CN102652399B - Redundant backup method and system for optical interface circuit board and optical interface circuit boards thereof - Google Patents
Redundant backup method and system for optical interface circuit board and optical interface circuit boards thereof Download PDFInfo
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- CN102652399B CN102652399B CN201080003330.6A CN201080003330A CN102652399B CN 102652399 B CN102652399 B CN 102652399B CN 201080003330 A CN201080003330 A CN 201080003330A CN 102652399 B CN102652399 B CN 102652399B
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- wiring board
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- combining apparatus
- optical interface
- splitting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
Abstract
A redundant backup method and system for an optical interface circuit board and optical interface circuit boards thereof are provided by the present invention. Said method includes the following steps: connecting the optical interfaces of the light splitting end in the light splitter/combiner to the main circuit board and the backup circuit board of the main circuit board respectively; performing fault detection for the main circuit board; turning off the optical interface connected to the light splitter/combiner in the main circuit board when a fault occurs on the main circuit board, and turning on the optical interface which is connected to the light splitter/combiner in the backup circuit board and corresponding to the main circuit board; receiving the data signal which is originally sent to the main circuit board or sending the optical signal which needs to be sent by the main circuit board through the optical interface in the backup circuit board.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of redundancy backup method, system and optical interface wiring board of optical interface wiring board.
Background technology
Development along with communication and electronic technology, the complexity of communication equipment chips scale and wiring board is being multiplied, the global failure rate of wiring board is also being multiplied, this is because the capacity of wiring board is larger, integrated level is higher, just more easily break down, and the harm that fault causes is also larger.For communication equipment, often reliability requires up to 99.999%, and even 99.9999%, if only depend on the inherent reliability that improves wiring board or chip can not reach above-mentioned reliability requirement.
Current communication equipment, as router, switch, often adopts distributed system architecture, and typical system as shown in Figure 1.In this system architecture, mainly comprise: some wiring boards for the treatment of communication message, polylith for the network board of exchanges data between wiring board and two or polylith for controlling the master control borad of each veneer operation.Each veneer takies a groove position, generally can install at the scene and change.Wherein, between network board, there is mutually redundant relation, between two master control borads, also there is active and standby redundancy backup ability, but wiring board does not often possess the relation of backuping each other, if a wiring board breaks down, the circuit being attached thereto can not continue communication, and the business datum that the wiring board breaking down carries also can be lost.
In order to address this problem, conventionally wiring board is carried out to back-up processing.The mode that realizes backup in prior art mainly contains following two kinds of forms:
A kind of mode is to be optimized from network level, adopts network and the communication equipment of redundancy, for example existing dual-homing networking form.Yet, this mode can only realize the redundancy backup of 1:1, and, due to needs two cover communication equipment and optical fiber links, user must additionally pay the huge costs such as equipment, optical fiber wiring, rack, installation machine room, and the power consumption that this dual-homing networking causes and maintenance cost etc. are also very high;
Another kind of mode is the communication equipment that design has N:1 redundancy backup, and this device interior backup and annexation are comparatively complicated, and the logical relation of simplification as shown in Figure 2.Wiring board is divided into interface board and Line Processing Unit according to logic function.Under normal circumstances, a corresponding Line Processing Unit of interface board.It has been generally acknowledged that the inner annexation of interface board is fairly simple, thereby failure rate is low, therefore in this implementation, only wiring board disposable plates is backed up.After a certain Line Processing Unit lost efficacy, need to the transfer of data of the corresponding interface board of this faulty line disposable plates be processed on extension wire disposable plates by extra switch.In this implementation, because needs additionally increase switch, make system complicated, cost increases; And interface board does not possess redundancy backup ability, although interface board failure rate is low, but interface board is also comprised of active devices such as integrated circuits, still can have the possibility of inefficacy, therefore, this system reliability can only rise at most the inherent reliability level of interface board.
Summary of the invention
The present invention proposes a kind of redundancy backup method, system and optical interface wiring board of optical interface wiring board, can realize the N:1 redundancy backup of wiring board, improves the reliability of wiring board.
Technical solution of the present invention is:
The embodiment of the present invention provides a kind of redundancy backup method of optical interface wiring board, and described method comprises:
Utilize the optical interface extension wire plate of connection line plate and described wiring board respectively of the light splitting end of optical splitting/combining apparatus;
Described wiring board is carried out to fault detect;
When described wiring board breaks down, close the optical interface that connects described optical splitting/combining apparatus on described wiring board, open and on described extension wire plate, connect described optical splitting/combining apparatus and the optical interface corresponding with described wiring board, by this optical interface on described extension wire plate, receive the former data-signal that mails to described wiring board, or send the light signal that originally need to send by described wiring board.
