CN116760756A - Method for testing terminal equipment based on test switch and test switch network - Google Patents

Method for testing terminal equipment based on test switch and test switch network Download PDF

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Publication number
CN116760756A
CN116760756A CN202311026312.5A CN202311026312A CN116760756A CN 116760756 A CN116760756 A CN 116760756A CN 202311026312 A CN202311026312 A CN 202311026312A CN 116760756 A CN116760756 A CN 116760756A
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China
Prior art keywords
address
test
message
tested
test switch
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CN202311026312.5A
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CN116760756B (en
Inventor
谭刘颗
黄小春
王斌
王楚钿
阳湘纯
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Hunan Tianguan Electronic Information Technology Co ltd
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Hunan Tianguan Electronic Information Technology Co ltd
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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
    • H04L43/50—Testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/10—Mapping addresses of different types
    • H04L61/103—Mapping addresses of different types across network layers, e.g. resolution of network layer into physical layer addresses or address resolution protocol [ARP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/2517—Translation of Internet protocol [IP] addresses using port numbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/09—Mapping addresses
    • H04L61/25—Mapping addresses of the same type
    • H04L61/2503—Translation of Internet protocol [IP] addresses
    • H04L61/255—Maintenance or indexing of mapping tables

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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 provides a method for testing terminal equipment based on a test switch and a test switch network, wherein the test switch is provided with an address conversion module for converting the physical address of equipment to be tested into a virtual IP address of the same network segment, an upper computer communicates and tests with a plurality of equipment to be tested through the test switch, the address conversion module replaces the destination IP address of a protocol message with an IP address in a mapping table and forwards the IP address to the equipment to be tested through a corresponding port in the mapping table, the source IP address in a message for replying the test result is replaced with the virtual IP address and forwards the virtual IP address to the upper computer, and the upper computer obtains the test result of all the equipment to be tested; compared with the prior art, the invention realizes the message interaction of one upper computer corresponding to a plurality of devices to be tested through the test switch, and simultaneously tests the plurality of devices to be tested, thereby improving the test efficiency and reducing the time cost and the labor cost.

Description

Method for testing terminal equipment based on test switch and test switch network
Technical Field
The invention relates to the technical field of terminal equipment testing, in particular to a method for testing terminal equipment based on a test switch and a test switch network.
Background
The smart city and smart family projects need a large amount of hardware terminal support tests, and the common test methods are as follows: firstly, a developer packs and uploads a modified module to a server, a new module is recombined to form a new version, then the developer sends a new version downloading path to a tester, the tester downloads new version firmware and upgrades the device to be tested to a new version, after the version upgrade is confirmed, the device to be tested is required to be reconnected, and finally, the basic function test of the new version is manually carried out.
In the prior art, an automatic test scheme of the internet of things equipment is required to rely on a tester to manually test smoking of a product, so that a great deal of manpower and time are consumed to verify the stability of the product, the professional skill level of the tester can influence the test result of the final product, and meanwhile, the tester cannot select a proper test mode according to the real running state of software, so that the software is lack of pertinence in test, the problems of reduced efficiency, inaccurate test result, long test period, consumed manpower and the like of the product are caused; and the test involves a large number of internet of things hardware terminals, and a great deal of manpower and effort are required to test each hardware device one by one or carry out factory inspection, so that the production efficiency is lowered, and the reason that each hardware device is tested one by one is that the factory internet protocol address (Internet Protocol Address, abbreviated as IP address) address of the tested device is fixed, the physical address (Media Access Control, MAC) is different, and even if a common two-layer switch is added between an upper computer and the tested terminal, the purpose of simultaneously testing a plurality of tested terminals cannot be achieved.
Disclosure of Invention
The invention provides a method for testing terminal equipment based on a test switch and a test switch network, and aims to solve the problem that in the prior art, only one-by-one test is performed on equipment to be tested, so that the test efficiency is low.
In order to achieve the above object, the present invention provides a method for testing a terminal device based on a test switch, the test switch is equipped with an address conversion module for converting physical addresses of a plurality of devices to be tested into virtual IP addresses of the same network segment, the method comprising:
step 1, an upper computer establishes connection with a plurality of devices to be tested through a test switch, and sends a protocol message to the test switch to request to acquire physical addresses of all the devices to be tested within a preset network segment range;
step 2, after the test exchanger receives the protocol message, the address conversion module carries out matching filtration on the destination IP address of the protocol message and the source IP address of the upper computer, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches the mapping table, and determines the port corresponding to the destination IP address of the protocol message in the mapping table;
step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port of the destination IP address of the protocol message in the mapping table, and forwarding the protocol message after replacing the IP address from the port of the destination IP address of the protocol message in the mapping table to the corresponding device to be tested;
Step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to the test result to the test switch;
and 5, after receiving the message of the reply test result, the test switch carries out message filtering on the message of the reply test result, searches a mapping table, replaces a source IP address in the message of the reply test result with a virtual IP address in the mapping table, forwards the message of the reply test result after replacing the IP address to an upper computer, and obtains the test results of all the devices to be tested after the upper computer receives the message of the reply test result.
