CN113726738A

CN113726738A - Method for acquiring physical position information of tested equipment, network equipment and storage medium

Info

Publication number: CN113726738A
Application number: CN202110846913.5A
Authority: CN
Inventors: 马俊凯; 姚志伟
Original assignee: New H3C Technologies Co Ltd Hefei Branch
Current assignee: New H3C Technologies Co Ltd Hefei Branch
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-11-30
Anticipated expiration: 2041-07-26
Also published as: CN113726738B

Abstract

The application provides a method for acquiring physical position information of tested equipment, which comprises the steps of acquiring a DHCP forwarding request message of a network switching equipment port field carried by network switching equipment, wherein the network switching equipment is connected with the tested equipment through a network switching equipment port; analyzing the DHCP forwarding request message to acquire the port information of the network switching equipment; adding the acquired port information of the network switching equipment into a physical position field of a DHCP response IP allocation message, wherein the DHCP response IP allocation message responds to a DHCP request message sent by the tested equipment, and the DHCP request message carries the physical position field; and sending a DHCP response IP allocation message to the network conversion equipment. According to the embodiment of the application, the tested equipment acquires the physical position information while acquiring the IP, and the DHCP message is adopted for acquiring, so that the interfaces and remote interaction are reduced, and the real-time performance is good.

Description

Method for acquiring physical position information of tested equipment, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for acquiring physical location information of a device under test, a network device, and a storage medium.

Background

In a production test network, a device under test generally needs to acquire a current test station to further acquire test parameters and standards related to the station. The same tested device has different test programs and test standards on different test stations, for example, the station A belongs to a formal mass production test procedure I, and the station B belongs to a verification test procedure II. Therefore, a method for managing and querying the physical location of a device in a network is needed.

According to the knowledge of the inventor, the DHCP interactive message in the network is monitored based on the DHCP protocol, the position is positioned by adding position information in the DHCP message, the binding relation between the IP in the interactive message and the position of the physical port is analyzed by the deployed service in the DHCP server, the tested equipment below calls the service in a remote login mode or an API (application program interface) mode, and finally the binding relation is obtained. In the method, the binding relationship between the IP and the physical port is stored at the DHCP server, the tested equipment can be obtained only by remote login or interface calling, and a certain real-time problem exists because service needs to be deployed at the DHCP server end to analyze the binding relationship in the message regularly.

Disclosure of Invention

In order to overcome the problems in the related art, the application provides a method for acquiring the physical position information of the tested device, network equipment and a storage medium.

According to a first aspect of the embodiments of the present application, there is provided a method for acquiring physical location information of a device under test,

acquiring a DHCP forwarding request message of a network switching equipment port field carried by network switching equipment, wherein the network switching equipment is connected with tested equipment through a network switching equipment port;

analyzing the DHCP forwarding request message to acquire the port information of the network switching equipment;

adding the acquired port information of the network switching equipment into a physical position field of a DHCP response IP allocation message, wherein the DHCP response IP allocation message responds to a DHCP request message sent by the tested equipment, and the DHCP request message carries the physical position field;

and sending a DHCP response IP allocation message to the network conversion equipment.

Preferably, the network switching device is configured with a DHCP Snooping function module, and the network switching device starts the DHCP Snooping function module when receiving a DHCP request message sent by the device to be tested.

Preferably, the device under test is connected to the network switching device through a network switching device port.

Preferably, all the devices under test are set to DHCP auto-acquire IP mode.

The second aspect provides a method for acquiring the physical position information of the device under test, which is applied to the network conversion device,

acquiring a DHCP request message sent by the tested equipment, wherein the DHCP request message carries a physical position field;

sending a DHCP forwarding request message to a DHCP server, wherein the DHCP forwarding request message carries a port field of the network switching equipment;

receiving a DHCP response IP allocation message sent by a DHCP server, wherein the DHCP response IP allocation message is in response to a DHCP request message of the tested equipment, and the DHCP response IP allocation message carries a physical position field which is added with port information of the network switching equipment;

and sending a DHCP response IP forwarding message to the tested equipment, wherein the DHCP response IP forwarding message comprises a physical position field, and the physical position field is added with the port information of the network switching equipment.

Preferably, all the devices under test are set to DHCP auto-acquire IP mode.

A third aspect provides a network device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the above method for acquiring physical location information of a device under test.

