CN101299693B - Method and device for detecting fault of forwarding plane - Google Patents
Method and device for detecting fault of forwarding plane Download PDFInfo
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- CN101299693B CN101299693B CN2008101329491A CN200810132949A CN101299693B CN 101299693 B CN101299693 B CN 101299693B CN 2008101329491 A CN2008101329491 A CN 2008101329491A CN 200810132949 A CN200810132949 A CN 200810132949A CN 101299693 B CN101299693 B CN 101299693B
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Abstract
The embodiment of the invention discloses a method for detecting fault of forwarding plane, including: transmitting testing packets containing specific identification to a forwarding plane; receiving the testing packet treated by the forwarding plane; and comparing whether the transmitted testing packet is conform to the testing packet treated by the forwarding plane, if not, reporting fault. The embodiment of the invention discloses a device for detecting fault of forwarding plane, including: a transmitting module, for transmitting testing packets to the forwarding plane; a receiving module, for receiving the testing packet treated by the forwarding plane; and a comparison module, for comparing whether the transmitted testing packet is conform to the testing packet treated by the forwarding plane, if not, reporting fault. The method and device for detecting fault of forwarding plane disclosed by the embodiment of the invention can reliably detect fault of forwarding plane.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and apparatus that detects fault of forwarding plane.
Background technology
NP (Network Processor, network processing unit) is a kind of by optimizing network processes, finishes the network processes task handling device that CPU (Central Processing Unit, central processing unit) is bad at.NP adopt to optimize architecture, special instruction set and hardware cell, satisfies the requirement that the high-speed data packets linear speed is handled, and is widely used in communication equipment such as router, Ethernet switch, fire compartment wall, network interface card and the network system.
NP can make up distributed or integrated system, is applied in the various communication equipments.As shown in Figure 1, the distributed system for making up by NP in the prior art.The building mode that distributed system adopts control plane to separate with Forwarding plane more, control plane mainly are responsible for the processing of agreement, control message, the configuration of forwarding-table item, the management of device attribute etc.; Forwarding plane mainly is responsible for the processing and the forwarding of data message.
In distributed system, if break down can't operate as normal for Forwarding plane, and control plane perception in time and report webmaster can cause inestimable economic loss.Therefore, detect fault of forwarding plane in time, reliably, use most important for network security.
In the prior art, be, in Forwarding plane, mark off a detection module, finish detection, and testing result is initiatively reported control plane, perhaps initiatively get by control plane to Forwarding plane by detection module to the detection method of fault of forwarding plane.Detection module adopts specific algorithm to detect at the specific features in the Forwarding plane, detect fault after, by Forwarding plane proactive notification control plane.
In the prior art, the detection method of fault of forwarding plane is depended on the operate as normal of detection module in the Forwarding plane, unusual if detection module occurs, then can't detect fault, poor reliability; In addition, different detection methods is arranged, detect the cost height, poor expandability for different faults.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus that detects fault of forwarding plane, has realized the complete detection to fault of forwarding plane.
For achieving the above object, the embodiment of the invention proposes a kind of method that detects fault of forwarding plane on the one hand, may further comprise the steps:
Transmission comprises the detection messages of special identifier to Forwarding plane, and the transmit leg of described detection messages is positioned at outside the described Forwarding plane;
Described detection messages is counted;
Receive the described detection messages that described Forwarding plane was handled, the recipient of described detection messages is positioned at outside the described Forwarding plane;
Relatively whether the described detection messages handled of described detection messages of Fa Songing and described Forwarding plane meets, if the described detection messages that described detection messages that sends and described Forwarding plane were handled does not meet, then reports fault;
Counting module is used at described sending module after described Forwarding plane sends described detection messages, and the described detection messages that described sending module sends is counted;
Judge module, whether the count value that is used to judge the described message that described counting module is handled is greater than the count threshold of setting.