Further, the test switch further comprises:
the system comprises an exchange chip, a central processing unit, a clock chip, a physical layer interface chip, an optical module, a plurality of optical ports for accessing optical fibers and a plurality of network ports for connecting equipment to be tested, wherein the equipment to be tested is connected with the network ports in a one-to-one correspondence manner;
the power supply end of the exchange chip and the power supply end of the physical layer interface chip are connected with the mains supply end, the first data transmission end of the exchange chip is connected with the first data transmission end of the central processing unit, the data transmission end of the address conversion module is connected with the data transmission end of the central processing unit, the second data transmission end of the exchange chip is connected with the input end of the physical layer interface chip, the third data transmission end of the exchange chip is connected with the input end of the optical module, the second data transmission end of the central processing unit is connected with the signal transmission end of the clock chip, the third data transmission end of the central processing unit is connected with the upper computer, the output end of the physical layer interface chip is connected with a plurality of network ports respectively, and the output end of the optical module is connected with a plurality of optical ports respectively.
Further, the test switch further comprises a serial port communication module;
the first signal end of the serial communication module is connected with the third data transmission end of the central processing unit, and the second signal end of the serial communication module is connected with the signal transmission end of the upper computer.
Further, the test switch further comprises a USB interface module;
the first data transmission end of the USB interface module is connected with the third data transmission end of the central processing unit, and the second data transmission end of the USB interface module is connected with the data transmission end of the upper computer.
Further, the test switch also comprises a dynamic random access memory and a flash memory;
the input end of the dynamic random access memory and the input end of the flash memory are connected with the third data transmission end of the central processing unit.
Further, the test switch further comprises a power module;
the input end of the power module is connected with the mains supply end, and the output end of the power module is connected with the power supply end of the exchange chip and the power supply end of the physical layer interface chip.
The address conversion module is carried in the central processing unit, and is configured to manage and configure through a command line sent by the central processing unit, and is used for designating an IP address of the upper computer, a port connected with the upper computer, a local area network for communication of the upper computer, an actual IP address of the device to be tested, a cascade port and a range of virtual addresses of the device to be tested.
The invention also provides a test switch network comprising: the system comprises an upper computer, a plurality of devices to be tested and a plurality of test switches, wherein the test switches are used for executing the method for testing the terminal device based on the test switches;
in the networking, a plurality of test switches are sequentially connected, a first data transmission end of a first test switch in the plurality of test switches is connected with a data transmission end of an upper computer, and a second data transmission end of each test switch is connected with equipment to be tested.
The invention also provides a method for testing terminal equipment based on the test switch, which is applied to the test switch network, and comprises the following steps:
step 1, an upper computer establishes connection with a plurality of devices to be tested through a plurality of test switches, and sends a protocol message to each test switch to request to acquire physical addresses of all the devices to be tested in a preset network segment range;
step 2, for each test exchanger, after receiving the protocol message, the test exchanger carries out matching filtration on the destination IP address of the protocol message and the source IP address of the upper computer through the address conversion module, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches the mapping table, if the relevant table item of the destination IP address of the protocol message is not found, sends the protocol message to other test exchangers, and if the destination IP address of the protocol message is found, determines the corresponding port of the destination IP address of the protocol message in the mapping table;
Step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port of the destination IP address of the protocol message in the mapping table, and forwarding the protocol message after replacing the IP address from the port of the destination IP address of the protocol message corresponding to the port of the protocol message in the mapping table to the corresponding device to be tested;
step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to the test result to the test switch correspondingly connected;
and 5, after each test exchanger receives the message of the reply test result, filtering the message of the reply test result, searching the mapping table, replacing the source IP address in the message of the reply test result with the virtual IP address in the mapping table, forwarding the message of the reply test result after replacing the IP address to the upper computer, and obtaining the test results of a plurality of devices to be tested after the upper computer receives the message of the reply test result.
