CN101505234B - System and method for inter-board communication - Google Patents
System and method for inter-board communication Download PDFInfo
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- CN101505234B CN101505234B CN200910105781XA CN200910105781A CN101505234B CN 101505234 B CN101505234 B CN 101505234B CN 200910105781X A CN200910105781X A CN 200910105781XA CN 200910105781 A CN200910105781 A CN 200910105781A CN 101505234 B CN101505234 B CN 101505234B
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Abstract
The invention discloses a system and a method for inter-plate communication. The method for the inter-plate communication comprises the following steps: registering inter-plate communication channels between single plates, establishing routing lists of the inter-plate communication respectively, setting the priority of the channels in the routing list, and selecting the channel with the highest priority as a default channel to perform communication between the single plates; and after the default channel in the routing list is replaced, using the replaced default channel between the single plates to perform the inter-plate communication. The system and the method not only achieve the aim of selecting the channels dynamically for the inter-plate communication between the single plates, but also select the channel with the shortest route-consuming time by setting the priority as the default channel to perform the inter-plate communication, thus the efficiency of the inter-plate communication is improved.
Description
Technical field
The present invention relates to network communication field, relate in particular to a kind of in network communication field the system and method for the communication between plates of Dynamic Selection communication port.
Background technology
In the communications field, in rack-mount unit, generally can be designed with a master control borad or be reserved with one and control, keep watch on the regular traffic work of all other business boards, other slave control board in order to the overall situation to several slave control board.For convenience, business board, the slave control board of back literary composition except master control borad is referred to as controlled plate.When need not to specialize, master control borad, perhaps controlled plate all abbreviates veneer as.
Master control borad is realized through communication between plates with the communication between the controlled plate.At present, the industry communication between plates generally is fixing certain hardware interface of selecting, and through standard protocol stack, perhaps accomplishes the communication between the veneer merchandiser plate through self-defining communication protocol on this basis.
See also Fig. 1, it is the communication between plates sketch map between the prior art veneer.
When master control borad or controlled plate work is undesired even crash when causing communication disruption, system designer hopes to detect problematic veneer rapidly through communication between plates, thereby the normal function of fast this veneer of quick-recovery makes that the influence to the user drops to minimum level.
Yet, because the passage of hardware interface is generally all more fixing, can not Dynamic Selection; If also promptly passage hurries or channel failure, normal communication between plates will be affected transceive data that can not be in good time; The opposing party's in may causing thus communicating by letter erroneous judgement; Thereby take recovery means some predefineds, maybe be more consuming time, as restart veneer, thereby cause the service disconnection that veneer is unnecessary.
Summary of the invention
For solving the problem that communication between plates between the veneer can not the Dynamic Selection passage, be necessary to provide the system of the communication between plates of the dynamic selector channel of a kind of ability.
In addition, also be necessary to provide a kind of method of above-mentioned communication between plates.
The system of communication between plates of the present invention comprises master control borad and controlled plate; Said master control borad comprises at least one master control borad passage; Said controlled plate comprises at least one controlled plate passage, and said master control borad and controlled plate are set up routing table respectively, and master control borad is in the routing table of self; Expend time in path used during according to channel registration, the set path minimum passage that expends time in is a default channel; Controlled plate is in the routing table of self, according to the priority weight setting default channel of passage; Said master control borad and controlled plate connect through default channel separately, carry out communication between plates, and after default channel was replaced, said master control borad and controlled plate used the default channel after the replacement to carry out communication between plates.
In said system; Said routing table comprises the channel number and the passage corresponding priorities of passage; Said master control borad passage corresponding priorities expends time in and is provided with in used path during according to said master control borad channel registration, and expends time in said path when identical, relatively the channel number of master control borad passage size; Confirm master control borad passage corresponding priorities, the priority of the default channel of said master control borad is the highest.
In said system, said master control borad passage and controlled plate passage are made up of hardware corridor and software passage.
