CN1913453A - Method and device for quickly fault detection from point-to-point - Google Patents
Method and device for quickly fault detection from point-to-point Download PDFInfo
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Abstract
This invention provides a quick fault testing method of point to point and a device, in which, the method includes: after terminal points of both ends of the point-to point protocol link finish a discovery process, they send and receive test messages mutually in terms of the time interval designed by a user, the end point tests fault of the opposite end point based on the reception of the test message. The device includes: end points of a point to point protocol link used in mutually transmitting and receiving test messages in terms of selected time interval and testing faults of the opposite point based on the reception of the tested message so as to find out faults of link end points of the point to point protocol quickly.
Description
Technical field
The present invention relates to network communication protocol, relate in particular to a kind of method and apparatus of realizing the quick fault testing of point-to-point.
Background technology
Ethernet technology owing to have is simple and easy to can improve constantly with, cheap and bandwidth, and therefore, Ethernet has obtained extensive use as a kind of business or network configuration in enterprise network, metropolitan area network, wide area network scope.But traditional ethernet also has the characteristics that can safeguard, can run ability, and the scope of promoting along with Ethernet enlarges gradually, and is also more and more stronger to the demand of Ethernet OAM (Operations, Administration and Maintenance) function.
Ethernet OAM function can be divided into the two large divisions: fault management and performance management.Wherein how in fault the back taking place and find fault fast, realize safeguard measure as soon as possible, to reduce the service disconnection loss, is the crucial factor that all operators and Network Provider improve service quality.
The scheme that a lot of Ethernet fault managements have been arranged at present; realize the detection of connectivity of network end-to-end as the 802.1ag agreement; 802.3ah the fault of agreement realization point-to-point is notified, RRPP (ethernet ring network is protected agreement fast) agreement realizes fault management of ethernet ring network or the like.
But, above-mentioned 802.1ag protocol configuration complexity, and dispose the link of the very difficult whole C E of covering (customer edge) to CE.Above-mentioned 802.3ah agreement, RRPP agreement belong to slow protocol, can't satisfy whole user link is carried out quick malfunction monitoring, the telecommunications requirements that protection is in time switched.
802.3ah agreement is link layer Ethernet OAM(Operation Administration Maintenance) and realizes agreement, is positioned at the link layer of protocol stack.The OAM layer belongs to data link layer in OSI (Open System Interconnection) model, be positioned in the Ethernet model between MAC (medium access control) sublayer and LLC (logic link control) sublayer, realizes the management to different 802.3 physical layers.802.3ah agreement is a kind of OAM of point-to-point, its major function comprises: OAM ability discovery, OAM link monitoring, far-end signalling trouble, OAM remote loopback, far-end MIB obtain (inband network management) etc.
The OAM ability discovery is meant to be found to support the equipment of OAM and detect it to the OAM tenability, can finish by sending out message mutually.The message of sending out can comprise mutually: OAM configuration information, OAM pattern information and OAMPDU (protocol Data Unit) information.
The OAM configuration information is an OAM correlation energy force information, as whether responding the request of MIB (management information bank) variable, whether supports information such as loop fuction.
The OAM pattern information is meant the pattern of 802.3ah protocol entity, and the pattern of 802.3ah protocol entity is divided into aggressive mode or Passive Mode, and the message of different mode reception/transmission is different, and the OAM capability discovery process is generally initiated by aggressive mode one side.
The OAMPDU information spinner will comprise the maximum OAMPDU length of equipment reception/transmission, adopts minimum length before consulting; Platform ID, it can be used for doing priority ratio, comprise a unique OUI (Organization Unique Identifier, organize unique identification) and the self-defined information of a 32bit, IEEE (Electrical and Electronic engineering association) distributes the value of OUI, and the value of OUI can also be first three byte of MAC Address.
The OAM link monitoring is meant that by sending event notification message to the opposite end notify the fault of finding under the various situations in opposite end, the failure notification event of standard comprises: rub-out signal cycle, erroneous frame, cycle mistake frame number and erroneous frame number second.
When the far-end signalling trouble is meant device fails, sends unidirectional OAM message to the opposite end and notify the opposite end, the fault type of the said equipment comprises: link failure, critical failure, emergency.Specific implementation should send a notification message to the opposite end by the flag territory among the OAMPDU for when owing to equipment fault or unavailable when causing flow interrupt.
