CN104601411A - Link failure detection method and device - Google Patents
Link failure detection method and device Download PDFInfo
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- CN104601411A CN104601411A CN201510057160.4A CN201510057160A CN104601411A CN 104601411 A CN104601411 A CN 104601411A CN 201510057160 A CN201510057160 A CN 201510057160A CN 104601411 A CN104601411 A CN 104601411A
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Abstract
The invention discloses a link failure detection method and device, relates to the technical field of the computer network and aims to solve the problems in the prior art that faults of transmission links between transmitting terminal and receiving terminals can be judged only according to the message loss phenomenon, and when a plurality of links exist between the transmitting terminal and receiving terminals, which link has fault cannot be determined accurately. The link failure detection method includes that a transmitting terminal receives at least one diagnosis message sent by a diagnostic message generation terminal, wherein each diagnostic message carries preset information; the transmitting terminal obtains the serial number of each link used for transmitting the diagnostic messages according to the preset information in each diagnostic message; the transmitting terminal sends the diagnostic messages through the links corresponding to the serial numbers. The link failure detection method is applied to link fault detection.
Description
Technical field
The present invention relates to technical field of the computer network, particularly relate to a kind of method and device of link failure detection.
Background technology
According to OSI (Open System Interconnection is called for short OSI), when carrying out transfer of data in network layer, data are generally encapsulated in message to be transmitted.Because link layer has the characteristic of MTU (Maximum Transmission Unit is called for short MTU), the size of the packet transmitted in network layer need be less than MTU so that can by the physical medium in data link layer.Thus when packet is larger, the transmitting procedure of the message in network layer is specially: transmitting terminal is encapsulated in after data being cut into slices in the message fragment with different sequence number and sends, after receiving terminal receives all message fragments, after carrying out IP fragmentation and reassembly according to the sequence number carried in message fragment, obtain the data in message.
When receiving terminal carries out IP fragmentation and reassembly to the message received according to sequence number, may occurrence sequence number discontinuous situation, only can obtain according to this phenomenon the conclusion that transmission link exists fault in prior art, but owing to may there are many transmission links between transmitting terminal and receiving terminal, thus prior art cannot realize location which bar transmission link concrete and breaks down.
Summary of the invention
The invention provides a kind of method and device of link failure detection, in order to solve exist in prior art between transmitting terminal and receiving terminal, there is many transmission links time, prior art cannot realize locating the problem which bar transmission link concrete breaks down.
For achieving the above object, the present invention adopts following technical scheme:
First aspect, the invention provides a kind of method of link failure detection, described method is applied in data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described method comprises:
Described transmitting terminal receives at least one diagnosis message that described diagnosis message produces end transmission, and described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtains the link number of the link for sending each described diagnosis message;
Described transmitting terminal sends each described diagnosis message respectively by the link corresponding with described link number.
In conjunction with first aspect, in the first implementation of first aspect,
Described presupposed information comprises the sequence number of diagnosis message;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtaining the link number of the link for sending each described diagnosis message, specifically comprising:
There is corresponding relation in described presupposed information and described link number;
The sequence number of each diagnosis message by after default computing, is obtained the link number of the link for sending each described diagnosis message by described transmitting terminal.
In conjunction with first aspect, in the second implementation of first aspect,
Described presupposed information comprises link number;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtaining the link number of the link for sending each described diagnosis message, specifically comprising:
The described link number carried in each described diagnosis message is defined as the link number of the link for sending each described diagnosis message by described transmitting terminal.
Second aspect, the invention provides a kind of method of link failure detection, described method is applied in data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described method comprises:
Described receiving terminal is according to diagnosis message identification information, and identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message;
If identify at least one diagnosis message, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and has judged whether diagnosis message dropping;
If there is diagnosis message dropping, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and obtains the link number of the link of the diagnosis message for sending described loss;
Link corresponding for described link number is defined as faulty link by described receiving terminal.
In conjunction with second aspect, in the first implementation of second aspect,
Described presupposed information comprises sequence number;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, has judged whether diagnosis message dropping, has specifically comprised:
Described receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages;
If there is discontinuous sequence number, then obtain the judged result diagnosing message dropping;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, obtains the sequence number of the diagnosis message lost;
The sequence number of the diagnosis message of described loss after default computing, is obtained the link number of the link of the diagnosis message for sending described loss by described receiving terminal.
In conjunction with second aspect, in the second implementation of second aspect,
Described presupposed information comprises link number;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal, according to the link number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages;
If there is discontinuous link number, then obtain the judged result diagnosing message dropping;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal according to the link number that carries at least one the diagnosis message described identified, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss.
