzer sends out an alarm message, and go to step F.

On the basis of the above-mentioned technical solution, step B also includes the following steps: the network management software platform judges that the main line is not in an idle state through the APS protocol, and re-executes step B; the APS protocol described in the step B determines that the main line is in an idle state The following process is included: it is determined that the high 4-bit byte of the APS protocol has received 0000b, and the main line is in an idle state.

On the basis of the above technical solution, the second recovery waiting time described in step C is 1 to 12 minutes, and after the second recovery waiting time described in step C passes, the following steps are also included: determining that the fault error code analyzer sends an alarm information, go to step F.

On the basis of the above technical solution, the fault detection device described in step C triggers the bit error analyzer and the OTN equipment to switch from the main line to the backup line communication including the following process:

When the fault detection device adopts a fault error code analyzer, after receiving the control instruction, the fault error code analyzer automatically sends out the alarm type corresponding to the control instruction, cuts off the connection of the main line, and the error code analyzer and OTN equipment are switched from the main line to alternate line communication;

When the fault detection device adopts an optical switch, after receiving the control command, the optical switch performs a fiber cut operation on the main line, and the bit error analyzer and OTN equipment switch from the main line to the backup line for communication;

When the fault detection device uses a controllable power supply, the controllable power supply stops the power supply of the main line after receiving the control command, and the error code analyzer and OTN equipment switch from the main line to the backup line for communication.

On the basis of the above-mentioned technical solution, step D also includes the following steps: the network management software platform judges that the main line is not in an idle state through the APS protocol, and re-executes step D; in the step D, the APS protocol determines that the main line is in an idle state and includes the following Process: Determine that the high 4-bit byte of the APS protocol has received 0000b, then the main line is in an idle state.

On the basis of the above-mentioned technical scheme, after the step F, the following steps are also included: the test result is imported into the test report; the network management server software platform outputs the abnormal dialog box of the detection device to locate the problem; after the problem location is completed, according to the parameters of the network management server software platform Set to determine whether to perform the next OTN protection switching test, if yes, go to step A, otherwise end.

An OTN protection switching automatic test device for realizing the above method, comprising a main line detection module, a first main line state judgment module, a main-standby line switching module, a second main line judging module, a standby-main line switching module and a test Failure judgment module;

The main line detection module is used for: initializing the error code analyzer and the fault detection device, clearing the collected data of the error code analyzer and the fault detection device; judging whether the fault detection device supports the APS protocol, and if so, sending the Use the line status judging module to send a judgment signal, otherwise set the first recovery waiting time of the network management server software platform, after the first recovery waiting time passes, it is judged that the fault error code analyzer has not issued an alarm message, and sends a master/standby line switch module switch signal;

The first active line state determination module is used for: after receiving the determination signal sent by the first active line state determination module, the control network management software platform determines that the active line is in an idle state through the APS protocol, and sends the active line to the active-standby line switching module. standby switching signal;

The main-standby line switching module is used for: after receiving the main-standby switching signal, control the network management server software platform to send control instructions to the fault detection device, and the fault detection device triggers the error code analyzer and OTN equipment to switch from the main line to the backup line for communication ; Judge whether the fault detection device supports the APS protocol, if so, send a judgment signal to the second main line judgment module; otherwise the second recovery waiting time of the network management server software platform is set, and after the second recovery waiting time passes, judge the fault error bit analysis If the instrument does not send out an alarm message, it sends a standby-master switching signal to the standby-master line switching module;

The second main line judging module is used for: after receiving the judgment signal sent by the main-standby line switching module, the control network management software platform judges that the main line is idle through the APS protocol, and sends a standby-master switching signal to the standby-main line switching module ;

Backup-master line switching module, used for: After receiving the backup-master switching signal, the bit error analyzer and OTN equipment switch from the backup line to the main line communication, and the network management server software platform reads through the bit error analyzer: any OTN device The first SDT used to switch from the main line to the backup line, and the second SDT used by any OTN equipment to switch from the backup line to the main line; determine whether the first SDT and the second SDT are both shorter than the service loss time stipulated in the national standard , if so, determine that the OTN equipment protection switching automation test is successful; otherwise, send a test failure signal to the test failure determination module;

The test failure judging module is used for: after receiving the test failure signal sent by the standby master line switching module, it is determined that the automatic test of the protection switching of the OTN equipment fails.

