CN101247287B - Fault detection method of operation management maintenance mechanism - Google Patents

Fault detection method of operation management maintenance mechanism Download PDF

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Publication number
CN101247287B
CN101247287B CN2008100840193A CN200810084019A CN101247287B CN 101247287 B CN101247287 B CN 101247287B CN 2008100840193 A CN2008100840193 A CN 2008100840193A CN 200810084019 A CN200810084019 A CN 200810084019A CN 101247287 B CN101247287 B CN 101247287B
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frame
management
source
maintain
maintenance
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CN101247287A (en
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李争齐
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a fault detection method for operation management maintenance mechanism, comprising: setting a timer at trail terminal and starting the timer when the trail terminal receives an operation management maintenance request frame sent by a source terminal; judging the operation management maintenance mechanism having fault when the trail terminal reaches, and if the trail terminal fails to receive other operation management maintenance mechanism request frame from the source terminal. The invention can detect multiple faults in the operation process of OAM mechanism effectively and inform users of the faults through alarm, so that users can definitely learn the validity of the operation result of OAM mechanism, thereby reducing the cost of operation, maintenance and management of equipments.

Description

The fault detection method of operation management maintenance mechanism
Technical field
The present invention relates to the ethernet communication field, and especially, relate to operation management maintain (Operation Administration and Maintenance, OAM) Ji Zhi fault detection method.
Background technology
From ITU-T Y.1731 the description of (" OAM functions and mechanisms for Ethernetbased networks ") as can be seen, OAM mechanism provides functions such as the monitoring, fault location, management information transmission of network performance, and, in some cases, OAM mechanism can replace expensive special test equipment, thereby saved the cost of use of network, made things convenient for the Network Management method.
Yet, also there is following problem in present OAM testing mechanism: stipulate according to agreement (1), frame for all OAM types, in datum plane, adopt forwarding in a like fashion with the user's data message, but, may cause the OAM frame also to be lost in transmission course because the networking may take place congestedly; (2) when some link of network takes place to interrupt, if the network startup defencive function then may cause the out of order of OAM frame or repeat to receive.
In present agreement, do not provide the detection method of this class fault and the processing method when breaking down, simultaneously, because OAM mechanism can partly replace meter specially to be used to test the conveying function (throughput at networking, time delay, packet loss etc.), therefore when enabling this part OAM(Operation Administration Maintenance) and carry out network performance measurement, if the networking sends fault, the result of test will be insecure.
Therefore, the scheme that the authenticity of test result clearly can be notified to the user is necessary, yet proposing as yet at present can carrying out fault detect and notifying user's technical scheme OAM itself.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of failure detection schemes of operation management maintenance mechanism, to solve the problem that can't realize OAM fault detect and notice in the correlation technique.
According to embodiments of the invention, a kind of fault detection method of operation management maintenance mechanism is provided, be used for the operation management maintenance mechanism of irrevocable formula is carried out fault detect.
This method comprises: end is provided with timer in the place, when the place termination is received the operation management maintain claim frame of source end transmission, starts timer; When timer arrived, if the place end does not also receive other operation management maintain claim frame from the source end, then decision operation management maintenance mechanism broke down.
Wherein, receive that in the place termination further comprise: the source end carries unique identification in each operation management maintain claim frame of its transmission before the operation management maintain claim frame of source end transmission; Source end transmit operation management maintenance claim frame.
And the sign of operation management maintain claim frame is bigger by 1 than the sign of the claim frame of operation management maintain formerly that source end sent before the operation management maintain claim frame.
After the place termination is received the operation management maintain claim frame of source end transmission, further comprise: the sign of the last action management maintenance the claim frame whether sign of place end decision operation management maintenance claim frame is received than place termination is big by 1, and, determine that operation management maintenance mechanism breaks down being judged as under the situation not.
According to another embodiment of the present invention, provide a kind of fault detection method of operation management maintenance mechanism, be used for recoverable operation management maintenance mechanism is carried out fault detect.
This method comprises: end is provided with timer in the source; The source end is to place end transmit operation management maintenance claim frame, and starts timer, and the source end does not receive that decision operation management maintenance mechanism breaks down under Su Duan and situation operation management maintain claim frame corresponding response frame when timer arrives; Perhaps, the source end is to place end transmit operation management maintenance claim frame, and when the operation management maintain response frame that receives from Su Duan, start timer, do not receive when timer arrives under the situation from other operation management maintain response frame of Su Duan, decision operation management maintenance mechanism breaks down.
