CN111385367A - Method and device for keeping access equipment on line - Google Patents

Abstract

The invention discloses a method and a device for keeping an access device online. An access management device obtains an IP address through a dynamic address allocation protocol DHCP, and when an IP address change occurs, it obtains the DHCP address when judging that the added access device is not online. After the address pool is allocated by DHCP, modify the original address to communicate with the network of the original access device, and modify the access device to the address of the DHCP network segment. After the modification is successful, modify the access management device back to the DHCP address. To ensure that the access device is always online on the access management device. The invention not only reduces the operation of the access equipment, but also reduces the manual configuration on the access management equipment, and significantly improves the user experience and reduces the configuration cost.

Description

A method and device for keeping an access device online

technical field

The invention belongs to the technical field of equipment installation and maintenance, and in particular relates to a method and device for keeping an access equipment online.

Background technique

Video surveillance is an important part of the security system. Video surveillance is widely used in many occasions because of its intuitive, accurate, timely and rich information content. In recent years, with the rapid development of computer, network and image processing and transmission technology, the popularization trend of video surveillance has become more and more obvious.

In a small video surveillance system, the simple network hard disk video recorder NVR plus network camera IPC networking form is the most commonly used, among which, the NVR is responsible for managing and accessing the IPC.

In many cases, the networking structure is shown in Figure 1. First, connect the NVR and IPC to a switch (Switch), the NVR will automatically search and add the IPC, change the IPC to a static IP address, and the IPC will go online on the NVR. Then connect the switch to a router to access the external network or be accessed by the external network.

In the case of Figure 1, if the router has enabled DHCP (Dynamic Host Configuration Protocol), and the IP address in the router's DHCP address pool is in a different network segment from the NVR, the NVR with dynamic address assignment enabled will The router obtains a new IP address, causing its own IP address to change. If the new IP address and the IPC address are in different network segments, the IPC will be offline. At this time, you need to manually delete the IPC, and then add it again to make the IPC go online. Among them, after manually deleting the IPC, you need to change the static IP address of the IPC to the same network segment as the IP address of the NVR, or change the IPC to dynamic address allocation before adding it to the NVR.

The above technical solution of manually deleting the IPC and then adding it has a redundant and complicated configuration process, and if the IPC is a third-party IPC, it is more troublesome. All work needs to be manually configured, which requires high technical knowledge and is difficult for ordinary users to complete.

Therefore, when the IP address of the NVR changes, it is an urgent problem to make the IPC adapt to the address change of the NVR, reduce the related configuration of the IPC network, improve the user experience, and reduce the configuration cost.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method and device for keeping an access device online. When the IP address of the access management device changes, the access device can adaptively keep online all the time, reducing configuration costs and improving user experience.

In order to achieve the above object, the technical scheme of the present invention is as follows:

A method for keeping an access device online, applied to an access management device, where the access management device adds an access device through an original IP address, and the method for keeping the access device online includes:

Obtain an IP address through the dynamic address allocation protocol DHCP, and the IP address changes;

When judging that the added access device is not online, obtain the DHCP address pool;

Modify its own IP address to the original IP address, and modify the IP address of the added access device to the IP address in the obtained DHCP address pool;

After receiving the message that the access device has successfully modified the IP address, modify the configuration of the added access device to the modified IP address;

Restore its own IP address to the IP address obtained through DHCP.

Further, the access management device is connected to the DHCP server, and the obtaining the IP address through the dynamic address allocation protocol DHCP includes:

Change the mode of obtaining IP address to DHCP mode;

Apply to the DHCP server for an IP address, and receive the response from the DHCP server to obtain the IP address.

Further, the IP address obtained through the dynamic address allocation protocol DHCP is in the same network segment as the obtained DHCP address pool.

Further, restoring the own IP address to the IP address obtained through DHCP includes:

When obtaining an IP address through the dynamic address allocation protocol DHCP, record the obtained IP address;

Based on the recorded IP address, restore its own IP address to the IP address obtained through DHCP.

Further, the access management device is connected to the DHCP server, and the restoring its own IP address to the IP address obtained through DHCP includes:

Through the address lease period of the DHCP server, restore its own IP address to the IP address obtained through DHCP.

The present invention also provides a device for keeping an access device online, which is applied to an access management device. The access management device adds an access device through the original IP address, and the device for keeping the access device online includes:

The DHCP module is used to obtain an IP address through the dynamic address allocation protocol DHCP, and the IP address changes;

The address request module is used to obtain the DHCP address pool when judging that the added access device is offline;

The address modification module is used to modify its own IP address to the original IP address, and to modify the IP address of the added access device to the IP address in the obtained DHCP address pool;

The configuration modification module is used to modify the configuration of the added access device to the modified IP address after receiving the message that the access device has successfully modified the IP address;

The restoration module is used to restore its own IP address to the IP address obtained through DHCP.

