Summary of the invention
The purpose of the invention is to overcome the shortcomings of above-mentioned background technique, one kind is provided and realizes broadcast in optical transfer networkThe device and method of service protection can realize various optical transfer network networking types in the case where not increasing any unitBroadcasting service protection, saves the networking cost of optical transfer network, enhances network robustness, is more flexible networking protection.
To achieve the above objectives, the present invention provides a kind of device that broadcasting service protection is realized in optical transfer network, the dressIt sets including control unit, pretection switch processing unit, and is communicated with control unit, pretection switch processing unit severalA business board, several business boards form the optical transfer network of various different networking types.Wherein:
Described control unit is used for: issuing multicast service configuration and multicast relaying configuration to each business board；To protectionIt switches processing unit and issues multicast relaying configuration；
The pretection switch processing unit is used for: after receiving the multicast relaying configuration that control unit issues, being completed correspondingMulticast relaying configuration；And by carrying out real-time judge to the actual conditions for working and protecting channel service signal, to each businessBoard sends pretection switch, removes the order switched or maintained；
The business board is used for: being received multicast service that control unit issues with postponing, is completed corresponding business configuration；It receivesAfter the multicast relaying configuration issued to control unit, corresponding multicast relaying configuration is completed；It receives and confirms that pretection switch is handledThe pretection switch of unit transmission after removing the order switched or maintained, executes corresponding protection act.
The method that broadcasting service protection is realized in optical transfer network based on above-mentioned apparatus that the present invention also provides a kind of, includingFollowing steps:
S1, control unit issue multicast service configuration to each business board, and each business board is completed corresponding business and matchedIt sets；
S2, control unit issue multicast relaying configuration to each business board, and each business board completes corresponding multicastRelaying configuration；
S3, control unit issue multicast relaying configuration, the completion pair of pretection switch processing unit to pretection switch processing unitThe multicast relaying configuration answered；
S4, pretection switch processing unit by sentencing the actual conditions of work and protection channel service signal in real timeIt is disconnected, pretection switch is sent to each business board, removes the order switched or maintained；
After S5, each business board receive and confirm corresponding order, corresponding protection act is executed.
The beneficial effects of the present invention are:
Compared with prior art, the present invention can not only may be used in the case where not increasing any unit (equipment cost)To realize ring-like or chain networking application, choosing from different directions is received broadcast singal and is protected to business, more can be tangentIn the networking of ring, intersecting ring and mesh network, selects to export all the way from multiple signals received in points of tangency and downstream transmit,It realizes the protection between looped network, saves the networking cost of optical transfer network, enhance network robustness, keep networking protection more cleverActivity.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.
The present invention is a kind of technical solution applied to optical transfer network.Currently, the networking types of optical transfer network are generally ringType or chain networking, more complicated includes then tangent rings, intersecting ring and mesh network networking types, for example, typical two ring is tangentRing networking structure is as shown in Figure 1.And the main object of the present invention be not only can be in the case where not increasing any unitRealize ring-like or chain networking application, choosing is received and broadcast singal and is protected to business from different directions, more can tangent rings,In the networking of intersecting ring and mesh network, selects to export all the way from multiple signals received in points of tangency and downstream transmit, it is realProtection between existing looped network.That is, the present invention can realize various light transmission in the case where not increasing any unitThe broadcasting service of net networking types is protected, and the networking cost of optical transfer network is saved, and enhances network robustness, has more networking protectionFlexibility.
In order to achieve the above-mentioned object of the invention, shown in Figure 2, the embodiment of the present invention provides one kind and realizes in optical transfer networkThe device of broadcasting service protection, which includes control unit, pretection switch processing unit, and is fallen with control unit, protectionSeveral business boards that processing unit is communicated are changed, several described business boards constitute various different networking typesOptical transfer network, including ring-like, chain, tangent rings, intersecting ring or mesh network type optical transfer network.
Wherein, control unit is used for: issuing multicast service configuration and multicast relaying configuration to each business board；To protectionIt switches processing unit and issues multicast relaying configuration.