Wherein, receive that in the place termination further comprise: the source end carries unique identification in each operation management maintain claim frame of its transmission before the operation management maintain claim frame of source end transmission; Source end transmit operation management maintenance claim frame.
And the sign of operation management maintain claim frame is bigger by 1 than the sign of the claim frame of operation management maintain formerly that source end sent before the operation management maintain claim frame.
After the place termination is received the operation management maintain claim frame of source end transmission, further comprise: the sign of the last action management maintenance the claim frame whether sign of place end decision operation management maintenance claim frame is received than place termination is big by 1, and, determine that operation management maintenance mechanism breaks down being judged as under the situation not.
In addition, the operation management maintain response frame that returns of Su Duan has identical sign with the pairing operation management maintain claim frame of this operation management maintain response frame.
Wherein, when source end transmit operation management maintenance claim frame, the source end is stored in the sign of the operation management maintain claim frame of transmission in the predetermined set; After the source termination is received the operation management maintain response frame, judge whether the sign of the operation management maintain response frame of this reception is present in the predetermined set, being judged as under the situation not, determine that operation management maintenance mechanism breaks down.
By technique scheme of the present invention, can effectively detect in the OAM mechanism running various faults and, and can give the user with these signalling troubles by alarm, make the user clearly know the validity of OAM mechanism operation result, thereby reduced operation, maintenance, and the management costs of equipment.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the fault detection method of the operation management maintenance mechanism of the inventive method embodiment one;
Fig. 2 is the flow chart according to the fault detection method of the operation management maintenance mechanism of the inventive method embodiment two; And
Fig. 3 is a schematic diagram of realizing that the device according to the fault detection method of the operation management maintenance mechanism of the embodiment of the invention carries out the OAM fault detect.
Embodiment
Usually, the OAM operating mechanism of Ethernet can be divided into two classes usually, and class right and wrong are recoverable, and another kind of is recoverable.Wherein, in irrevocable formula, the source end initiatively sends the OAM frame, and Su Duan only receives the OAM frame; In recoverable, the source end initiatively sends the OAM claim frame, after the place termination is received the OAM claim frame, feeds back an OAM response frame to the source end, and after the source termination was received response frame, one time feedback procedure finished.The present invention is directed to this OAM mechanism of two types has proposed for the failure detection schemes of OAM mechanism own.In the following description, the OAM frame that the source end is sent is referred to as the OAM claim frame, and the OAM frame that the place end sends is referred to as the OAM response frame.
Method embodiment one
In the present embodiment, provide a kind of fault detection method of operation management maintenance mechanism, be used for the operation management maintenance mechanism of irrevocable formula is carried out fault detect.
As shown in Figure 1, comprise according to the fault detection method of the operation management maintenance mechanism of present embodiment: step S102, end is provided with timer in the place, when the place termination is received the operation management maintain claim frame that the source end sends, starts timer; Step S104, when timer arrived, if the place end does not also receive other operation management maintain claim frame from the source end, then decision operation management maintenance mechanism broke down.
Particularly, can a timer and a thresholding be set at the place end, the startup timing of just starting from scratch of OAM claim frame of every reception, timer after if timer reaches thresholding, is not also received the OAM claim frame, then judges and breaks down.Thereby effectively realized the purpose that frame timeout detects.Preferably, under situation about breaking down, can produce an OAM claim frame to carry out overtime alarm.
In addition, receive that in the place termination further comprise: the source end carries unique identification in each operation management maintain claim frame of its transmission before the operation management maintain claim frame of source end transmission; Source end transmit operation management maintenance claim frame.
And the sign of operation management maintain claim frame is bigger by 1 than the sign of the claim frame of operation management maintain formerly that source end sent before the operation management maintain claim frame.
After the place termination is received the operation management maintain claim frame of source end transmission at every turn, further comprise: the sign of the last action management maintenance the claim frame whether sign of place end decision operation management maintenance claim frame is received than place termination is big by 1, if the judgment is Yes, think that then OAM mechanism is normal, being judged as under the situation not, determine that operation management maintenance mechanism breaks down.Thereby effectively realized the purpose of the discontinuous fault detect of OAM claim frame.
And, under the situation of determining to break down, can produce an OAM claim frame to carry out discontinuous alarm.
Although only adding 1 with sequence number here is the setting up procedure that example has illustrated sequence number, it will be appreciated by those skilled in the art that and to adopt other method that sequence number is set.
Method embodiment two
In the present embodiment, provide a kind of fault detection method of operation management maintenance mechanism, be used for recoverable operation management maintenance mechanism is carried out fault detect.
