CN101800679B - Message packet loss detection method and system - Google Patents
Message packet loss detection method and system Download PDFInfo
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- CN101800679B CN101800679B CN2010101239257A CN201010123925A CN101800679B CN 101800679 B CN101800679 B CN 101800679B CN 2010101239257 A CN2010101239257 A CN 2010101239257A CN 201010123925 A CN201010123925 A CN 201010123925A CN 101800679 B CN101800679 B CN 101800679B
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Abstract
The embodiment of the invention discloses a message packet loss detection method and a message packet loss detection system. The message packet loss detection method comprises that: a pseudowire transmitting end transmits a loss measurement message LMM message to a pseudowire receiving end, wherein the pseudowire comprises at least two equivalent paths, and the LMM message comprises first indication information corresponding to each equivalent path; the pseudowire transmitting end receives a corresponding loss measurement reply LMR message transmitted after the pseudowire receiving end sorts the LMM message, wherein the LMR message comprises second indication information corresponding to the first indication information; the pseudowire transmitting end sorts the LMR message according to the second indication information, and acquires the message packet loss rate of the pseudowire according to a value of a counter for the LMR message. Due to the embodiment of the invention, when a plurality of equivalent paths are present in PW, actually transmitted message flux of the PW can be detected. Therefore, the message packet loss rate of the PW is acquired.
Description
Technical field
The present invention relates to communication technical field, more particularly, relate to a kind of message packet loss detection method and system.
Background technology
Y.1731 agreement generally is deployed in user side equipment (CE) or operator's equipment (PE) node, is used for traffic failure fast detecting and performance monitoring end to end.Y.1731 support and 802.1ag, 802.3ah, BFD (Bidirectional Forwarding Detection; Two-way forwarding detects) etc. the detection protocol interlock, can be delivered to remote equipment or receive the remote equipment preliminary warning notice and carry out business switching detecting defective.
When the user thinks Ethernet virtual local area network (LAN) (the Virtual Local Area Network that buys; VLAN) service quality problem has appearred in the tunnel; Or operator carries out customary service-level agreement (Service Level Agreement; SLA) monitoring can be used Y.1731 defined performance testing tool.For example: (Continuity Check Messages, CCM) counter can carry out the packet loss statistics based on flow, draw frame loss rate through relatively more local counter and the far-end counter that produces that is: through sending and receive continuity check message; Perhaps; Y.1731 through using the timestamp that postpones to handle in the message to calculate frame delay: user entity (User Plane Entity; UPE) to far-end PE peer-to-peer Maintenance Entity end points (Maintenance Entity Group end point; MEP) send the ethernet mac layer network latency measurement message that contains solicited message; And receive ethernet mac (Media Access Control, medium access control) the layer network latency measurement contain response message from peer-to-peer MEP and reply, calculate bidirectional frame through timestamp then and postpone and postpone to change (shake).
In the actual networking; Usually Y.1731 the subordinate is used for a pseudo-line (Pseudo Wire; PW) carry out message packet loss statistics; Because the interface of PW network side is three layers of physics mouth normally, can't dispose MEP (MEP can only be deployed in two layers of physics mouth or bilaminar logic mouth and tri-level logic mouth), therefore can only insert the MEP that side interface is disposed the Inward type the user of PW; In addition, also exist and have many label switched paths among the PW simultaneously (Label Switched Path, scene LSP) can't be disposed MEP at network side equally, and can only be chosen in the MEP of the Inward of AC sidepiece administration type.
The inventor finds that in research process there is following weak point at least in prior art:
Not only difficulty is big in realization to carry out the flow counting based on MEP, and efficient is low.When there is a plurality of LSP outgoing interface in the PW side; Loss measurement message (Loss Measure Message; LMM) message and loss measurement reply (Loss Measure Response, LMR) the transmitting counter territory of message is based on corresponding outgoing interface and carries out the flow counting, therefore; Cause the transmitting counter numerical value of LMM and LMR message only to represent the message flow under certain interface, and actual transmission message flow that can't authentic representative PW.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of message packet loss detection method and system, when there is a plurality of equative route in PW, can the actual transmission message flow of PW be detected, thereby obtain PW the message packet loss.
The embodiment of the invention provides a kind of message packet loss detection method, and said method comprises:
Pseudo-line transmitting terminal sends loss measurement message LMM message to pseudo-line receiving terminal; Wherein, Said pseudo-line comprises at least two equative routes; Said LMM message comprises first indication information of corresponding each bar equative route, and said first indication information comprises: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch;
Said pseudo-line transmitting terminal receives said pseudo-line receiving terminal to said LMM message being sorted out the corresponding loss measurement answer LMR message that send the back; Said LMR message comprises second indication information of corresponding said first indication information; Said second indication information comprises: represent that respectively said LMR message belongs to identical answer batch; Expression generate identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch; Wherein said LMM message is sorted out and comprised: said pseudo-line receiving terminal is according to the identification information of the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch; And with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch;
Said pseudo-line transmitting terminal is sorted out said LMR message according to said second indication information; Obtain the message packet loss of said pseudo-line according to the counter values of said LMR message; Wherein said LMR message is sorted out and comprised: said pseudo-line transmitting terminal belongs to the identification information of identical answer batch according to the said LMR message of expression; Mark off the LMR message that belongs to same answer batch; Statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch; And with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages that each outbound port receives in the identical answer batch.