Pretection switch processing unit is used for: after receiving the multicast relaying configuration that control unit issues, completing corresponding multicastRelaying configuration；And by carrying out real-time judge to the actual conditions for working and protecting channel service signal, to each business boardIt sends pretection switch, remove the order switched or maintained.
Business board is used for: being received multicast service that control unit issues with postponing, is completed corresponding business configuration；Receive controlAfter the multicast relaying configuration that unit processed issues, corresponding multicast relaying configuration is completed；It receives and confirms pretection switch processing unitThe pretection switch of transmission after removing the order switched or maintained, executes corresponding protection act, ensures business stable operation.It can be withUnderstand, as shown in fig. 1, the business board can be board (i.e. branch board, the route board point of branch line separationFrom business board), be also possible to branch line unification board (i.e. branch board, wiring board engaging one business board).It changesSentence is talked about, and the business board includes branch board and route board.
Shown in Figure 3, the embodiment of the present invention also provides a kind of realization broadcast in optical transfer network based on above-mentioned apparatusThe method of service protection, comprising the following steps:
Step S1: control unit issues multicast service configuration to each business board, and each business board completes corresponding industryBusiness configuration, is transferred to step S2.
Specifically, in step S1, the detailed process that each business board completes corresponding business configuration is as follows:
Step S101: business is multicasted to all branches and route possessed by this board business by each route boardOn；
Step S102: if tangent rings, intersecting ring or mesh network, then phase where business is also multicasted to by each route boardOther corresponding rings of node are cut on the corresponding All other routes board of the tangent business of this node.It is understood that correspondingAll other routes board is either one or more.
Taking the example shown in figure 1, two tangent rings are defined as Nan Huan and Beihuan；Wherein: route board 1 is in addition to can be from routeOn board 2 and 4 outside receipts business, business can also be received from route board 3；Route board 2 is in addition to can be from route board 1 and 3Outside upper receipts business, business can also be received from route board 4；Route board 3 is in addition to that can receive business from route board 2 and 4Outside, business can also be received from route board 1；Route board 4, can be in addition to can be other than receipts business on route board 1 and 3Business is received from route board 2.Then on this basis, each business board is completed to correspond to the concrete operations of business configuration in Fig. 1Are as follows:
Route board 1: business is multicasted to branch 1, branch 2, route board 2, route board 3, route board 4；
Route board 2: business is multicasted to branch 1, branch 2, route board 1, route board 3, route board 4；
Route board 3: business is multicasted to branch 3, branch 4, route board 1, route board 3, route board 4；
Route board 4: business is multicasted to branch 3, branch 4, route board 2, route board 3, route board 4；It completesAfter corresponding configuration, it is transferred to step S2.
Step S2: control unit issues multicast relaying configuration to each business board, and each business board is completed correspondingMulticast relaying configuration is transferred to step S3.
Specifically, in step S2, the detailed process that each business board completes corresponding multicast relaying configuration is as follows:
Step S201: the work or protected mode of ring where each route board needs to be respectively defined as according to user, andIt is numbered respectively to oneself；It is understood that each work of each ring, the number of protected mode are different.
Step S202: the channel that the work, protection of each branch board and this ring are established is numbered；It is understood thatIt is that the channel number that the corresponding work of identical ring or protected mode are established is consistent, the corresponding work of different rings or protected modeThe channel number established is inconsistent.
Still taking the example shown in figure 1, each business board completes the concrete operations of corresponding multicast relaying configuration in Fig. 1Are as follows:
Route board 1: it is defined as Beihuan work, it is 1 that Line cards 1, which are numbered after receiving to oneself,；
Route board 2: it is defined as Beihuan protection, it is 2 that Line cards 2, which are numbered after receiving to oneself,；
Route board 3: it is defined as Nan Huan work, it is 3 that Line cards 3, which are numbered after receiving to oneself,；
Route board 4: it is defined as southern ring protection, it is 4 that Line cards 4, which are numbered after receiving to oneself,；
Branch board 1: the channel being connected with Beihuan work is defined as No. 1 channel, and the channel being connected with Beihuan protection definesFor No. 2 channels；
Branch board 2: the channel being connected with Beihuan work is defined as No. 1 channel, and the channel being connected with Beihuan protection definesFor No. 2 channels；
Branch board 3: the channel being connected with the work of southern ring is defined as No. 3 channels, the channel definition being connected with southern ring protectionFor No. 4 channels；
Branch board 4: the channel being connected with the work of southern ring is defined as No. 3 channels, the channel definition being connected with southern ring protectionFor No. 4 channels；After completing corresponding configuration, it is transferred to step S3.