The third aspect, the invention provides a kind of device of link failure detection, described application of installation is in a kind of transmitting terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described device comprises:
Receiver module, produce at least one diagnosis message of end transmission for receiving described diagnosis message, described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information;
Processing module, for the presupposed information in each diagnosis message of receiving according to described receiver module, obtains the link number of the link for sending each described diagnosis message;
Sending module, for sending each described diagnosis message respectively by the link corresponding with described link number.
In conjunction with the third aspect, in the first implementation of the third aspect,
Described processing module, time also for comprising the sequence number diagnosing message when described presupposed information, by the sequence number of each diagnosis message by after default computing, obtains the link number of the link for sending each described diagnosis message.
In conjunction with the third aspect, in the second implementation of the third aspect,
Described processing module, also for when described presupposed information comprises link number, is defined as the link number of the link for sending each described diagnosis message by the described link number carried in each described diagnosis message.
Fourth aspect, present invention also offers a kind of device of link failure detection, described application of installation is in a kind of receiving terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described device comprises:
Identification module, for according to diagnosis message identification information, identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message;
Judge module, during for identifying at least one diagnosis message when described identification module, according to identifying, at least one diagnoses the presupposed information carried in message, has judged whether diagnosis message dropping;
Processing module, during for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the presupposed information carried in message, obtains the link number of the link of the diagnosis message for sending described loss;
Determination module, the link that the link number for described processing module being obtained is corresponding is defined as faulty link.
In conjunction with fourth aspect, in the first implementation of fourth aspect,
Described judge module, also for when described presupposed information comprises sequence number, according to identifying, at least one diagnoses the sequence number carried in message, sorts to all described diagnosis messages;
When there is discontinuous sequence number, obtain the judged result diagnosing message dropping;
Described processing module, time also for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the sequence number carried in message, obtains the sequence number of the diagnosis message lost;
By the sequence number of the diagnosis message of described loss after default computing, obtain the link number of the link of the diagnosis message for sending described loss.
In conjunction with fourth aspect, in the second implementation of fourth aspect,
Described judge module, also for when described presupposed information comprises link number, according to identifying, at least one diagnoses the link number carried in message, sorts to all described diagnosis messages;
When there is discontinuous link number, obtain the judged result diagnosing message dropping;
Described processing module, time also for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the link number carried in message, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss.
The method of a kind of link failure detection provided by the invention and device, transmitting terminal receives and comes from least one diagnosis message carrying presupposed information that diagnosis message produces end, and according to the presupposed information at least one the diagnosis message received, obtain the link number of the link for sending each diagnosis message; And send each diagnosis message respectively by the link corresponding with this link number, like this when receiving terminal does not receive certain diagnosis message, there is the result of fault in the link that can obtain for sending this diagnosis message.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of a kind of data transmission system that Fig. 1 provides for the embodiment of the present invention;
The flow chart of the method for a kind of link failure detection that Fig. 2 provides for the embodiment of the present invention;
The flow chart of the method for the another kind of link failure detection that Fig. 3 provides for the embodiment of the present invention;
The flow chart of the method for another link failure detection that Fig. 4 provides for the embodiment of the present invention;
The flow chart of the method for another link failure detection that Fig. 5 provides for the embodiment of the present invention;
The flow chart of the method for another link failure detection that Fig. 6 provides for the embodiment of the present invention;
The flow chart of the method for another link failure detection that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the device of a kind of link failure detection that Fig. 8 provides for the embodiment of the present invention;
The structural representation of the device of another link failure detection that Fig. 9 provides for the embodiment of the present invention;
The structural representation of the device of the another kind of link failure detection that Figure 10 provides for the embodiment of the present invention;
The structural representation of the device of another link failure detection that Figure 11 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the present embodiment, be clearly and completely described the technical scheme in the present embodiment, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to solve the conclusion that only can there is fault according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal existed in prior art, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine the problem of the link broken down, the invention provides a kind of method of link failure detection, the method is applied in data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message.
Wherein, described diagnosis message produces end for generation of diagnosis message, is equivalent to a diagnosis message and gives out a contract for a project device.
Described receiving terminal includes receiver module and diagnosis message processing module (MPM); Wherein, described receiver module is used for all messages by described at least one link receiving end/sending end transmission and identifies diagnosis message from all message received; Again all diagnosis messages identified are sent to diagnosis message processing module (MPM), make to diagnose message processing module (MPM) to carry out the detection of link failure according to the diagnosis message received.Described receiver module and described diagnosis message processing module (MPM) can be integrated in a kind of device and realize, and also can be two independently devices.
