CN103229516A - Link test method and device - Google Patents
Link test method and device Download PDFInfo
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- CN103229516A CN103229516A CN2012800025614A CN201280002561A CN103229516A CN 103229516 A CN103229516 A CN 103229516A CN 2012800025614 A CN2012800025614 A CN 2012800025614A CN 201280002561 A CN201280002561 A CN 201280002561A CN 103229516 A CN103229516 A CN 103229516A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0287—Protection in WDM systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
Abstract
The invention provides a link test method and device, wherein the method includes: judging whether service crossing is configured in nodes; if no, then the crossing of test wave lengths is configured according to fiber-optic link relations in the nodes, and wave length paths which the wave lengths are in are obtained; acquiring a difference value of the power magnitudes at the entrance and exit of the wave length path which each of the wave lengths is in; and comparing the difference value and a preset threshold value and if the difference value is equal to the threshold value, then the abnormal information is reported. The above-mentioned method enables the problem, which exists in the prior art, that a reroute may fail if a circuit quality changes in a period of time from the performance verification of a rerouting path at a start stage to the rerouting which is needed when a failure happens to be solved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of chain circuit detecting method and device.
Background technology
Intensive multiplexed optical wave (Dense Wavelength Division Multiplexing, be called for short DWDM) be current modal photosphere networking technology, can realize the transfer capability of tens of ripples even ripples up to a hundred by multiplexing demultiplexing device, in jumbo like this network, reliability of service transmission must guarantee, ASON (Automatically Switched Optical Network, abbreviation ASON) the heavy-route characteristic can be carried out heavy-route to the fault business, satisfies professional high reliability transport demand.
Wavelength-division network is because there are a lot of physical constraints in light path, such as distance, optical fiber attenuation, device attenuation etc. can have influence on professional in this path transmission performances, the ASON heavy-route wants success, the physical constraint (as line hepatitis consumption, Optical Signal To Noise Ratio etc.) that must guarantee the path after the heavy-route is in tolerance interval, thereby performance meets the demands after guaranteeing professional heavy-route.
For the physical constraint that guarantees the path after the heavy-route in tolerance interval, can verify in advance possible heavy-route path at opening stage usually, be about to professional manual being switched to and carry out performance verification on this path; If can satisfy performance requirement, then switch back on the operating path again; If can not satisfy performance requirement, then carry out operations necessary, for example adjust link physical parameter (, perhaps changing the heavy-route path) as increasing electric relaying.And can there be a problem in this method, though treating the path of heavy-route exactly was verified in advance at opening stage, but the time of failure of network is at random, break down need heavy-route in, deterioration may take place in the performance in the path of before verifying, at this moment carry out the fault heavy-route and just might fail, because the path quality of this moment can not satisfy the service feature demand.
Summary of the invention
In view of this, the invention provides a kind of chain circuit detecting method and device, be used for solving prior art, take place to carry out heavy-route in the time period to fault at the manual performance verification that carries out the heavy-route path of opening stage, if variation taken place in line quality, the problem that may fail of heavy-route then.
The chain circuit detecting method that first aspect, the embodiment of the invention provide comprises:
In the decision node whether configuration service intersect, if configuration service intersects,, obtain the wavelength path at described test wavelength place then according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal;
Obtain the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
Described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
In conjunction with first aspect, in first kind of possible implementation, described method also comprises:
If configuration service has intersected, then according to the optical fiber connection relation of intranodal, dispose removing of described test wavelength remaining intersection described professional the intersection, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
In conjunction with first aspect and above-mentioned possible implementation, in second kind of possible implementation, described wavelength path is that the output port of the inlet image intensifer OA of described node arrives the path between the input port that exports OA.
In conjunction with first aspect and above-mentioned second kind of possible implementation, in the third possible implementation, the inlet of described wavelength path is the output port of described inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
In conjunction with first aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described method also comprises:
After the difference of the performance number at the entrance and exit place of the described wavelength path that obtains each the test wavelength place in the described test wavelength, cancel the intersection of the test wavelength of described configuration.
In conjunction with first aspect and above-mentioned possible implementation, in the 5th kind of possible implementation, the step of the difference of the performance number at the entrance and exit place of the described wavelength path that obtains each the test wavelength place in the described test wavelength comprises:
Optical property monitoring OPM unit by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
In conjunction with first aspect and above-mentioned possible implementation, in the 6th kind of possible implementation, before the step that whether configuration service intersects in the described decision node, described method also comprises:
Obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal wavelength-selective switches WSS.
