CN108848200A - Equipment adding method, device, equipment and medium in a kind of local area network - Google Patents

Abstract

The invention discloses a device adding method, device, device and medium in a local area network. The steps of the method include: when a new device is connected to the target local area network, sending ARP to each IP address recorded in a preset address table through the new device Request; generate an ARP table according to the response information of each ARP request; select the target available IP address from the available IP addresses to configure it as the current IP address of the new device, and establish a communication connection with other devices in the target LAN based on the used IP address . This method uses the new device to send an ARP request to each IP address under the LAN, obtains the unoccupied IP address and the IP address that can communicate, and then completes the configuration, so the overall efficiency is higher, and because there is no need to use a DHCP server, it is relatively guaranteed Low implementation cost. In addition, the present invention also provides a device adding device, device and medium in a local area network, and the beneficial effect is the same as that described above.

Description

Method, device, equipment and medium for adding equipment in local area network

technical field

The invention relates to the field of network communication, in particular to a device adding method, device, device and medium in a local area network.

Background technique

In the current network application environment, multiple physical devices or multiple virtual devices in one physical device often need to interconnect with each other to form a local area network, and then synchronize information based on the local area network; All devices need to have a corresponding IP address, and the IP addresses of each other cannot conflict.

When a device is added to the local area network, the IP address is usually assigned to the added device by manually assigning an IP address or dynamically assigning an IP address by DHCP (Dynamic Host Configuration Protocol). The method of manually assigning an IP address requires manually configuring an IP address for each device, and also needs to record the IP addresses of other devices interconnected with the device in the device system, write them into the configuration file, and then IP addresses establish connections between devices. The method of manually assigning IP addresses is relatively cumbersome in operation, and when a device joins the LAN, it is necessary to manually update the configuration files of all current devices in the LAN, so the efficiency of adding new devices in the LAN is relatively low; The way of assigning IP addresses is to assign IP addresses to devices, and an independent DHCP server needs to be set in advance, which increases the overall cost.

It can be seen that it is an urgent problem to be solved by those skilled in the art to provide a method for adding devices in a local area network to improve the overall efficiency of adding new devices to the local area network and relatively ensure a relatively low implementation cost.

Contents of the invention

The object of the present invention is to provide a method, device, equipment and medium for adding equipment in a local area network, so as to improve the overall efficiency when adding new equipment to the local area network, and relatively ensure a relatively low implementation cost.

In order to solve the above-mentioned technical problems, the present invention provides a method for adding equipment in a local area network, including:

When a new device is connected to the target LAN, an ARP request is sent to each IP address recorded in the preset address table through the new device; wherein, the predetermined IP address planned for the target LAN in advance is recorded in the preset address table;

Generate an ARP table according to the response information of each ARP request; wherein, the ARP table records available IP addresses and used IP addresses in the given IP addresses;

Select the target available IP address from the available IP addresses to configure it as the current IP address of the new device, and establish a communication connection with other devices in the target LAN based on the used IP address.

Preferably, before the new device sends an ARP request to each IP address recorded in the preset address table, the method further includes:

Set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN;

Generate a predetermined IP address that belongs to the IP network segment and meets the requirements of the subnet mask and record it in the preset address table.

Preferably, after selecting the available IP address of the target from the available IP addresses, the method further includes:

When there is a second new device to select a target available IP address at the same time, it is judged whether the MAC address of the new device is less than the MAC address of the second new device;

If yes, then perform the step of being configured as the current IP address of the new device, and control the second new device to reselect the available IP address of the target in the available IP addresses;

Otherwise, control the new device to reselect the target available IP address from the available IP addresses.

Preferably, establishing a communication connection with other devices in the target LAN according to the used IP address is specifically:

Establish a communication TCP/IP connection with other devices in the target LAN based on the used IP address.

Preferably, after establishing a communication connection with other devices in the target LAN according to the used IP address, the method further includes:

According to the preset cycle, the new device is controlled to send an ARP request to each IP address recorded in the preset address table to update the ARP table.

In addition, the present invention also provides a device adding device in a local area network, including:

The request sending module is used to send an ARP request to each IP address recorded in the preset address table through the new device when a new device is connected to the target LAN; wherein, the preset address table records the predetermined IP planned in advance for the target LAN address;

A table generation module is used to generate an ARP table according to the response information of each ARP request; wherein, the available IP address and the used IP address in the predetermined IP address are recorded in the ARP table;

The configuration connection module is used to select the target available IP address from the available IP addresses to be configured as the current IP address of the new device, and to establish a communication connection with other devices in the target LAN according to the used IP address.