Be illustrated in figure 1 the schematic diagram of described data transmission system, described data transmission system comprises diagnosis message and produces end 11, transmitting terminal 12 and receiving terminal 13, and described receiving terminal 13 includes receiver module 14 and diagnosis message processing module (MPM) 15; There are link 1, link 2, link 3 and link 4 four links between described transmitting terminal 12 and described receiving terminal 13, every bar link is to there being at least one diagnosis message.
In addition, it should be noted that, in this data transmission system, also comprise service message generation device, for generation of the service message carrying data.It is two independently devices that service message generation device produces end with diagnosis message, can regard the generation source of service message and diagnosis message respectively as.
As shown in Figure 2, the method comprises:
201: transmitting terminal receives at least one diagnosis message that described diagnosis message produces end transmission, and described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information.
Wherein, described diagnosis message is a kind of message being different from service message, and diagnosis message has heading, but the data of its transmission are empty.Diagnosis message act as after receiving terminal receives all messages, identify diagnosis message wherein, all diagnosis messages are sent to diagnosis message receiving system, so that this diagnosis message receiving system has judged whether diagnosis message dropping, if had, according to the link number of the diagnosis message lost, obtain the judged result of the link failure corresponding with this link number.
Diagnosis message carries identification information, identifies diagnosis message for transmitting terminal and receiving terminal according to this identification information from numerous message.
Diagnosis message also carries presupposed information, is used to indicate the transmitting terminal link corresponding according to this presupposed information and sends this diagnosis message.
Above-mentioned identification information and presupposed information all can by arranging in heading some field not affecting message transmissions and identification.
Above-mentioned identification information and presupposed information can also be represented by new field.Such as: on the basis of the heading of original 24 bytes, the field of 1 byte or 2 bytes is increased respectively for the above-mentioned identification information of increase and presupposed information.The size of the heading of such diagnosis message is extended for 25 bytes or 26 bytes.
Such as: a newly-increased Packet_type field is used for the type of identification message, when the value of this field is 0, represents that this message is service message; Represent that when the value of this field is 1 this field is for diagnosis message; A newly-increased packet_sn field, for adding described presupposed information.
It should be noted that, in the specific implementation process of this step, in the message that transmitting terminal receives, except diagnosis message produces except the diagnosis message of end generation, also comprise the service message that service message generation device produces, and the message received has randomness, thus transmitting terminal needs to identify diagnosis message according to diagnosis message identifying information from all messages received.
202: transmitting terminal, according to the presupposed information in each diagnosis message, obtains the link number of the link for sending each described diagnosis message.
As mentioned above, diagnosis message also carries described presupposed information, direct or indirect corresponding relation is there is in described presupposed information with the link number of the link for sending this diagnosis message, transmitting terminal, by resolving this presupposed information, can obtain the link number of the link for sending this diagnosis message.The direct corresponding relation of indication refers to that this presupposed information can directly be confirmed as this link number by transmitting terminal, and the indirectly corresponding relation of indication refers to that this presupposed information can be obtained this link number by transmitting terminal after certain computing.
203: transmitting terminal sends each described diagnosis message respectively by the link corresponding with described link number.
Link between transmitting terminal and receiving terminal carries out the message transmitted, except diagnosis message, carry the service message of data in addition.Transmitting terminal, when sending service message, according to the feature of link, can be calculated by RR algorithm, DRR algorithm or WRR algorithm and sends certain service message link used, and send service message by this link.
With transmission service message unlike, the link sending each diagnosis message is obtain through above-mentioned steps 202, and the link that the link number determined by step 202 of transmitting terminal is corresponding sends each diagnosis message.
It should be noted that, certain bandwidth can be occupied owing to diagnosing the transmission of message; Thus in order to save bandwidth, the quantity of the diagnosis message that every bar link is corresponding should be lacked as far as possible; In addition, because the probability of every bar link occurs fault is identical, thus in the present embodiment, for detecting certain link, whether to there is the quantity of the diagnosis message of fault identical.Such as: between transmitting terminal and receiving terminal, there are 4 links, every bar link is all to 2 should be had to diagnose message.
