CN106559288A - A kind of quick fault testing method based on icmp packet - Google Patents
A kind of quick fault testing method based on icmp packet Download PDFInfo
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- CN106559288A CN106559288A CN201611051832.1A CN201611051832A CN106559288A CN 106559288 A CN106559288 A CN 106559288A CN 201611051832 A CN201611051832 A CN 201611051832A CN 106559288 A CN106559288 A CN 106559288A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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Abstract
The present invention relates to a kind of quick fault testing method based on icmp packet, comprises the steps：It is determined that the test equipment of connection required for test, selects the test equipment communicated using ICP/IP protocol by bottom, and sets up test equipment connection list；Before equipment initialization, in test process, after test terminates, host computer periodically sends icmp packet to the test equipment in connection list, order is returned until receiving normal icmp packet, if icmp packet is not received in time-out time returns order, then it is assumed that network or test equipment have failure, fault cues information is exported；Quick fault testing technology based on icmp packet proposed by the present invention, judges by way of sending icmp packet and waiting icmp reply message whether link is normal, can find failure in time, and switch to redundance unit.
Description
Technical field
The present invention relates to a kind of quick fault testing method based on icmp packet, belongs to observation and control technology field.
Background technology
In Aerospace Tracking ＆ Control, a kind of external equipment is there is, the external equipment is communicated using the driving of encapsulation,
Driving interface is needed only to outside equipment operation.By taking VXI equipment as an example, this kind equipment uses VISA general-purpose interfaces in application layer,
And communicated in the actually used ICP/IP protocol of bottom.Due to the imperfection of external drive, the driving of this kind equipment is being called
When, it is impossible to link failure is recognized in time, even if causing with the presence of redundance unit, as failure cannot be found in time, redundance unit
Practical function cannot be played.
When the driving function provided using measuring and controlling equipment is operated to equipment, due to the imperfection for driving, it is impossible to and
When recognize communication link fails；When communication link breaks down, being continuing with driving offer method its result be can not be pre-
Survey, application program may be caused under extreme case without response, or even exception is exited.Therefore, how such setting is being diagnosed in time
Standby link failure, and the switching of redundance unit is carried out for the reliability for improving observing and controlling has far-reaching significance.
At this stage, in the TT＆C system using this kind equipment, technological means are there is no to detect the link of such external equipment
Failure, needs manually to check to ensure the normal of communication link in the preparatory stage, not only needs to expend substantial amounts of manpower and materials,
And only can guarantee that the correctness of the link before equipment connection, it is impossible to the link failure that detection occurs in test process.
How automatic identification link failure is this area technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of quick fault testing based on icmp packet
Technology, judges by way of sending icmp packet and waiting icmp reply message whether link is normal, can find in time
Failure, and switch to redundance unit.
The object of the invention is achieved by following technical solution：
A kind of quick fault testing method based on icmp packet is provided, is comprised the steps：
(1) determine the test equipment of connection required for test, select the test communicated using ICP/IP protocol by bottom
Equipment, and set up test equipment connection list；
(2) before equipment initialization, host computer periodically sends icmp packet to the test equipment in connection list, until
Receive normal icmp packet and return order, if icmp packet is not received in time-out time returns order, then it is assumed that network or survey
There is failure in examination equipment, export fault cues information；
(3) in test process, icmp packet is periodically sent from host computer to the test equipment connected in list, if
Icmp packet is not received in time-out time and returns order, then it is assumed that network or test equipment have failure, output fault cues letter
Breath, and stop using the test equipment to continue test, if there is redundance unit, it is switched to redundance unit and proceeds test；
If icmp packet is received in time-out time returns order, show that the test equipment connection is normal, the test equipment can be used
Continue test；
(4) after test terminates, host computer periodically sends icmp packet to the test equipment in connection list, if
Icmp packet is not received in time-out time and returns order, then it is assumed that network or test equipment have failure, export fault cues information；
If icmp packet is received in time-out time returns order, show that test equipment connection is normal, being capable of the normal switching-off test
Equipment.