In conjunction with first aspect and above-mentioned possible implementation, in the 7th kind of possible implementation, before the step that whether configuration service intersects in the described decision node, described method also comprises:
Determine described intra-node at least one the inlet OA laser opened.
The link detecting device that second aspect, the embodiment of the invention provide comprises:
Judging unit, whether being used in the decision node, configuration service intersects;
The wavelength path acquiring unit is used for when described judging unit determines that configuration service does not intersect, and according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal, obtains the wavelength path at described test wavelength place;
The difference acquiring unit is used for after described wavelength path acquiring unit obtains described wavelength path, obtains the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
Report the unit, be used for after described difference acquiring unit obtains described difference, described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
In conjunction with second aspect, in first kind of possible implementation, described wavelength path acquiring unit also is used for
When described judging unit determines that configuration service intersects, according to the optical fiber connection relation of intranodal, dispose removing of described test wavelength remaining intersection described professional the intersection, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
In conjunction with second aspect and above-mentioned possible implementation, in second kind of possible implementation, described wavelength path is that the output port of the inlet image intensifer OA of described node arrives the path between the input port that exports OA.
In conjunction with second aspect and second kind of possible implementation, in the third possible implementation, the inlet of described wavelength path is the output port of described inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
In conjunction with second aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described device also comprises:
The cancellation unit is used for cancelling the intersection of the test wavelength of described configuration after described difference acquiring unit obtains described difference.
In conjunction with second aspect and above-mentioned possible implementation, in the 5th kind of possible implementation, described difference acquiring unit specifically is used for
Optical property monitoring OPM unit by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
In conjunction with second aspect and above-mentioned possible implementation, in the 6th kind of possible implementation, described device also comprises:
The optical fiber connection relation acquiring unit, be used at described judgment unit judges intranodal before whether configuration service intersects, obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal wavelength-selective switches WSS.
In conjunction with second aspect and above-mentioned possible implementation, in the 7th kind of possible implementation, described device also comprises:
Determining unit is used at described judgment unit judges intranodal before whether configuration service intersects, and determines that the laser of at least one inlet OA of described intra-node is opened.
As shown from the above technical solution, chain circuit detecting method of the present invention and device, intersection by the configuration testing wavelength, obtain the wavelength path at described test wavelength place, the performance number at the entrance and exit place of the wavelength path by obtaining each test wavelength place, change with the attenuation that detects wavelength path, and then the variation of detection line quality, can solve preferably in the prior art at the manual performance verification that carries out the heavy-route path of opening stage, take place to carry out heavy-route in the time period to fault, if variation taken place in line quality, the problem that may fail of heavy-route then.
Description of drawings
In order to be illustrated more clearly in technical scheme of the present invention, to do one to the accompanying drawing of required use among the embodiment below introduces simply, apparently: following accompanying drawing is the accompanying drawing of some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain to realize equally other accompanying drawing of technical solution of the present invention according to these accompanying drawings.
The structural representation of the optical channel that Fig. 1 provides for an embodiment in the prior art;
The structural representation of the optical channel that Fig. 2 provides for an embodiment among the present invention;
The enlarged diagram of a node of the optical channel that Fig. 3 provides for an embodiment among the present invention;
The schematic flow sheet of the chain circuit detecting method that Fig. 4 provides for an embodiment among the present invention;
The schematic flow sheet of the chain circuit detecting method that Fig. 5 provides for an embodiment among the present invention;
The structural representation of the link detecting device that Fig. 6 provides for an embodiment among the present invention;
The structural representation of the link detecting device that Fig. 7 provides for an embodiment among the present invention;
The structural representation of the link detecting device that Fig. 8 provides for an embodiment among the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, technical scheme of the present invention is clearly and completely described below in conjunction with the accompanying drawing in the embodiment of the invention.Obviously, each following embodiment is the embodiment of a part of the present invention.Based on each following embodiment of the present invention, those of ordinary skills are even without making creative work, also can be by equivalent transformation part even whole technical characterictics, and obtain to solve the technology of the present invention problem, realize other embodiment of the technology of the present invention effect, and these conversion and each embodiment of coming does not obviously break away from scope disclosed in this invention.