A kind of message packet loss detection system comprises: pseudo-line transmitting terminal and pseudo-line receiving terminal; Said pseudo-line comprises at least two equative routes, and wherein, said pseudo-line transmitting terminal comprises:
LMM message sending module; Be used to send the LMM message; Said LMM message comprises first indication information of corresponding each bar equative route, and said first indication information comprises: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch;
LMR message receiver module is used to receive the LMR message that said pseudo-line receiving terminal sends;
The LMR message processing module (MPM); Second indication information of corresponding said first indication information that is used for comprising according to said LMR message is sorted out said LMR message; Obtain the message packet loss of said pseudo-line according to the counter values of said LMR message; Said second indication information comprises: represent that respectively said LMR message belongs to identical answer batch; Expression generate identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch; And said LMR message processing module (MPM) comprises: LMR message classification submodule; Said LMR message classification submodule is used for belonging to according to the said LMR message of expression the identification information of identical answer batch, marks off the LMR message that belongs to same answer batch, and statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch; And with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages that each outbound port receives in the identical answer batch;
Said pseudo-line receiving terminal comprises:
LMM message receiver module is used to receive said LMM message;
The LMM message processing module (MPM); Be used for according to said first indication information; Said LMM message is sorted out; Obtain individual count device numerical value required in the said LMR message, and said LMM message processing module (MPM) comprises: LMM message classification submodule, said LMM message classification submodule are used for the identification information according to the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch, and with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch;
The LMR message is replied module, is used for sending corresponding LMR message to said pseudo-line transmitting terminal, and said LMR message comprises said second indication information.
Compare with prior art, the technical scheme that the embodiment of the invention provides has the following advantages:
When pseudo-line possesses many equative routes simultaneously; Indication information through the corresponding equative route of difference in LMM message and the LMR message; LMM message and LMR message to transmitting on each bar link are sorted out, and construct LMM message and the entrained counter information of LMR message again, make that the counter of LMM message and LMR message not only can corresponding any equative route; And can corresponding whole pseudo-line; Thereby, can the actual transmission message flow of whole pseudo-line be detected, thus obtain pseudo-line the message packet loss.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of steps of a kind of message packet loss detection method of the embodiment of the invention;
Fig. 2 is a kind of pseudo-line sketch map that possesses two equative routes simultaneously in the embodiment of the invention;
Fig. 3 is the LMM message format in the embodiment of the invention;
Fig. 4 is the LMR message format in the embodiment of the invention;
Fig. 5 is the structural representation of a kind of message packet loss detection system in the embodiment of the invention;
Fig. 6 is the structural representation of another kind of message packet loss detection system in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, complete description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
At first, the embodiment of the invention provides a kind of message packet loss detection method, and is as shown in Figure 1, and said method can may further comprise the steps:
Usually, when transmitting terminal that relates to when pseudo-line and receiving terminal all have only a port, think that then this puppet line only comprises a transmission paths, does not exist other equative routes.The transmitting terminal and the receiving terminal that relate to when pseudo-line respectively have a plurality of ports, and the port between transmitting terminal and the receiving terminal then should possess many equative routes by the puppet line when having one to one annexation simultaneously.
Under the normal condition; When pseudo-line possesses many equative routes simultaneously; The Business Stream in arbitrary moment can select a certain paths in the equative route to send, and corresponding LMM message also can transmit with the Business Stream transmission path, when the path of twice LMM message flow of adjacent moment warp not simultaneously; Because the equal separate counts of counter that the outgoing interface of each paths in the equative route sends; Uncorrelated mutually, therefore, can not directly utilize the counter values of carrying in twice LMM message to carry out the message packet loss and calculate; As a same reason, when the path of twice LMM message flow of adjacent moment warp not simultaneously, can not directly utilize the counter values of carrying in twice LMR message to carry out the message packet loss and calculate.It is thus clear that; When pseudo-line possesses many equative routes simultaneously; If the path of the path difference of twice LMM message flow of adjacent moment warp or twice LMR message flow of adjacent moment warp is different, then can not obtain the actual message transmitted traffic of whole pseudo-line according to the counter values of carrying in LMM message and the LMR message.
Consider above-mentioned defective of the prior art; The embodiment of the invention, is sorted out the LMM message and the LMR message that transmit on each bar link through the indication information of the corresponding equative route of difference in LMM message and the LMR message to the pseudo-line that possesses many equative routes simultaneously; Again construct LMM message and the entrained counter information of LMR message; Make that the counter of LMM message and LMR message not only can corresponding any equative route, and can corresponding whole pseudo-line, thereby; Can the actual transmission message flow of whole pseudo-line be detected, thereby obtain the message packet loss of pseudo-line.
For the ease of to the making much of of embodiment of the invention technical scheme,, the present invention is carried out clear, complete description below in conjunction with the embodiment of the embodiment of the invention.
Need to prove; Though LMM message and LMR message are still sent by the separate port of pseudo-line sending and receiving end; But, in the embodiment of the invention, embody the corresponding relation of concrete message and whole pseudo-line through corresponding indication information; Make that the counter of LMM message and LMR message not only can corresponding any equative route, and can corresponding whole pseudo-line.Thus it is clear that,, can conveniently obtain the message packet loss of whole pseudo-line through the LMM message and the LMR message of constructing in the embodiment of the invention technical scheme.
When realizing the embodiment of the invention, first indication information in the LMM message comprises concrete: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch.
For with the LMM message in said first indication information corresponding; Second indication information in the LMR message comprises: represent that respectively said LMR message belongs to identical answer batch, expression generate identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch.