Preferably, the device further comprises:

A network segment mask setting module is used to set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN;

The address table generation module is used to generate a predetermined IP address that belongs to the IP network segment and meets the requirements of the subnet mask and records it in the preset address table.

Preferably, the device further comprises:

A table updating module, configured to control the new device to send an ARP request to each IP address recorded in the preset address table according to a preset period to update the ARP table.

In addition, the present invention also provides a device adding device in a local area network, including:

memory for storing computer programs;

The processor is used for implementing the steps of the above-mentioned method for adding devices in the local area network when executing the computer program.

In addition, the present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method for adding a device in a local area network are realized.

In the device adding method in the local area network provided by the present invention, when a new device is connected to the local area network, the new device sends an ARP request according to the IP address recorded in the preset address table, and then according to the response information of each ARP request, generates an ARP request containing There is an ARP table of available IP addresses and used IP addresses to determine the current occupancy of each IP address in the preset address table, and then select the target available IP address from the available IP addresses and configure it as the current IP address of the new device. And establish a communication connection relationship with other devices in the local area network according to the used IP address, so as to realize adding new devices in the local area network. This method uses the new device to send an ARP request to each IP address under the LAN, obtains the unoccupied IP address and the IP address that can communicate, and then completes the configuration. Compared with the manual allocation of IP addresses, the overall efficiency is higher, and Since there is no need to use a DHCP server, relatively low implementation costs are guaranteed. In addition, the present invention also provides a device adding device, device and medium in a local area network, and the beneficial effects are the same as those described above.

Description of drawings

In order to illustrate the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

FIG. 1 is a flow chart of a method for adding equipment in a local area network provided by an embodiment of the present invention;

FIG. 2 is a flow chart of another method for adding devices in a local area network provided by an embodiment of the present invention;

Fig. 3 is a structural diagram of an apparatus for adding equipment in a local area network according to an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The core of the present invention is to provide a method for adding equipment in a local area network, so as to improve the overall efficiency when adding new equipment to the local area network, and relatively ensure a relatively low implementation cost. Another core of the present invention is to provide a device adding device, device and medium in a local area network.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment one

FIG. 1 is a flow chart of a method for adding devices in a local area network provided by an embodiment of the present invention. Please refer to Figure 1, the specific steps of the device addition method in the LAN include:

Step S10: When a new device is connected to the target LAN, the new device sends an ARP request to each IP address recorded in the preset address table.

Wherein, the predetermined IP address planned in advance for the target LAN is recorded in the preset address table.

It should be noted that ARP (Address Resolution Protocol) is a TCP/IP protocol for obtaining a physical address based on an IP address. When the host sends information, it broadcasts the ARP request containing the target IP address to all hosts on the network, and receives the return message to determine whether the target IP address is already occupied by a device; after receiving the return message, store the IP address and physical address Enter the local ARP cache and keep it for a certain period of time, and directly query the ARP cache for the next request to save resources. In this step, the new device sends an ARP request to each IP address recorded in the preset address table, and receives a return message. The main purpose is to determine whether each IP address in the preset address table has been used according to the return message, that is, whether Can be occupied by new equipment. Since the number of devices that can be accommodated in the LAN will be preset according to specific needs during LAN planning, and since an IP address can uniquely correspond to a device, the number of devices that can be accommodated in the LAN is the same as the planned IP address in the LAN. The number of addresses is directly related, and the predetermined IP addresses recorded in the preset address table are all IP addresses that can be used in the current local area network.

Step S11: Generate an ARP table according to the response information of each ARP request.

Wherein, the ARP table records available IP addresses and used IP addresses in the predetermined IP addresses.

It should be noted that after the new device sends an ARP request to each predetermined IP address, if there is a device that already occupies the target predetermined IP address, the device will receive the ARP request and respond to the new device in the form of a response message; if the target If the IP address is not occupied by an existing device in the LAN, the new device will not receive the reply message. Therefore, the generation of the ARP table according to the response information of each ARP request referred to in this step is to determine the available IP address and the used IP address in the given IP address according to whether there is a corresponding response information for each APR request, and then generate the APR table .