Step S3: control unit issues multicast relaying configuration to pretection switch processing unit, and pretection switch processing unit is completeAt corresponding multicast relaying configuration, it is transferred to step S4.
Specifically, step S3 includes following below scheme: control unit numbers the work of each ring, protected mode, andAll branch board number configuration distributings being related to give pretection switch processing unit, and pretection switch processing unit is completed corresponding moreBroadcast relaying configuration.For example, the work of each ring, protected mode number, and all branch boards number being related to are configured that northRing works (1), and Beihuan protects (2), and Nan Huan works (3), southern ring protection (4), tributary card 1, tributary card 2, tributary card 3, tributary card4；What then pretection switch processing unit received that control unit sends is above-mentioned with postponing, and will complete above-mentioned corresponding multicast protection and matchIt sets, after completing corresponding configuration, is transferred to step S4.
Step S4: pretection switch processing unit passes through real-time to working and protecting the actual conditions of channel service signal to carry outJudgement sends pretection switch to each business board, removes and the order such as switch or maintain, is transferred to step S4.
Specifically, step S4 includes following below scheme:
Step S401: branch board, ring where pretection switch processing unit monitors branch board are worked and is protectedAlarm (described to alert alarm and the Signal Degrade for referring to trigger protection protection criteria), if all do not alerted, to the ring industryIt is engaged in corresponding all branch boards while sending removing and switching order, switch the business on the ring service aisle；If the ringWork has alarm, then sends pretection switch order simultaneously to the corresponding all branch boards of the ring business, switch the business to thisOn ring protection channel；If the ring protection has alarm, if business sends maintenance order, remains unchanged, if industry in working conditionBusiness then sends pretection switch order, is switched to working condition in guard mode；If ring work and protection have alarm,It sends and maintains order, business maintains last state.
Still taking the example shown in figure 1, the order transmission of branch board can be operated as follows:
The choosing of branch board 1/2 is received: pretection switch processing unit detects the alarm of Beihuan work and Beihuan protection, if all do not hadThere is alarm, then sending removing switches order simultaneously to branch board 1 and 2, switches the business in Beihuan work, corresponding numberFor No. 1 channel；If Beihuan work has alarm, pretection switch order is sent simultaneously to branch board 1 and 2, business is switchedOnto Beihuan protection, corresponding number is No. 2 channels；If Beihuan ring protection has alarm, if business is sent in working conditionOrder is maintained, is remained unchanged, if business sends pretection switch order, be switched to working condition in guard mode；If BeihuanWork and Beihuan protection have alarm, then send maintenance order, and business maintains last state.
The choosing of branch board 3/4 is received: pretection switch processing unit detects the alarm of southern ring work and southern ring protection, if all do not hadThere is alarm, then sending removing switches order simultaneously to branch board 3 and 4, switches the business in Nan Huan work, corresponding numberFor No. 3 channels；If southern ring work has alarm, pretection switch order is sent simultaneously to branch board 3 and 4, business is switchedOnto southern ring protection, corresponding number is No. 4 channels；If southern ring protection has alarm, if business sends dimension in working conditionOrder is held, is remained unchanged, if business sends pretection switch order, be switched to working condition in guard mode；If Nan HuangongMake and southern ring protection has alarm, then sends maintenance order, business maintains last state.