As shown in Figure 2, comprise according to the fault detection method of the operation management maintenance mechanism of present embodiment: step S202, end is provided with timer in the source; Step S204, the source end is to place end transmit operation management maintenance claim frame, and the startup timer, the source end does not receive that decision operation management maintenance mechanism breaks down under Su Duan and situation operation management maintain claim frame corresponding response frame when timer arrives; Perhaps, step S206, the source end is to place end transmit operation management maintenance claim frame, and when the operation management maintain response frame that receives from Su Duan, start timer, do not receive when timer arrives under the situation from other operation management maintain response frame of Su Duan, decision operation management maintenance mechanism breaks down.
That is to say, for recoverable OAM, can a timer and a thresholding be set the source end, specifically can adopt following dual mode to carry out fault detect: method 1, the startup timing of just starting from scratch of OAM claim frame of every transmission, timer is after if timer reaches thresholding, also do not receive the OAM response frame corresponding, then produce an overtime alarm of OAM with this OAM claim frame; The startup timing of just starting from scratch of method 2, OAM response frame of every reception, timer after if timer reaches thresholding, is not also received the OAM response frame, then produces an overtime alarm of OAM.
Wherein, receive that in the place termination further comprise: the source end carries unique identification in each operation management maintain claim frame of its transmission before the operation management maintain claim frame of source end transmission; Source end transmit operation management maintenance claim frame.
And the sign of operation management maintain claim frame is bigger by 1 than the sign of the claim frame of operation management maintain formerly that source end sent before the operation management maintain claim frame.
After the place termination is received the operation management maintain claim frame of source end transmission, further comprise: the sign of the last action management maintenance the claim frame whether sign of place end decision operation management maintenance claim frame is received than place termination is big by 1, and, determine that operation management maintenance mechanism breaks down being judged as under the situation not.
In addition, the operation management maintain response frame that returns of Su Duan has identical sign with the pairing operation management maintain claim frame of this operation management maintain response frame.
Wherein, when source end transmit operation management maintenance claim frame, the source end is stored in the sign of the operation management maintain claim frame of transmission in the predetermined set; After the source termination is received the operation management maintain response frame, judge whether the sign of the operation management maintain response frame of this reception is present in the predetermined set, being judged as under the situation not, determine that operation management maintenance mechanism breaks down.
Wherein, the OAM claim frame for the source end sends carries sign by each frame payload inside, also can be sequence number, and this sequence number can be distributed by the sequence number generator.
When realizing above-mentioned two embodiment of the present invention, need in the OAM request message, carry sign (sequence number), ITU-T Y.1731 in the definition the OAM frame structure in, part of O AM frame structure carries this sequence number, but for following several classes, for example, ETH-AIS, ETH-LCK, ETH-APS, ETH-MCC, ETH-LMM, ETH-LMR, ETH-1DM, ETH-DMM, ETH-DMR, ETH-EXM, ETH-EXR, ETH-VSM, ETH-VSR frame structure, the field that needs to increase a Transmit ID/SequenceID is carried sign (sequence number);
For ETH-AIS, ETH-LCK, ETH-APS, ETH-MCC, ETH-LMM, ETH-1DM, ETH-DMM, ETH-EXM, ETH-VSM, can be with the field called after Transmit ID that increases, for ETH-LMR, ETH-DMR, ETH-EXR, ETH-VSR can be with the field called after Sequence ID that increases.
Concrete implementation method can be in frame structure original End TLV to be fixed as 0, changes to and is fixed as 4, and increase the field TransmitID/Sequence ID of a nybble behind End TLV.Table 1 has illustrated the structure before and after the above-mentioned message alteration in 26.
When reality realizes, need be provided with lower device at the source end:
(1) OAM claim frame generator:, when needs send the OAM claim frame,, this sequence number is filled among the Transmit ID sends just from sequence number of OAM claim frame sequencer acquisition according to configuration;
(2) OAM claim frame sequence number generator: OAM claim frame generator whenever sends an OAM claim frame, just current sequence number is added 1, and this sequence number is recorded in gathers among the P (that is, above-mentioned predetermined set);
(3) the overtime alarm device of OAM: a timer is arranged in this device, OAM response frame of every reception, then timer picks up counting from 0, if after timer reaches thresholding, does not also receive the OAM response frame, then produces an overtime alarm of OAM
(4) the discontinuous alarm device of OAM response frame: whether the Sequence ID in two OAM response frames that this device is always received more continuously is continuous, if discontinuous alarm of discontinuous generation
(5) OAM operational failure alarm: whether the Sequence ID in the OAM response frame that this device is always relatively received belongs to set P, if do not belong to, produces the alarm of OAM operational failure.
Need be provided with lower device at the place end:
(1) OAM claim frame receiver: be used to receive the OAM claim frame, and extract Transmit id field wherein;
(2) the discontinuous alarm of OAM claim frame: whether the Transmit ID that is used for detecting continuous two OAM claim frames of receiving is continuous, if discontinuous, produces the discontinuous alarm of OAM claim frame;