Step S12: Select the target available IP address from the available IP addresses to be configured as the current IP address of the new device, and establish a communication connection with other devices in the target LAN according to the used IP address.

It can be understood that the essence of adding a new device in the LAN is that the new device has its own IP address in the LAN and establishes a communication relationship with other devices in the LAN. Therefore, in this step, first select the available IP address The available IP address of the target is configured as the current IP address of the new device. Since the used IP address can correspond to other devices currently existing in the LAN, this step further establishes a communication connection with other devices in the target LAN based on the used IP address , and finally add new devices to the LAN. In addition, the establishment of a communication connection referred to in this step can be a connection based on the TCP/IP protocol, or a connection based on the UDP protocol, which should be determined according to the specific use requirements of the device in the local area network, and is not specifically limited here. .

In the device adding method in the local area network provided by the present invention, when a new device is connected to the local area network, the new device sends an ARP request according to the IP address recorded in the preset address table, and then according to the response information of each ARP request, generates an ARP request containing There is an ARP table of available IP addresses and used IP addresses to determine the current occupancy of each IP address in the preset address table, and then select the target available IP address from the available IP addresses and configure it as the current IP address of the new device. And establish a communication connection relationship with other devices in the local area network according to the used IP address, so as to realize adding new devices in the local area network. This method uses the new device to send an ARP request to each IP address under the LAN, obtains the unoccupied IP address and the IP address that can communicate, and then completes the configuration. Compared with the manual allocation of IP addresses, the overall efficiency is higher, and Since there is no need to use a DHCP server, relatively low implementation costs are guaranteed.

Embodiment two

On the basis of the above embodiments, the present invention also provides the following series of preferred implementation manners.

Fig. 2 is a flow chart of another method for adding devices in a local area network provided by an embodiment of the present invention. Steps S10-S12 in FIG. 2 are the same as those in FIG. 1, and will not be repeated here.

As shown in Figure 2, as a preferred implementation, before the new device sends an ARP request to each IP address recorded in the preset address table, the method further includes:

Step S20: Set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN.

Step S21: Generate a predetermined IP address that belongs to the IP network segment and meets the requirements of the subnet mask and records it in the preset address table.

It should be noted that the scale of enterprises is getting larger and larger, and the number of devices in the LAN has changed from a dozen to dozens or even hundreds of devices. Since the number of IP addresses required is also increasing, it can be accessed through the IP network. The segment and the subnet mask jointly define the value range of the IP address. For example, if the equipment size of the pre-planned LAN is within the range of 255 devices, then the IP network segment can be agreed to use 192.168.1.0, and the subnet mask is 255.255.255.0. , the subnet mask can be 255.255.255.240. The above example is only to illustrate the relationship between the IP network segment, subnet mask and IP address. Since the cooperation between the IP network segment and the subnet mask is a technical content well known to those skilled in the art, we will not go into too much detail here. To repeat, this embodiment only adopts this method to relatively reduce the load degree of dividing the predetermined IP address in the local area network and improve the overall efficiency.

In addition, as a preferred embodiment, after selecting the target available IP address from the available IP addresses, the method further includes:

When there is a second new device to select a target available IP address at the same time, it is judged whether the MAC address of the new device is less than the MAC address of the second new device;

If yes, then perform the step of being configured as the current IP address of the new device, and control the second new device to reselect the available IP address of the target in the available IP addresses;

Otherwise, control the new device to reselect the target available IP address from the available IP addresses.

It should be noted that this embodiment is applicable to the situation that there is a second new device at the same time as the new device, and the second new device selects the same target available IP address as the new device. In this case, in order to prevent different devices from Occupying the same IP address, you can compare the numerical progress of the MAC (Media Access Control or Medium Access Control) address between the new device and the second new device. Since the MAC address of each device is different, the MAC The address can be used as an accurate comparison basis between the new device and the second new device, and then in this embodiment, by judging whether the MAC address of the new device is smaller than the MAC address of the second new device, to determine whether to control the new device or to control the second The new device reselects the available IP address of the target and configures it as the current IP address, so as to avoid the IP address conflict accordingly. Based on the idea of this embodiment, the judging conditions can also be modified accordingly, such as "judging whether the MAC address of the new device is greater than the MAC address of the second new device", but in essence, it is the difference between the new device and the second new device. Therefore, the modification of the judgment condition should also fall within the scope of protection of this embodiment.