The OAM remote loopback is to point to opposite end transmission message informing far-end to enter wrapped state, with the loopback test link.Be specially local OAM entity and make it enter wrapped state to far-end transmission loopback message, other message all will be returned by opposite end OAM layer former state except that the OAMPDU message this moment.
Far-end MIB obtain function be meant by with the opposite equip. interactive information, directly obtain the mib information of opposite equip..
The method of the fault detect of a kind of 802.3ah agreement of prior art is: the Information message that the both link ends end points of 802.3ah agreement carries the OAM configuration information by mutual transmission is realized the discovery process, finishes negotiation.Then, the two ends end points regularly sends information OAMPDU message mutually, information OAMPDU content of message mainly comprises both sides' OAM version, state, OAM and OAM configuration informations such as OAMPDU configuration, OUI and supplier information except general OAMPDU structure.
Regulation according to the 802.3ah agreement, the fixed time interval that sends information OAMPDU message is 1 second, if an end end points was not received the effective informationOAMPDU message from the opposite end end points in 5 seconds, think that then the opposite end end points breaks down or link failure, to initiate the discovery process again, and attempt setting up the OAM testing mechanism with the opposite end end points once more.
In order to prevent the situation of link single-pass, in the information OAMPDU message flag territory is arranged, this territory has a bit (bit) to be used for identifying the information OAMPDU message whether a port can receive effective and local terminal configurations match from the opposite end.Under the situation of single-pass, receive that the port of the information OAMPDU message that has this sign also needs to withdraw from detected state, initiate the discovery process again.
Above-mentioned Information message and information OAMPDU message all send and receive by software.
The shortcoming of the method for above-mentioned prior art is:
1, breaks down from end points and cause can not receive Information OAMPDU message, thereby the fault of detecting, and the time interval of restarting between the discovery process reached for 5 seconds, for the Operation Network that requires high reliability, second the level service disconnection be very big accident.If 802.3ah and 802.1ag carry out the binding of alarm function, the switching reliability and will be confined to the 802.3ah agreement of whole net.
2, the both link ends end points of 802.3ah agreement is at first realized the discovery process by the Information message that OAM information is carried in transmission, finish negotiation, in case consult to pass through, these OAM information should not can before restarting the discovery process change, and arbitrary end OAM information changes all can impel 802.3ah to carry out the discovery process again.Therefore, in this method, the both sides' that carry in the Information OAMPDU message of negotiation by the back timed sending OAM information is redundant information, increased the length of Information OAMPDU message, thereby increased the difficulty that hardware sends Information OAMPDU message fast, influenced network bandwidth efficient.
3, the 802.3ah agreement can only be monitored link by the Information OAMPDU message of regularly shaking hands; owing to can't distinguish is that configuration change causes (enabling as cancellation 802.3ah agreement) link failure; or true link failure; just all get back to the discovery stage, can not take the corresponding protection action according to different situations.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of method and apparatus of realizing the quick fault testing of point-to-point, thereby can find the fault of the link end points of peer-peer protocol (such as the 802.3ah agreement) apace.
The objective of the invention is to be achieved through the following technical solutions:
A kind of method that realizes the quick fault testing of point-to-point comprises step:
The two ends end points of A, peer-peer protocol link is after finishing discovery procedure, according to mutual the transmission and the reception detection messages of the time interval of selecting;
The end points of B, described peer-peer protocol link detects the fault of opposite end end points according to the reception condition of described detection messages.
Described steps A specifically comprises:
The two ends end points of peer-peer protocol link is after finishing discovery procedure, according to the detection messages that the time interval sends mutually and the Operations, Administration and Maintenance OAM configuration information of both sides' end points is not carried in reception of user's setting.
Described steps A specifically comprises:
The two ends end points of peer-peer protocol link sends and receives described detection messages mutually by hardware.
The time interval that described user sets comprises: 10ms or 100ms or 1s.
Described step B specifically comprises:
The end points of described peer-peer protocol link is not received the described detection messages that the opposite end end points sends in the time of setting, determine that then fault has taken place described opposite end end points.
Described step B also comprises:
The end points of described peer-peer protocol link sends the fixed format message that sets in advance to the opposite end end points after its OAM configuration information changes, notice opposite end end points restarts to carry out discovery procedure; And the two ends end points stops to send described detection messages.
Described peer-peer protocol comprises: the 802.3ah agreement.