Of the prior artly take place to carry out heavy-route in the time period to fault for solving, variation has taken place, then the problem that may fail of heavy-route as if line quality at the manual performance verification that carries out the heavy-route path of opening stage.The insider also proposes another solution, as shown in Figure 1, and when treating that there is business in the heavy-route path, can judge upper level image intensifer (Optical amplifier, be called for short OA) (, be called for short EDFA as Erbium-doped Optical Fiber Amplifier
Erbium-doped fiber amplifier) the Output optical power and the difference of the input optical power of next stage OA judge line hepatitis consumption whether unusual (the part path shown in arrow among Fig. 1 between two OA).That is, the variation of the difference of the input optical power of Output optical power by previous OA and next OA judges whether this section light path has unusually.
Yet said method can't judge that one of them passage takes place to judge also that unusually in other words which passage has taken place unusually, when treating that the heavy-route path does not have business, also has no idea to judge simultaneously.That is to say, to single channel (being each wavelength channel) unusually without any processing method.
The embodiment of the invention can be in real time or regularly the circuit of off-duty business is still carried out quality testing, if line quality is unusual, then the informing network administrative unit is in time handled, promptly send unexpected message, so that network management unit is handled fault in the above-mentioned circuit according to unexpected message to the network mesh administrative unit.
In addition, referring to shown in Figure 2, describe for convenient, the embodiment of the invention is divided into two parts with network, and circuit pack and node section have wherein illustrated two circuit packs and 3 node section (Node 1, Node 2, Node 3) among Fig. 2.The embodiment of the invention at be the detection method of the link-quality problem of intra-node.
Generally, node is responsible for input signal is carried out certain processing, as cross scheduling, and output then.
So-called intra-node link, the output port that is defined as inlet OA in embodiments of the present invention is to the link between the input port of outlet OA.Thereby may form multiple combination between a plurality of input ports and the delivery outlet and form many possible paths, for example, an operation wavelength from the output port of inlet OA to the i.e. wavelength path of this operation wavelength in path the input port of outlet OA.To the path the input port of outlet OA, a plurality of wavelength paths can be arranged from the output port of inlet OA.
Above-mentioned Fig. 2 only is an example of network, network in the practical application is than (the Wavelength Selective Switch of the wavelength-selective switches shown in Fig. 2, be called for short WSS), the OA device is more more, is conveniently to understand, above-mentioned Fig. 2 only illustrates the part of OA and WSS.In other embodiments, above-mentioned WSS can also adopt wavelength multiplexing/demultiplexing unit to replace.
Generally, an intra-node has the input of a plurality of directions and the output of a plurality of directions, describe with a node among above-mentioned Fig. 2, as shown in Figure 3, this node has comprised the inlet of three directions and the outlet of three directions, middle WSS can realize the scheduling of different wave length passage, and promptly the wavelength that the different directions inlet can be come is dispatched to the outlet of different directions respectively.Same Way in may comprise a plurality of wavelength, and these a plurality of wavelength all can be toward any direction scheduling of outlet.How the inner link that illustrates this intra-node with the node among Fig. 3 realizes quality evaluation.
Fig. 4 shows the schematic flow sheet of the chain circuit detecting method that one embodiment of the invention provides; As shown in Figure 4, the chain circuit detecting method in the present embodiment is as described below.
201, in the decision node whether configuration service intersect, if configuration service intersects,, obtain the wavelength path at described test wavelength place then according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal.
For instance, the test wavelength can be the interior all or part of wavelength of operating wavelength range that system supports.Above-mentioned wavelength path can be a wavelength path, also can be a plurality of wavelength paths.
In the present embodiment, above-mentioned wavelength path is that the output port of inlet OA of described node is to the path between the input port of outlet OA.
Optical fiber connection relation is the physical connection relation of optical fiber, and in Fig. 3, the optical fiber on the WSS port one links to each other with the port 3 of other WSS3 '.
202, obtain the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength.
For instance, above-mentioned performance number can be noise power-value.
In the present embodiment, the inlet of wavelength path is the output port of inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
In conjunction with shown in Figure 3, for instance, above-mentioned step 202 can be specific as follows:
Optical property monitoring (Optical Performance Monitor is called for short OPM) unit by inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
For instance, first performance number can be first noise power-value, and second performance number can be second noise power-value.