Preferably, step (2) concrete operation method is：
A. the equipment connection list set up in read step (1), and obtain each test equipment in equipment connection list
IP address；
B. ICMP request messages are sent to each IP address by Ethernet, and waits the icmp reply of each test equipment
Message, the wherein time-out time of icmp reply message are adjusted according to following principle dynamic：
B1. time-out time initial value is set to Ttimeout, under default conditions, adopt 100ms；
If b2. test equipment is that embedded device or processor host frequency are less than 1Ghz, TtimeoutValue increases 50ms；
If b3. equipment to be connected is not at the same network segment with host computer, a layer switch T is often crossed overtimeoutValue increases
50ms；
If b4. reply message is not received in specified time-out time, allow to retry automatically, at most retry 2 times, every time weight
Examination TtimeoutValue increases 100ms；
If reply message is c. received in time-out time, then it is assumed that device network connection has been set up and can have been carried out just
Beginningization, if icmp packet is not received in time-out time returns order, then it is assumed that network or test equipment have failure, output event
Barrier information.
Preferably, step (3) is periodically sent from host computer to the test equipment connected in list in test process
The concrete grammar of icmp packet is：
A. set up keepalive mechanism to the equipment for connecting and initializing having been set up in step (2), whenever interval TspanTime
When not carrying out data transmission with certain test equipment, then ICMP request messages are sent from host computer to the test equipment, be somebody's turn to do with detecting
Test equipment running status；The time-out time of icmp reply message is adjusted according to following principle dynamic：
A1. time-out time initial value is set to Ttimeout, under default conditions, adopt 100ms；
If a2. test equipment is that embedded device or processor host frequency are less than 1Ghz, TtimeoutValue increases 50ms；
If a3. equipment to be connected is not at the same network segment with host computer, a layer switch T is often crossed overtimeoutValue increases
50ms；
If reply message is not c. received in time-out time, then it is assumed that network or the test equipment have failure, this
If when there is redundancy backup equipment, automatically switch to alternate device and provide fault cues, if there is no redundancy backup equipment,
Then provide miscue information and stop using the equipment to continue test；If reply message is received in time-out time, recognize
It is normal for the test equipment, can continue to for testing.
Preferably, the concrete grammar that the test described in step (4) terminates that rear equipment closes is：
To in step (3), the normal test equipment of all states sends request message, and if waiting to be answered in time-out
The interior icmp packet that do not receive returns order, then it is assumed that network or test equipment have failure, exports fault cues information, and continues
Detection test equipment state, until equipment state recovers good or user's cancellation；If receiving icmp packet in time-out time
Hui Ling, then show that the test equipment connection is normal, initialized and closed for detecting that normal equipment calls driving function is counter
Hull closure.
The present invention is had the advantage that compared with prior art：
(1) fault detection method of the invention is set to test before initialization, in test process and after test terminates
It is standby to carry out fault detect, just call driving function to operate equipment when guaranteeing that test equipment state is ready to, it is to avoid
Due to the risk for driving imperfection to bring to host computer so that the reliability of whole system is further improved；
(2) there is provided operating fault detection mechanism, it is ensured that switch in link or device fails in time
To redundancy backup equipment, hot spare devices are made really to play a role.
Description of the drawings
Fig. 1 is present device initial phase fault detect flow chart；
Fig. 2 is test phase fault detect flow chart of the present invention；
Fig. 3 is pass hull closure stage fault detect flow chart of the present invention.
Specific embodiment
Method proposed by the present invention carries out fault detect, all use TCP/ using the ICMP agreements in TCP/IP protocol suite
IP agreement carries out the equipment of network service and supports ICMP agreements, after the equipment on network receives ICMP request messages, needs
To specify in time-out time to other side's loopback icmp reply message, communication link can be being carried out effectively by this mechanism
Check, and the failure of presence can be had found that it is likely that in time, to carry out respective handling.
Quick fault testing method based on icmp packet proposed by the present invention is broadly divided into the following four stage：
(1) the state preparatory stage, determine the test equipment of connection required for this test, select bottom and assisted using TCP/IP
The test equipment communicated by view, and set up equipment connection list.