A kind of device of realizing the quick fault testing of point-to-point comprises:
Peer-peer protocol link end points: be used for after finishing discovery procedure, according to mutual the transmission and the reception detection messages of the time interval of selecting; And detect the fault of opposite end end points according to the reception condition of described detection messages.
Described peer-peer protocol link end points specifically comprises:
The time interval is selected module: be used to select to send and receive the time interval of detection messages, and the time interval of selecting is passed to detection messages transmission and receiver module;
Detection messages sends and receiver module; Be used for the time interval information of selecting module to pass over according to the time interval, send and receive detection messages to the opposite end end points by hardware;
Fault detection module: be used for sending and the reception condition of the described detection messages that receiver module receives, detect the fault of opposite end end points according to detection messages.
Described peer-peer protocol link end points also comprises:
The fixed format message sending module: be used for after the OAM of described peer-peer protocol link end points configuration information changes, send the fixed format message that sets in advance to the opposite end end points, notice opposite end end points restarts to carry out discovery procedure; And the two ends end points stops to send described detection messages.
As seen from the above technical solution provided by the invention, the present invention reduces the timed sending interval of detection messages by shortening the length of detection messages, sends and receive this detection messages by hardware.Thereby can find the fault of the link end points of peer-peer protocol (such as the 802.3ah agreement) apace, the time of finding the end points fault was reduced within the 50ms from original 5 seconds.The present invention can improve network performance, and conserve bandwidth reduces difficulty and the cost realized.
The present invention is one type OAMPDU message by increasing newly also, when at one end carrying out the change of any OAM relevant configuration, can notify the opposite end by this message, makes both link ends reenter the discovery stage.
Description of drawings
Fig. 1 is the concrete process chart of the embodiment of the method for the invention;
Fig. 2 is the existing OAMPDU message format of a 802.3ah agreement schematic diagram;
Fig. 3 is the concrete structure figure of embodiment of device of the quick fault testing of realization point-to-point of the present invention.
Embodiment
The invention provides a kind of method and apparatus of realizing the quick fault testing of point-to-point, core of the present invention is: shorten the length of detection messages, reduce the timed sending interval of detection messages, send and receive this detection messages by hardware
Describe the present invention in detail below in conjunction with accompanying drawing, the method for the invention is applicable to the detection protocol of point-to-point, is example with the 802.3ah agreement, and the concrete handling process of the embodiment of the method for the invention comprises the steps: as shown in Figure 1
The both link ends end points of step 1-1,802.3ah agreement is finished the discovery process by software.
The both link ends end points of operation 802.3ah agreement is at first finished at a slow speed discovery process by CPU software.In this discovery process, the Information message that the both link ends end points carries the OAM configuration information by mutual transmission is held consultation, in case after consulting to pass through, the both link ends end points has just been finished the discovery process.And the OAM configuration information of above-mentioned both link ends end points can not change before restarting the discovery process.
The both link ends end points of step 1-2,802.3ah agreement has mutually sent the timing detection messages of length brief by hardware, comes the test side point failure.
802.3ah the both link ends end points of agreement is through after consulting to have finished the discovery process, the both link ends end points has just regularly sent the detection messages of length mutually brief by hardware, comes the test side point failure.Above-mentioned detection messages is generally Information OAMPDU message.
The present invention need improve the 802.3ah agreement, is set the timed sending time interval of InformationOAMPDU message by the user.
The present invention has shortened the transmission time interval of Information OAMPDU message, consider that general operator requires to realize in the 50ms switching, and mate with the 802.1ag agreement, the transmission time interval of InformationOAMPDU message is traditionally arranged to be 10ms, after an end of link is not received the Information OAMPDU message of opposite end transmission 3.5 cycles, think that then the opposite end breaks down, so, by the flag field notice opposite end in the Information OAMPDU message.Then, both link ends is return the discovery state, carries out the discovery process again.
In the present invention, no longer carry both sides' redundant informations such as OAM configuration information in the above-mentioned Information OAMPDU message, thereby the brief length of Information OAMPDU message can make the both link ends end points send and receive above-mentioned Information OAMPDU message by hardware.Do not rely on the application state of the main frame of two ends end points.
