CN109274610A - The ARINC664 network switch with port BIT test function - Google Patents
The ARINC664 network switch with port BIT test function Download PDFInfo
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- CN109274610A CN109274610A CN201810917661.9A CN201810917661A CN109274610A CN 109274610 A CN109274610 A CN 109274610A CN 201810917661 A CN201810917661 A CN 201810917661A CN 109274610 A CN109274610 A CN 109274610A
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- port
- bit test
- switching engine
- port bit
- termination system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/55—Prevention, detection or correction of errors
- H04L49/555—Error detection
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of ARINC664 network switch with port BIT test function, include processor, exchange termination system, switching engine and port BIT test module, the switching engine includes a first port and several second ports, in test mode, processor generation error frame is simultaneously sent to port BIT test module by exchange termination system, if subsequent exchange engine can not filter out the erroneous frame, it is abnormal to judge that the filtering function of the port of switching engine occurs；Port BIT test module is sent in sequence to the erroneous frame from exchange termination system in each second port of switching engine.The present invention realizes that the BIT of mistake filtering and flow management filtering function is tested in the case where not redesigning switching engine chip, and interchanger is made to meet functional completeness and testability demand.
Description
Technical field
The present invention relates to the airborne ARINC664 network switch, in particular to the filtering function of a kind of pair port is carried out from survey
Try the ARINC664 network switch of (BIT).
Background technique
ARINC664 network is a kind of full-duplex switched Ethernet suitable for avionics system, is widely used to France
Air Passenger A380, Chinese quotient fly on the airliners such as C919, to meet data bus bandwidth and service quality growing on machine
Etc. demands, wherein the ARINC664 network switch is the core component of ARINC664 network for providing data exchange service.For
Guarantee network service quality, each port of ARINC664 agreement regulation interchanger must realize filtering function to abandon not
Meet the data frame of ARINC664 agreement.The filtering function of interchanger includes that mistake filtering and flow management filter both filterings
Type, ginseng are shown in Table 1
1 mistake filtering of table and flow management filter list
Under normal circumstances, the filtering function of the ARINC664 network switch can correctly filter the data of various mistakes
Frame, but under the adverse circumstances such as high temperature, low temperature, electromagnetic radiation, the filtering function of each port of the ARINC664 network switch
It may fail because of a variety of causes, such filtering function can not just play the role of filter false data frame.At certain ends
When the filtering function failure of mouth, need to close these ports as early as possible, be forwarded by the switch away wrong data will not lead to shadow
Entire ARINC664 network is rung, to improve safety.
The ARINC664 network switch generally has typical hardware structure as shown in Figure 1, and switching engine is supported in total
25 ports, middle port 0 are connected with exchange termination system, and port 1-24 can be used by exterior terminal, are exterior terminal
Data exchange service is provided.Port 0 and port 1-24 in switching engine are achieved that filtering function, when some port receives not
It can be abandoned when meeting ARINC664 protocol data frame.
Exchange termination system in bridge terminal FPGA realizes terminal protocol stack, to run application on a processor
The interface of program offer data transmit-receive.
Switch software is run on processor, wherein BIT software is used to test and monitor the health status of interchanger.
This hardware structure can only support the BIT of the filtering function of switching engine port 0 to test, but can not support port 1-24
BIT test because BIT software can not to port 1-24 send test data frame, be also just unable to test their filtering function
Whether can operate normally.Therefore, this hardware configuration is unable to satisfy the integrality demand of switch function.
In addition, civil aircraft airborne equipment has very high requirement to testability, usually require that self-test can detect on machine
To 95% or more disabler.If self-test can not be carried out to the filtering function of interchanger, will be unable to meet this demand.
Summary of the invention
Goal of the invention of the invention is to provide a kind of ARINC664 network switch for having port BIT test function, is
Realize that the BIT of mistake filtering and flow management filtering function is surveyed when not redesigning the hardware configuration of switching engine chip
Examination, makes interchanger meet following functions integrality and testability demand:
1. interchanger can not detect that the probability of functional fault is needed to be less than equal to 1.0x10-6Per pilot time.
2. interchanger needs to detect 95% or more built-in function failure.
Goal of the invention of the invention is achieved through the following technical solutions:
A kind of ARINC664 network switch with port BIT test function includes processor, exchange termination system
System, switching engine and port BIT test module, the switching engine include a first port and several second ports, the
Single port carries out data transmission with exchange termination system；
In test mode:
Processor generation error frame is simultaneously sent to port BIT test module by exchange termination system, if subsequent exchange
Engine can not filter out the erroneous frame, then it is abnormal to judge that the filtering function of the port of switching engine occurs；
Erroneous frame from exchange termination system is sent in sequence to each the of switching engine by port BIT test module
On Two-port netwerk.