The method of communication between plates of the present invention may further comprise the steps:
The passage of the communication between plates between registration master control borad and the controlled plate; And set up the routing table of the communication between plates of self respectively; Master control borad is in the routing table of self, and during according to the master control borad channel registration expend time in used path, and the master control borad passage that set path expends time in minimum is a default channel; Controlled plate is in the routing table of self, according to the priority weight setting default channel of controlled plate passage; Said master control borad and controlled plate connect through default channel separately, carry out communicating by letter between said master control borad and the controlled plate;
After default channel in the said routing table is replaced, use replacement default channel afterwards to carry out communication between plates between said master control borad and the controlled plate.
In said method; The passage of the communication between plates between said registration master control borad and the controlled plate comprises: said master control borad is the route exploration message between controlled plate transmission board; And judge whether controlled plate returns route reply message between corresponding plate, if the passage of said communication between plates is in proper working order; Otherwise the passage work of said communication between plates is improper.
In said method; Said master control borad sends route exploration message between said plate to controlled plate; To receiving the shortest time that controlled plate returns corresponding reply message, when being defined as said master control borad channel registration expend time in used path, and the priority of said master control borad passage is according to the setting that expends time in of said path; Said default channel is in expending time in the path of all passages in the master control borad, and the shortest passage expends time in the path.
In said method; The passage of the communication between plates between said registration master control borad and the controlled plate comprises: the passage of the communication between plates between registration master control borad and the controlled plate; And; Said master control borad sends route exploration message between said plate at least one controlled plate, and said controlled plate sends route reply message between said plate to said master control borad.
In said method; The priority that passage is set in said routing table comprises: according to the path of all passages of the master control borad size order that expends time in; The priority of master control borad passage is set, and equal if expend time in the path, relatively the channel number of passage is big or small again; Channel number is more little, and the priority of passage is high more.
In said method; Default channel in the said master control borad routing table is replaced finger: said master control borad is through default channel route exploration message between controlled plate transmission board; Do not receive that in the preset time controlled plate returns route reply message between corresponding plate, the default channel in the then said master control borad routing table is replaced.
Compared with prior art; The system and method for communication between plates of the present invention is provided with the priority of passage through setting up the routing table of communication between plates between the veneer respectively in said routing table, and to choose the highest passage of priority be default channel; Carry out the communication between the said veneer; After default channel in said routing table is replaced, use replacement default channel afterwards to carry out communication between plates between the said veneer, not only realized the purpose of the communication between plates Dynamic Selection passage between the veneer; Also select the path the shortest passage that expends time in to carry out communication between plates, thereby improved the efficient of communication between plates as default channel through priority is set.
After the detailed description that combines the advantages embodiment of the present invention, it is clearer that characteristics of the present invention and advantage will become.
Description of drawings
Fig. 1 is the communication between plates sketch map between the prior art veneer;
Fig. 2 is the system module sketch map of communication between plates of the present invention;
Fig. 3 is the message format that the system of communication between plates of the present invention uses;
Fig. 4 is the method flow sketch map of communication between plates of the present invention.
Embodiment
Describe below in conjunction with the system and method for accompanying drawing communication between plates of the present invention.Hereinafter, hardware corridor is meant the hardware resource of transceive data, and the software passage is meant the software resource that transceive data is carried out preliminary treatment.In addition, describe conveniently for the back, general designation has realized that the software of communication means according to the invention is the communication between plates module.
See also Fig. 2, it is the system module sketch map of communication between plates of the present invention.
Inter-board communication system comprises: master control borad A, controlled plate B and controlled plate C.Master control borad A, controlled plate B and controlled plate C interconnect.Master control borad A comprises software passage D1, D2, D3 and hardware corridor E1, E2.Controlled plate B comprises software passage F1, F2 and hardware corridor H1, H2.Controlled plate C comprises software passage I1, I2 and hardware corridor J1, J2.The software passage number that can carry on each hardware corridor is not limit, so hardware corridor has multiple with the software combination of channels on the veneer.Each software passage of each veneer is referred to as passage with the combination of each hardware corridor.Wherein, numeral 1,2,3 is numbering.The software passage D1 of master control borad A adopts Internet protocol, and (D2 and D3 adopt the custom protocol stack for Internet Protocol, IP) protocol stack, and hardware corridor E1 is a network interface, and E2 is other ports.The software passage F1 of controlled plate B adopts IP stack, and F2 adopts the custom protocol stack, and hardware corridor H1 is a network interface, and H2 is other ports.The software passage I1 of controlled plate C adopts IP stack, and I2 adopts the custom protocol stack, and hardware corridor J1 and J2 are network interface.Here, suppose master control borad A, controlled plate B, the hardware corridor of controlled plate C have carried separately all software passages on the veneer.