The method of a kind of link failure detection provided by the invention, transmitting terminal receives and comes from least one diagnosis message carrying presupposed information that diagnosis message produces end, and according to the presupposed information at least one the diagnosis message received, obtain the link number of the link for sending each diagnosis message; And send each diagnosis message respectively by the link corresponding with this link number, like this when receiving terminal does not receive certain diagnosis message, there is the result of fault in the link that can obtain for sending this diagnosis message.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
In the specific implementation process of step 202, because presupposed information may have different implementations, the implementation procedure of thus corresponding step 202 also may be different.
In a kind of implementation of the present embodiment, described diagnosis message carries sequence number, and described presupposed information comprises described sequence number.
The sequence number that described diagnosis message carries and for send the link diagnosing message link number between there is corresponding relation.Such as: in the data transmission system of computer network, there are 3 links between transmitting terminal and receiving terminal: link 1, link 2 and link 3; The sequence number of the diagnosis message of link 1 correspondence is 1, and the sequence number of the diagnosis message of link 2 correspondence is 2, and the sequence number of the diagnosis message of link 3 correspondence is 3.
It should be noted that, because diagnosis message does not comprise data, thus without the need to carrying out burst process to diagnosis message; In order to represent the corresponding relation of diagnosis message and link, needing to carry out sequencing numbers to diagnosis message, making each diagnosis message have a sequence number, and the numbering of the link of its correspondence can be obtained by this sequence number.Meanwhile, to send in service message because described diagnosis message interts, in order to not affect the identification of service message and be convenient to the restructuring of receiving terminal to service message; The diagnosis sequence of message is independently separate with the sequence of service message, and the sequence number of described diagnosis message is to after the sequence of all diagnosis messages, the sequence number that each diagnosis message obtains.
Accordingly, as shown in Figure 3, above-mentioned steps 202 can be refined as following step 301:
301: the sequence number of each diagnosis message by after default computing, is obtained the link number of the link for sending each described diagnosis message by transmitting terminal.
Wherein this default computing can be the number complementation computing by the sequence number of each diagnosis message and total link.Such as: when there is 3 links in network, when the sequence number of diagnosis message is 1, the value of the remainder obtained after carrying out complementation computing is 1, then the link number that this diagnosis message is corresponding is 1; When the sequence number of diagnosis message is 2, the value of the remainder obtained after carrying out complementation computing is 2, then the link number that this diagnosis message is corresponding is 2, when the sequence number of diagnosis message is 3, the value of the remainder obtained after carrying out complementation computing is 0, then the link number that this diagnosis message is corresponding is 3; The like, according to the sequence number of each diagnosis message, the link number of the link for sending each diagnosis message can be obtained.
In the another kind of implementation of the present embodiment, described diagnosis message carries link number, and described presupposed information comprises described link number.
Accordingly, as shown in Figure 4, above-mentioned steps 202 can be refined as following step 401:
401: the described link number carried in each described diagnosis message is defined as the link number of the link for sending each described diagnosis message by transmitting terminal.
Except indirectly obtaining except the link number of the link for sending each diagnosis message according to the sequence number of each diagnosis message, the present embodiment additionally provides a kind of link number directly link number in each diagnosis message being defined as the link for sending each diagnosis message.Like this, can save the computational process that the above-mentioned sequence number by each diagnosis message obtains the link number diagnosing message after computing, implementation procedure is simplified.
Supplementing as method shown in above-mentioned each figure, the embodiment of the present invention additionally provides a kind of method of link failure detection, the method is applied in data transmission system, described data transmission system comprises diagnosis report message and produces end, transmitting terminal and receiving terminal, there is at least one link between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message.
As shown in Figure 5, the method comprises:
501: receiving terminal is according to diagnosis message identification information, and identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message.
Wherein, the diagnosis message identification information of indication and presupposed information are for diagnosis message generation device is when producing diagnosis message, and for each diagnosis message adds, its specific implementation sees above described in step 201, repeats no more in this step.
The message received due to receiving terminal both may comprise service message, also comprised diagnosis message, thus needed from all messages received, to identify diagnosis message according to diagnosis message identification information, and was handled as follows respectively according to recognition result:
When only there is a link between transmitting terminal and receiving terminal, if receiving terminal unidentified go out any diagnosis message, then can determine that this link exists fault.
When there are two and two with uplink between transmitting terminal and receiving terminal, if unidentified go out any diagnosis message, then can think the equal fault of all links; Otherwise, if identify at least one diagnosis message, then show to there is the link broken down, whether there is faulty link and which concrete bar link and there is fault and need further to judge to step 504 according to step 502.