An optical interface wiring board, comprising:
The first optical interface module, for connecting an optical interface of the light splitting end of outside optical splitting/combining apparatus, other optical interfaces of the light splitting end of described optical splitting/combining apparatus connect the extension wire plate of described wiring board;
Fault judge module, for judging whether wiring board breaks down;
Redundant control module, for when wiring board breaks down, closes the optical interface that connects described optical splitting/combining apparatus on described wiring board, opens and on described extension wire plate, connects described optical splitting/combining apparatus and the optical interface corresponding with described wiring board.
A redundancy backup system for optical interface wiring board, described system comprises:
Optical splitting/combining apparatus, the optical interface difference connection line plate of the light splitting end of described optical splitting/combining apparatus and the extension wire plate of described wiring board;
Fault judge module, for judging whether wiring board breaks down;
Redundant control module, for when wiring board breaks down, closes the optical interface that connects described optical splitting/combining apparatus on described wiring board, opens and on described extension wire plate, connects described optical splitting/combining apparatus and the optical interface corresponding with described wiring board;
Extension wire plate, for receiving the former data-signal that mails to described wiring board by connecting described optical splitting/combining apparatus and the optical interface corresponding with described wiring board 50, or sends the light signal that originally need to send by described wiring board.
In the embodiment of the present invention, the characteristic of utilizing the light signal of Optical Fiber Transmission to carry out light splitting and to close light, realize between any optical interface wiring board and backuping each other, and wiring board is set connects optical splitting/combining apparatus, optical splitting/combining apparatus has threeway characteristic, except being connected with opposite equip. Yi road, all the other two-way connect respectively working line plate and extension wire plate.When working line plate breaks down, for sending direction, be that this equipment is to the direction of opposite equip., close the data output optical interface of described wiring board, this optical interface stops luminous, open the optical interface corresponding with described wiring board on extension wire plate, the light signal that former cause working line plate is sent changes by spare line plate and sends and be transferred to opposite equip.; Equally, for receive direction, opposite equip. is to the direction of this equipment, and described wiring board, because fault cannot be processed the data message of light signal and carrying, changes by spare line plate and processes.By optical splitting/combining apparatus, two optical interfaces are 1:1 backup, when the optical interface quantity of spare line plate is N times of described wiring board optical interface quantity, just can realize the wiring board backup relation of N:1.
In addition, when redundancy backup ratio need to change, without the electric aspect annexation of docking oralia, modify, it is simple, convenient to realize, and optical splitting/combining apparatus reliability is high, can greatly improve the reliability of wiring board.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the distributed system architecture schematic diagram of communication equipment in prior art;
Fig. 2 is the inside annexation schematic diagram of the communication equipment of a kind of N:1 redundancy backup in prior art;
Fig. 3 is the redundancy backup method steps flow chart schematic diagram of a kind of optical interface wiring board of the embodiment of the present invention;
Fig. 4 is the inoperative redundant system model schematic diagram of the embodiment of the present invention;
Fig. 5 is the redundancy backup system example structure schematic diagram of a kind of optical interface wiring board of the embodiment of the present invention;
Fig. 6 is the system configuration schematic diagram of an extension wire board back-up polylith wiring board of the embodiment of the present invention;
Fig. 7 is the structural representation of a kind of optical interface wiring board of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Conventionally, to the backup of wiring board, it is all the implementation based on electric aspect, the ability of redundancy backup is generally fixed, if for example initial design is the backup relation of 2:1, when needs change the just necessary redesign system of redundancy backup ratio, the circuit connecting relation of relevant interface board, Line Processing Unit, power board etc. all may need to redesign.
For fear of above-mentioned defect, the embodiment of the present invention provides a kind of redundancy backup method of optical interface wiring board, and as shown in Figure 3, described method can comprise the following steps:
Step 301, utilize the optical interface extension wire plate of connection line plate and described wiring board respectively of the light splitting end of optical splitting/combining apparatus;
In this step, the characteristic of utilizing the light signal of Optical Fiber Transmission to carry out light splitting and to close light, optical splitting/combining apparatus is inserted into the optical-fibre channel between opposite equip. and local device optical interface wiring board, by optical splitting/combining apparatus, between opposite equip., wiring board and extension wire plate three, form threeway annexation, wherein, the light end optical interface that closes of optical splitting/combining apparatus can peer end of the connection equipment.
Step 302, described wiring board is carried out to fault detect.