Further, the access management device is connected to a DHCP server, and the DHCP module obtains the IP address through the dynamic address allocation protocol DHCP, and performs the following operations:

Change the mode of obtaining IP address to DHCP mode;

Apply to the DHCP server for an IP address, and receive the response from the DHCP server to obtain the IP address.

Further, the IP address obtained through the dynamic address allocation protocol DHCP is in the same network segment as the obtained DHCP address pool.

Further, the restoration module restores its own IP address to the IP address obtained through DHCP, and performs the following operations:

When obtaining an IP address through the dynamic address allocation protocol DHCP, record the obtained IP address;

Based on the recorded IP address, restore its own IP address to the IP address obtained through DHCP.

Further, the access management device is connected to the DHCP server, and the restoration module restores its own IP address to the IP address obtained through DHCP, and performs the following operations:

Through the address lease period of the DHCP server, restore its own IP address to the IP address obtained through DHCP.

The present invention provides a method and device for keeping an access device online. After an address is allocated by DHCP, the access management device modifies the original address to communicate with the original access device network, and modifies the access device to the DHCP network segment. After successful modification, change the access management device back to the DHCP address to ensure that the access device is always online on the access management device. This method not only reduces the operations on the access device and the manual configuration on the access management device, but also significantly improves the user experience and reduces the configuration cost.

Description of drawings

1 is a schematic diagram of a video surveillance network networking according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for keeping an access device online according to the present invention;

FIG. 3 is a flowchart of device interaction according to an embodiment of the present invention.

Detailed ways

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, and the following embodiments do not constitute a limitation of the present invention.

The technical solution of the present invention is mainly applicable to the following scenarios: when the access management device adds the access device and then changes the access device to a static address and then accesses the external network router, the access management device dynamically obtains the IP address and causes the IP address to change. The IP address is not in the same network segment as the access device.

It is easy to understand that in a video surveillance system, NVR is an access management device, and IPC is an access device. The following embodiments take NVRs and IPCs in a video surveillance system as examples for description, and the same applies to access management devices and access devices in other networking environments.

As shown in FIG. 2 , an embodiment of a method for keeping an access device online is applied to an access management device that adds an access device through an original IP address. In this embodiment, a method for keeping an access device online includes:

Obtain an IP address through the dynamic address allocation protocol DHCP, and the IP address changes;

When judging that the added access device is not online, obtain the DHCP address pool;

Modify its own IP address to the original IP address, and modify the IP address of the added access device to the IP address in the obtained DHCP address pool;

After receiving the message that the access device has successfully modified the IP address, modify the configuration of the added access device to the modified IP address;

Restore its own IP address to the IP address obtained through DHCP.

The technical solution of this embodiment is described by taking an access management device as an example. An access device has been added to the access management device, and the access device is in an online state on the access management device. At this time, the access management device is configured with an IP address, and the IP address of the access management device at this time is called the original IP address. In general, the access device is set with a static IP address at this time, the access device and the access management device are connected to the switch at the same time, and the IP address of the access device and the original IP address of the access management device are in the same network segment.

Taking Figure 1 as an example, the IP address of the access management device NVR is 192.168.1.30, the IP address of the access device IPC1 is 192.168.1.31, the IP address of IPC2 is 192.168.1.32, and the IP address of IPC3 is 192.168.1.33 .

After the switch is connected to the router, the router is connected to the external network, and DHCP is enabled on the router. At this time, the router is the DHCP server of the access management device and dynamically assigns IP addresses to the connected devices. DHCP is enabled on the NVR, that is, the NVR changes the mode of obtaining an IP address to DHCP mode, and the IP address can be dynamically obtained from the router.

Assuming that the IP address obtained by the NVR from the router through DHCP is 192.168.0.100, it is a relatively mature technology for the NVR to obtain a dynamic IP address from the router through DHCP, and will not be repeated here.

It is easy to understand that the new IP address obtained by the NVR is 192.168.0.100, and the IP addresses 192.168.1.** of the access devices (IPC1~IPC3) that have been added to the NVR and the new IP address obtained by the NVR are 192.168.0.100 If they are not in the same network segment, the network between the NVR and the IPC will be blocked at this time. The specific manifestation is that the NVR cannot search for the IPC, or the IPC cannot be pinged.

At this time, the access management device determines that the connected access device is offline, obtains the DHCP address pool from the router, and the router returns the DHCP address pool. The access management device modifies its own IP address back to the original IP address, and modifies the IP address of the added access device to the IP address in the acquired DHCP address pool.