In addition, as a preferred implementation manner, establishing a communication connection with other devices in the target LAN according to the used IP address is specifically:

Establish a communication TCP/IP connection with other devices in the target LAN based on the used IP address.

It should be noted that TCP/IP is a stable, well-structured, and competitive protocol. TCP and IP are two independent and tightly integrated protocols responsible for managing and guiding the transmission of data packets in the network. Both of them use a special message header to define the content of each message. TCP is responsible for the connection with the remote host. And IP is responsible for addressing, so that the message is sent to the place where it should go. Since the TCP/IP connection has a good damage recovery mechanism, and can join the network without interrupting existing services, and also has an efficient error handling mechanism, the TCP/IP connection can be relatively efficient between devices in the LAN. data communication.

In addition, as a preferred implementation manner, after establishing a communication connection with other devices in the target LAN according to the used IP address, the method further includes:

According to the preset cycle, the new device is controlled to send an ARP request to each IP address recorded in the preset address table to update the ARP table.

Since the devices connected to the LAN are constantly changing, in order to ensure the usability of the available IP addresses and the used IP addresses recorded in the ARP table, after the new device is connected to the LAN, the new device can be updated according to the preset cycle. The ARP table in the device is updated. The update method is to resend the ARP request to each IP address recorded in the preset address table, and update the content of the used IP address in the ARP table according to the response information, so as to ensure that the used IP address The accuracy ensures the reliability of the communication connection between the new device and other devices in the LAN.

Embodiment three

The embodiment of the method for adding equipment in the local area network has been described in detail above, and the present invention also provides a device for adding equipment in the local area network corresponding to the method, because the embodiment of the device part and the embodiment of the method part are mutually Correspondingly, for the embodiment of the device part, please refer to the description of the embodiment of the method part, and details will not be repeated here.

Fig. 3 is a structural diagram of an apparatus for adding equipment in a local area network according to an embodiment of the present invention. The device adding device in the local area network provided by the embodiment of the present invention includes:

The request sending module 10 is used to send an ARP request to each IP address recorded in the preset address table through the new device when a new device is connected to the target LAN; IP address.

The table generating module 11 is configured to generate an ARP table according to the response information of each ARP request; wherein, the ARP table records available IP addresses and used IP addresses among predetermined IP addresses.

The configuration connection module 12 is used to select the target available IP address from the available IP addresses to be configured as the current IP address of the new device, and establish a communication connection with other devices in the target LAN according to the used IP address.

The device adding device in the local area network provided by the present invention, when a new device is connected to the local area network, sends an ARP request through the new device according to the IP address recorded in the preset address table, and then according to the response information of each ARP request, generates an ARP request containing There is an ARP table of available IP addresses and used IP addresses to determine the current occupancy of each IP address in the preset address table, and then select the target available IP address from the available IP addresses and configure it as the current IP address of the new device. And establish a communication connection relationship with other devices in the local area network according to the used IP address, so as to realize adding new devices in the local area network. This device sends an ARP request to each IP address under the LAN through a new device, obtains an unoccupied IP address and a communicable IP address, and then completes the configuration. Compared with manually assigning an IP address, the overall efficiency is higher, and Since there is no need to use a DHCP server, relatively low implementation costs are guaranteed.

On the basis of embodiment three, the device also includes:

A network segment mask setting module is used to set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN;

The address table generation module is used to generate a predetermined IP address that belongs to the IP network segment and meets the requirements of the subnet mask and records it in the preset address table.

On the basis of the equipment adding device in the above local area network, the device also includes:

A table updating module, configured to control the new device to send an ARP request to each IP address recorded in the preset address table according to a preset period to update the ARP table.

Embodiment Four

The present invention also provides a device adding device in a local area network, including:

memory for storing computer programs;

The processor is used for implementing the steps of the above-mentioned method for adding devices in the local area network when executing the computer program.

In the device adding device in the local area network provided by the present invention, when a new device is connected to the local area network, the new device sends an ARP request according to the IP address recorded in the preset address table, and then according to the response information of each ARP request, generates an ARP request containing There is an ARP table of available IP addresses and used IP addresses to determine the current occupancy of each IP address in the preset address table, and then select the target available IP address from the available IP addresses and configure it as the current IP address of the new device. And establish a communication connection relationship with other devices in the local area network according to the used IP address, so as to realize adding new devices in the local area network. This device sends an ARP request to each IP address under the LAN through a new device, obtains an unoccupied IP address and a communicable IP address, and then completes the configuration. Compared with manually assigning IP addresses, the overall efficiency is higher, and Since there is no need to use a DHCP server, relatively low implementation costs are guaranteed.