Step 303, when finding that described wiring board breaks down, close the optical interface that connects described optical splitting/combining apparatus on described wiring board, open and on described extension wire plate, connect described optical splitting/combining apparatus and the optical interface corresponding with described wiring board, by this optical interface on described extension wire plate, receive the former data-signal that mails to described wiring board, or send the light signal that originally need to send by described wiring board;
In this step, when wiring board breaks down, by extension wire plate, substitute this wiring board and communicate with the opposite equip. that is connected optical splitting/combining apparatus and closes light end optical interface.
In the embodiment of the present invention, the characteristic of utilizing the light signal of Optical Fiber Transmission to carry out light splitting and to close light, realize between any optical interface wiring board and backuping each other, and wiring board is set connects optical splitting/combining apparatus, optical splitting/combining apparatus has threeway characteristic, except being connected with opposite equip. Yi road, all the other two-way connect respectively working line plate and extension wire plate.When working line plate breaks down, for sending direction, be that this equipment is to the direction of opposite equip., close the data output optical interface of described wiring board, this optical interface stops luminous, open the optical interface corresponding with described wiring board on extension wire plate, the light signal that former cause working line plate is sent changes by spare line plate and sends and be transferred to opposite equip.; Equally, for receive direction, opposite equip. is to the direction of this equipment, and described wiring board, because fault cannot be processed the data message of light signal and carrying, changes by spare line plate and processes.By optical splitting/combining apparatus, two optical interfaces are 1:1 backup, when the optical interface quantity of spare line plate is N times of described wiring board optical interface quantity, just can realize the wiring board backup relation of N:1.
In addition, when redundancy backup ratio need to change, without the electric aspect annexation of docking oralia, modify, it is simple, convenient to realize, and optical splitting/combining apparatus reliability is high, can greatly improve the reliability of wiring board.
Between step 301 and step 302, there is no strict sequential restriction, in the specific implementation, also can first perform step 302 content, then perform step 301 content, to this, the embodiment of the present invention is not specifically limited.
Conventionally, the wiring board optical interface that the optical interface that extension wire plate provides backs up with it is identical, and when utilizing an extension wire board back-up polylith wiring board, the optical interface quantity on extension wire plate is the optical interface quantity sum of its polylith wiring board backing up.For example, the wiring board that need to back up has 4, and each wiring board has 10 1000BASE-FX (kilomega optic fiber port ethernet) interface, and the wiring board that backs up use should provide 4 * 10=40 1000BASE-FX interface.
User can select any wiring board to carry out the backup of any redundancy ratio, for example: if user only wishes a wiring board to carry out 1:1 backup protection, only need an extra extension wire plate identical with protected circuit plate.
It should be noted that, extension wire plate can be identical to the disposal ability of message and the wiring board of its backup, also can be different.If message processing capability is identical, the interface of extension wire plate should have the convergence capabilities of N:1, the wiring board number that the N is here its backup.So-called " convergence " refers to when the interface bandwidth of extension wire plate is greater than disposal ability, can dispatch and selectively carry out packet loss.The advantage of the port selection mode of extension wire plate this " convergence " is while utilizing an extension wire plate to back up polylith wiring board, when polylith wiring board breaks down simultaneously, this extension wire plate also can back up, just when the message flow being switched is greater than extension wire plate processing bandwidth, to there is part message to be dropped, for example: the priority according to message sorts, selection abandons the lower message of priority, to guarantee that the message that priority is higher can normal process.Those skilled in the art, when the port mode to " convergence " arranges, can determine according to actual application scenarios, and to this, the embodiment of the present invention is also not specifically limited.
The disposal ability that another kind of situation is extension wire plate is greater than the disposal ability of its wiring board backing up, for example: 2 times of wiring boards that back up to it of disposal ability of spare line plate, when two wiring boards break down simultaneously, due to the existence of extension wire plate, can not there is the situation of loss of data.In general, the disposal ability of supposing wiring board is x, the disposal ability of extension wire plate is y, the backup capabilities coefficient q=y/x of extension wire plate has determined the height of its backup capabilities, during as q=4, when four wiring boards break down simultaneously, extension wire plate carries out after data protection is switched message dropping not occurring; During as q=0.5, if when the data message flow of a former carrying of wiring board is linear speed, when this wiring board breaks down, nearly half data message can cannot be processed and abandon because of spare line plate.
In the embodiment of the present invention, judge that whether wiring board breaks down is by the state of wiring board is detected to acquisition.In the specific implementation, wiring board can be set and carry self-detection mechanism, can detect oneself state; Or, by the detection module outside wiring board, the state of wiring board is detected, this detection module is for example set on master control borad, by master control borad, the state of wiring board is detected.