Compared with the prior art, the present invention has the advantages of:

(1) The fault detection device of the present invention includes at least one of a controllable power supply, an optical switch, and a fault bit error analysis. The present invention only needs to control the controllable power supply, an optical switch, or a fault bit error analysis to complete three types of OTN A protection switching test method; the optical switch can realize the OTN fiber break trigger protection switching test, and the controllable power switch can realize the OTN power failure trigger protection switching test. Therefore, the present invention can simulate different types of engineering faults (such as signal failure, node failure, signal degradation, etc.), not only does not need to manipulate the test equipment, the test process is relatively simple, and the test coverage is wide, and it can be matched to various test environments. Good performance, easy for people to use.

(2) When the present invention carries out OTN protection switching test, need not develop special equipment interface platform, as long as support (ITU-TG.709, G.873.1) agreement ODUkSNCP (OpticalChannelDataUnit, optical channel data unit; sub-networkconnectionprotection, sub-networkconnectionprotection, Network connection protection) devices with linear protection functions can complete the test. Therefore, the present invention has strong versatility, wide application range, and is convenient for people to use.

(3) Compared with manually performing the OTN protection switching test in the prior art, the present invention can automatically control the test process, facilitate the control management and intervention of the test personnel in the test process, simplify the test process of the test personnel, and reduce the intensity of the test work, Not only the usability is strong, but also the test efficiency is high, the workload of the test is small, and the human resources are saved.

(4) Compared with the manual OTN protection switching test in the prior art, because the present invention automatically performs the OTN protection switching test, the present invention can avoid the problem of inconsistency of test results caused by the difference in tester's technical ability. Therefore, the test precision of the present invention is higher, and the test result is more accurate.

(5) When the present invention performs the OTN protection switching test, if the OTN protection switching test fails, the network management server software platform pops up an abnormal dialog box for detecting equipment, which facilitates problem location and troubleshooting.

(6) when the present invention realizes and carries out OTN protection switching test, after realizing the test case of a kind of service rate (as 10Gbit/sSTM64 signal), can be transplanted to the automation test (Ethernet signal such as GE etc.) of other service rates simply, Therefore, the transplantation process of the present invention is relatively simple, and the portability is good.

Description of drawings

Fig. 1 is the connection block diagram of OTN protection switching automatic test system in the embodiment of the present invention;

Fig. 2 is a flowchart of an automatic testing method for OTN protection switching in an embodiment of the present invention.

detailed description

Referring to Fig. 1, the OTN protection switching automatic test system provided by the embodiment of the present invention includes a network management server software platform, a switch, a bit error analyzer, a fault detection device and at least one OTN device. The server software platform is respectively connected to the error code analyzer and the fault detection device through the switch; the code error analyzer, the fault detection device and at least one OTN device form a closed main line, and the code error analyzer and at least one OTN device form a A closed backup line.

The fault detection device in this embodiment is at least one of a controllable power supply, an optical switch, and a FTB500 fault error analyzer. There are three OTN devices: the first node OTN device, the relay point OTN device and the last node OTN device. The error code analyzer, the OTN equipment of the first node, the fault detection device, the OTN equipment of the relay point and the OTN equipment of the last node are connected end to end in order to form the main line; the code error analyzer, the OTN equipment of the first node, the OTN equipment of the relay point and the terminal Node OTN devices are connected end to end in sequence to form a backup line.

Referring to Fig. 2, the OTN protection switching automatic testing method provided by the embodiment of the present invention includes the following steps:

S1: Initialize the bit error analyzer and the fault detection device, and clear the data collected by the bit error analyzer and the fault detection device. The collected data includes historical alarm data and performance data.

S2: Determine whether the fault detection device supports the APS (Automatic Protection Switching, Automatic Protection Switching) protocol, if yes, go to step S3, otherwise go to step S4.

S3: the network management software platform judges whether the main line is in an idle state through the APS protocol. If the high 4-bit byte of the APS agreement does not receive 0000b, then the main line is in a fault state (that is, not an idle state), and step S3 is re-executed. Otherwise, the main line is idle, and go to step S5.

S4: Set the first recovery waiting time of the network management server software platform. The first recovery waiting time can be set to 1 to 12 minutes. In this embodiment, the first recovery waiting time is set to 3 minutes; after the first recovery waiting time passes, judge Whether the fault error code analyzer sends an alarm message, if not, go to step S5, otherwise go to step 11.

S5: The network management server software platform sends a control command to the fault detection device, and the fault detection device triggers the error code analyzer and the OTN equipment to switch from the main line to the standby line for communication, and then go to step S6.

When the fault detection device adopts a fault error code analyzer, after receiving the control instruction, the fault error code analyzer automatically sends out the alarm type corresponding to the control instruction, cuts off the connection of the main line, and the error code analyzer and OTN equipment are switched from the main line to alternate line communications.