502: if identify at least one diagnosis message, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and has judged whether diagnosis message dropping.
In this step, the presupposed information of indication can be the sequence number of diagnosis message, can also for diagnosing the link number that message is corresponding.
Optionally, in this step, receiving terminal, according to the presupposed information carried in the diagnosis message identified, sorts to all diagnosis messages identified, when sequence number is discontinuous, then can be determined with diagnosis message dropping.
503: if there is diagnosis message dropping, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and obtains the link number of the link of the diagnosis message for sending described loss.
When step 502 has determined diagnosis message dropping, this step is the presupposed information according to the diagnosis message received, obtain the presupposed information of diagnosis message lost, then according to the presupposed information of the diagnosis message lost, obtain the link number of the link of the diagnosis message for sending described loss.
According to the different implementations of presupposed information, step 502 is different with the specific implementation process of step 503.
In a kind of implementation of the present embodiment, described diagnosis message carries sequence number, and described presupposed information comprises described sequence number.
As shown in Figure 6, step 502 can specifically be refined as following step 601 and 602:
601: receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages.
602: if there is discontinuous sequence number, then obtain the judged result diagnosing message dropping.
Accordingly when there being diagnosis message dropping, above-mentioned steps 503 can be further refined as following step 603 and 604.
603: receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, obtains the sequence number of the diagnosis message lost.
604: the sequence number of the diagnosis message of described loss after default computing, is obtained the link number of the link of the diagnosis message for sending described loss by receiving terminal.
Wherein, the default computing of indication is complementation computing, with reference to the description to default computing in step 301 above, can repeat no more in this step.
In order to carry out clearer explanation to the implementation described in above-mentioned steps 601 to step 604, set forth by way of example below.Such as: between described transmitting terminal and receiving terminal, co-exist in 3 links, corresponding two the diagnosis messages of every bar link, the sequence number of the diagnosis message that described receiving terminal receives is respectively 1,3,4,6, also namely there is discontinuous sequence number 2 between 1 and 3, there is discontinuous sequence number 5 between 4 and 6, then obtain the diagnosis judged result of message dropping and the sequence number of the diagnosis message of this loss is respectively 2 and 5; After carrying out complementation computing to 3 respectively by 2 and 5, obtain remainder and be 2, and then can determine that link 2 exists fault.
In the another kind of implementation of the present embodiment, described diagnosis message carries link number, and described presupposed information comprises described link number.
As shown in Figure 7, above-mentioned steps 502 can specifically be refined as following step 701 and 702:
701: receiving terminal, according to the link number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages.
Due to the sequential characteristic of the tool of link number own, can sort to all diagnosis messages received according to link number.
702: if there is discontinuous link number, then obtain the judged result diagnosing message dropping.
Accordingly, above-mentioned steps 503 can be refined as following step 703 and step 704:
703: receiving terminal according to the link number that carries at least one the diagnosis message described identified, the link number that the diagnosis message obtaining losing carries.
704: the link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss by receiving terminal.
In order to clearly illustrate the implementation described in above-mentioned steps 701 to step 704, set forth in conjunction with example below.
Such as: between described transmitting terminal and receiving terminal, co-exist in 3 links, corresponding two the diagnosis messages of every bar link, the link number of the diagnosis message that described receiving terminal receives is respectively 1,3,1,3, also namely there is discontinuous link number 2 between 1 and 3, then obtain the diagnosis judged result of message dropping and the link number of the diagnosis message of this loss is 2, and then link 2 can be obtained for faulty link.
504: link corresponding for described link number is defined as faulty link by receiving terminal.
The method of a kind of link failure detection provided by the invention, receiving terminal identifies diagnosis message according to diagnosis message identification information from all messages received, whether there are diagnosis message dropping and the link number for the diagnosis message that sends described loss according to the presupposed information carried in each diagnosis message again, and then link corresponding for this link number is defined as faulty link.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
As application and the realization of method shown in upper figure, the embodiment of the present invention additionally provides a kind of device of link failure detection, described application of installation is in a kind of transmitting terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, there is at least one link between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message.As shown in Figure 8, described device comprises:
Receiver module 801, produce at least one diagnosis message of end transmission for receiving described diagnosis message, described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information.
Processing module 802, for the presupposed information in each diagnosis message of receiving according to described receiver module, obtains the link number of the link for sending each described diagnosis message.
Sending module 803, for sending each described diagnosis message respectively by the link corresponding with described link number.