See also Fig. 3, it is the message format of system's use of communication between plates of the present invention.
The data of communication between plates are divided into two kinds: a kind of be keep link, keep route message between the plate of routing iinformation (Inter-Board Route Packet, IBRP); Another kind be transmit data message between the plate of normal data (Inter-Board Data Packet, IBDP)
Wherein, IBRP divides two kinds: type of message is that route exploration message (IBRDP) and type of message are route reply message (IBRRP) between the plate of 0x5 between the plate of 0x4.IBRRP is the response to IBRDP.First veneer sign is the source veneer among the IBRP, and last veneer sign is the purpose veneer.The message-ending character of IBRDP and IBRRP is masked as EOT (0x4).
If there is not data message to send between the veneer merchandiser plate, when promptly not having IBDP to send yet, then can timed sending IBRP message to keep link; When having IBDP to send, IBRP is attached to transmission in the IBDP message.
The type of message of IBDP is 0x35.If IBDP has comprised IBRP, then the sign that whether comprises the route message of IBDP is put 1, and the back is followed by route heading between plate, and the message-ending character of route heading is 0x3 between plate.
See also Fig. 4, it is the method flow sketch map of communication between plates of the present invention.
The method of communication between plates of the present invention may further comprise the steps:
The passage of step S1, the communication between plates of registration between the veneer, and set up the routing table of communication between plates respectively is provided with the priority of passage in said routing table, and to choose the highest passage of priority be default channel, carries out the communication between the said veneer;
In master control borad one side, master control borad sends IBRDP to controlled plate, and controlled plate is responded the IBRRP message to master control borad, and master control borad upgrades routing table according to the IBRRP message that receives.
Controlled buttress is provided with the priority weights of an acquiescence according to the attribute of hardware corridor to hardware corridor, and same, the software passage also has the priority weights of an acquiescence, so the default priority weights of passage are that hardware corridor is followed software passage priority weights sum.When the hardware corridor of controlled plate is received the IBRDP of master control borad; If the purpose veneer sign is this veneer; Then on all software passages that this hardware corridor carries, broadcast this message; The purpose software channel number of IBRDP simultaneously, purpose hardware corridor number are updated to corresponding software channel number, hardware corridor number; If the purpose veneer is not this plate, select to give this message on the highest passage of priority weights.IBRDP is ultimately delivered to the communication between plates module through the software passage.If the IBRDP message is to send to this veneer, then upgrade routing table according to the IBRDP that receives earlier, in routing table, select the IBRRP of passage loopback that priority is the highest in a second with interior then; If not sending to this plate, single board information in the middle of in message IBRDP, adding selects the passage that priority is the highest in the routing table to transmit this message then.
The update strategy of controlled plate routing table: the priority weights that adopt acquiescence in the time of system start-up.In one second, to receiving the passage of IBRDP message, the priority weights subtract one, up to reaching priority weights maximum 0; To not receiving the passage of IBRDP message, the priority weights add one, up to reaching priority weights minimum value 255.
Controlled plate is not because send the IBRDP message, and path that therefore can't compute channel is expended, and expends so the judgement of priority-level no longer is the path, but directly uses the priority weights of passage.
Communication with between master control borad A and the controlled plate B is explained:
Through software passage D1 and the hardware corridor E1 of master control borad A, send IBRDP to controlled plate B.In IBRDP, the source veneer sign is master control borad A, and source single plate hardware channel number is E1, and source board software channel number is D1, and the purpose veneer sign is controlled plate B, and purpose single plate hardware channel number and software channel number are unknown.