In Fig. 3, the OPM unit belongs to the structure of OA, and in other embodiments, possible OPM unit and OA are separately independent, and present embodiment does not limit it.This place can be that the OPM unit by the porch detects first performance number, and the OPM unit by the exit detects second performance number.
203, described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
For instance, can report unexpected message, make network management unit or control plane etc. repair above-mentioned unusual wavelength path to network management unit or control plane etc.
If difference is less than described threshold value, then accountable be the physical constraint of wavelength path of this intranodal in tolerance interval, can guarantee professional heavy-route after performance can meet the demands, and then business can be carried out reliability transmission in the heavy-route path.
Need to prove that the wavelength path in the present embodiment also can be described as the wavelength channel section, one or more wavelength paths belong to the inner link of intranodal.
Certainly, obtain in the step 202 after the difference of performance number at entrance and exit place of wavelength path at each the test wavelength place in the described test wavelength, can be with the intersection cancel all of the test wavelength of described configuration.
Especially, in actual applications, can regularly repeat above-mentioned chain circuit detecting method shown in Figure 4.
Chain circuit detecting method in the present embodiment, intersection by the configuration testing wavelength, obtain testing the wavelength path at wavelength place, the performance number such as the noise power-value at the entrance and exit place of the wavelength path by obtaining each test wavelength place, change with the attenuation that detects wavelength path, and then the variation of detection line quality, can solve preferably in the prior art at the manual performance verification that carries out the heavy-route path of opening stage, take place to carry out heavy-route in the time period to fault, if variation taken place in line quality, the problem that may fail of heavy-route then.
Thus, it is unusual that above-mentioned chain circuit detecting method can also detect helping secretly of backup path (being pre-set path or potential heavy-route path) in advance, avoids possible heavy-route failure.
In the application scenarios of reality, possible backup path exists professional, and at this moment, chain circuit detecting method can be as shown in Figure 5, and the chain circuit detecting method in the present embodiment is as follows:
301, in the decision node whether configuration service intersect, if configuration service intersects, then according to the optical fiber connection relation of intranodal, dispose remaining intersection except that described professional intersection of described test wavelength, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
Above-mentioned wavelength path is that the output port of the inlet OA of described node arrives the path between the input port that exports OA.
302, obtain the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength.
For instance, professional performance number of intersecting corresponding wavelength path is the signal power value, and the performance number of the wavelength path that remaining intersection is corresponding can be noise power-value.
303, described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
In conjunction with Fig. 3, carry out above-mentioned step 301, for example, the optical fiber connection relation that obtains inlet 1 and other each outlets (1 ', 2 ', 3 ') intersects with the business that relates to all WSS, and the business that record has been configured is intersected.
The optical fiber connection relation at this place is the optical fiber connection relation of intranodal WSS.1 port as WSS1 links to each other with 1 port of WSS1 ', and 2 ports of WSS1 link to each other with 1 port of WSS2 ', and 3 ports of WSS1 link to each other with 3 ports of WSS3 '.
The wavelength cross reference that above-mentioned business intersection has configured for the user, thus, remaining intersection except that professional intersection the (being the intersection of ROADM in the configuration node) according to above-mentioned optical fiber connection relation configuration testing wavelength, this remaining intersection (being non-professional the intersection) can not be intersected with business and be conflicted, obtain wavelength path, to carry out follow-up step 302 and step 303.
WSS shown in the earlier figures 3 is reconstructable OADM equipment a kind of implementation of (Reconfigurable Optical Add/Drop Multiplexer is called for short ROADM).
It is unusual that above-mentioned chain circuit detecting method can detect helping secretly of pre-set path or potential heavy-route path in advance, avoids possible heavy-route failure, can realize the beginning and the dilatation of link simultaneously.
Certainly, above-mentioned Fig. 4 and chain circuit detecting method shown in Figure 5 also comprise following not shown step S01.
After the difference of the performance number at the entrance and exit place of S01, the described wavelength path that obtains each the test wavelength place in the described test wavelength, cancel the intersection of the test wavelength of described configuration.
In the present embodiment, if configuration service does not intersect, then the intersection of Pei Zhi test wavelength is all intersections of test wavelength;
If configuration service has intersected, the intersection of other then the intersection of configuration testing wavelength is tested promptly that removing of wavelength is professional and intersected, promptly non-professional intersection.
Be understandable that, after getting access to aforesaid first performance number and second performance number, can cancel the intersection of the test wavelength of described configuration.