The ARINC664 network switch with port BIT test function also includes data collector, in the normal mode:
The data frame received is sent to port BIT test module by data collector；
Port BIT test module, the data frame that data collector is received are sent directly to the second end of switching engine
On mouth.
Switching engine turns data frame for receiving the data frame from first port and second port, and according to allocation list
It is dealt into corresponding port.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the tradition ARINC664 network switch.
Fig. 2 is the structural schematic diagram of the ARINC664 network switch with port BIT test function.
Fig. 3 is the workflow schematic diagram of the ARINC664 network switch with port BIT test function.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
It is shown in Figure 2, a kind of ARINC664 network exchange with port BIT test function shown in the present embodiment
Machine, includes processor, exchange termination system, switching engine, port BIT test module and data collector, and the exchange is drawn
Hold up comprising a first port (port 0) and several second ports (port 1-24), first port and exchange termination system into
The transmission of row data.The ARINC664 network switch has two kinds of operating modes, and one kind is test pattern, and another kind is normal mode
Formula.
In test mode:
Processor generation error frame is simultaneously sent to port BIT test module by exchange termination system, if subsequent exchange
Engine can not filter out the erroneous frame, then it is abnormal to judge that the filtering function of the port of switching engine occurs；
Erroneous frame from exchange termination system is sent in sequence to each the of switching engine by port BIT test module
On Two-port netwerk；
If the filtering function of second port is normal, this erroneous frame can be abandoned, otherwise erroneous frame can be received.
The building of erroneous frame is shown in Figure 2.
2 error data frame of table constructs sample table
In the normal mode:
The data frame received is sent to port BIT test module by data collector；
Port BIT test module, the data frame that data collector is received are sent directly to the second end of switching engine
On mouth.
Switching engine turns data frame for receiving the data frame from first port and second port, and according to allocation list
It is dealt into corresponding port.
It is shown in Figure 3, the ARINC664 network switch, workflow are as follows: the ARINC664 network switch is introduced into
Test pattern, whether the filtering function for testing each port is all normal, if the function of port normally enters operating mode.
Claims (2)
1. a kind of ARINC664 network switch with port BIT test function, comprising processor, exchange termination system,
Switching engine, the switching engine include a first port and several second ports, first port and exchange termination system
System carries out data transmission, it is characterised in that also includes port BIT test module；
In test mode, generation error frame is simultaneously sent to port BIT test mould by exchange termination system to the processor
It is abnormal to judge that the filtering function of the port of switching engine occurs if subsequent exchange engine can not filter out the erroneous frame for block；
Erroneous frame from exchange termination system in test mode, is sent in sequence to friendship by the port BIT test module
It changes in each second port of engine.
2. a kind of ARINC664 network switch with port BIT test function according to claim 1, it is characterised in that
It also include data collector；
The data collector is sent to port BIT test module in the normal mode of operation, the data frame received；
In the normal mode of operation, the data frame that data collector is received is sent directly to the port BIT test module
In the second port of switching engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917661.9A CN109274610A (en) | 2018-08-13 | 2018-08-13 | The ARINC664 network switch with port BIT test function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810917661.9A CN109274610A (en) | 2018-08-13 | 2018-08-13 | The ARINC664 network switch with port BIT test function |
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| Publication Number | Publication Date |
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| CN109274610A true CN109274610A (en) | 2019-01-25 |
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| CN201810917661.9A Pending CN109274610A (en) | 2018-08-13 | 2018-08-13 | The ARINC664 network switch with port BIT test function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115174456A (en) * | 2022-06-29 | 2022-10-11 | 中国航空无线电电子研究所 | Method for testing control capability of multi-plane ARINC664 switch |
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| US20160154391A1 (en) * | 2014-11-27 | 2016-06-02 | Airbus Operations Limited | Avionics networks |
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| CN1430141A (en) * | 2001-12-26 | 2003-07-16 | 株式会社东芝 | Microprocessor and processing method of microprocessor |
| CN102098216A (en) * | 2010-12-21 | 2011-06-15 | 中国航空无线电电子研究所 | Avionics full duplex switched Ethernet (AFDX) protocol switching engine based on shared storage |
| CN102968351A (en) * | 2012-12-13 | 2013-03-13 | 中国航空无线电电子研究所 | External control method for BIT parameters |
| US20140313943A1 (en) * | 2013-04-19 | 2014-10-23 | Airbus Operations (S.A.S) | Distributed method of data acquisition in an afdx network |
| US20160154391A1 (en) * | 2014-11-27 | 2016-06-02 | Airbus Operations Limited | Avionics networks |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115174456A (en) * | 2022-06-29 | 2022-10-11 | 中国航空无线电电子研究所 | Method for testing control capability of multi-plane ARINC664 switch |
| CN115174456B (en) * | 2022-06-29 | 2023-09-08 | 中国航空无线电电子研究所 | Multi-plane ARINC664 switch control capability test method |
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Application publication date: 20190125 |