Through software passage D1 and the hardware corridor E1 of master control borad A, send IBRDP to controlled plate B, possibly directly send to controlled plate B, also possibly send to controlled plate C.
Controlled plate B resolves the message that receives, if the type of message is 0x4, is IBRDP, and the IBRDP that sends over for master control borad A, and whether the purpose veneer sign that reexamines IBRDP is controlled plate B.
If the purpose veneer sign is controlled plate B, the type of then revising this message is IBRRP, number changes the source veneer into controlled plate B simultaneously, and the purpose veneer number changes master control borad A into.If send IBRRP through the software passage H1 and the hardware corridor F1 of controlled board B, be F1 correspondingly then with source single plate hardware channel number, source board software channel number is H1, re-sends to master control borad A.Similarly,, then correspondingly change source single plate hardware channel number and source board software channel number, re-send to master control borad A if send IBRRP through other software passage and the hardware corridor combination of controlled board B.
If the purpose veneer sign is not controlled plate B, but all veneer numbers of process are no more than 3 in the middle of the IBRDP, and then in IBRDP, adding controlled plate B is the transfer veneer, and enclose employed hardware corridor number, software channel number, transmit this message then; If all veneer numbers of middle process surpass 3, then abandon this message.
Master control borad A resolves the message receive, if the type of message is 0x5, is IBRRP, and whether reexamine message purpose veneer number is master control borad A.
If the purpose veneer number is master control borad A; Explain that then master control borad A hardware corridor E1, software passage D1 can lead to; Also be that said passage is in proper working order; And relatively to send IBRDP from hardware corridor E1, the software passage D1 of master control borad A number be the shortest time of all IBRRP of master control borad A to the purpose veneer that receives, and when being defined as the channel registration of said hardware corridor E1, software passage D1 combination expend time in used path, inserts the path of routing table again and expend option.
If the purpose veneer number is not master control borad A, but all veneer numbers of middle process are no more than 3, and then in message, adding own veneer number is the transfer veneer, and encloses hardware corridor, software passage, transmits this data then; If all veneer numbers of middle process surpass 3, then abandon this message.
Set up the routing table of the communication between plates of master control borad A and controlled plate B.As shown in the table:
Table one
In above-mentioned table, channel number is confirmed with the numbering of software passage according to the numbering of hardware corridor jointly.Channel number in the hardware corridor number more little then routing table is more little, and hardware corridor number is the same, comparison software channel number more then, and the software channel number is more little, and then the channel number in the routing table is more little.
In addition, if the passage of certain hardware corridor, software combination of channels is sending one second of IBRDP message with the interior message that do not receive, need to continue to send; The continuous IBRDP message that sends for three times does not all have to respond; Think that then this passage is obstructed, like the passage in the table one 3, and corresponding path is expended and is-1; Priority is-1, representes unavailable.
In table one, priority is that 0 route table items is the highest default channel of priority, and promptly passage 1.The path is expended under the same situation, and the more little priority of channel number is high more.Master control borad A communicates through default channel and other veneer.
In like manner, set up the routing table of the communication between plates of master control borad A and controlled plate C.As shown in the table:
Table two
Master control borad A can send IBRDP to controlled plate B and controlled plate C respectively; And receive the IBRRP that sends from controlled plate B and controlled plate C, thereby set up the routing table of communication between plates of routing table and master control borad A and controlled plate C of the communication between plates of master control borad A and controlled plate B respectively.