The scheme of the invention has the following beneficial effects:
the invention designs a test switch with an address conversion module for converting the physical address of the equipment to be tested into the virtual IP address of the same network segment, the upper computer communicates and tests with a plurality of equipment to be tested through the test switch, the address conversion module matches the destination IP address of the protocol message sent by the upper computer with the source IP address of the upper computer, and searches a mapping table to determine the port corresponding to the destination IP address of the protocol message in the mapping table; replacing the destination IP address of the protocol message with an IP address corresponding to a port corresponding to the destination IP address of the protocol message in a mapping table and forwarding the IP address to the equipment to be tested through the port corresponding to the port in the mapping table; the method comprises the steps that after receiving a protocol message, a device to be tested sends a message replying to a test switch, after receiving the message replying to the test result, the test switch filters the message replying to the test result, searches a mapping table, replaces a source IP address in the message replying to the test result with a virtual IP address in the mapping table and forwards the virtual IP address to an upper computer, and after receiving the message replying to the test result, the upper computer obtains test results of all the devices to be tested; compared with the prior art, the invention realizes the message interaction of one upper computer corresponding to a plurality of devices to be tested through the test switch, and simultaneously tests the plurality of devices to be tested, thereby improving the test efficiency and reducing the time cost and the labor cost.
Other advantageous effects of the present invention will be described in detail in the detailed description section which follows.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
fig. 2 is a schematic diagram of a cascade connection according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a locked connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The invention provides a method for testing terminal equipment based on a test switch and a test switch network aiming at the existing problems.
The embodiment of the invention provides a method for testing terminal equipment based on a test switch, wherein the test switch is provided with an address conversion module for converting physical IP addresses of a plurality of devices to be tested into virtual IP addresses of the same network segment, and the method comprises the following steps:
step 1, an upper computer establishes connection with a plurality of devices to be tested through a test switch, and sends a protocol message to the test switch to request to acquire physical IP addresses of all the devices to be tested within a preset network segment range;
Step 2, after the test exchanger receives the protocol message, the address conversion module carries out matching filtration on the destination IP address of the protocol message and the source IP address of the upper computer, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches the mapping table, and determines the port corresponding to the destination IP address of the protocol message in the mapping table;
step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port of the destination IP address of the protocol message in the mapping table, and forwarding the protocol message after replacing the IP address from the port of the destination IP address of the protocol message in the mapping table to the corresponding device to be tested;
step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to the test result to the test switch;
and 5, after receiving the message of the reply test result, the test switch carries out message filtering on the message of the reply test result, searches a mapping table, replaces a source IP address in the message of the reply test result with a virtual IP address in the mapping table, forwards the message of the reply test result after replacing the IP address to an upper computer, and obtains the test results of all the devices to be tested after the upper computer receives the message of the reply test result.
As shown in fig. 1, specifically, the test switch further includes:
the system comprises a switching chip, a central processing unit, a clock chip, a physical layer interface chip, an optical module, a plurality of optical ports for accessing optical fibers and a plurality of network ports for accessing equipment to be tested (Device Under Test, DUT), wherein the equipment to be tested is connected with the network ports in a one-to-one correspondence manner;
the power supply end of the exchange chip and the power supply end of the physical layer interface chip are connected with the mains supply end, the first data transmission end of the exchange chip is connected with the first data transmission end of the central processing unit, the data transmission end of the address conversion module is connected with the data transmission end of the central processing unit, the second data transmission end of the exchange chip is connected with the input end of the physical layer interface chip, the third data transmission end of the exchange chip is connected with the input end of the optical module, the second data transmission end of the central processing unit is connected with the signal transmission end of the clock chip, the third data transmission end of the central processing unit is connected with the upper computer, the output end of the physical layer interface chip is connected with a plurality of network ports respectively, and the output end of the optical module is connected with a plurality of optical ports respectively.
Most preferably, the test switch further comprises a power module;
the input end of the power module is connected with the mains supply end, and the output end of the power module is connected with the power supply end of the exchange chip and the power supply end of the physical layer interface chip.
In the embodiment of the invention, a power battery, a voltage stabilizing tube and a power management unit are integrated in the power module and are used for providing stable power for the exchange chip and the physical layer interface chip; the exchange chip adopts an RTL93xx series exchange chip; the central processing unit adopts integration (Central Processing Unit, CPU) and also can adopt built-in CPU; the optical module adopts (Small Form Pluggable, SFP) optical module, and the network port adopts RG45.
Most preferably, the test switch further comprises a serial port communication module;
the first signal end of the serial communication module is connected with the third data transmission end of the central processing unit, and the second signal end of the serial communication module is connected with the signal transmission end of the upper computer; in the embodiment of the invention, the serial port communication module adopts an asynchronous transceiver Transmitter (Universal Asynchronous Receiver/Transmitter, UART).
Most preferably, the test switch further comprises a USB interface module;
the first data transmission end of the USB interface module is connected with the third data transmission end of the central processing unit, and the second data transmission end of the USB interface module is connected with the data transmission end of the upper computer.