A fourth aspect provides a storage medium having stored thereon computer program instructions for implementing the above-described method of acquiring physical location information of a device under test when executed by a processor.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

according to the embodiment of the application, the tested equipment acquires the physical position information while acquiring the IP, and the DHCP message is adopted for acquiring, so that the interfaces and remote interaction are reduced, and the real-time performance is good.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments consistent with the present application and together with the application, serve to explain the principles of the application.

FIG. 1 is a flow chart of an interaction according to an embodiment of the present application;

FIG. 2 is a flow chart of an embodiment of the present application;

FIG. 3 is a flowchart of an embodiment of the present application;

fig. 4 is a hardware block diagram of a network device according to the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein is meant to encompass any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Depending on the context, moreover, the word "if" as used may be interpreted as "at … …" or "when … …" or "in response to a determination".

The application provides a method for acquiring physical position information of tested equipment, which is applied to a networking system consisting of the tested equipment, network switching equipment and a DHCP server, wherein the tested equipment is connected with a port of the network switching equipment. Referring to fig. 1, one embodiment of the method comprises:

0001: and the tested equipment initiates a DHCP request message, and the DHCP request message carries a physical position field.

After networking is connected, all devices in the network, particularly, the IP acquisition mode of the device to be tested needs to be set as the DHCP automatic acquisition IP mode.

The DHCP message format in the embodiment of the present application is as shown in table 1:

op	yiaddr	giaddr	Option(62)
				1	0	192.168.0.1	port number:

TABLE 1

op: the type of operation of the message. The value is 1: a request message; the value is 2: and responding to the message.

yiaddr: the DHCP server assigns an IP address to the client. Only the offer and ACK messages sent by the DHCP server are shown, and the other messages are shown as 0.

giaddr: the forwarding agent (gateway) IP address is the IP address of the first DHCP relay after the client sends the request message, and is 0 if it does not pass through the DHCP relay.

option: an option is selectable.

The actual length of the DHCP message format is greater than that shown in table 1, and the message format with little relevance to the present application is not shown in table 1.

0003: and the network switching equipment forwards the DHCP forwarding request message to a DHCP server, which carries a port field of the network switching equipment.

After the DHCP forwarding request message encapsulates the DHCP request message and adds the DHCP request message into the message, a conversion port field of the network equipment is added as an extension field.

Therefore, the DHCP forwarding request message format adds a message header and an extension field on the basis of the table 1.

The port number of the port to which the device under test and the network switching device are connected, for example, port 1(port 1), is added to the extension field portion.

0005: and the DHCP server acquires the DHCP forwarding request message and analyzes the port information of the network switching equipment in the forwarding request message.

The DPCH service splits the DHCP forwarding request message, analyzes the port information of the network switching equipment, and acquires the DHCP request message therein.

The network switch device port to which 192.168.1.0.1, for example, is derived is port 1(port 1).

0007: and the DHCP server responds to the DHCP request message and adds the acquired port information of the network switching equipment into a response IP distribution message corresponding to the request message.

And the DHCP response IP allocation message is a response message of the DHCP request message, the DHCP server puts the allocated IP into the DHCP response IP allocation message and adds the acquired corresponding network switching equipment port information into a physical position field of the response IP allocation message.

The DHCP response IP assignment message is shown in table 2.

op	yiaddr	giaddr	Option(62)
				2	192.168.0.10	192.168.0.1	port number：port 1

TABLE 2

0009: and the DHCP server sends the DHCP response IP allocation message to the network switching equipment.

0011: and the network conversion equipment encapsulates the DHCP response IP allocation message and transmits the message to the tested equipment by using the DHCP response IP.

0013: and the tested device analyzes and acquires the allocated IP and the physical position information.

For example:

tested device	IP	Physical location
			1	192.168.0.10	port1

On the basis of the first embodiment, in order to avoid that the IP acquisition is affected by an illegal DHCP server, a DHCP Snooping function module may be configured on the network switching device. The access of an illegal DHCP server is effectively filtered, and the physical position can be accessed to the whole starting process of the tested equipment, namely, the IP of the tested equipment is obtained. After the network conversion equipment receives the DHCP request message, the network conversion equipment responds to the request message and starts a DHCP Snooping function module. The network switching device here may be a switch, as an example.