Further, processing module 802, time also for comprising the sequence number diagnosing message when described presupposed information, by the sequence number of each diagnosis message by after default computing, obtains the link number of the link for sending each described diagnosis message.
Further, processing module 802, also for when described presupposed information comprises link number, is defined as the link number of the link for sending each described diagnosis message by the described link number carried in each described diagnosis message.
The device of a kind of link failure detection provided by the invention, transmitting terminal receives and comes from least one diagnosis message carrying presupposed information that diagnosis message produces end, and according to the presupposed information at least one the diagnosis message received, obtain the link number of the link for sending each diagnosis message; And send each diagnosis message respectively by the link corresponding with this link number, like this when receiving terminal does not receive certain diagnosis message, there is the result of fault in the link that can obtain for sending this diagnosis message.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
Present invention also offers a kind of device of link failure detection, this application of installation is in a kind of receiving terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, as shown in Figure 9, this device comprises:
Identification module 901, for according to diagnosis message identification information, identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message.
Judge module 902, during for identifying at least one diagnosis message when identification module 901, according to identifying, at least one diagnoses the presupposed information carried in message, has judged whether diagnosis message dropping.
Processing module 903, during for having determined diagnosis message dropping when judge module 902, according to identifying, at least one diagnoses the presupposed information carried in message, obtains the link number of the link of the diagnosis message for sending described loss.
Determination module 904, the link that the link number for processing module 903 being obtained is corresponding is defined as faulty link.
Further, described judge module 902, also for when described presupposed information comprises sequence number, according to identifying, at least one diagnoses the sequence number carried in message, sorts to all described diagnosis messages;
When there is discontinuous sequence number, obtain the judged result diagnosing message dropping.
Processing module 903, time also for having determined diagnosis message dropping when judge module 902, according to identifying, at least one diagnoses the sequence number carried in message, obtains the sequence number of the diagnosis message lost;
By the sequence number of the diagnosis message of described loss after default computing, obtain the link number of the link of the diagnosis message for sending described loss.
Further, described judge module 902, also for when described presupposed information comprises link number, according to identifying, at least one diagnoses the link number carried in message, sorts to all described diagnosis messages;
When there is discontinuous link number, obtain the judged result diagnosing message dropping.
Described processing module 903, time also for having determined diagnosis message dropping when judge module 902, according to identifying, at least one diagnoses the link number carried in message, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss.
The device of a kind of link failure detection provided by the invention, receiving terminal identifies diagnosis message according to diagnosis message identification information from all messages received, whether there are diagnosis message dropping and the link number for the diagnosis message that sends described loss according to the presupposed information carried in each diagnosis message again, and then link corresponding for this link number is defined as faulty link.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
The embodiment of the present invention additionally provides a kind of device of link failure detection, described application of installation is in a kind of transmitting terminal of data transmission system, this data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, there is at least one link between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message.As shown in Figure 10, described device comprises receiver 1001, processor 1002, reflector 1003, memory 1004 and bus 1005, and receiver 1001, processor 1002, reflector 1003 are connected by bus 1005 with memory 1004, wherein:
Receiver 1001, produce at least one diagnosis message of end transmission for receiving described diagnosis message, described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information;
The diagnosis message that memory 1004 receives for storing receiver 1001.
Processor 1002, for reading the diagnosis message stored in memory 1004, and according to the presupposed information in each diagnosis message, obtains the link number of the link for sending each described diagnosis message;
Reflector 1003, for sending each described diagnosis message respectively by the link corresponding with described link number.
Further, described processor 1002, time also for comprising the sequence number diagnosing message when described presupposed information, by the sequence number of each diagnosis message by after default computing, obtains the link number of the link for sending each described diagnosis message.
Further, described processor 1002, also for when described presupposed information comprises link number, is defined as the link number of the link for sending each described diagnosis message by the described link number carried in each described diagnosis message.
The device of a kind of link failure detection provided by the invention, transmitting terminal receives and comes from least one diagnosis message carrying presupposed information that diagnosis message produces end, and according to the presupposed information at least one the diagnosis message received, obtain the link number of the link for sending each diagnosis message; And send each diagnosis message respectively by the link corresponding with this link number, like this when receiving terminal does not receive certain diagnosis message, there is the result of fault in the link that can obtain for sending this diagnosis message.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
Embodiments provide a kind of device of link failure detection, this application of installation is in the receiving terminal of data transmission system, this data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, as shown in figure 11, this device comprises receiver 1101, memory 1102, processor 1103 and bus 1104, receiver 1101, memory 1102 are connected by bus 1104 with processor 1103, wherein:
Described receiver 1101, all messages that the reflector for receiving described transmitting terminal sends.