For the fault detect of wiring board, existing multiple implementation, for example: for memory, can pass through various data checks, for example: parity check, ECC (Error Checking and Correcting, error checking and correction); Can be fine or not by phase-locked loop lock indication signal judgement clock for clock detection, or carry out count detection; For power supply, detect and can lead to superpotential detection; Can be by temperature sensor detection etc. for environment measuring.
When finding to exist the fault that can not automatically repair, for example, clock crystal oscillator no-output, overtension or too low, mass data packet loss or obstruction, there is gross error etc. in data check mistake or the reflection of chip status register, closes the data output optical interface of described wiring board, open the optical interface corresponding with described wiring board on extension wire plate, optical interface and opposite equip. by described extension wire plate communicate.
When definite wiring board breaks down, in the time of need to processing and forward the former message that mails to described wiring board by extension wire plate, or when the message that described in former cause, wiring board sends need be sent by extension wire plate, the routing information that message is forwarded can change, therefore, need to upgrade forward-path information.Described routing information can have the different forms of expression for different communication equipments, for example, for router, routing information can represent by forwarding-table item, when routing information changes, corresponding forwarding-table item is upgraded according to extension wire plate, make to be originally forwarded to the message of faulty line plate, change to and be forwarded to extension wire plate.
The technical scheme of the embodiment of the present invention has redundancy backup mode very flexibly, extension wire plate can be inserted in any circuit board slot position, user can be as required with an extension wire board back-up polylith wiring board, as backup relations such as 1:1,2:1,3:1, between reliability and economy, obtain best balance.The branch of the optical splitting/combining apparatus that now, the optical interface of extension wire plate is connected with the corresponding wiring board that it backs up is respectively connected.Visible, under this situation, optical splitting/combining apparatus can be selected the form on one minute two-way and two-way unification road, makes in three branch port of optical splitting/combining apparatus, and two branch port except peer end of the connection equipment connect respectively the wiring board that extension wire plate and this extension wire plate back up.
In another embodiment of the present invention, can also utilize extension wire plate described in polylith to back up a wiring board simultaneously, described optical splitting/combining apparatus is the optical splitting/combining apparatus on one minute multichannel and multichannel unification road, a port in a plurality of branches of the optical splitting/combining apparatus on described one minute multichannel and multichannel unification road is connected described wiring board, and in branch, all the other ports connect respectively a plurality of extension wire plates.A wiring board of now a plurality of wiring boards backup, i.e. 1:N backup, the reliability of this kind of backup mode can be higher, but that shortcoming is economy is bad.
In the embodiment of the present invention, realize the redundancy backup relation of a wiring board of polylith extension wire board back-up, as 1:2,1:3.......This backup relation only need to change separation/combination electro-optical device, use one to drive the passive separation/combination electro-optical device of multichannel, described one port driving in multichannel optical splitting/combining apparatus branch output connects described wiring board, and in branch, all the other ports connect respectively each extension wire plate.
In theory, the reliability of a wiring board of polylith wiring board backup is higher, still, cost is also larger, and the more powerful optical module of demand motive ability, generally seldom adopt in actual applications, but this implementation can provide for user the selection form of more kinds of backups.
In addition, it should be noted that, described optical splitting/combining apparatus is passive optical splitting/combining apparatus.Can use light passive network (PON, Passive Optical Networks) conventional planar optical waveguide splitter (PLC in, or fused tapered (Fused Biconical Taper, FBT) optical splitter Planar Lightwave Circuit).Because separation/combination is passive device, can accomplish its useful life equally longly with optical fiber, in outside destroy situation, can not lose efficacy not having.
Wherein, in planar optical waveguide splitter, light signal, from closing the input of terminal port, can separate a plurality of output optical signals through fiber array V-shaped type groove; Otherwise light signal is from a plurality of ports inputs of minute terminal, close road signal closing the output of terminal port.This part content belongs to technology well known to those skilled in the art, therefore, no longer repeats.
Planar optical waveguide splitter has plurality of specifications, drives 2,1 and drives 16,1 and drive 32,2 and drive 16 etc. as 1.No matter be light splitting or close light, a light splitting or the insertion loss that closes light are all 3dB.This is only equivalent to about 6 kilometers of light energies that optical fiber consumes, and the light transmission capability specification of general optical module is from hundreds of rice to kilometers up to a hundred, so the extra consumption of 3dB can make up by the optical module with higher-wattage.
The only difference in processing technology of the difference of another passive optical splitting/combining apparatus---fused tapered optical branching device and planar optical waveguide splitter, other application and parameter are basic identical.