In conjunction with shown in Figure 3, if configuration testing wavelength 1 comprises to the intersection of test wavelength 40 correspondences: the in mouth of WSS1 is to 1 mouthful of WSS1,1 mouthful of 1 mouthful of arriving WSS1 ' of WSS1,1 mouthful of out mouth of WSS1 ' to WSS1 ', then obtain a wavelength path, obtain first performance number and second performance number of wavelength 1 this moment, and the difference and the preset threshold value of first performance number and second performance number compared; Successively, obtain first performance number and second performance number of test wavelength 2 to test wavelength 40, and relatively with the difference of first performance number and second performance number and preset threshold value, as long as the difference that test first performance number of wavelength and second performance number are arranged then can directly report the unexpected message of this wavelength path more than or equal to preset threshold value to network management unit.
Further, before the step 201 in above-mentioned chain circuit detecting method shown in Figure 4, chain circuit detecting method also comprises unshowned step 201a among following Fig. 4:
201a, determine described intra-node at least one the inlet OA laser opened.That is to say check whether the laser of the inlet OA of described intra-node is opened,, then open described laser if described laser is not opened.
In addition, in embodiments of the present invention, check that laser step of opening and the step of obtaining the business intersection that has disposed can exchange, present embodiment does not limit it.That is to say, in other embodiments, can obtain the business that has disposed earlier and intersect, open laser again.
In actual applications, laser can make it open or cut out by software configuration command.
Correspondingly, before the step 301 in Fig. 5, also need to carry out above-mentioned step 201a.
In conjunction with shown in Figure 3, open the laser among the OA1, the wavelength path at each test wavelength place is monitored to 303 according to above-mentioned step 301, after having monitored, close the laser among the OA1, cancel remaining intersection except that professional intersection the (being non-professional the intersection) simultaneously at the test wavelength among the OA1; Open the laser among the OA2, the wavelength path at each test wavelength place is monitored to 303 according to above-mentioned step 301, after having monitored, close the laser among the OA2, remaining intersection except that professional intersection of cancelling simultaneously at the test wavelength among the OA2 is non-professional the intersection; Open the laser among the OA3, the wavelength path at each test wavelength place is monitored to 303 according to above-mentioned step 301, after having monitored, close the laser among the OA3, and remaining intersection except that professional intersection of cancelling at the test wavelength among the OA3 is non-professional the intersection.
Below illustrate with OA1-WSS1-WSS1 '-OA1 ', be understandable that, when the path of backup path/treat heavy-route does not have business, based on the optical fiber connection relation of intra-node, the laser of a Way in OA of positive opening, as open the laser of OA1; Dispose 1 mouthful the intersection of the In mouth of WSS1 this moment to WSS1, intersection can be tested wavelength by corresponding one or more, such as the pairing intersection of test wavelength that can dispose Lambda1～Lambda40 (being that wavelength 1 is to wavelength 40), according to optical fiber connection relation, 1 mouthful of 1 mouthful of WSS1 and WSS1 ' links to each other, disposes 1 mouthful of intersection to the OUT mouth of WSS1 ' of WSS1 ' again.
And then, obtain first performance number of porch by the OPM1 unit of OA1, OPM1 ' the unit that passes through OA1 ' obtains second performance number in exit, calculate the difference of the performance number in porch and exit, the difference of this difference and preset threshold value relatively, if difference surpasses preset threshold value, report unexpected message to network management unit.
Intersection based on above-mentioned configuration, obtain first performance number of Lambda1～Lambda40 on the OA1 output port by OPM1, pass through OPM1 ' and obtain second performance number of Lambda1～Lambda40 on OA1 ' input port, the difference that compares the two, if difference surpasses preset threshold value, then report unexpected message to network management unit.
At last, the laser among the OA1 cuts out, and cancel intersect corresponding of above-mentioned configuration, to the above-mentioned identical action of OA (as OA2 and OA3) execution of other Way ins, up to having traveled through all directions with Lambda1～Lambda40.
Need to prove that in cross-over configuration and the process that comes into force, if there is new professional cross-over configuration order to issue, the professional intersection and the intersection of the test wavelength of configuration when conflict is arranged, the intersection of the test wavelength of cancellation configuration is automatically intersected with business and to be as the criterion.
Chain circuit detecting method does not need to increase extra equipment such as light source in the present embodiment, and single station can be handled, simple and flexible.