Described memory 1102, for storing all messages that described receiver 1101 receives.
Described processor 1103, for according to diagnosis message identification information, identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message;
If identify at least one diagnosis message, then according to the presupposed information carried at least one the diagnosis message described identified, judge whether diagnosis message dropping;
If there is diagnosis message dropping, then according to the presupposed information carried at least one the diagnosis message described identified, obtain the link number of the link of the diagnosis message for sending described loss;
Link corresponding for described link number is defined as faulty link.
Further, described processor 1103, also for when described presupposed information comprises sequence number, according to identifying, at least one diagnoses the sequence number carried in message, sorts to all described diagnosis messages;
If there is discontinuous sequence number, then obtain the judged result diagnosing message dropping.
Described processor 1103, also at least one diagnoses the sequence number carried in message according to identifying, obtains the sequence number of the diagnosis message lost;
By the sequence number of the diagnosis message of described loss after default computing, obtain the link number of the link of the diagnosis message for sending described loss.
Further, described processor 1103, also for when described presupposed information comprises link number, according to identifying, at least one diagnoses the link number carried in message, sorts to all described diagnosis messages;
If there is discontinuous link number, then obtain the judged result diagnosing message dropping;
Further, described processor 1103, also for according to identifying, at least one diagnoses the link number carried in message, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss.。
The device of a kind of link failure detection provided by the invention, receiving terminal identifies diagnosis message according to diagnosis message identification information from all messages received, whether there are diagnosis message dropping and the link number for the diagnosis message that sends described loss according to the presupposed information carried in each diagnosis message again, and then link corresponding for this link number is defined as faulty link.And the conclusion of fault only can be there is in prior art according to the message packet loss phenomenon transmission link obtained between transmitting terminal and receiving terminal, when there is multilink between transmitting terminal and receiving terminal, accurately cannot determine that the link broken down is compared, the present invention is by sending at least one diagnosis message on each link, can realize judging whether there is fault with the link diagnosing message corresponding timely according to whether receiving diagnosis message, thus can accurately locate the link broken down, and then improve the efficiency of link failure detection.
It should be noted that, the processor 1002 described in the embodiment of the present invention or processor 1103 can be processors, also can be the general designations of multiple treatment element.Such as, this processor 1002 or processor 1103 can be central processing unit (Central Processing Unit, be called for short CPU), also can be specific integrated circuit (Application Specific Integrated Circuit, be called for short ASIC), or be configured to the one or more integrated circuits implementing the embodiment of the present invention, such as: one or more microprocessor (digital signal processor, be called for short DSP), or, one or more field programmable gate array (Field Programmable Gate Array, be called for short FPGA).
Memory 1004 or memory 1102 can be storage devices, also can be the general designations of multiple memory element, and for stores executable programs code etc.And memory 1004 or memory 1102 can comprise random asccess memory (RAM), nonvolatile memory (non-volatile memory) also can be comprised, such as magnetic disc store, flash memory (Flash) etc.
Bus 1005 or bus 1104 can be industry standard architecture (Industry StandardArchitecture, ISA) bus, peripheral component interconnect (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended Industry StandardArchitecture, EISA) bus etc.This bus 1005 or bus 1104 can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a thick line in Figure 10 and Figure 11, but not representing the bus only having a bus or a type.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computer, hard disk or CD etc., comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.
Claims (12)
1. the method for link failure detection, it is characterized in that, described method is applied in data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described method comprises:
Described transmitting terminal receives at least one diagnosis message that described diagnosis message produces end transmission, and described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtains the link number of the link for sending each described diagnosis message;
Described transmitting terminal sends each described diagnosis message respectively by the link corresponding with described link number.
2. the method for link failure detection according to claim 1, is characterized in that,
Described presupposed information comprises the sequence number of diagnosis message;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtaining the link number of the link for sending each described diagnosis message, specifically comprising:
There is corresponding relation in described presupposed information and described link number;
The sequence number of each diagnosis message by after default computing, is obtained the link number of the link for sending each described diagnosis message by described transmitting terminal.
3. the method for link failure detection according to claim 1, is characterized in that,
Described presupposed information comprises link number;
Described transmitting terminal, according to the presupposed information in each diagnosis message, obtaining the link number of the link for sending each described diagnosis message, specifically comprising:
The described link number carried in each described diagnosis message is defined as the link number of the link for sending each described diagnosis message by described transmitting terminal.