The present invention also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above method for adding a device in a local area network are realized.

The computer-readable storage medium provided by the present invention, when a new device is connected to the local area network, sends an ARP request through the new device according to the IP address recorded in the preset address table, and then according to the response information of each ARP request, generates an ARP request containing The ARP table of the available IP address and the used IP address to determine the current occupancy of each IP address in the preset address table, and then select the target available IP address from the available IP addresses and configure it as the current IP address of the new device, and Establish a communication connection relationship with other devices in the LAN based on the used IP address, so as to add new devices in the LAN. The computer-readable storage medium sends an ARP request to each IP address under the LAN through a new device, obtains an unoccupied IP address and a communicable IP address, and then completes the configuration. Compared with manual allocation of IP addresses, the overall efficiency Higher, and because there is no need to use a DHCP server, relatively low implementation costs are guaranteed.

The method, device, equipment and medium for adding equipment in a local area network provided by the present invention have been introduced in detail above. Each embodiment in the description is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

It should also be noted that in this specification, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is no such actual relationship or order between the operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (10)

1. A method for adding equipment in a local area network, comprising: When a new device accesses the target local area network, the new device sends an ARP request to each IP address recorded in the preset address table; wherein, the preset address table records the predetermined IP planned for the target local area network in advance address; Generate an ARP table according to the response information of each of the ARP requests; wherein, the available IP address and the used IP address in the predetermined IP address are recorded in the ARP table; Selecting a target available IP address from the available IP addresses to be configured as the current IP address of the new device, and establishing a communication connection with other devices in the target LAN according to the used IP address. 2. The method according to claim 1, characterized in that, before the new device sends an ARP request to each IP address recorded in the preset address table, the method further comprises: Set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN; generating the predetermined IP address that belongs to the IP network segment and meets the requirement of the subnet mask, and records it in the preset address table. 3. The method according to claim 1, characterized in that, after selecting the target available IP address from the available IP addresses, the method further comprises: When there is a second new device that selects the target available IP address at the same time, judging whether the MAC address of the new device is smaller than the MAC address of the second new device; If yes, then perform the step of configuring the current IP address of the new device, and control the second new device to reselect the target available IP address from the available IP addresses; Otherwise, control the new device to reselect a target available IP address from the available IP addresses. 4. The method according to claim 1, wherein the establishment of a communication connection with other devices in the target LAN according to the used IP address is specifically: Establishing a communication TCP/IP connection with other devices in the target LAN according to the used IP address. 5. The method according to any one of claims 1-4, characterized in that, after establishing a communication connection with other devices in the target LAN according to the used IP address, the method further comprises: The new device is controlled according to a preset period to send an ARP request to each IP address recorded in the preset address table to update the ARP table. 6. A device adding device in a local area network, characterized in that it comprises: The request sending module is used to send an ARP request to each IP address recorded in the preset address table through the new device when a new device accesses the target local area network; The predetermined IP address planned by the target LAN; A table generating module, configured to generate an ARP table according to the response information of each of the ARP requests; wherein, the ARP table records available IP addresses and used IP addresses in the predetermined IP addresses; The configuration connection module is used to select a target available IP address from the available IP addresses to be configured as the current IP address of the new device, and to establish communication with other devices in the target LAN according to the used IP address connect. 7. The device according to claim 6, characterized in that the device further comprises: Network segment mask setting module, used to set the IP network segment of the target LAN, and set the subnet mask of the IP network segment according to the planning of the target LAN; An address table generation module, configured to generate the predetermined IP address belonging to the IP network segment and satisfying the subnet mask requirement, and record it into the preset address table. 8. The device according to claim 6 or 7, characterized in that the device further comprises: A table updating module, configured to control the new device to send an ARP request to each IP address recorded in the preset address table according to a preset period to update the ARP table. 9. A device adding device in a local area network, characterized in that, comprising: memory for storing computer programs; A processor, configured to implement the steps of the method for adding devices in a local area network according to any one of claims 1 to 5 when executing the computer program. 10. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the local area network according to any one of claims 1 to 5 is realized Steps in the device addition method in .