Most preferably, the test switch further comprises a dynamic random access memory (Double Data Rate Synchronous Dynamic Random Access Memory, DDR SDRAM, DDR for short) and a FLASH memory FLASH;
The input end of the dynamic random access memory and the input end of the flash memory are connected with the third data transmission end of the central processing unit.
Specifically, the address conversion module is mounted in the central processing unit, and the address conversion module is configured by management through a command line sent by the central processing unit, and is used for designating an IP address of the upper computer, a port connected with the upper computer, a local area network for communication of the upper computer, an actual IP address of the device to be tested, a cascade port and a range of virtual addresses of the device to be tested.
It should be noted that, the address conversion module provided by the embodiment of the invention is not limited by the chip scheme, and can be transplanted into any chip of the test switch, or can be transplanted into other chips capable of carrying software algorithms and loaded into the test switch, but the chips need to be connected with the central processing unit to realize data transmission.
The test switch provided by the embodiment of the invention needs to support web configuration, carries out configuration record on the physical address of the equipment to be tested, and provides a port and virtual IP address mapping table based on the test switch; the mapping table establishes a corresponding relation among the port number, the port type and the mapping IP address through manual configuration, and is used for replacing the IP address when the message is forwarded.
Specifically, the address translation module defines the ports of the test switch as three types:
the port of the equipment to be tested is used for connecting the equipment to be tested, the test switch receives the message of which the source/destination IP address is the address of the upper computer from the port, the mapping table is checked, the IP address mapped by the message is changed, and the test switch defaults that all network ports are the ports of the equipment to be tested;
the cascade port is used for cascading the test switch, does not process the message and only forwards the message;
and the upper computer port is used for being connected with an upper computer for obtaining a test result, and the test switch checks a mapping table for a message with the received source IP address as the upper computer address and changes the IP address mapped by the message.
Specifically, forwarding logic of the test switch provided by the embodiment of the invention is as follows:
and the test switch receives the message with the source IP address of the upper computer, searches the mapping table, finds out the corresponding port, forwards the message from the corresponding port, and otherwise, sends the message to the cascade port, and discards the message when the cascade port does not exist.
Specifically, each device (e.g., device under test, host computer) connected to the test switch is configured; when the port of the test switch is configured to be connected with the device to be tested, the test switch replaces the source IP address of the received data packet from the device to be tested with the virtual IP address in the mapping table; when the port of the test switch is configured to be connected with the upper computer, the test switch replaces the destination IP address of the protocol message received from the upper computer with the physical address of the equipment to be tested, and finds the corresponding test switch port through searching the mapping table, and forwards the protocol message to the corresponding equipment to be tested.
The data uplink direction of the test switch provided by the embodiment of the invention is as follows: when the port equipment of the test switch is provided with the equipment to be tested, an upper computer and the cascade port, data from the cascade port can be forwarded to the upper computer port; the data downlink direction is: when the port of the test switch is provided with the device to be tested, the upper computer and the cascade port, the data from the upper computer can be forwarded to the cascade port.
The test switch provided by the embodiment of the invention can be used as a common switch or a test tool for testing, and when the test switch is used as the test tool, the address conversion module is started by default; when the switch is used as a common switch, the address conversion module can be closed through commands of an upper computer or web internet configuration.
Because the IP address of each device under test is the same during production test, the media access control (Media Access Control, MAC) address is different, and the two-layer forwarding principle of the switch is cited, when the device under test sends out (Address Resolution Protocol, ARP) address resolution protocol request message, each device under test replies, the ARP table learned on the upper computer cannot determine which device under test, the IP address and the MAC address in the ARP table are in one-to-one correspondence, and the situation that one IP address corresponds to multiple MAC addresses will occur, which results in that the MAC address in the ARP table is always changed, and the upper computer cannot communicate with each device under test at the same time, so that an address conversion module needs to be turned on to realize that one upper computer communicates with multiple devices under test at the same time.
Specifically, the working principle of the test switch provided by the embodiment of the invention is as follows:
the upper computer sends a control command to control the central processor to start an address conversion module, the sent protocol message is input into the address conversion module in the central processor, the address conversion module carries out matching filtration on a destination IP address of the protocol message and a source IP address of the upper computer, when the destination IP address of the protocol message is the source IP address of the upper computer, a mapping table is searched, the destination IP address of the protocol message is replaced by the IP address in the mapping table, and the protocol message after replacing the IP address is forwarded to the equipment to be tested from a port in the mapping table through a network port;
after receiving the message, the device to be tested sends the message of the reply test result to the exchange chip, the exchange chip sends the message of the reply test result to the central processing unit, the message of the reply test result is filtered through the address conversion module, the mapping table is searched, the source IP address in the message of the reply test result is replaced by the virtual IP address in the mapping table, and the message of the reply test result after replacing the IP address is forwarded to the upper computer through the serial port communication module; therefore, the upper computer does not need to pay attention to the actual IP address of the equipment to be tested, when the upper computer communicates with a plurality of equipment to be tested, the IP address which is actually communicated with the upper computer is a virtual IP address configured by the test switch, and the communication equipment is the actual equipment to be tested.