The present invention is set to 10ms by the transmission time interval of OAMPDU message, can make to detect link end points and the time restriction of fault has taken place in 50ms.In actual applications, the transmission time interval of InformationOAMPDU message can also be 100ms and 1s etc., both can compatible primary standard agreement, can select to carry out fault discovery fast again.
802.3ah the existing OAMPDU message format of agreement schematic diagram as shown in Figure 2.For realizing the fast detecting fault, the present invention has also increased by one type OAMPDU type of message (05 type), and the form of the OAMPDU type of message of this increase is shown in following table 1.
Table 1: the form signal table of one type the OAMPDU message that the present invention increases
| 05 | Rediscovery Notification | Notify?partner?to?re-enter discovery | OAM?client |
One type the OAMPDU message that the invention described above increases is specifically designed to the occasion that requires to restart to carry out the discovery process after link one end end points has been revised the OAM parameter.During link detecting, if an end end points has been changed the OAM configuration, as cancel OAM(Operation Administration Maintenance), change and to shake hands the cycle etc., the host software of this end points will initiatively be constructed the Rediscovery Notification OAMPDU of above-mentioned 05 type, send to the opposite end end points continuously, impel the two ends end points to return to the discovery stage simultaneously.Simultaneously, the hardware of two ends end points stops to send and receiving the Information OAMPDU message that above-mentioned timing detects usefulness.
802.3ah agreement after the improvement of the present invention can be mated with the 802.1ag agreement.Operation 802.3ah agreement between uncontrollable CE equipment of operator and PE (operator edge) equipment; operation 802.1ag agreement between PE and the far-end PE; 802.3ah agreement and 802.1ag agreement are carried out the binding of alarm function; just can realize the fault discovery and the announcement of service link apace, thereby switch with the professional protection of prestissimo realization.
The concrete structure of the embodiment of the device of the quick fault testing of realization point-to-point of the present invention comprises as shown in Figure 3:
Peer-peer protocol link end points: be used for after finishing discovery procedure, according to mutual the transmission and the reception detection messages of the time interval of selecting; And detect the fault of opposite end end points according to the reception condition of described detection messages.
Described peer-peer protocol link end points specifically comprises:
The time interval is selected module: be used to select to send and receive the time interval of detection messages, and the time interval of selecting is passed to detection messages transmission and receiver module;
Detection messages sends and receiver module; Be used for the time interval information of selecting module to pass over according to the time interval, send and receive detection messages to the opposite end end points by hardware;
Fault detection module: be used for sending and the reception condition of the described detection messages that receiver module receives, detect the fault of opposite end end points according to detection messages.
The fixed format message sending module: be used for after the OAM of described peer-peer protocol link end points configuration information changes, send the fixed format message that sets in advance to the opposite end end points, notice opposite end end points restarts to carry out discovery procedure; And the two ends end points stops to send described detection messages.
Peer-peer protocol in the device of the quick fault testing of the described realization point-to-point of the invention described above comprises: the 802.3ah agreement.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of method that realizes the quick fault testing of point-to-point is characterized in that, comprises step:
The two ends end points of A, peer-peer protocol link is after finishing discovery procedure, according to mutual the transmission and the reception detection messages of the time interval of selecting;
The end points of B, described peer-peer protocol link detects the fault of opposite end end points according to the reception condition of described detection messages.
2, method according to claim 1 is characterized in that, described steps A specifically comprises:
The two ends end points of peer-peer protocol link is after finishing discovery procedure, according to the detection messages that the time interval sends mutually and the Operations, Administration and Maintenance OAM configuration information of both sides' end points is not carried in reception of user's selection.
3, method according to claim 2 is characterized in that, described steps A specifically comprises:
The two ends end points of peer-peer protocol link sends and receives described detection messages mutually by hardware.
4, method according to claim 2 is characterized in that, the time interval that described user sets comprises: 10ms or 100ms or 1s.
5, according to claim 1,2,3 or 4 described methods, it is characterized in that described step B specifically comprises:
The end points of described peer-peer protocol link is not received the described detection messages that the opposite end end points sends in the time of setting, determine that then fault has taken place described opposite end end points.
6, method according to claim 5 is characterized in that, described step B also comprises:
The end points of described peer-peer protocol link sends the fixed format message that sets in advance to the opposite end end points after its OAM configuration information changes, notice opposite end end points restarts to carry out discovery procedure; And the two ends end points stops to send described detection messages.
7, method according to claim 1 is characterized in that, described peer-peer protocol comprises: the 802.3ah agreement.