(3) OAM response frame transmitter: whenever receive an OAM claim frame, then trigger the transmission of an OAM response frame, and the Transmit ID in the current OAM claim frame is copied among the Sequence ID of response frame.
When carrying out the fault detect of OAM, it is handled as shown in Figure 3, no longer repeats here.
In sum, by means of technical scheme of the present invention, can effectively detect in the OAM mechanism running various faults and, and can give the user with these signalling troubles by alarm, make the user clearly know the validity of OAM mechanism operation result, thereby reduced operation, maintenance, and the management costs of equipment.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. the fault detection method of an operation management maintenance mechanism is used for the operation management maintenance mechanism of irrevocable formula is carried out fault detect, it is characterized in that described method comprises:
The source end carries unique identification in each operation management maintain claim frame of its transmission, described source end sends described operation management maintain claim frame, wherein, the sign of the claim frame of operation management maintain formerly that sent before described operation management maintain claim frame than described source end of the sign of described operation management maintain claim frame is big by 1;
End is provided with timer in the place, when the described operation management maintain claim frame that described place termination receives that described source end sends, starts described timer;
When described timer arrived, if described place end does not also receive other the described operation management maintain claim frame from described source end, then decision operation management maintenance mechanism broke down; If described place termination is received the described operation management maintain claim frame that described source end sends, the sign of the last action management maintenance the claim frame whether sign that described place end is judged described operation management maintain claim frame is received than described place termination is big by 1, and, determine that described operation management maintenance mechanism breaks down being judged as under the situation not.
2. the fault detection method of an operation management maintenance mechanism is used for recoverable operation management maintenance mechanism is carried out fault detect, it is characterized in that described method comprises:
End is provided with timer in the source;
Described source end carries unique identification in each operation management maintain claim frame of its transmission; The sign of described operation management maintain claim frame is bigger by 1 than the sign of the claim frame of operation management maintain formerly that described source end sent before described operation management maintain claim frame;
Described source end is to place end transmit operation management maintenance claim frame, and startup timer, described source end does not receive that decision operation management maintenance mechanism breaks down under described Su Duan and the situation described operation management maintain claim frame corresponding response frame when described timer arrives; Perhaps,
Described source end is to place end transmit operation management maintenance claim frame, and when the operation management maintain response frame that receives from described Su Duan, start described timer, do not receive when described timer arrives under the situation from other operation management maintain response frame of described Su Duan, decision operation management maintenance mechanism breaks down;
After described place termination is received the described operation management maintain claim frame of described source end transmission, the sign of the last action management maintenance the claim frame whether sign that described place end is judged described operation management maintain claim frame is received than described place termination is big by 1, and, determine that described operation management maintenance mechanism breaks down being judged as under the situation not.
3. method according to claim 2 is characterized in that, the described operation management maintain response frame that described Su Duan returns has identical sign with the pairing operation management maintain claim frame of this operation management maintain response frame.
4. method according to claim 3 is characterized in that,
When described source end sent described operation management maintain claim frame, the sign of the described operation management maintain claim frame that described source end will send was stored in the predetermined set;
After described source termination is received the operation management maintain response frame, judge whether the sign of the operation management maintain response frame of this reception is present in the described predetermined set, being judged as under the situation not, determine that described operation management maintenance mechanism breaks down.
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CN107809336B (en) * 2017-11-16 2019-10-25 中国联合网络通信集团有限公司 A kind of fault detection method, the device of IP RAN network

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Publication number Priority date Publication date Assignee Title
CN1713596A (en) * 2004-06-15 2005-12-28 中兴通讯股份有限公司 Link detection for realizing multi-link agreement
CN1838620A (en) * 2005-03-25 2006-09-27 华为技术有限公司 Method for detecting chain circuit fault between end-to-end notes in mixed network
CN1905483A (en) * 2006-08-08 2007-01-31 华为技术有限公司 Method and apparatus for testing ethernet connection damage
CN101119245A (en) * 2007-08-31 2008-02-06 杭州华三通信技术有限公司 Method and device for performing link monitoring using OAM protocol

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1713596A (en) * 2004-06-15 2005-12-28 中兴通讯股份有限公司 Link detection for realizing multi-link agreement
CN1838620A (en) * 2005-03-25 2006-09-27 华为技术有限公司 Method for detecting chain circuit fault between end-to-end notes in mixed network
CN1905483A (en) * 2006-08-08 2007-01-31 华为技术有限公司 Method and apparatus for testing ethernet connection damage
CN101119245A (en) * 2007-08-31 2008-02-06 杭州华三通信技术有限公司 Method and device for performing link monitoring using OAM protocol

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