The embodiment of the invention also proposes a kind of device that detects fault of forwarding plane, is positioned at outside the Forwarding plane, comprising:
Sending module is used to send the detection messages that comprises special identifier and arrives described Forwarding plane;
Receiver module is used to receive the described detection messages that described Forwarding plane was handled;
Whether comparison module is used for the described detection messages of more described sending module transmission and the described detection messages of described receiver module reception and meets;
The module that reports an error is used for comparative result at described comparison module for after not meeting, and is used to report fault;
Counting module is used at described sending module after described Forwarding plane sends described detection messages, and the described detection messages that described sending module sends is counted;
Judge module, whether the count value that is used to judge the described message that described counting module is handled is greater than the count threshold of setting.
The technical scheme of the embodiment of the invention has the following advantages, because adopted detection method and the device that is independent of Forwarding plane, thereby, reached the operate as normal that does not rely on Forwarding plane, detect the effect of fault of forwarding plane reliably.
Description of drawings
Fig. 1 is the typical distribution formula network architecture figure that is made up by NP of the prior art;
Fig. 2 is the structure drawing of device of the detection fault of forwarding plane in the embodiment of the invention;
Fig. 3 is a kind of concrete structure figure of the device of the detection fault of forwarding plane in the embodiment of the invention;
Fig. 4 is the method flow diagram of the detection fault of forwarding plane in the embodiment of the invention;
Fig. 5 is a kind of specific implementation flow chart of the detection fault of forwarding plane in the embodiment of the invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail: as shown in Figure 2, be the structure drawing of device of the detection fault of forwarding plane in the embodiment of the invention, the device of this detection fault of forwarding plane is positioned at outside the Forwarding plane, comprising:
Sending module 210 is used to send the detection messages that comprises special identifier and arrives Forwarding plane.
Sending module 210 to Forwarding plane, has the routing forwarding list item of the destination address correspondence of detection messages according to different port type timed sending detection messages in the Forwarding plane.Information such as the source of message, destination address also can be provided with by the user.For detection messages and common packet being made a distinction at Forwarding plane, in sending to the interface of Forwarding plane, increase special identifier, this special identifier is used to make Forwarding plane identification detection messages.
Receiver module 220 is used to receive the detection messages that Forwarding plane was handled.
Whether comparison module 230 is used for the detection messages that Forwarding plane that detection messages that comparison sending module 210 sends and receiver module 220 receive handled and meets.
Under the situation of Forwarding plane operate as normal, by special identifier identification detection messages, and can not make modification on any data to the detection messages that receives, therefore, the information of the detection messages that detection messages that sends and Forwarding plane were handled can be identical, if relatively the back finds that two message informations are inequality, then fault has appearred in a certain processing links in the Forwarding plane.
The module 240 that reports an error is used for comparative result at comparison module 230 for after not meeting, and is used to report fault.
For after not meeting, the module that reports an error 240 is to control plane report fault at the comparative result of comparison module 230, also can be in journal file with failure logging, and perhaps direct print fault record.
As shown in Figure 3, be a kind of concrete structure figure of the device of the detection fault of forwarding plane in the embodiment of the invention, the device of this detection fault of forwarding plane is positioned at outside the Forwarding plane, comprising:
Add module 320, add special identifier in sending to the interface of Forwarding plane, this special identifier is used to make Forwarding plane identification detection messages.
Sending module 330 is used to send the detection messages that comprises special identifier and arrives Forwarding plane; Also be used for after the count resets of 340 pairs of messages of counting module, continue to send detection messages to Forwarding plane.
Sending module 330 to Forwarding plane, has the routing forwarding list item of the destination address correspondence of detection messages according to different port type timed sending detection messages in the Forwarding plane.Information such as the source of message, destination address also can be provided with by the user.For detection messages and common packet being made a distinction at Forwarding plane, in sending to the interface of Forwarding plane, increase special identifier, this special identifier is used to make Forwarding plane identification detection messages.
Counting module 340 is used at sending module 330 after Forwarding plane sends detection messages the detection messages that sending module sends being counted; Also be used for comparative result at comparison module 370 for after meeting, with the count resets of message.
In the present embodiment, above-mentioned detection messages is counted is specially " adding 1 ", and the count resets of message is specially " zero clearing ".
Need be pointed out that further, count and the method that resets is not limited only to this that can also comprise other the numerical value change that can reach counting effect and reset effect, such variation belongs to protection scope of the present invention equally.