In actual applications, periodically repeat the step of a plurality of passages on the backup path of above-mentioned detection node inside, promptly repeat the step of above-mentioned Fig. 4 or chain circuit detecting method shown in Figure 5.
According to a further aspect in the invention, the embodiment of the invention also provides a kind of link detecting device, and as shown in Figure 6, this link detecting device comprises: judging unit 61, wavelength path acquiring unit 62, difference acquiring unit 63 and report unit 64;
Wherein, whether judging unit 61 is used in the decision node that configuration service intersects;
Wavelength path acquiring unit 62 is used for when described judging unit 61 determines that configuration services do not intersect, and according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal, obtains the wavelength path at described test wavelength place;
For instance, wavelength path acquiring unit 62 also is used for, when described judging unit 61 determines that configuration service intersects, optical fiber connection relation according to intranodal, dispose remaining intersection except that described professional intersection of described test wavelength, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
At this moment, difference acquiring unit 63 is used for after described wavelength path acquiring unit 62 obtains described wavelength path, obtains the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
For instance, above-mentioned wavelength path can be the output port of inlet image intensifer OA of described node to the path between the input port of outlet OA.The inlet of wavelength path is the output port of described inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
Again for instance, described difference acquiring unit 63 specifically is used for, and the OPM unit by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength; OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength; Described first performance number and described second performance number are subtracted each other, obtain described difference.
In a kind of application scenarios, as shown in Figure 7, above-mentioned link detecting device also can comprise cancellation unit 65, and this cancellation unit 65 is used for cancelling the intersection of the test wavelength of described configuration after described difference acquiring unit 63 obtains described difference.
In the Another Application scene, above-mentioned link detecting device also can comprise not shown optical fiber connection relation acquiring unit 66, this optical fiber connection relation acquiring unit 66 is used in described judging unit 61 decision node before whether configuration service intersects, obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal WSS.
In an application scenarios again, above-mentioned link detecting device also can comprise not shown order really unit 67, this determining unit 67 is used in described judging unit 61 decision node before whether configuration service intersects, and determines that the laser of at least one inlet OA of described intra-node is opened.
Link detecting device in the present embodiment, get access to the wavelength path at test wavelength place by judging unit and wavelength path acquiring unit, obtain the performance number at the entrance and exit place of each wavelength path of testing the wavelength place by the difference acquiring unit, change with the attenuation that detects wavelength path, and then the variation of detection line quality, can solve preferably in the prior art at the manual performance verification that carries out the heavy-route path of opening stage, take place to carry out heavy-route in the time period to fault, if variation taken place in line quality, the problem that may fail of heavy-route then.
According to a further aspect in the invention, the embodiment of the invention also provides a kind of link detecting device, and this link detecting device comprises: memory 81, processor 82 and transmitter 83;
Wherein, 82 couplings of memory 81 and processor, this memory 81 is used to store the information of the program routine that comprises that described processor 82 is performed;
Described processor 82 is coupled with memory 81, transmitter 83 respectively, is used to control the execution of described program routine, specifically comprises:
In the decision node whether configuration service intersect, if configuration service intersects,, obtain the wavelength path at described test wavelength place then according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal;
Obtain the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
Described difference and the threshold value that presets are compared;
When described transmitter 83 is used for the difference obtained at processor 82 more than or equal to described threshold value, report unexpected message.
In a kind of realization scene, whether described processor 82 also be used in the decision node, and configuration service intersects, when determining that configuration service intersects, optical fiber connection relation according to intranodal, dispose remaining intersection except that described professional intersection of described test wavelength, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
In the present embodiment, described wavelength path is that the output port of described node inlet OA is to the path between the input port of outlet OA.The inlet of described wavelength path is the output port of inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
In actual applications, processor 82 also is used for cancelling the intersection of the test wavelength of described configuration after the difference of the performance number at the entrance and exit place of the wavelength path at each the test wavelength place that obtains described test wavelength.
In a kind of optional application scenarios, described processor 82 is used for obtaining the step of difference of performance number at entrance and exit place of wavelength path at each test wavelength place of described test wavelength, is specially:
The OPM unit of described processor 82 by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
In the optional application scenarios of another kind, described processor 82 is used in decision node before whether configuration service intersects, also be used to obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal WSS.
Perhaps, described processor 82 is used in decision node before whether configuration service intersects, and determines that the laser of at least one inlet OA of described intra-node is opened.