Be that controlled plate B upgrades the process of its routing table differently.Controlled buttress is at first set up a default router table according to the default priority weights of passage.Suppose that hardware corridor H1 is the gigabit network interface, the priority weights of giving acquiescence are 0; Hardware corridor H2 is a 100-M network Ethernet, and the priority weights of giving acquiescence are 1; Software passage F1 is the custom protocol stack, and the priority weights of giving acquiescence are 0, and F2 is an IP stack, and the priority weights of giving acquiescence are 1.It all is 0 value that the path of all passages is expended, and the default router table of therefore setting up is shown in table three:
Table three
When master control borad A sent the IBRDP message for controlled plate B, the hardware corridor H1 of controlled plate B had received three messages, and the channel number of message is respectively E1 and D1; And E1 and D2; E1 and D3 therefore enclose purpose hardware corridor H1 earlier, and the protocol stack F1, the F2 that carry at H1 broadcast respectively to the IBRDP message that each receives; The IBRDP of broadcasting has enclosed F1 respectively, the software channel number of F2.The communication between plates module of controlled plate B is from software passage F1, and F2 has received three IBRDP messages respectively, therefore upgrades routing table according to the IBRDP that receives.H2 has received three IBRDP messages, and the channel number of message is respectively E2 and D1, and E2 and D2; E2 and D3; Enclose the protocol stack F1, the F2 that carry at H1 after the purpose hardware corridor H1 and broadcast respectively, the IBRDP of broadcasting encloses F1 respectively, the software channel number of F2 simultaneously.The communication between plates module of controlled plate B is from software passage F1, and F2 has received the IBRDP message respectively, upgrades routing table according to the IBRDP that receives.Routing table after upgrading is as shown in the table:
Table four
Upgraded after the routing table, list item is forward more in the routing table, and priority is high more, and when the priority weights equated, the more little priority of channel number was high more.A second with interior be E1 to source channels, the IBRDP message of D1 is chosen in passage 1 loopback IBRRP message, in like manner source channels is the IBRDP of E1, D2, and source channels is that the IBRDP of E1, D3 is chosen in passage 1 loopback message IBRRP; For source channels is E2, D1, and the message of E2, D2 and E2, D3 is chosen in passage 3 loopback message IBRRP.The routing table of controlled like this plate B has just formally been set up, and does not just adopt default channel with the IBDP of IBRRP information as long as routing table is set up transmission afterwards.
Controlled plate receives that master control borad sends when having carried the IBDP message of IBRDP information; On hardware corridor, do not broadcast this IBDP message; Send IBDP message but be carried in the selection routing table on the software passage that priority is the highest on this hardware corridor, and upgrade routing table.
Suppose that controlled plate B has received an IBDP message at hardware corridor H2, and carried IBRDP information that according to routing table, the IBDP message is finally through delivering to the communication between plates module on the software passage F1, and will upgrade routing table such as table five, the IBRRP of loopback simultaneously message.If there is IBDP to send, and the passage of selecting is passage 3, then IBRRP is carried at loopback in the IBDP, otherwise loopback IBRRP message separately.
Table five
Carry out data transmit-receive through default channel separately between master control borad A and the controlled plate B, promptly carry out communication between plates through the software passage D1 of master control borad A and software passage F1 and the hardware corridor H1 of hardware corridor E1 and controlled plate B.
In like manner, set up the routing table of the communication between plates of controlled plate C.As shown in the table:
Table six
Carry out data transmit-receive through default channel separately between master control borad A and the controlled plate C, promptly carry out communication between plates through the software passage D1 of master control borad A and software passage I1 and the hardware corridor J1 of hardware corridor E2 and controlled plate C.
Above-mentioned all routing tables all need dynamically be kept after setting up.
Be example with table one below:
Each second, master control borad A can be in routing table in two passages that priority is the highest, promptly in default channel and passage to be selected, sent IBRDP and kept communication between plates.There is IBDP to send if default channel is current, then the IBRDP content is included among the IBDP and transmits.That is; When sending IBDP,, can IBRDP be placed on transmission among the IBDP if there is IBRDP to need to send; What send the IBDP selection is the highest passage of priority; Therefore need detect at first whether the passage that needs to send IBRDP information is the highest passage of current priority, can not in IBDP, carry, need to send separately if not this IBRDP then.
Controlled plate B receives IBRDP, perhaps in the IBDP that receives, includes IBRDP, sends IBRRP to master control borad A.If the current IBDP of having of controlled plate B needs to transmit, just IBRRP is included among the IBDP and transmits, otherwise, need to transmit separately IBRRP, to help keeping of routing table.