For example, constantly send detection messages owing to detect the device of fault of forwarding plane, and do not receive the indication of count resets to Forwarding plane, counting can repeat the operation of " adding 1 ", increases always, thereby, surpass preset threshold, at this moment, need report fault to control plane.
Corresponding counting module 340;, detection messages is specially " adding 1 " other operations in addition when being counted; during as " subtracting 1 "; also can changing to of the Rule of judgment correspondence of judge module 350 is less than or equal to predetermined threshold value; such variation and without prejudice to technological thought of the present invention belongs to protection scope of the present invention too.
Threshold value can rule of thumb be set by the software developer, also can in use be provided with as required by the user.
Whether comparison module 370 is used for the detection messages that Forwarding plane that detection messages that comparison sending module 330 sends and receiver module 360 receive handled and meets.
Under the situation of Forwarding plane operate as normal, by special identifier identification detection messages, and can not make modification on any data to the detection messages that receives, therefore, the information of the detection messages that detection messages that sends and Forwarding plane were handled can be identical, if relatively the back finds that two message informations are inequality, then fault has appearred in a certain processing links in the Forwarding plane.
The module 380 that reports an error is used for comparative result at comparison module 370 for after not meeting, the report fault; Also be used for after judge module 350 is judged the count threshold of count value greater than setting of message the report fault.
The comparative result of comparison module 370 be do not meet or count value that judge module 350 is judged messages greater than the count threshold of setting after, the module that reports an error 380 is to control plane report fault, also can be in journal file with failure logging, perhaps direct print fault record.
Above-mentioned judge module 350 comprises:
Sub module stored 351 is used to store the count threshold of setting;
As shown in Figure 4, the method flow diagram for the detection fault of forwarding plane in the embodiment of the invention may further comprise the steps:
Sending module to Forwarding plane, has the routing forwarding list item of the destination address correspondence of detection messages according to different port type timed sending detection messages in the Forwarding plane.Sending module is positioned at outside the Forwarding plane.Information such as the source of message, destination address also can be provided with by the user.For detection messages and common packet being made a distinction at Forwarding plane, in sending to the interface of Forwarding plane, increase special identifier, this special identifier is used to make Forwarding plane identification detection messages.
Forwarding plane judges whether it is detection messages according to special identifier, if not detection messages, according to normal flow processing after receiving the data that control plane sends; If detection messages, it is special priority that this priority of messages then is set, and carries out normal message then and handles, and processing sends to receiver module to message after finishing, and receiver module is positioned at outside the Forwarding plane.
Under the situation of Forwarding plane operate as normal, can not make modification on any data to the detection messages that receives, the detection messages information of message after the processing and reception is identical, if relatively the back finds that two message informations are inequality, then fault has appearred in a certain processing links in the Forwarding plane.
Detect after the fault of Forwarding plane, to control plane report fault, can be in journal file with failure logging, perhaps direct print fault record.
As shown in Figure 5, a kind of specific implementation flow chart for the detection fault of forwarding plane in the embodiment of the invention may further comprise the steps:
Step 501, checkout gear are provided with the information such as source and destination address of detection messages.
This checkout gear is positioned at outside the Forwarding plane.
Step 502, checkout gear adds special identifier in sending to the interface of Forwarding plane, and this special identifier is used to make Forwarding plane identification detection messages.
Whether step 503, checkout gear judge packet counting greater than preset threshold, if then execution in step 504; Otherwise, execution in step 505.
Threshold value can rule of thumb be set by the software developer, also can in use be provided with as required by the user.
Step 504, checkout gear report fault.
Detect after the fault of Forwarding plane, to control plane report fault, can be in journal file with failure logging, perhaps direct print fault record.
Step 505, checkout gear send detection messages to Forwarding plane, and detection messages is counted.
In the present embodiment, above-mentioned detection messages is counted is specially " adding 1 ".
Need be pointed out that further that the method for counting is not limited only to this, can also comprise other the numerical value change that can reach the counting effect, such variation belongs to protection scope of the present invention equally.