4. the method for link failure detection, it is characterized in that, described method is applied in data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described method comprises:
Described receiving terminal is according to diagnosis message identification information, and identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message;
If identify at least one diagnosis message, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and has judged whether diagnosis message dropping;
If there is diagnosis message dropping, then described receiving terminal is according to the presupposed information carried at least one the diagnosis message described identified, and obtains the link number of the link of the diagnosis message for sending described loss;
Link corresponding for described link number is defined as faulty link by described receiving terminal.
5. the method for link failure detection according to claim 4, is characterized in that,
Described presupposed information comprises sequence number;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, has judged whether diagnosis message dropping, has specifically comprised:
Described receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages;
If there is discontinuous sequence number, then obtain the judged result diagnosing message dropping;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal, according to the sequence number carried at least one the diagnosis message described identified, obtains the sequence number of the diagnosis message lost;
The sequence number of the diagnosis message of described loss after default computing, is obtained the link number of the link of the diagnosis message for sending described loss by described receiving terminal.
6. the method for link failure detection according to claim 4, is characterized in that,
Described presupposed information comprises link number;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal, according to the link number carried at least one the diagnosis message described identified, sorts to all described diagnosis messages;
If there is discontinuous link number, then obtain the judged result diagnosing message dropping;
Described receiving terminal, according to the presupposed information carried at least one the diagnosis message described identified, obtaining the link number of the link of the diagnosis message for sending described loss, specifically comprising:
Described receiving terminal according to the link number that carries at least one the diagnosis message described identified, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss by described receiving terminal.
7. the device of link failure detection, it is characterized in that, described application of installation is in a kind of transmitting terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described device comprises:
Receiver module, produce at least one diagnosis message of end transmission for receiving described diagnosis message, described diagnosis message produces end for generation of described diagnosis message, and each described diagnosis message carries presupposed information;
Processing module, for the presupposed information in each diagnosis message of receiving according to described receiver module, obtains the link number of the link for sending each described diagnosis message;
Sending module, for sending each described diagnosis message respectively by the link corresponding with described link number.
8. the device of link failure detection according to claim 7, is characterized in that,
Described processing module, time also for comprising the sequence number diagnosing message when described presupposed information, by the sequence number of each diagnosis message by after default computing, obtains the link number of the link for sending each described diagnosis message.
9. the device of link failure detection according to claim 7, is characterized in that,
Described processing module, also for when described presupposed information comprises link number, is defined as the link number of the link for sending each described diagnosis message by the described link number carried in each described diagnosis message.
10. the device of link failure detection, it is characterized in that, described application of installation is in a kind of receiving terminal of data transmission system, described data transmission system comprises diagnosis message and produces end, transmitting terminal and receiving terminal, at least one link is there is between described transmitting terminal and described receiving terminal, every bar link is to there being at least one diagnosis message, and described device comprises:
Identification module, for according to diagnosis message identification information, identifying and diagnosing message from all messages received, carries described diagnosis message identification information and presetting message in described diagnosis message;
Judge module, during for identifying at least one diagnosis message when described identification module, according to identifying, at least one diagnoses the presupposed information carried in message, has judged whether diagnosis message dropping;
Processing module, during for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the presupposed information carried in message, obtains the link number of the link of the diagnosis message for sending described loss;
Determination module, the link that the link number for described processing module being obtained is corresponding is defined as faulty link.
The device of 11. link failure detection according to claim 10, is characterized in that,
Described judge module, also for when described presupposed information comprises sequence number, according to identifying, at least one diagnoses the sequence number carried in message, sorts to all described diagnosis messages;
When there is discontinuous sequence number, obtain the judged result diagnosing message dropping;
Described processing module, time also for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the sequence number carried in message, obtains the sequence number of the diagnosis message lost;
By the sequence number of the diagnosis message of described loss after default computing, obtain the link number of the link of the diagnosis message for sending described loss.
The device of 12. link failure detection according to claim 10, is characterized in that,
Described judge module, also for when described presupposed information comprises link number, according to identifying, at least one diagnoses the link number carried in message, sorts to all described diagnosis messages;
When there is discontinuous link number, obtain the judged result diagnosing message dropping;
Described processing module, time also for having determined diagnosis message dropping when described judge module, according to identifying, at least one diagnoses the link number carried in message, the link number that the diagnosis message obtaining losing carries;
The link number that the diagnosis message of described loss carries is defined as the link number of the link of the diagnosis message for sending described loss.
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