If within a predefined second; Master control borad A receives IBRRP; Perhaps in the IBDP that receives, include IBRRP, two default channel that priority is the highest of expression master control borad A and passage to be selected and controlled plate B communication between plates are normal, and whether reexamine has the path to expend the passage for-1 in the routing table; If have, the maximum that is set to had inside the current routing table is expended in this path increase progressively 1.In table one, passage 3 corresponding paths are expended and are-1.The path is expended again and be configured to the maximum that current routing table the inside had and add 1, its corresponding priorities correspondingly is made as the lowest class, and promptly 5.As shown in the table:
Table seven
If within a second; In default channel and the passage to be selected one; Perhaps two all do not receive IBRRP, in expression two default channel that priority is the highest and the passage to be selected one, perhaps two improper; Just pairing path in this routing table is expended and be changed to-1, and expend the priority that determines passage again according to the path in the routing table.Select two passages that priority is the highest to continue to send IBRDP afterwards, repeat said process.
If all passages all can not normally receive IBRRP, think that then this veneer breaks off with the link of purpose veneer, whenever all attempt carrying out again the registration of passage then at a distance from 10 seconds.
In addition; If the new tunnel registration is arranged, as has added new hardware, perhaps increased new protocol stack; Need to add new route table items toward the routing table the inside; Combination of channels shown in each list item all need be sent the IBRDP message, receives that IBRRP upgrades routing table afterwards, and IBDP sends and will send according to new default channel next time.
If there is passage to need deletion, also should delete corresponding list item in the routing table simultaneously.After the respective table entry deletion, the channel number in the routing table is renumberd the priority of upgrading simultaneously that comprises route table items.If default channel needs deletion, passage then to be selected is set to default channel; Default channel, passage to be selected has been deleted simultaneously, then selectes default channel with passage to be selected according to the priority that renumbers.
After default channel in step S2, the said routing table is replaced, use replacement default channel afterwards to carry out communication between plates between the said veneer.
If passage is busy or channel failure, after routing table recomputates, according to calculating, if current default channel will then be carried out passage and switch by new default channel replacement.Stop using old default channel to use new default channel instead immediately and send data; Finish if the receiving terminal of passage has data not receive fully, keep old default channel certain hour, default situations is 100 milliseconds, forces after exceeding schedule time to switch, and all data all receive data through the receiving terminal of new default channel.
Compared with prior art; The system and method for communication between plates of the present invention is provided with the priority of passage through setting up the routing table of communication between plates between the veneer respectively in said routing table, and to choose the highest passage of priority be default channel; Carry out the communication between the said veneer; After default channel in said routing table is replaced, use replacement default channel afterwards to carry out communication between plates between the said veneer, not only realized the purpose of the communication between plates Dynamic Selection passage between the veneer; Also select the path the shortest passage that expends time in to carry out communication between plates, thereby improved the efficient of communication between plates as default channel through priority is set.
More than be merely preferred case study on implementation of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the system of a communication between plates, it comprises master control borad and controlled plate, said master control borad comprises at least one master control borad passage; Said controlled plate comprises at least one controlled plate passage; It is characterized in that said master control borad and controlled plate are set up routing table respectively, master control borad is in the routing table of self; Expend time in path used during according to channel registration, the set path minimum passage that expends time in is a default channel; Controlled plate is in the routing table of self, according to the priority weight setting default channel of passage; Said master control borad and controlled plate connect through default channel separately, carry out communication between plates, and after default channel was replaced, said master control borad and controlled plate used the default channel after the replacement to carry out communication between plates.
2. the system of communication between plates according to claim 1; It is characterized in that said routing table comprises the channel number and the passage corresponding priorities of passage, said master control borad passage corresponding priorities expends time in and is provided with in used path during according to said master control borad channel registration; And expend time in said path when identical; Relatively the channel number of master control borad passage size is confirmed master control borad passage corresponding priorities, and the priority of the default channel of said master control borad is the highest.