According to reliability theory, the technical scheme of the embodiment of the present invention belongs to the inoperative redundant system (or claiming stand-by system) that two unit (that is: the wiring board of extension wire plate and backup thereof) form, and model as shown in Figure 4.The feature of this model is, during a cell operation, the deposit state of another unit in non operating state, when break down in working cell, by conversion equipment, make the replacement working cell, unit of deposit, be equivalent in the embodiment of the present invention, under normal condition, extension wire plate does not participate in transfer of data, transfer of data is carried out via the wiring board not breaking down, when wiring board breaks down, this wiring board does not participate in transfer of data, and transfer of data turns by the extension wire plate of this wiring board to be carried out.
The following describes the reliability in embodiment of the present invention technical scheme.If the failure rate that the reliability of supposition fault detect and switching is 100%, E1 and E2 unit is all λ mutually, the reliability RS of above-mentioned redundant system (t) is: RS (t)=exp (λ t) * (1+ λ t), wherein t is time variable.The reliability of individual unit is R (t)=exp (λ t), and therefore, after redundancy backup, the reliability of system has promoted (1+ λ t) doubly.For explanation reliability promotes contrast effect, be exemplified below:
Suppose that a unit reliability is a constant, R=exp (λ t)=0.99,, after redundancy backup, the reliability of system is: RS=(1-ln (0.99)) * 0.99=0.99995; When the reliability R=0.999 of a unit, the reliability after redundancy backup is: RS=(1-ln (0.999)) * 0.999=0.9999995.
As can be seen here, the embodiment of the present invention makes the wiring board reliability of communication system promote a plurality of orders of magnitude, can make originally can not to meet the requirement that system that carrier class reliability requires meets and exceeds carrier class reliability completely.
In addition, with respect to All other routes board back-up system, the present invention is only to increase in the cost of elevator system reliability greatly the passive minute photosynthetic road device that widely apply in some markets and price is very cheap.Therefore, it is convenient to realize, and cost is lower.
Correspondingly, the embodiment of the present invention also provides a kind of redundancy backup system of optical interface wiring board, as shown in Figure 5, described system comprises: wiring board 50 to be backed up, extension wire plate 51, fault judge module 52, redundant control module 53 and optical splitting/combining apparatus 54; Wherein
The optical interface difference connection line plate of the light splitting end of described optical splitting/combining apparatus 54 and the extension wire plate of described wiring board;
Described optical splitting/combining apparatus 54 is used to form the branch of light path, and the data message with the carrying of light form is connected on described extension wire plate 51;
Fault judge module 52, for judging whether wiring board 50 breaks down;
Redundant control module 53, for when wiring board 50 breaks down, closes the optical interface that connects described optical splitting/combining apparatus on described wiring board 50, opens and on described extension wire plate 51, connects described optical splitting/combining apparatus and the optical interface corresponding with described wiring board 50;
Extension wire plate 51, for receiving the former data-signal that mails to described wiring board by connecting described optical splitting/combining apparatus and the optical interface corresponding with described wiring board 50, or sends the light signal that originally need to send by described wiring board.
In the embodiment of the present invention, the characteristic of utilizing the light signal of Optical Fiber Transmission to carry out light splitting and to close light, realize between any optical interface wiring board and backuping each other, and wiring board is set connects optical splitting/combining apparatus, optical splitting/combining apparatus has threeway characteristic, except being connected with opposite equip. Yi road, all the other two-way connect respectively working line plate and extension wire plate, when fault judge module is judged wiring board and is broken down, for sending direction, be that this equipment is to the direction of opposite equip., close the data output optical interface of described wiring board, this optical interface stops luminous, open the optical interface corresponding with described wiring board on extension wire plate, the light signal that former cause working line plate is sent changes by spare line plate and sends and be transferred to opposite equip., equally, for receive direction, opposite equip. is to the direction of this equipment, and described wiring board, because fault cannot be processed the data message of light signal and carrying, changes by spare line plate and processes.By optical splitting/combining apparatus, two optical interfaces are 1:1 backup, when the optical interface quantity of spare line plate is N times of described wiring board optical interface quantity, just can realize the wiring board backup relation of N:1.When redundancy backup ratio need to change, without the electric aspect annexation of docking oralia, modify, it is simple, convenient to realize, and optical splitting/combining apparatus reliability is high, can greatly improve the reliability of wiring board.
Conventionally, the wiring board optical interface that the optical interface that extension wire plate provides backs up with it is identical, and when utilizing a wiring board of an extension wire board back-up, the optical interface quantity on extension wire plate is the optical interface quantity sum of its polylith wiring board backing up.