Sending module to Forwarding plane, has the routing forwarding list item of the destination address correspondence of detection messages according to different port type timed sending detection messages in the Forwarding plane.Information such as the source of message, destination address also can be provided with by the user.For detection messages and common packet being made a distinction at Forwarding plane, in sending to the interface of Forwarding plane, increase special identifier, this special identifier is used to make Forwarding plane identification detection messages.
Step 506, Forwarding plane receives detection messages.
Step 507, Forwarding plane judges according to special identifier whether the data that receive are detection messages, if then execution in step 509; Otherwise, execution in step 508.
Step 508, the message that Forwarding plane receives according to normal flow processing, process ends.
The priority that step 509, Forwarding plane are provided with detection messages is special priority.
Step 510, Forwarding plane is handled detection messages.
Step 511, Forwarding plane sends to checkout gear to the detection messages of handling.
Step 512, checkout gear receives the detection messages that Forwarding plane was handled.
Step 513, whether the detection messages that the checkout gear judgement receives and the detection messages of transmission meet.
If the detection messages of detection messages that receives and transmission meets, execution in step 514;
Otherwise, if the detection messages of detection messages that receives and transmission does not meet, execution in step 515.
Step 514, checkout gear be the count resets of message, and return step 503, proceeds fault detect.
In the present embodiment, the above-mentioned count resets with message is specially " zero clearing ".
Need be pointed out that further that the method that resets is not limited only to this, can also comprise other the numerical value change that can reach reset effect, such variation belongs to protection scope of the present invention equally.
Step 515, checkout gear report fault.
Detect after the fault of Forwarding plane, to control plane report fault, can be in journal file with failure logging, perhaps direct print fault record.
The technical scheme of the embodiment of the invention has the following advantages, because adopted a kind of method and apparatus of new detection fault of forwarding plane, has reached the effect to the complete detection of Forwarding plane.This method and apparatus does not rely on the operate as normal of Forwarding plane, and realizes detecting according to the handling process of Forwarding plane, and traffic affecting does not normally move, and has very high reliability and practicality; In addition, this method and apparatus detection range is comprehensive, can be applied to module or unit that any needs detect, and the carrier of module or unit can be any communication equipment, comprises terminal, thereby has the good characteristics of extensibility.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (13)
1. a device that detects fault of forwarding plane is characterized in that, is positioned at outside the Forwarding plane, comprising:
Sending module is used to send the detection messages that comprises special identifier and arrives described Forwarding plane;
Receiver module is used to receive the described detection messages that described Forwarding plane was handled;
Whether comparison module is used for the described detection messages of more described sending module transmission and the described detection messages of described receiver module reception and meets;
The module that reports an error is used for comparative result at described comparison module for after not meeting, and is used to report fault;
Counting module is used at described sending module after described Forwarding plane sends described detection messages, and the described detection messages that described sending module sends is counted;
Judge module, whether the count value that is used to judge the described message that described counting module is handled is greater than the count threshold of setting.
2. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, described sending module also is used for comparative result at described comparison module for after meeting, and continues to send detection messages to described Forwarding plane.
3. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, also comprise:
Module is set, is used to be provided with the source and destination address information of described detection messages.
4. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, also comprise:
Add module, add special identifier in sending to the interface of described Forwarding plane, described special identifier is used to make described Forwarding plane to discern described detection messages.
5. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, the described module that reports an error also is used for after described judge module is judged the count threshold of count value greater than described setting of described message, the report fault.
6. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, described counting module also is used for comparative result at described comparison module for after meeting, to the count resets of described message.
7. detect the device of fault of forwarding plane according to claim 1, it is characterized in that, described judge module comprises:
Sub module stored is used to store the count threshold of described setting;
Judge submodule, whether the count value that is used to judge described message is greater than the count threshold of the described setting of described sub module stored storage.
8. a method that detects fault of forwarding plane is characterized in that, may further comprise the steps:
Transmission comprises the detection messages of special identifier to Forwarding plane, and the transmit leg of described detection messages is positioned at outside the described Forwarding plane;
Described detection messages is counted;
Receive the described detection messages that described Forwarding plane was handled, the recipient of described detection messages is positioned at outside the described Forwarding plane;
Relatively whether the described detection messages handled of described detection messages of Fa Songing and described Forwarding plane meets, if the described detection messages that described detection messages that sends and described Forwarding plane were handled does not meet, then reports fault;
Whether the count value of judging detection messages is greater than the count threshold of setting;
If the count value of detection messages is not more than the count threshold of described setting, then carries out described transmission and comprise the step of the detection messages of special identifier to Forwarding plane.