8, a kind of device of realizing the quick fault testing of point-to-point is characterized in that, comprising:
Peer-peer protocol link end points: be used for after finishing discovery procedure, according to mutual the transmission and the reception detection messages of the time interval of selecting; And detect the fault of opposite end end points according to the reception condition of described detection messages.
9, the device of the quick fault testing of realization point-to-point according to claim 8 is characterized in that, described peer-peer protocol link end points specifically comprises:
The time interval is selected module: be used to select to send and receive the time interval of detection messages, and the time interval of selecting is passed to detection messages transmission and receiver module;
Detection messages sends and receiver module; Be used for the time interval information of selecting module to pass over according to the time interval, send and receive detection messages to the opposite end end points by hardware;
Fault detection module: be used for sending and the reception condition of the described detection messages that receiver module receives, detect the fault of opposite end end points according to detection messages.
10, the device of the quick fault testing of realization point-to-point according to claim 9 is characterized in that, described peer-peer protocol link end points also comprises:
The fixed format message sending module: be used for after the OAM of described peer-peer protocol link end points configuration information changes, send the fixed format message that sets in advance to the opposite end end points, notice opposite end end points restarts to carry out discovery procedure; And the two ends end points stops to send described detection messages.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101094121B (en) * | 2007-07-23 | 2010-11-24 | 华为技术有限公司 | Method, system and device for detecting Ethernet links among not direct connected devices |
| CN101707536B (en) * | 2009-11-25 | 2011-09-07 | 成都市华为赛门铁克科技有限公司 | Fault detection method, line card and main control card |
| CN101355450B (en) * | 2008-09-10 | 2011-11-30 | 中兴通讯股份有限公司 | Method for preventing link from switching frequently |
| CN102355335A (en) * | 2011-09-13 | 2012-02-15 | 中兴通讯股份有限公司 | Unidirectional link detection result notification method and device |
| WO2012079369A1 (en) * | 2010-12-13 | 2012-06-21 | 中兴通讯股份有限公司 | Method and system for identifying and processing abnormal frame |
| CN101272310B (en) * | 2007-03-22 | 2013-02-13 | 华为技术有限公司 | Ethernet looped network automatic protection rotation method and device |
| CN106130819A (en) * | 2016-07-04 | 2016-11-16 | 锐捷网络股份有限公司 | The detection method of VTEP exception and device |
| CN115118398A (en) * | 2022-07-27 | 2022-09-27 | 武汉思普崚技术有限公司 | Protocol fault tolerance testing method and system of PPP client based on Ethernet |
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2006
- 2006-08-22 CN CNB2006101099096A patent/CN100505641C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101272310B (en) * | 2007-03-22 | 2013-02-13 | 华为技术有限公司 | Ethernet looped network automatic protection rotation method and device |
| CN101094121B (en) * | 2007-07-23 | 2010-11-24 | 华为技术有限公司 | Method, system and device for detecting Ethernet links among not direct connected devices |
| CN101355450B (en) * | 2008-09-10 | 2011-11-30 | 中兴通讯股份有限公司 | Method for preventing link from switching frequently |
| CN101707536B (en) * | 2009-11-25 | 2011-09-07 | 成都市华为赛门铁克科技有限公司 | Fault detection method, line card and main control card |
| WO2012079369A1 (en) * | 2010-12-13 | 2012-06-21 | 中兴通讯股份有限公司 | Method and system for identifying and processing abnormal frame |
| CN102355335A (en) * | 2011-09-13 | 2012-02-15 | 中兴通讯股份有限公司 | Unidirectional link detection result notification method and device |
| CN106130819A (en) * | 2016-07-04 | 2016-11-16 | 锐捷网络股份有限公司 | The detection method of VTEP exception and device |
| CN106130819B (en) * | 2016-07-04 | 2019-10-25 | 锐捷网络股份有限公司 | The detection method and device of VTEP exception |
| CN115118398A (en) * | 2022-07-27 | 2022-09-27 | 武汉思普崚技术有限公司 | Protocol fault tolerance testing method and system of PPP client based on Ethernet |
| CN115118398B (en) * | 2022-07-27 | 2022-11-22 | 武汉思普崚技术有限公司 | Protocol fault tolerance testing method and system of PPP client based on Ethernet |
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| CN100505641C (en) | 2009-06-24 |
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