Step S402: for route board, pretection switch processing unit monitoring points of tangency corresponds to the All other routes plate of businessWhether card has alarm；
If there is alarm, maintenance order is sent, receipts business is selected to keep last state；
If all do not alerted, pretection switch order is sent, the correspondence industry of All other routes board on this ring is received in preferential choosingBusiness；It is understood that under normal conditions, it is specifically chosen which All other routes board on this ring receives business, it can be by user voluntarilySetting selection；If user does not select, can go out be somebody's turn to do after which All other routes board receipts business by pretection switch unit judges,Pretection switch order is sent to the route board, selects the route board number of receipts in the pretection switch order comprising needs；
If the All other routes board business of this ring has alarm, pretection switch order is sent, choosing, which is received, comes from other rings pairAnswer the business of the route board of business no alarm；It is understood that under normal conditions, which no alarm of other rings be specifically chosenRoute board receive business, can be set by the user himself selection；If user does not select, can be gone out by pretection switch unit judgesAfter the route board receipts business from which no alarm, pretection switch order, the pretection switch order are sent to the route boardIn comprising need select receive route board number；
If the All other routes board business of this ring does not alert, and other rings has alarm, then sends maintenance order, according toSo keep receiving the business of the All other routes board under this ring；It can also be appreciated which is specifically chosen under this ring otherRoute board receives business, can be set by the user himself selection；If user does not select, can be gone out by pretection switch unit judges shouldAfter which All other routes board receipts business, pretection switch order is sent to the route board, includes in the pretection switch orderNeed to select the route board of receipts to number.
Still taking the example shown in figure 1, the order transmission of route board can be operated as follows:
The choosing of route board 1 is received: if route board 2 does not alert, being selected and is received from route board 2, else if wiring boardCard 4 does not alert, then selects and receive from route board 4, else if route board 3 does not alert, then selects and receives from route board 3, withWhen upper condition is all unsatisfactory for, then last state is kept.Pretection switch unit judges, which went out, which route board to receive business fromAfterwards, pretection switch order is sent to route board 1, selects the route board number of receipts in the pretection switch order comprising needs；
The choosing of route board 2 is received: if route board 1 does not alert, being selected and is received from route board 1, else if wiring boardCard 3 does not alert, then selects and receive from route board 3, else if route board 4 does not alert, then selects and receives from route board 4, withWhen upper condition is all unsatisfactory for, then last state is kept.Pretection switch unit judges, which went out, which route board to receive business fromAfterwards, pretection switch order is sent to route board 2, selects the route board number of receipts in the pretection switch order comprising needs；
The choosing of route board 3 is received: if route board 4 does not alert, being selected and is received from route board 4, else if wiring boardCard 2 does not alert, then selects and receive from route board 2, else if route board 1 does not alert, then selects and receives from route board 1, withWhen upper condition is all unsatisfactory for, then last state is kept.Pretection switch unit judges, which went out, which route board to receive business fromAfterwards, pretection switch order is sent to route board 3, selects the route board number of receipts in the pretection switch order comprising needs；
The choosing of route board 4 is received: if route board 3 does not alert, being selected and is received from route board 3, else if wiring boardCard 1 does not alert, then selects and receive from route board 1, else if route board 2 does not alert, then selects and receives from route board 2, withWhen upper condition is all unsatisfactory for, then last state is kept.Pretection switch unit judges, which went out, which route board to receive business fromAfterwards, pretection switch order is sent to route board 4, selects the route board number of receipts in the pretection switch order comprising needs.
Step S5: after each business board receives and confirms corresponding order, corresponding protection act is executed, ensures that business is stablizedOperation.
It is understood that step S4 is that pretection switch processing unit passes through to the reality for working and protecting channel service signalBorder situation carries out real-time judge, sends pretection switch to each business board, removes and the operations of orders such as switch or maintain.I.e. onlyAfter completing step S1~S3, once there is the condition alerted or the trigger protections such as Signal Degrade are switched in the existing business of correspondence of netting, justStep S4 and subsequent step S5 can be triggered in real time.When service signal is stable or the configuration of step S1~S3 is cancelled, stepS4, S5 will not just be triggered in real time.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing fromUnder the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the inventionWithin the scope of.
The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.