The test switch provided by the embodiment of the invention is also provided with an expansion port, which is used for cascading a plurality of test switches to meet the requirement that more devices to be tested are tested simultaneously, as shown in fig. 2.
The embodiment of the invention also provides a test switch network, which comprises an upper computer, a plurality of devices to be tested and a plurality of test switches, wherein the test switches are used for executing the method for testing the terminal device based on the test switches;
in the networking, a plurality of test switches are connected in sequence, a connection interface between two test switches is a cascade port and is used for forwarding protocol messages, a first data transmission end of a first test switch in the plurality of test switches is connected with a data transmission end of an upper computer, and a second data transmission end of each test switch is connected with equipment to be tested.
In the embodiment of the invention, the networking only shows the situation of 3 devices to be tested, more devices to be tested are needed, and virtual IP addresses are needed to be analogized in sequence;
an upper computer port 1 is configured in a first test switch SW1, the source IP address of the upper computer is 172.31.70.71, a port 4 is a cascade port, and ports 2 and 3 are respectively connected with a device 1 to be tested and a device 2 to be tested;
Configuring the virtual IP address of the device to be tested 1 as 172.31.70.1 binding number 2 port, and configuring the virtual IP address of the device to be tested 2 as 172.31.70.2 binding number 3 port;
port 1 is configured on the test switch SW2 as an upper computer port, port 2 is connected to the device under test 3, and the virtual IP address of the device under test 2 is configured as 172.31.70.3.
The embodiment of the invention also provides a method for testing terminal equipment based on the test switch, which is applied to the test switch network, and comprises the following steps:
step 1, the upper computer establishes connection with a plurality of devices to be tested through a plurality of test switches, and sends a protocol message to each test switch to request to acquire physical addresses of all the devices to be tested in a preset network segment range;
step 2, for each test switch, after receiving the protocol message, the test switch performs matching filtering on a destination IP address of the protocol message and a source IP address of the upper computer through the address conversion module, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches a mapping table, if a relevant table entry of the destination IP address of the protocol message is not found, sends the protocol message to other test switches, and if the destination IP address of the protocol message is found, determines a port corresponding to the destination IP address of the protocol message in the mapping table;
Step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port corresponding to the destination IP address of the protocol message in the mapping table, and forwarding the protocol message with the replaced IP address from the port corresponding to the destination IP address of the protocol message in the mapping table to the corresponding device to be tested;
step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to a test result to a test switch correspondingly connected;
and 5, after each test exchanger receives the message of the reply test result, filtering the message of the reply test result, searching a mapping table, replacing a source IP address in the message of the reply test result with a virtual IP address in the mapping table, forwarding the message of the reply test result after replacing the IP address to the upper computer, and obtaining test results of a plurality of devices to be tested after the upper computer receives the message of the reply test result.
Example 1
In this embodiment 1, a test switch is used, and the method includes:
step 1, an upper computer establishes connection with 2 devices to be tested through a test switch, and sends a protocol message to the test switch to request to acquire physical addresses of all the devices to be tested within the range of 172.31.70.1-172.31.70.64 of a preset network segment; if the first request is just 172.31.70.1, the physical address of the corresponding device to be tested, and the source IP address of the message is src_ip:172.31.70.71, dst_ip:172.31.70.1;
step 2, after the test exchanger receives the protocol message, the address conversion module carries out matching filtration on the destination IP address of the protocol message and the source IP address of the upper computer, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches the mapping table, and determines the port 2 corresponding to the destination IP address of the protocol message in the mapping table;
step 3, replacing the destination IP address of the protocol message with the IP address 172.31.70.51 corresponding to the port corresponding to the destination IP address of the protocol message in the mapping table, and forwarding the protocol message with the replaced IP address from the port 2 corresponding to the destination IP address of the protocol message in the mapping table to the corresponding device to be tested; the source IP address of the message is src_ip:172.31.70.71, dst_ip:172.31.70.51;
Step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device itself, wherein the source IP address of the message is src_IP:172.31.70.51, dst_ip:172.31.70.71; when the IP address of the protocol message is consistent with the IP address of the equipment, each equipment to be tested respectively sends a message replying to the test result to the test switch;
and 5, after receiving the message replying to the test result, the test switch carries out message filtering on the message replying to the test result, searches a mapping table, and replaces the source IP address in the message replying to the test result with a virtual IP address in the mapping table as follows: 172.31.70.1, forwarding the message of the reply test result after replacing the IP address to an upper computer, wherein the source IP address of the message is src_IP:172.31.70.1, dst_ip:172.31.70.71, mac1, and after receiving the message for replying the test result, the upper computer obtains the physical address of 172.31.70.1, and obtains the test results of all the devices to be tested.