User can select any wiring board to carry out the backup of any redundancy ratio, for example: if user only wishes a wiring board to carry out 1:1 backup protection, only need an extra extension wire plate identical with protected circuit plate.
In the embodiment of the present invention, judge that whether wiring board breaks down is, by fault judge module, the state of wiring board is detected to acquisition.In the specific implementation, wiring board can be set and carry self-detection mechanism, can detect oneself state, that is, fault judge module is arranged in the internal structure of wiring board; Or, fault judge module is arranged on outside wiring board, making this fault judge module is the functional module that is independent of wiring board, by this fault judge module, the state of wiring board is detected, this fault judge module is for example set on master control borad, by master control borad, the state of wiring board is detected.
The realization mechanism of redundant control module and fault judge module is similar, redundant control module can be arranged in the internal structure of wiring board equally; Or, redundant control module is arranged on outside wiring board, making this redundant control module is the functional module that is independent of wiring board.
For the fault detect of wiring board, existing multiple implementation, for example: for memory, can pass through various data checks, for example: parity check, ECC (Error Checking and Correcting, error checking and correction); Can be fine or not by phase-locked loop lock indication signal judgement clock for clock detection, or carry out count detection; For power supply, detect and can lead to superpotential detection; Can be by temperature sensor detection etc. for environment measuring.Therefore,, when realizing the embodiment of the present invention, according to practical application scene, fault judge module can possess any fault detection mechanism.
It should be noted that, extension wire plate can be identical to the disposal ability of message and the wiring board of its backup, also can be different.If message processing capability is identical, the interface of extension wire plate should have the convergence capabilities of N:1, the wiring board number that the N is here its backup.So-called " convergence " refers to when the interface bandwidth of extension wire plate is greater than disposal ability, can dispatch and selectively carry out packet loss.The advantage of the port selection mode of extension wire plate this " convergence " is while utilizing an extension wire plate to back up polylith wiring board, when polylith wiring board breaks down simultaneously, this extension wire plate also can back up, just when the message flow being switched is greater than extension wire plate processing bandwidth, to there is part message to be dropped, for example: the priority according to message sorts, selection abandons the lower message of priority, to guarantee that the message that priority is higher can normal process.Those skilled in the art, when the port mode to " convergence " arranges, can determine according to actual application scenarios, and to this, the embodiment of the present invention is also not specifically limited.
After fault detection module is determined the testing result that wiring board breaks down, need to enable extension wire plate by redundant control module and receive the former data-signal that mails to described wiring board.Meanwhile, revise forward-path information, thereby redundant control module, according to the renewal of forward-path information, is forwarded to extension wire plate by the former data-signal that mails to described wiring board, avoids the loss of data.
Described routing information can have the different forms of expression for different communication equipments, for example, for router, routing information can represent by forwarding-table item, when routing information changes, corresponding forwarding-table item is upgraded according to extension wire plate, make to be originally forwarded to the message of faulty line plate, change to and be forwarded to extension wire plate.
The technical scheme of the embodiment of the present invention has redundancy backup mode very flexibly, extension wire plate can be inserted in any circuit board slot position, user can be as required with an extension wire board back-up polylith wiring board, and as shown in Figure 6, backup relation can be as 1:1,2:1,3:1 etc.A port of branch's output of the optical splitting/combining apparatus that now, the optical interface of extension wire plate is connected with the corresponding wiring board that it backs up respectively connects.Visible, under this situation, optical splitting/combining apparatus can be selected a form of driving two-way, makes two ports of the branch output of optical splitting/combining apparatus connect respectively the wiring board that extension wire plate and this extension wire plate back up.
In another embodiment of the present invention, can also utilize extension wire plate described in polylith to back up a wiring board simultaneously, described optical splitting/combining apparatus is to drive multichannel optical splitting/combining apparatus, described one port driving in multichannel optical splitting/combining apparatus branch output connects described wiring board, and in branch, all the other ports connect respectively each extension wire plate.
In the embodiment of the present invention, realize the redundancy backup relation of a wiring board of polylith extension wire board back-up, as 1:2,1:3.......This backup relation only need to change separation/combination electro-optical device, use one to drive the passive separation/combination electro-optical device of multichannel, described one port driving in multichannel optical splitting/combining apparatus branch output connects described wiring board, and in branch, all the other ports connect respectively each extension wire plate.