Wherein, if detect batch identically, then the relevant LMM message of expression is promptly carrying out the same time transmission of message packet loss detection for sending simultaneously to pseudo-line; Reply batch identically, then the relevant LMR message of expression generates to same batch LMM message; Because the LMM message is sent by the separate port of pseudo-line sending and receiving end, visible, the number in the number homology equivalence path of LMM message and LMR message is identical; In addition, through the identification information of genesis sequence under the expression message, can know judge whether to generate same detection batch or reply batch in all messages of corresponding equative route.
In the embodiment of the invention, the concrete implementation that said transmitting terminal sends the LMM message comprises:
Said transmitting terminal detects batch presetting, and according to said equative route number, duplicates the said LMM message of respective number;
The outbound port of each equative route of correspondence that is comprised by said transmitting terminal respectively is provided with the transmitting counter numerical value of the port in corresponding LMM message after, be sent to the receiving port of each equative route of correspondence that said receiving terminal comprises.
When certain outbound port of said transmitting terminal generated the LMM message to corresponding equative route, the LMM message of other equative routes generated through duplicating this LMM message, certainly, comprises the identification information of corresponding equative route in each LMM message.Those skilled in the art are concrete when realizing that transmitting terminal sends the LMM message, also can be through other mode, for example: control each outbound port and generate the LMM message under each port simultaneously, and in each LMM message, the identification information of corresponding equative route is set.To this, the embodiment of the invention is not done concrete qualification.
In addition; The concrete implementation that said receiving terminal is sorted out said LMM message is: said receiving terminal is according to the identification information of the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch; And with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch.
Through classification to the LMM message, can right area tell corresponding each detect batch in all LMM messages of sending of each port, thereby improve the accuracy rate of message packet loss detection.
When receiving terminal is accomplished the classification to the LMM message, and after confirming to have received all LMM messages of corresponding each outbound port in the current detection batch, send the LMR message to said transmitting terminal, this implementation procedure specifically comprises:
Transmitting counter numerical value when said receiving terminal sends corresponding LMM message with each said outbound port adds up the transmitting counter numerical value when receiving all LMM messages as said receiving terminal; And the count pick up device numerical value when each receiving port is received corresponding LMM message adds up the count pick up device numerical value when receiving all LMM messages as said receiving terminal;
Said receiving port is provided with the transmitting counter numerical value of the port in the corresponding LMM message of the port;
Said receiving terminal duplicates the said LMR message of respective number according to said equative route number;
By said receiving port said LMR message is sent to the outbound port of corresponding equative route respectively.
Pass through the embodiment of the invention; At receiving port in the LMR message that corresponding outbound port is replied; Transmitting counter numerical value and count pick up device numerical value through all LMM messages are corresponding add up, and make every LMR message can reflect count pick up device numerical value and the transmitting counter numerical value when the whole pseudo-line of representative receives all LMM messages in same detection batch.It is thus clear that, in the answer of LMR message, carried each counter values of whole pseudo-line, obtain the packet drop in the message transmission procedure thereby be convenient to transmitting terminal according to the LMR message.
When the LMR message transmissions to transmitting terminal; Transmitting terminal is sorted out the corresponding LMR message that each outbound port receives; Comprise: the identification information that belongs to identical answer batch according to the said LMR message of expression; Mark off the LMR message that belongs to same answer batch; Statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch, and with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages of each transmit port reception in the identical answer batch.
Through classification to the LMR message, can right area tell corresponding each reply batch in all LMR messages of sending of each port, thereby further improve the accuracy rate of message packet loss detection.
When outbound port receives the LMR message; The count pick up device numerical value of the port during at first through the corresponding LMR message of each outbound port recorder; And, all LMR messages are sorted out all LMR messages of each port transmission in right area is told corresponding this answers batch through transmitting terminal.Count pick up device numerical value when then, transmitting terminal receives corresponding LMR message with each outbound port adds up the local reception counter values when receiving all LMR messages as this transmitting terminal; And the transmitting counter numerical value when said transmitting terminal sends corresponding LMR message with each receiving port adds up, the transmitting counter numerical value when sending all LMR messages as said receiving terminal.
Usually, what message packet loss statistical method was directed against is certain the bar equative route in the pseudo-line, and its account form is:
The far-end number of dropped packets: | TxFCf [tc]-TxFCf [tp] |-| RxFCf [tc]-RxFCf [tp] |
The near-end number of dropped packets: | TxFCb [tc]-TxFCb [tp] |-| RxFCl [tc]-RxFCl [tp] |
Wherein, tc and tp subscript represent that respectively tc time point and adjacent tp time point receive the LMR message;
Local transmitting counter numerical value when TxFCf expresses port transmission LMM message;
Local reception counter values when RxFCf representes receiving port reception LMM message;
Local transmitting counter numerical value when TxFCb representes receiving port transmission LMR message;
Local reception counter values when RxFCl expresses port reception LMR message.
In the embodiment of the invention; Still adopt the aforementioned calculation formula; But with prior art different be that using the number of dropped packets that this formula calculates no longer is the number of dropped packets of corresponding wall scroll equative route, but the corresponding number of dropped packets that comprises the whole pseudo-line of many equative routes.This be because, in the embodiment of the invention, TxFCf is the transmitting counter numerical value accumulated value of each outbound port of transmitting terminal when sending corresponding LMM message; RxFCf is the count pick up device numerical value accumulated value of each receiving port of receiving terminal when receiving corresponding LMM message; TxFCb is the transmitting counter numerical value accumulated value of each receiving port of receiving terminal when sending corresponding LMR message; RxFCl is the count pick up device numerical value accumulated value of each outbound port of transmitting terminal when receiving corresponding LMM message; It is thus clear that the far-end number of dropped packets and the near-end number of dropped packets that obtain through the embodiment of the invention are whole pseudo-line far-end number of dropped packets and near-end number of dropped packets, thereby realize detection to the actual transmission message flow of pseudo-line.