When the fault detection device adopts an optical switch, the optical switch will cut the fiber of the main line after receiving the control command, and the bit error analyzer and OTN equipment will switch from the main line to the backup line for communication.

When the fault detection device uses a controllable power supply, the controllable power supply stops the power supply of the main line after receiving the control command, and the error code analyzer and OTN equipment switch from the main line to the backup line for communication.

S6: Determine whether the fault detection device supports the APS protocol, if yes, go to step S7, otherwise go to step S8.

S7: The network management software platform judges whether the main line is idle through the APS protocol, if not, re-execute step S7, otherwise go to step S9.

S8: Set the second recovery waiting time of the network management server software platform, the second recovery waiting time can be set to 1-12 minutes, and the second recovery waiting time is set to 3 minutes in this embodiment. After the second recovery waiting time has elapsed, it is judged whether the fault error code analyzer sends out an alarm message, if not, go to step S9, otherwise go to S11.

S9: The bit error analyzer and the OTN equipment switch from the backup line to the main line for communication, and go to step S10.

S10: The network management server software platform reads through the bit error analyzer: the first SDT (service interruption time) used by any OTN device to switch from the main line to the backup line, and the time used by any OTN device to switch from the backup line to the main line The second SDT. Judging whether the first SDT and the second SDT are less than the service loss time specified in the national standard, the service loss time is generally 50ms, if so, determine that the OTN equipment protection switching automation test is successful (qualified), import the test results into the test report, and end ; Otherwise go to step S11.

S11: It is determined that the OTN equipment protection switching automation test fails, and the test result is imported into the test report; the network management server software platform outputs a dialog box for detecting equipment exceptions, so as to keep the scene and locate the problem, and go to step S12.

S12: After the problem location is completed, judge whether to perform the next OTN protection switching test according to the parameter setting of the network management server software platform, if yes, go to step S1, otherwise end.

The OTN protection switching automatic test device in this embodiment includes an active line detection module, a first active line status determination module, an active/standby line switching module, a second active line determining module, a standby/active line switching module and a test failure Judgment module;

The main line detection module is used for: initializing the error code analyzer and the fault detection device, clearing the collected data of the error code analyzer and the fault detection device; judging whether the fault detection device supports the APS protocol, and if so, sending the Use the line status judging module to send a judgment signal, otherwise set the first recovery waiting time of the network management server software platform, after the first recovery waiting time passes, it is judged that the fault error code analyzer has not issued an alarm message, and sends a master/standby line switch module switch signal;

The first active line state determination module is used for: after receiving the determination signal sent by the first active line state determination module, the control network management software platform determines that the active line is in an idle state through the APS protocol, and sends the active line to the active-standby line switching module. standby switching signal;

The main-standby line switching module is used for: after receiving the main-standby switching signal, control the network management server software platform to send control instructions to the fault detection device, and the fault detection device triggers the error code analyzer and OTN equipment to switch from the main line to the backup line for communication ; Judge whether the fault detection device supports the APS protocol, if so, send a judgment signal to the second main line judgment module; otherwise the second recovery waiting time of the network management server software platform is set, and after the second recovery waiting time passes, judge the fault error bit analysis If the instrument does not send out an alarm message, it sends a standby-master switching signal to the standby-master line switching module;

The second main line judging module is used for: after receiving the judgment signal sent by the main-standby line switching module, the control network management software platform judges that the main line is idle through the APS protocol, and sends a standby-master switching signal to the standby-main line switching module ;

Backup-master line switching module, used for: After receiving the backup-master switching signal, the bit error analyzer and OTN equipment switch from the backup line to the main line communication, and the network management server software platform reads through the bit error analyzer: any OTN device The first SDT used to switch from the main line to the backup line, and the second SDT used by any OTN equipment to switch from the backup line to the main line; determine whether the first SDT and the second SDT are both shorter than the service loss time stipulated in the national standard , if so, determine that the OTN equipment protection switching automation test is successful; otherwise, send a test failure signal to the test failure determination module;

The test failure judging module is used for: after receiving the test failure signal sent by the standby master line switching module, it is determined that the automatic test of the protection switching of the OTN equipment fails.