It should be noted that, described optical splitting/combining apparatus is passive optical splitting/combining apparatus.Can use light passive network (PON, Passive Optical Networks) conventional planar optical waveguide splitter (PLC in, or fused tapered (Fused Biconical Taper, FBT) optical splitter PlanarLightwave Circuit).Because separation/combination is passive device, can accomplish its useful life equally longly with optical fiber, in outside destroy situation, can not lose efficacy not having.
The embodiment of the present invention makes the wiring board reliability of communication system promote a plurality of orders of magnitude, can make originally can not to meet the requirement that system that carrier class reliability requires meets and exceeds carrier class reliability completely.
In addition, with respect to All other routes board back-up system, the present invention is only to increase in the cost of elevator system reliability greatly the passive minute photosynthetic road device that widely apply in some markets and price is very cheap.Therefore, it is convenient to realize, and cost is lower.
The redundancy backup system of the optical interface wiring board shown in Fig. 5 and Fig. 6, redundant control module and fault judge module are all arranged on outside wiring board, become the functional module that is independent of wiring board.When redundant control module and fault judge module are all arranged in the internal structure of wiring board, the embodiment of the present invention also provides a kind of optical interface wiring board, and as shown in Figure 7, this wiring board 70 comprises:
The first optical interface module 701, for connecting an optical interface of the light splitting end of outside optical splitting/combining apparatus 702, other optical interfaces of the light splitting end of described optical splitting/combining apparatus 702 connect the extension wire plate 705 of described wiring board;
Fault judge module 703, for judging whether wiring board breaks down;
Redundant control module 704, for when wiring board breaks down, closes described the first optical interface 701, controls to open on described extension wire plate 705 to connect described optical splitting/combining apparatus and the optical interface corresponding with described wiring board.
Wherein, described redundant control module, according to the renewal of forward-path information, is forwarded to described extension wire plate by the former data-signal that mails to described wiring board.Described optical splitting/combining apparatus is passive optical splitting/combining apparatus, comprising: planar optical waveguide splitter or fused tapered optical splitter.
Can be referring to the detailed description in embodiment above about the related description of optical interface wiring board, the embodiment of the present invention no longer repeats this.
For system embodiment, because it is substantially corresponding to embodiment of the method, so describe fairly simplely, relevant part is referring to the part explanation of embodiment of the method.System embodiment described above is only schematic, the wherein said module as separating component explanation can or can not be also physically to separate, the parts that show as module can be or can not be also physical modules, can be positioned at a place, or also can be distributed on a plurality of mixed-media network modules mixed-medias.Can select according to the actual needs some or all of module wherein to realize the object of the present embodiment scheme.Those of ordinary skills, in the situation that not paying creative work, are appreciated that and implement.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can be in the situation that do not depart from the spirit or scope of the embodiment of the present invention, realization in other embodiments.Therefore, the embodiment of the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (14)
1. a redundancy backup method for optical interface wiring board, is characterized in that, described method comprises:
Utilize the optical interface of the light splitting end of optical splitting/combining apparatus to connect respectively the wiring board of setting and the extension wire plate of described wiring board;
Described wiring board is carried out to fault detect;
When described wiring board breaks down, close the optical interface that connects described optical splitting/combining apparatus on described wiring board, open and on described extension wire plate, connect described optical splitting/combining apparatus and the optical interface corresponding with described wiring board, by this optical interface on described extension wire plate, receive the former data-signal that mails to described wiring board of opposite equip., or send and originally need to send to by described wiring board the light signal of described opposite equip., the light end optical interface that closes of described optical splitting/combining apparatus connects described opposite equip..
2. the redundancy backup method of optical interface wiring board according to claim 1, it is characterized in that, described method also comprises: utilize extension wire plate described in polylith to back up a wiring board simultaneously, described optical splitting/combining apparatus is one minute multichannel optical splitting/combining apparatus, a port in described one minute multichannel optical splitting/combining apparatus branch output connects described wiring board, and in branch, all the other ports connect respectively described extension wire plate.
3. the redundancy backup method of optical interface wiring board according to claim 1, is characterized in that, according to the renewal of forward-path information, the former data-signal that mails to described wiring board is forwarded to described extension wire plate.
4. according to the redundancy backup method of the optical interface wiring board described in any one in claim 1-3, it is characterized in that, described optical splitting/combining apparatus is passive optical splitting/combining apparatus.
5. the redundancy backup method of optical interface wiring board according to claim 4, is characterized in that, described passive optical splitting/combining apparatus comprises: planar optical waveguide splitter or fused tapered optical splitter.