Step (1) selects equipment to be used according to test to be performed project demands, and according to the feature of every kind of equipment
Classified, to being attached using Ethernet and needing the equipment for carrying out fault detect to set up list in software, in case after
Continuous detection is used.
(2) before equipment initialization, the host computer (usually survey and send out control software) in TT＆C system needs to call equipment to drive
It is dynamic that test equipment in list is initialized, it is to guarantee that now equipment goes up that electricity is completed and network is connected, upper
Machine sends icmp packet to device periodically to be connected, returns order until receiving normal icmp packet, now shows equipment
Connect, can normal call driving function equipment is initialized, equipment initialization flow process it is as shown in Figure 1.If about
The interior icmp packet that do not receive of fixing time returns order, then it is assumed that network or test equipment have failure, export fault cues information.
Shape was carried out using transmission icmp packet and by the way of taking over icmp packet reply before initialization or homing device
State detects, completes and can be initialized to judge whether equipment has connected.This step concrete operation method is：
A. the list set up in read step (1), and obtain the IP address of each equipment in list；
B. ICMP request messages are sent to each IP address by Ethernet, can be used on windows platform
IcmpCreateFile and IcmpSendEcho series A PI complete the operation, and wait icmp reply message, wherein icmp reply
The time-out time of message is adjusted according to following principle dynamic：
B1. time-out time initial value is set to Ttimeout, under default conditions, adopt empirical value 100ms；
If b2. device handler performance to be connected is weaker (as embedded device or processor host frequency are less than 1Ghz),
TtimeoutValue increases 50ms；
If b3. equipment to be connected is not at the same network segment with host computer, a layer switch T is often crossed overtimeoutValue increases
50ms；
If b4. reply message is not received in specified time-out time, allow to retry automatically, at most retry 2 times, every time weight
Examination TtimeoutValue increases 100ms.
If c. receiving reply message in specified time-out time, then it is assumed that device network connection has been set up and can have been entered
Row initialization, otherwise provides information to remind user.
(3) in test process, it is to find test equipment failure in time, icmp packet is periodically sent to setting by host computer
Standby situation in place is detected.When mistake is detected, miscue is given in time, and stops using the equipment to continue test；
If there is redundance unit, it is switched to redundance unit and proceeds test, test phase fault detection mechanism is as shown in Figure 2.
A. set up Keep-Alive mechanism to the equipment for connecting and initializing being completed in step (2), whenever interval
TspanWhen time is not carried out data transmission with certain equipment, need to send ICMP request messages, with testing equipment running status, wherein
TspanUsing empirical value 2S, the value can require dynamic adjustment, T according to system reliabilityspanValue is less, then can detect sooner
Problem, but system and network overhead also accordingly increase, and vice versa.The time-out time computational methods step of icmp reply message
(2) it is consistent in, but do not allow to retry automatically.
B. for ICMP detects unsanctioned equipment, if there is redundancy backup equipment, automatically switch to alternate device simultaneously
Prompting is given, miscue information is otherwise given and is stopped using the equipment to continue test.To avoid casual network congestion from causing
Network Abnormal, above-mentioned switching allows repeatedly.
(4) after test terminates, need call driver interface to close all initialized equipment, be to ensure to close
Operation is smoothly completed, and in call driver, equipment connection is detected by icmp packet first, only when setting
Subsequent operation is just carried out for when connecting normal, mistake is otherwise pointed out, fault detection mechanism is as shown in Figure 3 at the end of test.
A. request message is sent to all equipment for completing to connect and initialize in step (2), and wait to be answered, side
Method is consistent with the method described in step (2)；
B. it is for the normal equipment calls driving function of detection carries out anti-initialization pass hull closure, abnormal for detecting
Equipment provide information to remind user, and persistently detect opposite end situation, until equipment state recovers good or user taking
Disappear；
C. good for recovering state in step b equipment calls driving function carries out anti-initialization pass hull closure.