3. the system of communication between plates according to claim 1 is characterized in that, said master control borad passage and controlled plate passage are made up of hardware corridor and software passage.
4. the method for a communication between plates is characterized in that, may further comprise the steps:
The passage of the communication between plates between registration master control borad and the controlled plate; And set up the routing table of the communication between plates of self respectively; Master control borad is in the routing table of self, and during according to the master control borad channel registration expend time in used path, and the master control borad passage that set path expends time in minimum is a default channel; Controlled plate is in the routing table of self, according to the priority weight setting default channel of controlled plate passage; Said master control borad and controlled plate connect through default channel separately, carry out communicating by letter between said master control borad and the controlled plate;
After default channel in the said routing table is replaced, use replacement default channel afterwards to carry out communication between plates between said master control borad and the controlled plate.
5. the method for communication between plates according to claim 4; It is characterized in that the passage of the communication between plates between said registration master control borad and the controlled plate comprises: said master control borad is the route exploration message between controlled plate transmission board, and judges whether controlled plate returns route reply message between corresponding plate; If; The passage of said communication between plates is in proper working order, otherwise the passage work of said communication between plates is improper.
6. the method for communication between plates according to claim 5; It is characterized in that; All send route exploration message between said plate from said master control borad to controlled plate; Shortest time in the time of the reply message that receives the correspondence that controlled plate returns, when being defined as said master control borad channel registration expend time in used path, and the priority of said master control borad passage is according to the setting that expends time in of said path; Said default channel is in expending time in the path of all passages in the master control borad, and the shortest passage expends time in the path.
7. the method for communication between plates according to claim 5; It is characterized in that; The passage of the communication between plates between said registration master control borad and the controlled plate comprises: the passage of the communication between plates between registration master control borad and the controlled plate; And said master control borad sends route exploration message between said plate at least one controlled plate, and said controlled plate only sends route reply message between said plate to said master control borad.
8. the method for communication between plates according to claim 5; It is characterized in that the priority that passage is set comprises in said routing table:, the priority of master control borad passage is set according to the path of all passages of the master control borad size order that expends time in; If the path is expended time in equal; Relatively the channel number of passage is big or small again, and channel number is more little, and the priority of passage is high more.
9. the method for communication between plates according to claim 4; It is characterized in that; Default channel in the said master control borad routing table is replaced finger: said master control borad is through default channel route exploration message between controlled plate transmission board; Do not receive that in the preset time controlled plate returns route reply message between corresponding plate, the default channel in the then said master control borad routing table is replaced.
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| CN101986594B (en) * | 2010-11-18 | 2015-06-03 | 中兴通讯股份有限公司 | Method and device for realizing communication between single boards |
| CN102571383B (en) * | 2010-12-16 | 2015-06-17 | 腾讯科技（深圳）有限公司 | Access control method and system |
| CN103118063A (en) * | 2012-11-19 | 2013-05-22 | 苏州亿倍信息技术有限公司 | Method and system for software channel processing |
| CN106452854B (en) * | 2016-09-27 | 2019-04-26 | 南京国电南自轨道交通工程有限公司 | A kind of subway comprehensive monitoring system synchronous communication method based on multi-connection master-slave redundancy |
| CN106875501B (en) * | 2017-02-14 | 2019-05-31 | 江苏安防科技有限公司 | A kind of highway tolling system multichannel connection communication method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1472945A (en) * | 2002-08-02 | 2004-02-04 | 深圳市中兴通讯股份有限公司 | Board to board communication between distribution system objects |
| CN1956410A (en) * | 2005-10-24 | 2007-05-02 | 华为技术有限公司 | Method for implementing information interaction between single boards |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472945A (en) * | 2002-08-02 | 2004-02-04 | 深圳市中兴通讯股份有限公司 | Board to board communication between distribution system objects |
| CN1956410A (en) * | 2005-10-24 | 2007-05-02 | 华为技术有限公司 | Method for implementing information interaction between single boards |
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