Link detecting device in the present embodiment, the information that comprises the program routine that described processor is performed by memory stores, and then control the execution of described program routine with the processor of memory coupling, to obtain the wavelength path at test wavelength place, and then obtain the performance number at entrance and exit place of the wavelength path at each test wavelength place, change in order to the attenuation that detects wavelength path, and then the variation of detection line quality, can solve preferably in the prior art at the manual performance verification that carries out the heavy-route path of opening stage, take place to carry out heavy-route in the time period to fault, if variation taken place in line quality, the problem that may fail of heavy-route then.
Thus, it is unusual that above-mentioned link detecting device can also detect helping secretly of backup path (being pre-set path or potential heavy-route path) in advance, avoids possible heavy-route failure.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be finished by the relevant hardware of program command.Aforesaid program can be stored in the computer read/write memory medium.This program is carried out the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (16)
1. a chain circuit detecting method is characterized in that, comprising:
In the decision node whether configuration service intersect, if configuration service intersects,, obtain the wavelength path at described test wavelength place then according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal;
Obtain the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
Described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
2. method according to claim 1 is characterized in that, also comprises:
If configuration service has intersected, then according to the optical fiber connection relation of intranodal, dispose removing of described test wavelength remaining intersection described professional the intersection, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
3. method according to claim 1 and 2 is characterized in that, described wavelength path is that the output port of the inlet image intensifer OA of described node arrives the path between the input port that exports OA.
4. method according to claim 3 is characterized in that, the inlet of described wavelength path is the output port of described inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
5. according to the arbitrary described method of claim 1 to 4, it is characterized in that, also comprise:
After the difference of the performance number at the entrance and exit place of the described wavelength path that obtains each the test wavelength place in the described test wavelength, cancel the intersection of the test wavelength of described configuration.
6. according to the arbitrary described method of claim 1 to 5, it is characterized in that the step of the difference of the performance number at the entrance and exit place of the described wavelength path that obtains each the test wavelength place in the described test wavelength comprises:
Optical property monitoring OPM unit by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
7. according to the arbitrary described method of claim 1 to 6, it is characterized in that, before the step that whether configuration service intersects in the described decision node, also comprise:
Obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal wavelength-selective switches WSS.
8. according to the arbitrary described method of claim 1 to 7, it is characterized in that, before the step that whether configuration service intersects in the described decision node, also comprise:
Determine described intra-node at least one the inlet OA laser opened.
9. a link detecting device is characterized in that, comprising:
Judging unit, whether being used in the decision node, configuration service intersects;
The wavelength path acquiring unit is used for when described judging unit determines that configuration service does not intersect, and according to the intersection of the optical fiber connection relation configuration testing wavelength of described intranodal, obtains the wavelength path at described test wavelength place;
The difference acquiring unit is used for after described wavelength path acquiring unit obtains described wavelength path, obtains the difference of performance number at entrance and exit place of the wavelength path at each the test wavelength place in the described test wavelength;
Report the unit, be used for after described difference acquiring unit obtains described difference, described difference and the threshold value that presets are compared, if described difference more than or equal to described threshold value, then reports unexpected message.
10. device according to claim 9 is characterized in that, described wavelength path acquiring unit also is used for
When described judging unit determines that configuration service intersects, according to the optical fiber connection relation of intranodal, dispose removing of described test wavelength remaining intersection described professional the intersection, and described remaining intersect and described business intersection is not conflicted;
Described professional the intersection and described remaining combined crosswise, obtain the wavelength path at described test wavelength place.
11., it is characterized in that described wavelength path is that the output port of the inlet image intensifer OA of described node arrives the path between the input port that exports OA according to claim 9 or 10 described devices.
12. device according to claim 11 is characterized in that, the inlet of described wavelength path is the output port of described inlet OA, and the outlet of described wavelength path is the input port of described outlet OA.
13. according to the arbitrary described device of claim 9 to 12, it is characterized in that, also comprise:
The cancellation unit is used for cancelling the intersection of the test wavelength of described configuration after described difference acquiring unit obtains described difference.
14., it is characterized in that described difference acquiring unit specifically is used for according to the arbitrary described device of claim 9 to 13
Optical property monitoring OPM unit by described wavelength path inlet OA obtains first performance number of porch of the wavelength path at each the test wavelength place in the described test wavelength;
OPM unit by described wavelength path outlet OA obtains second performance number in exit of the wavelength path at each the test wavelength place in the described test wavelength;
Described first performance number and described second performance number are subtracted each other, obtain described difference.