The present invention is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered protection of the present invention. within range. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (10)

1. an automatization test system is switched in OTN protection, comprises that NM server software is flatPlatform, switch, 1 error analyzer, 1 failure detector and at least 1 OTN establishStandby; It is characterized in that: server software platform by switch respectively with error analyzer, eventBarrier checkout gear is connected; Error analyzer, failure detector and at least 1 OTN equipmentForm a closed primary circuit; Error analyzer and at least 1 OTN equipment form oneThe extension wire of bar closure; Described failure detector is controllable electric power, photoswitch and fault mistakeAt least one in code analyzer;

Server software platform initializes error analyzer and failure detector, will missThe image data of code analyzer and failure detector empties, and error analyzer failure judgement detectsWhether device supports APS APS agreement, and if so, webmastering software platform passes through APSAgreement judges that primary circuit is as idle condition, and NM server software platform is to failure detectorSending controling instruction; Otherwise being set, first of NM server software platform recovers the stand-by period,After treating for the first recovery stand-by period, judge that fault error analyzer does not send warning information, netPipe server software platform is to failure detector sending controling instruction;

Failure detector receives after control instruction, failure detector trigger error analyzer andOTN equipment is from primary line switching to extension wire communication; The inspection of error analyzer failure judgementSurvey device and whether support APS agreement, if so, webmastering software platform is judged by APS agreementPrimary circuit is idle condition, forwards step error analyzer and OTN equipment to from extension wireSwitch to primary line traffic; Otherwise second of NM server software platform is set to be recovered to wait forTime, after treating for the second recovery stand-by period, judge that fault error analyzer does not send alarm letterBreath, error analyzer and OTN equipment switch to primary line traffic from extension wire;

Error analyzer and OTN equipment from extension wire switches to primary line traffic, netPipe server software platform reads by error analyzer: any one OTN equipment is from primaryCircuit switching is to extension wire first service break period SDT, any one OTN usedEquipment switches to primary circuit the 2nd SDT used from extension wire; Error analyzer judgesWhether one SDT and the 2nd SDT are all less than the business debatable time that GB specifies, if so, trueDetermine OTN equipment protection and switch automatic test success; Otherwise definite OTN equipment protection is switchedAutomatic test failure.

2. automatization test system, its feature are switched in OTN protection as claimed in claim 1Be: the quantity of described OTN equipment is 3: first node OTN equipment, relay point OTNEquipment and end-node OTN equipment; Described error analyzer, first node OTN equipment, faultCheckout gear, relay point OTN equipment and end-node OTN equipment in turn head and the tail are connected to form masterWith circuit; Described error analyzer, first node OTN equipment, relay point OTN equipment and endNode OTN equipment in turn head and the tail is connected to form extension wire.

3. automation survey is switched in the protection of the OTN based on system described in claim 1 or 2Method for testing, is characterized in that, comprises the following steps:

A, error analyzer and failure detector are initialized, by error analyzer andThe image data of failure detector empties; Whether failure judgement checkout gear supports APS associationView, if so, forwards step B to, recovers to wait for otherwise put first of NM server software platformTime, after treating for the first recovery stand-by period, judge that fault error analyzer does not send alarm letterBreath, forwards step C to;

B, webmastering software platform judge that by APS agreement primary circuit, as idle condition, forwards toStep C;

C, NM server software platform are to failure detector sending controling instruction, and fault is examinedSurvey device triggering error analyzer and OTN equipment logical from primary line switching to extension wireLetter; Whether failure judgement checkout gear supports APS agreement, if so, forwards step D to; NoSecond of NM server software platform is set and recovers the stand-by period, treat that the second recovery etc. bides one's timeBetween after, judge that fault error analyzer does not send warning information, forward step e to;

D, webmastering software platform judge that by APS agreement primary circuit, as idle condition, forwards toStep e;

E, error analyzer and OTN equipment switch to primary line traffic from extension wire,NM server software platform reads by error analyzer: any one OTN equipment is from masterWith circuit switching to an extension wire SDT used, any one OTN equipment from for subsequent useCircuit switching is to primary circuit the 2nd SDT used; Judge that a SDT and the 2nd SDT areNoly all be less than the business debatable time that GB specifies, if so, determine that OTN equipment protection switchesAutomatic test success; Otherwise forward step F to;

F, determine that OTN equipment protection switches automatic test failure.

4. automated testing method, its feature are switched in OTN protection as claimed in claim 3Be: image data described in steps A comprises history alarm data and performance data; Steps ADescribed in first recover the stand-by period be 1～12 minute; Described in steps A, treat the first recoveryAfter the stand-by period, further comprising the steps of: judge that fault error analyzer sends warning information,Forward step F to.

5. automated testing method, its feature are switched in OTN protection as claimed in claim 3Be, step B is further comprising the steps of: webmastering software platform is judged main by APS agreementWith circuit be not idle condition, re-execute step B; The agreement of APS described in step B is sentencedFixed primary circuit is to comprise following flow process for idle condition: high 4 words of judging APS agreementJoint receives that 0000b, primary circuit are idle condition.