6. an optical interface wiring board, is characterized in that, comprising:
The first optical interface module, for connecting an optical interface of the light splitting end of outside optical splitting/combining apparatus, other optical interfaces of the light splitting end of described optical splitting/combining apparatus connect the extension wire plate of described wiring board, the light end optical interface peer end of the connection equipment that closes of described optical splitting/combining apparatus;
Fault judge module, for judging whether wiring board breaks down;
Redundant control module, for when wiring board breaks down, closes the optical interface that connects described optical splitting/combining apparatus on described wiring board, opens and on described extension wire plate, connects described optical splitting/combining apparatus and the optical interface corresponding with described wiring board.
7. optical interface wiring board according to claim 6, is characterized in that, described redundant control module, according to the renewal of forward-path information, is forwarded to described extension wire plate by the former data-signal that mails to described wiring board.
8. according to the optical interface wiring board described in claim 6 or 7, it is characterized in that, described optical splitting/combining apparatus is passive optical splitting/combining apparatus.
9. optical interface wiring board according to claim 8, is characterized in that, described passive optical splitting/combining apparatus comprises: planar optical waveguide splitter or fused tapered optical splitter.
10. a redundancy backup system for optical interface wiring board, is characterized in that, described system comprises:
Optical splitting/combining apparatus, the optical interface of the light splitting end of described optical splitting/combining apparatus connects respectively the wiring board of setting and the extension wire plate of described wiring board;
Fault judge module, for judging whether wiring board breaks down;
Redundant control module, for when wiring board breaks down, closes the optical interface that connects described optical splitting/combining apparatus on described wiring board, opens and on described extension wire plate, connects described optical splitting/combining apparatus and the optical interface corresponding with described wiring board;
Extension wire plate, be used for by connecting described optical splitting/combining apparatus and the optical interface reception opposite equip. former data-signal that mail to described wiring board corresponding with described wiring board, or send and originally need to send to by described wiring board the light signal of described opposite equip., the light end optical interface that closes of described optical splitting/combining apparatus connects described opposite equip..
The redundancy backup system of 11. optical interface wiring boards according to claim 10, is characterized in that, described extension wire plate is polylith, for back up a wiring board simultaneously; Described optical splitting/combining apparatus is one minute multichannel optical splitting/combining apparatus, and the port in described one minute multichannel optical splitting/combining apparatus branch output connects described wiring board, and in branch, all the other ports connect respectively described extension wire plate.
The redundancy backup system of 12. optical interface wiring boards according to claim 10, is characterized in that, described redundant control module, according to the renewal of forward-path information, is forwarded to described extension wire plate by the former data-signal that mails to described wiring board.
13. according to the redundancy backup system of the optical interface wiring board described in any one in claim 10-12, it is characterized in that, described optical splitting/combining apparatus is passive optical splitting/combining apparatus.
The redundancy backup system of 14. optical interface wiring boards according to claim 13, is characterized in that, described passive optical splitting/combining apparatus comprises: planar optical waveguide splitter or fused tapered optical splitter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/076791 WO2012031402A1 (en) | 2010-09-10 | 2010-09-10 | Redundant backup method and system for optical interface circuit board and optical interface circuit boards thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102652399A CN102652399A (en) | 2012-08-29 |
| CN102652399B true CN102652399B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080003330.6A Expired - Fee Related CN102652399B (en) | 2010-09-10 | 2010-09-10 | Redundant backup method and system for optical interface circuit board and optical interface circuit boards thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102652399B (en) |
| WO (1) | WO2012031402A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833799B (en) * | 2019-04-15 | 2022-04-05 | 杭州海康威视数字技术股份有限公司 | LED receiving assembly and receiving card switching method |
| CN113709601B (en) * | 2020-05-20 | 2022-10-28 | 华为技术有限公司 | Optical transmission equipment, system and optical transmission method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661936A (en) * | 2004-02-25 | 2005-08-31 | 华为技术有限公司 | Device of implementing backup for communication equipment in multistage and method of rearranging main and standby devices |
| CN1921357A (en) * | 2006-09-21 | 2007-02-28 | 杭州华为三康技术有限公司 | Full optical fibre protecting device and method |
-
2010
- 2010-09-10 CN CN201080003330.6A patent/CN102652399B/en not_active Expired - Fee Related
- 2010-09-10 WO PCT/CN2010/076791 patent/WO2012031402A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1661936A (en) * | 2004-02-25 | 2005-08-31 | 华为技术有限公司 | Device of implementing backup for communication equipment in multistage and method of rearranging main and standby devices |
| CN1921357A (en) * | 2006-09-21 | 2007-02-28 | 杭州华为三康技术有限公司 | Full optical fibre protecting device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012031402A1 (en) | 2012-03-15 |
| CN102652399A (en) | 2012-08-29 |
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