In addition; For the ease of real-time detection to the actual transmission message flow of pseudo-line; Transmitting terminal can be set adopts periodic send mode to send the LMM message through each outbound port to each receiving port of receiving terminal; And reply corresponding LMR message according to the LMM message by each receiving port of receiving terminal, and the concrete LMM message cycle of sending can specifically be provided with according to practical application, and the embodiment of the invention is not done concrete qualification to this.
For the ease of to the making much of of embodiment of the invention technical scheme, be elaborated through the concrete implementation of an instantiation below to the embodiment of the invention
For convenience, be that example describes with a pseudo-line that possesses two equative routes simultaneously.As shown in Figure 2, be the structural representation of this puppet line.Wherein, Transmitting terminal is MEP1, and receiving terminal is MEP2, also comprises router P between MEP1 and the MEP2; Thereby; Article two, equative route is respectively MEP1-MEP2 and MEP1-P-MEP2, the outbound port 1 of the corresponding MEP1 of path MEP1-MEP2 difference and the receiving port 1 of MEP2, the outbound port 2 of the corresponding MEP1 of MEP1-P-MEP2 difference and the receiving port 2 of MEP2.
MEP1 duplicates (having several PW outbound ports just to duplicate several parts) with the LMM message based on the PW outbound port.In this example; Because MEP1 has two outbound ports, therefore, MEP1 will produce two parts of LMM messages; And fill the transmitting counter TxFCf1 and the TxFCf2 of port separately in the outbound port 1 and the transmitting counter territory of the LMM message of outbound port 2 transmissions respectively; Simultaneously, the identification information of genesis sequence in detecting under two parts of LMM messages of expression that receiving terminal can discern batch is set in two parts of LMM messages, and; Two parts of LMM messages of number and expression that expression generates the LMM message of same detection batch belong to the expression information of same detection batch together, so that MEP2 can identify all LMM messages of same detection batch.
Said various identification information can be set to preset extended field, and extended field can be set to character or character string according to presetting rule.The form of the LMM message behind the above-mentioned increase identification information is as shown in Figure 3.It is thus clear that; Before " end of a period TLV (0) " field in original LMM message; Increase the expansion content of two bytes; Be respectively: utilize first byte that the identification information of the said LMM message of expression ownership same detection batch is set, utilize the preceding 4bit of second byte that the identification information that expression generates the number of said LMM message is set, utilize the back 4bit of second byte that the identification information of the said genesis sequence of the said LMM message of expression is set.When specifically realizing this LMM message, for example, when producing two parts of LMM messages, then two parts of corresponding extended fields of LMM message are respectively (1,2,1) and (1,2,2).Certainly, the byte length of above-mentioned expression identification information can be expanded according to actual needs, has the more situation of the equal-cost link of more number simultaneously with the satisfied PW link of working as, and the embodiment of the invention is not done concrete qualification to this.
The processing procedure that MEP2 receives the LMM message is following:
The last receiving port of MEP2 receives the LMM message; Each receiving port is at first filled the count pick up device numerical value of corresponding receiving port in the RxFCf territory of this LMM message, according to the identification information of the said LMM message of the expression in LMM message ownership same detection batch the LMM message is sorted out again; After sort out accomplishing, MEP2 resolves in the current detection batch whether received all LMM messages (preceding 4bit and back 4bit extended field according to the 18th byte of LMM message draw); If then MEP2 adds up the transmitting counter numerical value (TxFCf1, TxFCf2) of all LMM messages, draws the numerical result after adding up, fill the TxFCf territory of LMR message; And the count pick up device numerical value (RxFCf1, RxFCf2) when each receiving port of MEP2 is received corresponding LMM message adds up, and draws the numerical result after adding up, and fills the RxFCf territory of LMR message; If also do not receive all LMM messages, the advanced row cache of the LMM message that then will receive.
Wherein, need to prove, judge whether that receiving all LMM method of message is: MEP2 is according to the identification information of the said LMM message of the expression of carrying in LMM message ownership same detection batch, distinguishes the LMM message that belongs to a certain detection batch; The identification information that generates the number of said LMM message according to the expression of carrying in the LMM message is again known duplicated altogether LMM message amount in a certain detection batch; Subsequently; Identification information according to genesis sequence under the said LMM message of the expression of carrying in the LMM message; Can know whether the LMM message that receives is all LMM messages that MEP1 sends; The LMM message that receives as MEP2 be MEP1 send all LMM messages the time, after the identification information of the genesis sequence of corresponding all LMM messages sorted in order, the genesis sequence that comes last a LMM message was identical with the numerical value of all LMM message amount.