6. automated testing method, its feature are switched in OTN protection as claimed in claim 3Be, described in step C, the second recovery stand-by period was 1～12 minute, institute in step CAfter stating and treating for the second recovery stand-by period, further comprising the steps of: to judge fault error analyzerSend warning information, forward step F to.

7. automated testing method, its feature are switched in OTN protection as claimed in claim 3Be: the triggering error analyzer of failure detector described in step C and OTN equipment are from masterComprise following flow process with line switching to extension wire communication:

When failure detector is selected fault error analyzer, fault error analyzer receives to be controlledAfter instruction, automatically send the alarm type corresponding with control instruction, cut off the connection of primary circuit,Error analyzer is communicated by letter from primary line switching to extension wire with OTN equipment;

When failure detector is selected photoswitch, photoswitch receives after control instruction, to primary lineThe road fine operation of breaking, error analyzer and OTN equipment are from primary line switching to sidingRoad communication;

When failure detector is selected controllable electric power, controllable electric power receives after control instruction, stopsThe power supply of primary circuit, error analyzer and OTN equipment are from primary line switching to sidingRoad communication.

8. automated testing method, its feature are switched in OTN protection as claimed in claim 3Be, step D is further comprising the steps of: webmastering software platform is judged main by APS agreementWith circuit be not idle condition, re-execute step D; In step D, APS agreement is judged mainTo comprise following flow process for idle condition with circuit: high 4 bit bytes of judging APS agreement are receivedTo 0000b, primary circuit is idle condition.

9. automatic test side is switched in the protection of the OTN as described in claim 3 to 8 any oneMethod, is characterized in that, further comprising the steps of after step F: test result is directed into surveyExamination report; NM server software platform output detections unit exception dialog box, carries out problem and determinesPosition; After positioning problems finishes, arrange according to NM server software platform parameter, judge whetherCarry out OTN protection next time and switch test, if so, forward steps A to, otherwise finish.

10. an OTN protection that realizes method described in claim 4 to 9 any one is switchedAutomatic test device, is characterized in that: comprise primary line detection module, the first primary lineLine state determination module, master spare circuit handover module, the second primary circuit determination module, standby mainCircuit switching module and test crash determination module;

Primary line detection module, for: at the beginning of error analyzer and failure detector are carried outBeginningization, empties the image data of error analyzer and failure detector; Failure judgement detectsWhether device supports APS agreement, if so, sends to the first primary line status determination moduleDecision signal, recovers the stand-by period otherwise put first of NM server software platform, treats firstAfter recovering the stand-by period, judge that fault error analyzer does not send warning information, to active and standby lineRoad handover module sends active and standby switching signal;

The first primary line status determination module, for: receive the first primary line status and judgeAfter the decision signal that module sends, control webmastering software platform and judge primary by APS agreementCircuit is idle condition, sends active and standby switching signal to master spare circuit handover module;

Master spare circuit handover module, for: receive after active and standby switching signal, control network manager serviceDevice software platform is to failure detector sending controling instruction, and failure detector triggers error code and dividesAnalysing instrument communicates by letter from primary line switching to extension wire with OTN equipment; Failure judgement detects dressPut and whether support APS agreement, if so, send and judge letter to the second primary circuit determination moduleNumber; Recover the stand-by period otherwise second of NM server software platform is set, treat the second recoveryAfter the stand-by period, judge that fault error analyzer does not send warning information, cut to standby main lineDie change piece sends standby main switching signal;

The second primary circuit determination module, for: sentencing of master spare circuit handover module transmission receivedDetermine after signal, control webmastering software platform and judge that by APS agreement primary circuit is as idle shapeState, sends standby main switching signal to standby main line handover module;

Standby main line handover module, for: receive after standby main switching signal, error analyzer andOTN equipment switches to primary line traffic from extension wire, and NM server software platform is logicalCrossing error analyzer reads: any one OTN equipment is from primary circuit switching to extension wireA SDT used, any one OTN equipment switch to primary circuit institute from extension wireWith the 2nd SDT; Judge whether a SDT and the 2nd SDT are all less than the industry that GB specifiesIn the business debatable time, if so, determine that OTN equipment protection is switched automatic test successful; OtherwiseSend test crash signal to test crash determination module;

Test crash determination module, for: the test mistake that standby main line handover module sends receivedLose after signal, determine that OTN equipment protection is switched automatic test failed.