Specifically, the principle of substitution of IP addresses is: the IP address is converted according to the mapping table generated by the static configuration or the dynamic configuration of the test switch, the source IP address of the equipment to be tested is searched in the code to be replaced by the virtual IP address, the (Cyclic Redundancy Check, CRC) cyclic redundancy check code of the message is updated, and then the cyclic redundancy check code is sent to the upper computer through the upper computer port of the test switch.
The mapping table of the test switch is shown in table 1:
TABLE 1
Example 2
In this embodiment 2, 2 test switches SW1 and SW2 are adopted, and the test method includes:
step 1, an upper computer establishes connection with 3 devices to be tested through 2 test switches, and sends a protocol message to each test switch to request to acquire physical addresses of all the devices to be tested within the range of 172.31.70.1-172.31.70.64 of a preset network segment; if, after the first request, the request is just 172.31.70.3, and the physical address of the DUT3 corresponds to the source IP address of the message: src_ip:172.31.70.71, dst_ip:172.31.70.3;
step 2, for each test switch, after the test switch SW1 receives the protocol message, performing matching filtering on the destination IP address of the protocol message and the source IP address of the upper computer through the address conversion module, determining that the destination IP address of the protocol message is the source IP address of the upper computer, searching the mapping table, and if the relevant table item of the destination IP address of the protocol message is not found, sending the protocol message to other test switches SW2, where the source IP address of the message is: src_ip:172.31.70.71, dst_ip:172.31.70.3, if the destination IP address of the protocol packet is found, determining the port 2 corresponding to the destination IP address of the protocol packet in the mapping table, where the IP address is: 172.31.70.3;
Step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port corresponding to the destination IP address of the protocol message in the mapping table, and forwarding the protocol message after replacing the IP address from the port 2 corresponding to the destination IP address of the protocol message in the mapping table to the corresponding device to be tested; the source IP address of the message is src_ip:172.31.70.71, dst_ip:172.31.70.51;
step 4, after all the devices 3 to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device itself, and when the IP address of the protocol message is consistent with the IP address of the device itself, the source IP address of the message is src_IP:172.31.70.51, dst_ip:172.31.70.71, mac3, the device 3 to be tested sends the message replying to the test result to the test switch correspondingly connected; the source IP address of the message is src_IP 172.31.70.3 Dst_IP:172.31.70.71;
and 5, after each test exchanger receives the message of the reply test result, filtering the message of the reply test result, searching the mapping table, replacing the source IP address in the message of the reply test result with the virtual IP address in the mapping table, forwarding the message of the reply test result after replacing the IP address to the upper computer, and obtaining the physical address of 172.31.70.3 after the upper computer receives the message of the reply test result, so as to obtain the test results of a plurality of devices to be tested.
The mapping table of the test switch SW1 is shown in the above table 1, and the mapping table of the test switch SW2 is shown in the following table 2:
TABLE 2
Example 3
When a batch of devices to be tested is tested, one device to be tested 4 is replaced, and the following steps are:
the test switch SW2 triggers the test switch SW2 to actively send an ARP protocol request message with a target IP address being the actual IP address of the device 4 to be tested, a source address being the IP address of the upper computer and an IP address being src_IP by the port link up time state: 172.31.70.71, dst_ip:172.31.70.51;
after receiving the request, the device 4 to be tested responds to ARP, and responds the physical address of the device to be tested to the test switch SW2, where the source IP address of the message is: src_IP 172.31.70.51 Dst_IP:172.31.70.71,MACs4;
when the test switch SW2 receives the message and determines that the destination IP address is the IP address of the upper computer, it searches the mapping table, finds that the virtual IP address of the message port 2 is 172.31.70.3, replaces the source IP address with the virtual IP address, and sends the message to the upper computer port 1, where the source IP address of the message is: src_ip:172.31.70.3 Dst_ip:172.31.70.71;
when the test switch SW1 receives the message and determines that the target IP address is the IP address of the upper computer, the mapping table is searched and directly sent to the upper computer port, and the source IP address of the message is as follows: src_ip:172.31.70.3 Dst_ip:172.31.70.71;
And the upper computer receives the ARP response, acquires the new physical address of 172.31.70.3 and records the new physical address.