When MEP2 receives all LMM messages that each outbound port of MEP1 sends, begin to send LMR message through each receiving port of MEP2:
MEP2 duplicates (having several PW receiving interfaces just to duplicate several parts) with the LMR message based on the PW receiving interface; Receiving interface is stamped the transmitting counter (TxFCb1, TxFCb2) of the port in the LMR message transmitting counter territory of sending separately; Simultaneously; The identification information of genesis sequence under two parts of LMR messages of expression that transmitting terminal can discern is set in two parts of LMR messages; And, represent that two parts of LMR messages belong to the expression information of same detection batch together, so that MEP1 can identify all LMR messages of same answer batch.In this instance, MEP2 produces two parts of LMR messages, and then two parts of corresponding extended fields of LMR message are respectively (1,2,1) and (1,2,2).The form that LMR message behind the identification information is set is as shown in Figure 4; It is thus clear that; Before " end of a period TLV (0) " field in original LMR message, increase the expansion content of two bytes, be respectively: utilize first byte that the identification information that the said LMR message of expression belongs to identical answer batch is set; Utilize the preceding 4bit of second byte that the identification information that expression generates the number of said LMR message is set; Utilize the back 4bit of second byte that the identification information of representing the affiliated genesis sequence of said LMR message is set, wherein, the number that generates said LMR message is equal to the number that generates said LMM message.
MEP1 receives that the processing procedure of LMR message is following:
The last outbound port of MEP1 receives the LMR message; Each outbound port is the numerical value (RxFCl1, RxFCl2) of the count pick up of the port during the corresponding LMR message of recorder at first, and the identification information that belongs to identical answer batch according to the said LMM message of the expression in the LMR message is again sorted out the LMM message; Sort out after the completion; MEP1 resolves whether received all LMR messages (extended field according to the preceding 4bit of the 18th byte of LMR message draws) in the current answer batch, and checks whether last LMR message (extended field according to the 18th byte of LMR message draws) in this batch of this LMR; If; Then MEP1 adds up the transmitting counter numerical value (TxFCb1, TxFCb2) of all LMR messages; Draw the local transmitting counter numerical value TxFCb of MEP1; And, the count pick up device numerical value (RxFCl1, RxFCl2) of all LMR messages is added up, draw the local reception counter values RxFCl of MEP1; If also do not receive all LMR messages, the advanced row cache of the LMR message that then will receive.According to the identification information that carries in the LMR message, judge whether to receive the determination methods of the described LMM message of all LMR method of message before, the embodiment of the invention is no longer given unnecessary details this.
The following account form of same employing:
The far-end number of dropped packets: | TxFCf [tc]-TxFCf [tp] |-| RxFCf [tc]-RxFCf [tp] |
The near-end number of dropped packets: | TxFCb [tc]-TxFCb [tp] |-| RxFCl [tc]-RxFCl [tp] |
Realization detects the actual transmission of whole pseudo-line message flow, thus obtain PW the message packet loss.
One of ordinary skill in the art will appreciate that; The all or part of step of realization said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Corresponding above-mentioned message packet loss detection method embodiment the embodiment of the invention discloses a kind of message packet loss detection system, and as shown in Figure 5, said system specifically comprises: pseudo-line transmitting terminal 50 and pseudo-line receiving terminal 51; Said pseudo-line comprises at least two equative routes,
Wherein, said transmitting terminal 50 comprises:
LMM message sending module 501 is used to send the LMM message, and said LMM message is corresponding one by one with said equative route, and said LMM message comprises first indication information of corresponding each bar equative route;
LMR message receiver module 502 is used to receive the LMR message that said receiving terminal sends;
LMR message processing module (MPM) 503, second indication information of corresponding said first indication information that is used for comprising according to said LMR message is sorted out said LMR message, obtains the message packet loss of said pseudo-line according to the counter values of said LMR message;
Said pseudo-line receiving terminal 51 comprises:
LMM message receiver module 511 is used to receive said LMM message;
LMM message processing module (MPM) 512 is used for according to said first indication information said LMM message being sorted out, and obtains individual count device numerical value required in the said LMR message;
The LMR message is replied module 513, is used for sending corresponding LMR message to said transmitting terminal, and said LMR message comprises said second indication information.
The embodiment of the invention is to the pseudo-line that possesses many equative routes simultaneously; Indication information through the corresponding equative route of difference in LMM message and the LMR message; LMM message and LMR message to transmitting on each bar link are sorted out, and construct LMM message and the entrained counter information of LMR message again, make that the counter of LMM message and LMR message not only can corresponding any equative route; And can corresponding whole pseudo-line; Thereby, can the actual transmission message flow of whole pseudo-line be detected, thereby obtain the message packet loss of pseudo-line.
Need to prove; In the embodiment of the invention, said first indication information comprises: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch; Then, corresponding said first indication information, said second indication information comprises:
Represent that respectively said LMR message belongs to identical answer batch, represent identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch.
Wherein, if detect batch identically, then the relevant LMM message of expression is promptly carrying out the same time transmission of message packet loss detection for sending simultaneously to pseudo-line; Reply batch identically, then the relevant LMR message of expression generates to same batch LMM message; Because the LMM message is sent by the separate port of pseudo-line sending and receiving end, visible, the number in the number homology equivalence path of LMM message and LMR message is identical; In addition, through the identification information of genesis sequence under the expression message, can know judge whether to generate same detection batch or reply batch in all messages of corresponding equative route.
Said various identification information can be set to preset extended field, and when concrete the realization, extended field can be set to character or character string according to presetting rule.
In the optimal technical scheme in embodiments of the present invention, said LMM message sending module can specifically comprise:
LMM message replicon module is used for detecting batch presetting, and according to said equative route number, duplicates the said LMM message of respective number;
Outbound port transmitting counter submodule, the outbound port of each equative route of correspondence that is used for being comprised by said transmitting terminal is provided with the transmitting counter numerical value of the port at corresponding LMM message;
First sends submodule, is used for by said outbound port the receiving port that LMM message behind the transmitting counter numerical value of the port is sent to each equative route of correspondence that said receiving terminal comprises being set.