Here, it is needed to explain DHCP Snooping, which is a security feature function of DHCP and is used to shield illegal DHCP servers in the access network. That is, after the DHCP Snooping function is started, the client in the network only obtains the IP address from the DHCP server designated by the administrator. Because the DHCP message lacks an authentication mechanism, if an illegal DHCP server exists in the network, an administrator cannot ensure that the client obtains a legal address from the DHCP server specified by the administrator, and the client may obtain wrong configuration information such as an IP address from the illegal DHCP server, so that the client cannot normally use the network. After the DHCP Snooping function is started, the port on the switch must be set to be in a trusted (Trust) state and an untrusted (Untrust) state, and the switch only forwards a DHCP OFFER/ACK/NAK message of the trusted port, so that the aim of blocking an illegal DHCP server is fulfilled. It is generally proposed to set the port connecting the DHCP server as a trusted port and the other ports as untrusted ports.

The second embodiment of the present application provides a method for acquiring physical location information of a device under test, as shown in fig. 2, which is applied to a DHCP server, and includes:

As a preferred embodiment, the network switching device is configured with a DHCP Snooping function module, and when the network switching device receives a DHCP request message sent by the device to be tested, the network switching device starts the DHCP Snooping function module.

The tested device is connected to the network conversion device through the network conversion device port.

As a preferred embodiment, all devices under test are set to DHCP auto-acquire IP mode.

The third embodiment of the present application provides a method for acquiring physical location information of a device under test, as shown in fig. 3, which is applied to a network switching device, and includes:

The application also provides a network device, which includes a memory, a processor and a computer program stored in the memory and capable of running on the processor, and when the processor executes the program, the method for acquiring the physical location information of the device under test according to the above embodiments is performed, as shown in fig. 4.

The application also provides a storage medium, on which computer program instructions are stored, and the program instructions are executed by a processor to obtain the physical position information of the device under test according to the above embodiments.

The machine-readable storage medium may be any electronic, magnetic, optical, or other physical storage device that can contain or store information such as executable instructions, data, and the like. For example, the machine-readable storage medium may be: a RAM (random Access Memory), a volatile Memory, a non-volatile Memory, a flash Memory, a storage drive (e.g., a hard drive), a solid state drive, any type of storage disk (e.g., an optical disk, a dvd, etc.), or similar storage medium, or a combination thereof.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. A typical implementation device is a computer, which may take the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email messaging device, game console, tablet computer, wearable device, or a combination of any of these devices.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Furthermore, these computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. The method for acquiring the physical position information of the tested equipment is applied to a DHCP server and is characterized in that a DHCP forwarding request message of a network switching equipment port field carried by network switching equipment is acquired, wherein the network switching equipment is connected with the tested equipment through a network switching equipment port;

and sending the DHCP response IP allocation message to the network conversion equipment.

2. The method for acquiring the physical location information of the device under test according to claim 1, wherein a DHCP Snooping function module is configured on the network switching device, and the network switching device starts the DHCP Snooping function module when receiving a DHCP request message sent by the device under test.

3. The method of claim 1, wherein the device under test is connected to the network switching device through the network switching device port.

4. The method of claim 1, wherein all devices under test are set to DHCP auto-acquire IP mode.

5. The method for acquiring the physical position information of the tested equipment is applied to the network conversion equipment and is characterized by acquiring a DHCP request message sent by the tested equipment, wherein the DHCP request message carries a physical position field;

sending a DHCP forwarding request message to a DHCP server, wherein the DHCP forwarding request message carries a port field of network switching equipment;

receiving a DHCP response IP allocation message sent by the DHCP server, wherein the DHCP response IP allocation message is in response to the DHCP request message of the tested equipment, the DHCP response IP allocation message carries the physical location field, and the physical location field is added with the port information of the network switching equipment;

and sending a DHCP response IP forwarding message to the tested equipment, wherein the DHCP response IP forwarding message comprises the physical position field, and the physical position field is added with the port information of the network switching equipment.

6. The method for acquiring the physical location information of the device under test according to claim 5, wherein a DHCP Snooping function module is configured on the network switching device, and the network switching device starts the DHCP Snooping function module when receiving a DHCP request message sent by the device under test.

7. The method of claim 5, wherein the device under test is connected to the network switching device through the network switching device port.

8. The method of claim 5, wherein all the devices under test are set to DHCP auto-acquisition IP mode.

9. Network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor executes the program to perform the method of obtaining information on the physical location of a device under test according to any of claims 1 to 4.

10. Storage medium having stored thereon computer program instructions, characterized in that the program instructions, when executed by a processor, are adapted to implement the method of acquiring physical position information of a device under test as claimed in any of claims 1 to 4.