Example 4
The test switch provided in this embodiment 4 dynamically generates a mapping table through an address translation module to reduce configuration difficulty, and the process is as follows:
configuring an upper computer port at a test switch SW1, wherein the source IP address of the upper computer is 172.31.70.71, the port 4 is used as a cascade port, and the port 2 and the port 3 are respectively connected with a device 1 to be tested and a device 2 to be tested;
the upper computer sends out ARP protocol message to request to obtain the physical address of the set network segment 172.31.70.1-172.31.70.64, for example: the first request is just 172.31.70.1, and corresponds to the physical address of the device 1 to be tested, and the source IP address of the message is src_ip:172.31.70.71, dst_ip:172.31.70.1;
the test switch SW1 receives the message, determines that the destination IP address of the message is the source IP address of the upper computer, at the moment, no mapping table exists, broadcasts the message to all link up ports through the address conversion module, and when the equipment to be tested receives the corresponding ARP protocol message, the equipment to be tested returns a correct ARP response to the test switch SW1, wherein the source IP address of the message is: src_ip:172.31.70.51, dst_ip:172.31.70.71;
After receiving the ARP response message from the downlink direction, the test switch finds that the destination IP address is the source IP address of the upper computer, records the source IP address and generates a mapping table of the port and the IP address according to a certain rule, for example, the ARP message enters from a port X, the virtual IP address is 172.31.70.X, the value of X is generated according to the port X, for example, X- (255- (x+p) &0 xff), and if the port of link up hangs down the device to be tested, the corresponding ARP response is received, and the corresponding port mapping table can be dynamically generated;
after the ARP response message returned by the equipment 1 to be tested generates a port mapping table, the address conversion module replaces the source IP address with the virtual generated IP address according to the software rule, and then the virtual generated IP address is sent to an upper computer from an upper computer port of the test switch;
after the upper computer receives the message, the physical address of the device 1 to be tested can be recorded, the IP address of the device 1 to be tested is considered as the IP address in the mapping table, the subsequent upper computer and the device 1 to be tested can directly send the destination IP address as the IP address in the mapping table, and the physical address is the real physical address of the device to be tested, which is acquired by the protocol request.
The embodiment of the invention designs a test switch with an address conversion module for converting the physical address of the equipment to be tested into the virtual IP address of the same network segment, the upper computer communicates and tests with a plurality of equipment to be tested through the test switch, the address conversion module matches the destination IP address of the protocol message sent by the upper computer with the source IP address of the upper computer, and searches a mapping table to determine the port corresponding to the destination IP address of the protocol message in the mapping table; replacing the destination IP address of the protocol message with an IP address corresponding to a port corresponding to the destination IP address of the protocol message in a mapping table and forwarding the IP address to the equipment to be tested through the port corresponding to the port in the mapping table; the method comprises the steps that after receiving a protocol message, a device to be tested sends a message replying to a test switch, after receiving the message replying to the test result, the test switch filters the message replying to the test result, searches a mapping table, replaces a source IP address in the message replying to the test result with a virtual IP address in the mapping table and forwards the virtual IP address to an upper computer, and after receiving the message replying to the test result, the upper computer obtains test results of all the devices to be tested; compared with the prior art, the invention realizes the message interaction of one upper computer corresponding to a plurality of devices to be tested through the test switch, and simultaneously tests the plurality of devices to be tested, thereby improving the test efficiency and reducing the time cost and the labor cost.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims (9)

1. A method for testing terminal equipment based on a test switch, wherein the test switch is mounted with an address conversion module for converting physical addresses of a plurality of devices to be tested into virtual IP addresses of the same network segment, the method comprising:
step 1, an upper computer establishes connection with a plurality of devices to be tested through the test switch, and sends a protocol message to the test switch to request to acquire physical addresses of all the devices to be tested within a preset network segment range;
step 2, after the test switch receives the protocol message, the address conversion module performs matching filtering on a destination IP address of the protocol message and a source IP address of the upper computer, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches a mapping table, and determines a port corresponding to the destination IP address of the protocol message in the mapping table;
Step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port of the destination IP address of the protocol message in the mapping table, and forwarding the protocol message with the replaced IP address from the port of the destination IP address of the protocol message in the mapping table to the corresponding device to be tested;
step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to a test result to the test switch;
and 5, after receiving the message of the reply test result, the test switch carries out message filtering on the message of the reply test result, searches a mapping table, replaces a source IP address in the message of the reply test result with a virtual IP address in the mapping table, forwards the message of the reply test result after replacing the IP address to the upper computer, and obtains the test results of all the devices to be tested after receiving the message of the reply test result.