Said LMM message processing module (MPM) can specifically comprise:
LMM message classification submodule; Be used for identification information according to the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch; And with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch;
Receiving port count pick up device submodule is used for being provided with at the LMM message that receives the count pick up device numerical value of the port;
The outbound port transmitting counter numerical value submodule that adds up is used for the transmitting counter numerical value that all LMM messages is corresponding and adds up, as the transmitting counter numerical value of said LMR message;
The outbound port count pick up device numerical value submodule that adds up is used for the count pick up device numerical value that all LMM messages is corresponding and adds up, as the count pick up device numerical value of said LMR message.
Pass through the embodiment of the invention; At receiving port in the LMR message that corresponding outbound port is replied; Transmitting counter numerical value and count pick up device numerical value through all LMM messages are corresponding add up, and make every LMR message can reflect count pick up device numerical value and the transmitting counter numerical value when the whole pseudo-line of representative receives all LMM messages in same detection batch.It is thus clear that, in the answer of LMR message, carried each counter values of whole pseudo-line, obtain the packet drop in the message transmission procedure thereby be convenient to transmitting terminal according to the LMR message.
Correspondingly, said LMR message processing module (MPM) comprises:
LMR message classification submodule; Be used for belonging to the identification information of identical answer batch according to the said LMR message of expression; Mark off the LMR message that belongs to same answer batch; Statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch; And with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages that each outbound port receives in the identical answer batch;
Outbound port count pick up device submodule is used for when receiving the LMR message, being provided with the count pick up device numerical value of the port;
The receiving port transmitting counter numerical value submodule that adds up is used for the transmitting counter numerical value that all LMR messages is corresponding and adds up the transmitting counter numerical value when sending all LMR messages as said receiving terminal;
The receiving port count pick up device numerical value submodule that adds up is used for the count pick up device numerical value that all LMR messages is corresponding and adds up the local reception counter values when receiving all LMR messages as transmitting terminal.
Said LMR message is replied module and can specifically be comprised:
LMR message replicon module is used for according to said equative route number, duplicates the said LMR message of respective number;
Second sends submodule, is used for by said receiving port said LMR message being sent to the outbound port of corresponding equative route.
It is thus clear that; Pass through the embodiment of the invention; At receiving port in the LMR message that corresponding outbound port is replied; Transmitting counter numerical value and count pick up device numerical value through all LMM messages are corresponding add up, and make every LMR message can reflect count pick up device numerical value and the transmitting counter numerical value when the whole pseudo-line of representative receives all LMM messages in same detection batch.It is thus clear that, in the answer of LMR message, carried each counter values of whole pseudo-line, obtain the packet drop in the message transmission procedure thereby be convenient to transmitting terminal according to the LMR message.
Usually, what message packet loss statistical method was directed against is certain the bar equative route in the pseudo-line, and its account form is:
The far-end number of dropped packets: | TxFCf [tc]-TxFCf [tp] |-| RxFCf [tc]-RxFCf [tp] |
The near-end number of dropped packets: | TxFCb [tc]-TxFCb [tp] |-| RxFCl [tc]-RxFCl [tp] |
Wherein, tc and tp subscript represent that respectively tc time point and adjacent tp time point receive the LMR message;
Local transmitting counter numerical value when TxFCf expresses port transmission LMM message;
Local reception counter values when RxFCf representes receiving port reception LMM message;
Local transmitting counter numerical value when TxFCb representes receiving port transmission LMR message;
Local reception counter values when RxFCl expresses port reception LMR message.
In the embodiment of the invention; Still adopt the aforementioned calculation formula; But with prior art different be that using the number of dropped packets that this formula calculates no longer is the number of dropped packets of corresponding wall scroll equative route, but the corresponding number of dropped packets that comprises the whole pseudo-line of many equative routes.This be because, in the embodiment of the invention, TxFCf is the transmitting counter numerical value accumulated value of each outbound port of transmitting terminal when sending corresponding LMM message; RxFCf is the count pick up device numerical value accumulated value of each receiving port of receiving terminal when receiving corresponding LMM message; TxFCb is the transmitting counter numerical value accumulated value of each receiving port of receiving terminal when sending corresponding LMR message; RxFCl is the count pick up device numerical value accumulated value of each outbound port of transmitting terminal when receiving corresponding LMM message; It is thus clear that the far-end number of dropped packets and the near-end number of dropped packets that obtain through the embodiment of the invention are whole pseudo-line far-end number of dropped packets and near-end number of dropped packets, thereby realize detection to the actual transmission message flow of pseudo-line.
In the another kind of message packet loss detection of embodiment of the invention system, as shown in Figure 6, said pseudo-line transmitting terminal 50 also comprises:
Cycle is provided with module 504, is used to be provided with the cycle that said outbound port sends said LMM message.
Through being set, pseudo-line transmitting terminal 50 adopt periodic send mode to send the LMM message to each receiving port of receiving terminal through each outbound port; And reply corresponding LMR message according to the LMM message, thereby be convenient to realize real-time detection to the actual transmission message flow of pseudo-line by each receiving port of receiving terminal.
Communication system among the invention described above embodiment can be passed through software, hardware or software and hardware combining and realize that the embodiment of the invention is not done concrete restriction to this.