9. as the method for detection fault of forwarding plane as described in the claim 8, it is characterized in that, after whether the detection messages that described detection messages that relatively sends and Forwarding plane were handled meets, also comprise:
If the described detection messages that described detection messages that sends and described Forwarding plane were handled meets, then continue to send detection messages to described Forwarding plane.
10. as the method for detection fault of forwarding plane as described in the claim 8, it is characterized in that the detection messages that comprises special identifier in described transmission also comprises before the described Forwarding plane:
Add special identifier in sending to the interface of described Forwarding plane, described special identifier is used to make described Forwarding plane to discern described detection messages.
11. the method as detection fault of forwarding plane as described in the claim 10 is characterized in that, before adding special identifier, also comprises:
The information such as source and destination address of described detection messages are set.
12. the method as detection fault of forwarding plane as described in the claim 8 is characterized in that, also comprises:
If the count value of described message greater than the count threshold of described setting, is then reported fault.
13. the method as detection fault of forwarding plane as described in the claim 8 is characterized in that, after whether the detection messages that described detection messages that relatively sends and described Forwarding plane were handled meets, also comprises:
If the described detection messages that described detection messages that sends and described Forwarding plane were handled meets, with the count resets of described message, and whether the count value that described detection messages is judged in continuation is greater than the count threshold of described setting.
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| CN2008101329491A CN101299693B (en) | 2008-07-02 | 2008-07-02 | Method and device for detecting fault of forwarding plane |
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| CN2008101329491A CN101299693B (en) | 2008-07-02 | 2008-07-02 | Method and device for detecting fault of forwarding plane |
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| CN101299693B true CN101299693B (en) | 2011-02-09 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103546306B (en) * | 2012-07-13 | 2017-01-18 | 广州汽车集团股份有限公司 | Periodic CAN (cable area network) message loss fault judging system and method |
| CN105743687B (en) * | 2014-12-12 | 2020-01-10 | 中兴通讯股份有限公司 | Method and device for judging node fault |
| CN109561004B (en) * | 2019-01-29 | 2020-12-08 | 新华三技术有限公司 | Message forwarding method and device and switch |
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| WO2002043051A1 (en) * | 2000-11-23 | 2002-05-30 | France Telecom | Non-intrusive detection of defects in a packet-transmitted speech signal |
| CN1720689A (en) * | 2002-12-05 | 2006-01-11 | 思科技术公司 | Method for verifying function of redundant standby packet forwarder |
| CN1866909A (en) * | 2005-07-30 | 2006-11-22 | 华为技术有限公司 | Forwarding engine state detecting method and route device |
| CN101068119A (en) * | 2007-06-01 | 2007-11-07 | 华为技术有限公司 | Trunk state detecting method, device and testing information terminal equipment thereof |
| JP2008104031A (en) * | 2006-10-20 | 2008-05-01 | Mitsubishi Electric Corp | Inter-board trouble detection circuit |
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2008
- 2008-07-02 CN CN2008101329491A patent/CN101299693B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002043051A1 (en) * | 2000-11-23 | 2002-05-30 | France Telecom | Non-intrusive detection of defects in a packet-transmitted speech signal |
| CN1720689A (en) * | 2002-12-05 | 2006-01-11 | 思科技术公司 | Method for verifying function of redundant standby packet forwarder |
| CN1866909A (en) * | 2005-07-30 | 2006-11-22 | 华为技术有限公司 | Forwarding engine state detecting method and route device |
| JP2008104031A (en) * | 2006-10-20 | 2008-05-01 | Mitsubishi Electric Corp | Inter-board trouble detection circuit |
| CN101068119A (en) * | 2007-06-01 | 2007-11-07 | 华为技术有限公司 | Trunk state detecting method, device and testing information terminal equipment thereof |
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