2. The method of testing a terminal device based on a test switch of claim 1, wherein the test switch further comprises:
The device comprises an exchange chip, a central processing unit, a clock chip, a physical layer interface chip, an optical module, a plurality of optical ports for accessing optical fibers and a plurality of network ports for connecting the device to be tested, wherein the device to be tested is connected with the network ports in a one-to-one correspondence manner;
the power supply end of the exchange chip and the power supply end of the physical layer interface chip are connected with a mains supply end, a first data transmission end of the exchange chip is connected with a first data transmission end of the central processing unit, a data transmission end of the address conversion module is connected with a data transmission end of the central processing unit, a second data transmission end of the exchange chip is connected with an input end of the physical layer interface chip, a third data transmission end of the exchange chip is connected with an input end of the optical module, a second data transmission end of the central processing unit is connected with a signal transmission end of the clock chip, a third data transmission end of the central processing unit is connected with an upper computer, an output end of the physical layer interface chip is connected with a plurality of network ports respectively, and an output end of the optical module is connected with a plurality of optical ports respectively.
3. The method for testing a terminal device based on a test switch according to claim 2, wherein the test switch further comprises a serial port communication module;
The first signal end of the serial communication module is connected with the third data transmission end of the central processing unit, and the second signal end of the serial communication module is connected with the signal transmission end of the upper computer.
4. A method of testing a terminal device based on a test switch as claimed in claim 3, wherein the test switch further comprises a USB interface module;
the first data transmission end of the USB interface module is connected with the third data transmission end of the central processing unit, and the second data transmission end of the USB interface module is connected with the data transmission end of the upper computer.
5. The method for testing a terminal device based on a test switch of claim 4, wherein the test switch further comprises a dynamic random access memory and a flash memory;
the input end of the dynamic random access memory and the input end of the flash memory are connected with the third data transmission end of the central processing unit.
6. The method of testing a terminal device based on a test switch of claim 5, wherein the test switch further comprises a power module;
the input end of the power supply module is connected with the mains supply end, and the output end of the power supply module is connected with the power supply end of the exchange chip and the power supply end of the physical layer interface chip.
7. The method for testing terminal equipment based on the test switch according to claim 4, wherein the address conversion module is carried in the central processing unit, and the address conversion module performs management configuration through a command line sent by the central processing unit, and is used for specifying an IP address of the upper computer, a port connected with the upper computer, a local area network in which the upper computer communicates, an actual IP address of the equipment to be tested, a cascade port, and a range of virtual addresses of the equipment to be tested.
8. A test switch fabric, the test switch fabric comprising: a host computer, a plurality of devices under test, a plurality of test switches for performing the method for testing terminal devices based on the test switches according to any one of claims 1 to 7,
in the networking, a plurality of test switches are sequentially connected, a first data transmission end of a first test switch in the plurality of test switches is connected with a data transmission end of the upper computer, and a second data transmission end of each test switch is connected with equipment to be tested.
9. A method for testing a terminal device based on a test switch, applied to the test switch network of claim 8, the method comprising:
Step 1, the upper computer establishes connection with a plurality of devices to be tested through a plurality of test switches, and sends a protocol message to each test switch to request to acquire physical addresses of all the devices to be tested in a preset network segment range;
step 2, for each test switch, after receiving the protocol message, the test switch performs matching filtering on a destination IP address of the protocol message and a source IP address of the upper computer through the address conversion module, determines that the destination IP address of the protocol message is the source IP address of the upper computer, searches a mapping table, if a relevant table entry of the destination IP address of the protocol message is not found, sends the protocol message to other test switches, and if the destination IP address of the protocol message is found, determines a port corresponding to the destination IP address of the protocol message in the mapping table;
step 3, replacing the destination IP address of the protocol message with the IP address corresponding to the port corresponding to the destination IP address of the protocol message in the mapping table, and forwarding the protocol message with the replaced IP address from the port corresponding to the destination IP address of the protocol message in the mapping table to the corresponding device to be tested;
Step 4, after all the devices to be tested receive the protocol message, determining whether the IP address of the protocol message is consistent with the IP address of the device, and when the IP address of the protocol message is consistent with the IP address of the device, each device to be tested respectively sends a message replying to a test result to a test switch correspondingly connected;
and 5, after each test exchanger receives the message of the reply test result, filtering the message of the reply test result, searching a mapping table, replacing a source IP address in the message of the reply test result with a virtual IP address in the mapping table, forwarding the message of the reply test result after replacing the IP address to the upper computer, and obtaining test results of a plurality of devices to be tested after the upper computer receives the message of the reply test result.
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