For system embodiment, because it is basically corresponding to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.System embodiment described above only is schematic; Wherein said module as the separating component explanation can or can not be physically to separate also; The parts that show as module can be or can not be physical modules also; Promptly can be positioned at a place, perhaps also can be distributed on a plurality of mixed-media network modules mixed-medias.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the embodiment of the invention or scope in other embodiments among this paper.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a message packet loss detection method is characterized in that, said method comprises:
Pseudo-line transmitting terminal sends loss measurement message LMM message to pseudo-line receiving terminal; Wherein, Said pseudo-line comprises at least two equative routes; Said LMM message comprises first indication information of corresponding each bar equative route, and said first indication information comprises: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch;
Said pseudo-line transmitting terminal receives said pseudo-line receiving terminal said LMM message is sorted out the corresponding loss measurement answer LMR message that send the back; Said LMR message comprises second indication information of corresponding said first indication information; Said second indication information comprises: represent that respectively said LMR message belongs to identical answer batch; Expression generate identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch; Wherein said LMM message is sorted out and comprised: said pseudo-line receiving terminal is according to the identification information of the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch; And with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch;
Said pseudo-line transmitting terminal is sorted out said LMR message according to said second indication information; Obtain the message packet loss of said pseudo-line according to the counter values of said LMR message; Wherein said LMR message is sorted out and comprised: said pseudo-line transmitting terminal belongs to the identification information of identical answer batch according to the said LMR message of expression; Mark off the LMR message that belongs to same answer batch; Statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch; And with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages that each outbound port receives in the identical answer batch.
2. message packet loss detection method according to claim 1 is characterized in that, said pseudo-line transmitting terminal sends the LMM message and comprises:
Said pseudo-line transmitting terminal detects batch presetting, and according to said equative route number, duplicates the said LMM message of respective number;
The outbound port of each equative route of correspondence that is comprised by said pseudo-line transmitting terminal respectively is provided with the transmitting counter numerical value of the port in corresponding LMM message after, be sent to the receiving port of each equative route of correspondence that said pseudo-line receiving terminal comprises.
3. message packet loss detection method according to claim 1 is characterized in that, said pseudo-line receiving terminal sends the LMR message to said transmitting terminal and comprises:
Transmitting counter numerical value when said pseudo-line receiving terminal sends corresponding LMM message with each said outbound port adds up; Transmitting counter numerical value when receiving all LMM messages as said pseudo-line receiving terminal; Transmitting counter numerical value after adding up is filled the TxFCf territory of LMR message, and said TxFCf is the transmitting counter numerical value accumulated value of each outbound port of transmitting terminal when sending corresponding LMM message; And; Count pick up device numerical value when each receiving port is received corresponding LMM message adds up; Count pick up device numerical value when receiving all LMM messages as said pseudo-line receiving terminal; Count pick up device numerical value after adding up is filled the RxFCf territory of LMR message, and said RxFCf is the count pick up device numerical value accumulated value of each receiving port of receiving terminal when receiving corresponding LMM message;
Said receiving port is provided with the transmitting counter value TxFCb of the port in the transmitting counter territory of the LMR message that sends separately;
Said pseudo-line receiving terminal duplicates the said LMR message of respective number according to said equative route number;
By said receiving port said LMR message is sent to the outbound port of corresponding equative route respectively.
4. according to each described message packet loss detection method among the claim 1-3, it is characterized in that said pseudo-line outbound port adopts the periodicity send mode to send said LMM message.
5. a message packet loss detection system is characterized in that, comprising: pseudo-line transmitting terminal and pseudo-line receiving terminal; Said pseudo-line comprises at least two equative routes, and wherein, said pseudo-line transmitting terminal comprises:
LMM message sending module; Be used to send the LMM message; Said LMM message comprises first indication information of corresponding each bar equative route, and said first indication information comprises: represent respectively said LMM message ownership same detection batch, expression generate same detection batch the LMM message number and represent the identification information of genesis sequence under the LMM message of said same detection batch;
LMR message receiver module is used to receive the LMR message that said pseudo-line receiving terminal sends;
The LMR message processing module (MPM); Second indication information of corresponding said first indication information that is used for comprising according to said LMR message is sorted out said LMR message; Obtain the message packet loss of said pseudo-line according to the counter values of said LMR message; Said second indication information comprises: represent that respectively said LMR message belongs to identical answer batch; Expression generate identical answer batch the LMR message number and represent the identification information of genesis sequence under the LMR message of said identical answer batch; And said LMR message processing module (MPM) comprises: LMR message classification submodule; Said LMR message classification submodule is used for belonging to according to the said LMR message of expression the identification information of identical answer batch, marks off the LMR message that belongs to same answer batch, and statistics belongs to the identification information of genesis sequence under the said LMR message of expression that carries in each bar LMR message of same answer batch; And with each the bar LMR message that belongs to same answer batch in the expression of the carrying number that generates the LMR message of identical answer batch mate, to obtain all LMR messages that each outbound port receives in the identical answer batch;
Said pseudo-line receiving terminal comprises:
LMM message receiver module is used to receive said LMM message;
The LMM message processing module (MPM); Be used for according to said first indication information; Said LMM message is sorted out; Obtain individual count device numerical value required in the said LMR message, and said LMM message processing module (MPM) comprises: LMM message classification submodule, said LMM message classification submodule are used for the identification information according to the said LMM message of expression ownership same detection batch; Mark off the LMM message that belongs to same detection batch; Statistics belongs to the identification information of genesis sequence under the LMM message of the said same detection of expression of carrying in each bar LMM message of same detection batch batch, and with each the bar LMM message that belongs to same detection batch in the expression of the carrying number that generates the LMM message of same detection batch mate, to obtain all LMM messages that each outbound port sends in the same detection batch;
The LMR message is replied module, is used for sending corresponding LMR message to said pseudo-line transmitting terminal, and said LMR message comprises said second indication information.