15. according to the arbitrary described device of claim 9 to 14, it is characterized in that, also comprise:
The optical fiber connection relation acquiring unit, be used at described judgment unit judges intranodal before whether configuration service intersects, obtain the optical fiber connection relation of the inner link place port of described intranodal, described optical fiber connection relation is the optical fiber connection relation of described intranodal wavelength-selective switches WSS.
16. according to the arbitrary described device of claim 9 to 15, it is characterized in that, also comprise:
Determining unit is used at described judgment unit judges intranodal before whether configuration service intersects, and determines that the laser of at least one inlet OA of described intra-node is opened.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2012/086429 WO2014089772A1 (en) | 2012-12-12 | 2012-12-12 | Link detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103229516A true CN103229516A (en) | 2013-07-31 |
| CN103229516B CN103229516B (en) | 2016-11-30 |
Family
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812701A (en) * | 2014-02-18 | 2014-05-21 | 合肥工业大学 | Intersection conflict preprocessing method based on business flow parameters in network on chip |
| WO2017177558A1 (en) * | 2016-04-12 | 2017-10-19 | 中兴通讯股份有限公司 | Light path diagnostic method and device |
| CN107332608A (en) * | 2017-05-27 | 2017-11-07 | 烽火通信科技股份有限公司 | A kind of string ripple warning system and method based on coherent light communication |
| CN107566036A (en) * | 2016-06-30 | 2018-01-09 | 瞻博网络公司 | Mistake in automatic detection communication and automatically determine the wrong source |
| CN111010629A (en) * | 2019-12-24 | 2020-04-14 | 电信科学技术第五研究所有限公司 | Optical cross network connection detection method, device, storage medium and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141217A (en) * | 2007-01-22 | 2008-03-12 | 中兴通讯股份有限公司 | Automatic test system and method of wavelength selection system |
| CN101192887A (en) * | 2007-07-25 | 2008-06-04 | 中兴通讯股份有限公司 | An automatic testing system and method for wave length selection switch |
| CN101521543A (en) * | 2009-03-20 | 2009-09-02 | 浙江工业大学 | Passive optical network trunk optical fibre link protecting device |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141217A (en) * | 2007-01-22 | 2008-03-12 | 中兴通讯股份有限公司 | Automatic test system and method of wavelength selection system |
| CN101192887A (en) * | 2007-07-25 | 2008-06-04 | 中兴通讯股份有限公司 | An automatic testing system and method for wave length selection switch |
| CN101521543A (en) * | 2009-03-20 | 2009-09-02 | 浙江工业大学 | Passive optical network trunk optical fibre link protecting device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103812701A (en) * | 2014-02-18 | 2014-05-21 | 合肥工业大学 | Intersection conflict preprocessing method based on business flow parameters in network on chip |
| CN103812701B (en) * | 2014-02-18 | 2018-03-09 | 合肥工业大学 | A kind of intersection conflict preprocess method based on traffic flow parameters in network-on-chip |
| WO2017177558A1 (en) * | 2016-04-12 | 2017-10-19 | 中兴通讯股份有限公司 | Light path diagnostic method and device |
| CN107566036A (en) * | 2016-06-30 | 2018-01-09 | 瞻博网络公司 | Mistake in automatic detection communication and automatically determine the wrong source |
| US10404570B2 (en) | 2016-06-30 | 2019-09-03 | Juniper Networks, Inc. | Automatically detecting an error in a communication and automatically determining a source of the error |
| CN107566036B (en) * | 2016-06-30 | 2020-08-04 | 瞻博网络公司 | Automatically detecting an error in a communication and automatically determining a source of the error |
| CN107332608A (en) * | 2017-05-27 | 2017-11-07 | 烽火通信科技股份有限公司 | A kind of string ripple warning system and method based on coherent light communication |
| CN107332608B (en) * | 2017-05-27 | 2019-09-27 | 烽火通信科技股份有限公司 | A kind of string wave warning system and method based on coherent light communication |
| CN111010629A (en) * | 2019-12-24 | 2020-04-14 | 电信科学技术第五研究所有限公司 | Optical cross network connection detection method, device, storage medium and equipment |
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|---|---|
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