The above, optimal specific embodiment only of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (4)
1. a kind of quick fault testing method based on icmp packet, it is characterised in that comprise the steps：
(1) determine the test equipment of connection required for test, select the test equipment communicated using ICP/IP protocol by bottom,
And set up test equipment connection list；
(2) before equipment initialization, host computer periodically sends icmp packet to the test equipment in connection list, until receiving
Order is returned to normal icmp packet, if icmp packet is not received in time-out time returns order, then it is assumed that network or test set
It is standby to there is failure, export fault cues information；
(3) in test process, icmp packet is periodically sent from host computer to the test equipment connected in list, if super
When the time in do not receive icmp packet and return order, then it is assumed that there is failure in network or test equipment, export fault cues information, and
Stop using the test equipment to continue test, if there is redundance unit, be switched to redundance unit and proceed test；If
Icmp packet is received in time-out time and returns order, then shown that the test equipment connection is normal, can continue to survey using the test equipment
Examination；
(4) after test terminates, host computer periodically sends icmp packet to the test equipment in connection list, if in time-out
Icmp packet is not received in time and returns order, then it is assumed that network or test equipment have failure, export fault cues information；If
Icmp packet is received in time-out time and returns order, then show that test equipment connection is normal, being capable of the normal switching-off test equipment.
2. the quick fault testing method based on icmp packet as claimed in claim 1, it is characterised in that step (2) is concrete
Operational approach is：
A. the equipment connection list set up in read step (1), and obtain the IP of each test equipment in equipment connection list
Address；
B. ICMP request messages are sent to each IP address by Ethernet, and waits the icmp reply report of each test equipment
Text, the wherein time-out time of icmp reply message are adjusted according to following principle dynamic：
B1. time-out time initial value is set to Ttimeout, under default conditions, adopt 100ms；
If b2. test equipment is that embedded device or processor host frequency are less than 1Ghz, TtimeoutValue increases 50ms；
If b3. equipment to be connected is not at the same network segment with host computer, a layer switch T is often crossed overtimeoutValue increases 50ms；
If b4. reply message is not received in specified time-out time, allow to retry automatically, at most retry 2 times, retry every time
TtimeoutValue increases 100ms；
If reply message is c. received in time-out time, then it is assumed that device network connection has been set up and can have been carried out initial
Change, if icmp packet is not received in time-out time returns order, then it is assumed that network or test equipment have failure, export failure
Information.
3. the quick fault testing method based on icmp packet described in claim 1 or 2, it is characterised in that step (3) is being surveyed
During examination, from host computer to the concrete grammar that the test equipment connected in list periodically sends icmp packet it is：
A. set up keepalive mechanism to the equipment for connecting and initializing having been set up in step (2), whenever interval TspanTime not with certain
When test equipment carries out data transmission, then ICMP request messages are sent from host computer to the test equipment, to detect that the test sets
Standby running status；The time-out time of icmp reply message is adjusted according to following principle dynamic：
A1. time-out time initial value is set to Ttimeout, under default conditions, adopt 100ms；
If a2. test equipment is that embedded device or processor host frequency are less than 1Ghz, TtimeoutValue increases 50ms；
If a3. equipment to be connected is not at the same network segment with host computer, a layer switch T is often crossed overtimeoutValue increases 50ms；
If reply message is not c. received in time-out time, then it is assumed that network or the test equipment have failure, if now
There is redundancy backup equipment, then automatically switch to alternate device and provide fault cues, if there is no redundancy backup equipment, give
The information that makes mistake simultaneously stops using the equipment to continue test；If reply message is received in time-out time, then it is assumed that should
Test equipment is normal, can continue to for testing.
4. the quick fault testing method based on icmp packet described in claim 1 or 3, it is characterised in that step is retouched in (4)
The test stated terminates the concrete grammar of rear equipment closing：
To in step (3), the normal test equipment of all states sends request message, and if waiting to be answered in time-out time
Do not receive icmp packet and return order, then it is assumed that network or test equipment have failure, export fault cues information, and persistently detect
Test equipment state, until equipment state recovers good or user's cancellation；If icmp packet is received in time-out time returns order,
Then show that test equipment connection is normal, for detect normal equipment calls driving function it is counter initialized and closed set
It is standby.
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| CN106559288B (en) | 2019-11-12 |
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