6. message packet loss detection according to claim 5 system is characterized in that said LMM message sending module comprises:
LMM message replicon module is used for detecting batch presetting, and according to said equative route number, duplicates the said LMM message of respective number;
Outbound port transmitting counter submodule, the outbound port of each equative route of correspondence that is used for being comprised by said pseudo-line transmitting terminal is provided with the transmitting counter numerical value of the port at corresponding LMM message;
First sends submodule, is used for by said outbound port the receiving port that LMM message behind the transmitting counter numerical value of the port is sent to each equative route of correspondence that said pseudo-line receiving terminal comprises being set.
7. message packet loss detection according to claim 5 system is characterized in that said LMM message processing module (MPM) also comprises:
Receiving port count pick up device submodule is used for being provided with at the LMM message that receives the count pick up device numerical value of the port;
The outbound port transmitting counter numerical value submodule that adds up; Being used for the transmitting counter numerical value that all LMM messages is corresponding adds up; This accumulated value is used to fill the TxFCf territory of LMR message, and said TxFCf is the transmitting counter numerical value accumulated value of each outbound port of transmitting terminal when sending corresponding LMM message;
The outbound port count pick up device numerical value submodule that adds up; Being used for the count pick up device numerical value that all LMM messages is corresponding adds up; This accumulated value is used to fill the RxFCf territory of LMR message, and said RxFCf is the count pick up device numerical value accumulated value of each receiving port of receiving terminal when receiving corresponding LMM message.
8. message packet loss detection according to claim 5 system is characterized in that said LMR message processing module (MPM) also comprises:
Outbound port count pick up device submodule is used for when receiving the LMR message, being provided with the count pick up device numerical value RxFCl of the port;
The receiving port transmitting counter numerical value submodule that adds up; Being used for the transmitting counter numerical value TxFCb that all LMR messages is corresponding adds up; Transmitting counter numerical value when sending all LMR messages as said receiving terminal, said TxFCb are the local transmitting counter numerical value of each receiving port of receiving terminal when sending corresponding LMR message;
The receiving port count pick up device numerical value submodule that adds up is used for the count pick up device numerical value RxFCl that all LMR messages is corresponding and adds up the local reception counter values when receiving all LMR messages as transmitting terminal.
9. message packet loss detection according to claim 5 system is characterized in that, said LMR message is replied module and comprised:
LMR message replicon module is used for according to said equative route number, duplicates the said LMR message of respective number;
Second sends submodule, is used for by receiving port said LMR message being sent to the outbound port of corresponding equative route.
10. according to each described message packet loss detection system among the claim 5-9, it is characterized in that said pseudo-line transmitting terminal also comprises:
Cycle is provided with submodule, is used to set out the cycle that port sends said LMM message.
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| CN102217236A (en) * | 2011-05-10 | 2011-10-12 | 华为技术有限公司 | Method and device for detecting link loss ratio |
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| CN102916845B (en) * | 2011-08-01 | 2017-02-01 | 中兴通讯股份有限公司 | Multi-path loopback detecting method and exchanger equipment |
| CN102984018B (en) * | 2011-09-02 | 2015-08-05 | 华为技术有限公司 | Ethernet loss packet test method, equipment and system |
| CN102404166B (en) * | 2011-10-27 | 2015-04-08 | 华为技术有限公司 | Packet loss detecting method and system as well as transmitting equipment and receiving equipment |
| CN103259692A (en) * | 2012-02-15 | 2013-08-21 | 瑞典爱立信有限公司 | Loss measuring in link aggregation group |
| CN102684838B (en) * | 2012-05-23 | 2016-01-20 | 瑞斯康达科技发展股份有限公司 | A kind of LOF detection method, device and Maintenance Entity end points |
| CN103546303A (en) * | 2012-07-09 | 2014-01-29 | 中兴通讯股份有限公司 | Lost frame measuring method and system |
| CN104270284A (en) * | 2014-09-19 | 2015-01-07 | 烽火通信科技股份有限公司 | Service packet loss rate measuring method based on port or LSP in distributed architecture |
| CN104270285B (en) * | 2014-09-19 | 2017-08-01 | 烽火通信科技股份有限公司 | Business packet loss rate measurement method based on PW in distributed structure/architecture |
| WO2016049872A1 (en) * | 2014-09-30 | 2016-04-07 | 华为技术有限公司 | Device and method for measuring network packet loss |
| CN104579820B (en) * | 2014-12-05 | 2018-03-09 | 盛科网络（苏州）有限公司 | The test device and method of controllable MPLS TP label switched path packet loss |
| CN105991357A (en) * | 2015-02-06 | 2016-10-05 | 中兴通讯股份有限公司 | Packet loss determination processing and determining methods and packet loss determination processing and determining devices |
| CN106559325B (en) | 2015-09-25 | 2020-06-09 | 华为技术有限公司 | Path detection method and device |
| CN105357066B (en) * | 2015-10-09 | 2018-12-28 | 盛科网络（苏州）有限公司 | Remove the method and device of distal end statistical information automatically in packet loss rate measurement |
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| CN108600105B (en) * | 2018-03-15 | 2020-10-16 | 新华三技术有限公司 | Forwarding hardware resource allocation method and device and communication equipment |
| CN108833202B (en) * | 2018-05-22 | 2021-02-09 | 华为技术有限公司 | Method, device and computer readable storage medium for detecting fault link |
| CN116208524A (en) * | 2018-06-06 | 2023-06-02 | 华为技术有限公司 | Method, equipment and system for detecting data message |
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