Still taking Figure 1 as an example, the NVR obtains the DHCP address pool from the router. Suppose the router's DHCP address pool is 192.168.0.100 to 192.168.0.254, of which 192.168.0.100 is assigned to the NVR. When the NVR applies for the DHCP address pool, it can be obtained from Take a section from 192.168.0.101 to 192.168.0.254 and return it to the NVR. The size of the returned DHCP address pool is determined according to the number of NVR channels. The NVR can declare the required size of the DHCP address pool when applying for the DHCP address pool from the router. Assume that the DHCP address pool returned by the router is 192.168.0.101 to 192.168.0.150. It should be noted that the IP address allocated to the NVR is located in the same network segment as the DHCP address pool allocated to the NVR.

Since the new IP address of the NVR and the IP address of the added IPC are not in the same network segment, it is necessary to change the IP address of the NVR back to the original (old) address, that is, change the mode from which the NVR obtains the IP address to static mode, and change the IP address of the NVR to the static mode. The address is modified back to 192.168.1.30.

After changing to the original (old) address, the NVR can re-communicate with the added IPC. At this time, the NVR changes the IP address of the added IPC to the IP in the obtained DHCP address pool 192.168.0.101~192.168.0.150 address.

For example, the IP address of IPC1 can be modified to: 192.168.0.101; the IP address of IPC2 can be modified to 192.168.0.102, and the IP address of IPC3 can be modified to 192.168.0.103.

How the access management device NVR modifies the IP address of the IPC of the access device is a relatively mature technology, and will not be repeated here.

After completing the modification of the IP address of the access device IPC, the access management device NVR, after receiving the message that the access device has successfully modified the IP address, modifies the IPC configuration of the added access device to the modified IP address, and sets its own IP address. Revert to the IP address obtained via DHCP.

Taking Figure 1 as an example, after receiving the message that the modification is successful returned by the IPC, the NVR changes the configurations of the added IPC1 to IPC3 to the modified IP addresses 192.168.0.101 to 192.168.0.103 on the NVR. Then the NVR modifies its own IP address to 192.168.0.100, so that the NVR and the IPC are in the same network segment, the configuration modification is completed, and the NVR and the IPC can communicate normally.

There are two ways to restore the own IP address to the IP address obtained through DHCP.

When the IP address is obtained through the dynamic address allocation protocol DHCP, the obtained IP address is recorded; according to the recorded IP address, its own IP address is restored to the IP address obtained through DHCP.

Or, through the address lease period of the DHCP server, restore its own IP address to the IP address obtained through DHCP. That is, the NVR can be restored to the IP address obtained through DHCP, and the NVR can be restored to the dynamic IP address (DHCP) mode, and the IP address obtained through DHCP, namely 192.168.0.100, can be restored through the address lease period of the router. This is a mature prior art and will not be repeated here.

The present invention is not limited to which method is adopted to restore the IP address obtained through DHCP, which will not be repeated here.

As shown in Figure 3, the interaction process of NVR, router and IPC includes the following steps:

F1, NVR obtains DHCP address from router;

F2. The router assigns the DHCP address 192.168.0.100 to the NVR;

F3. Determine whether the IPC channel is online, that is, determine whether the added IPC is online, if not, go to the next step;

F4. Obtain the DHCP address pool from the router;

F5, the router returns the DHCP address pool;

F6. The NVR modifies the IP address to the original (old) address 192.168.1.30;

F7. Modify the IPC address to the DHCP network segment address;

F8, IPC returns a successful modification message;

F9. The NVR modifies the channel configuration, that is, modifies the configuration of the added IPC to the modified IP address;

F10, NVR modify the IP address to DHCP address 192.168.0.100.

Corresponding to the above method, an embodiment of an apparatus for keeping an access device online is also provided here, which is applied to an access management device. The access management device adds an access device through the original IP address, and the access device Incoming devices are kept online, including:

The DHCP module is used to obtain an IP address through the dynamic address allocation protocol DHCP, and the IP address changes;

The address request module is used to obtain the DHCP address pool when judging that the added access device is offline;

The address modification module is used to modify its own IP address to the original IP address, and to modify the IP address of the added access device to the IP address in the obtained DHCP address pool;

The configuration modification module is used to modify the configuration of the added access device to the modified IP address after receiving the message that the access device has successfully modified the IP address;

The restoration module is used to restore its own IP address to the IP address obtained through DHCP.

This embodiment is a specific device corresponding to the aforementioned method for keeping an access device online. The content of the technical solution has been described in detail in the description of the method. Elaborate further.

In an embodiment of the present invention, the access management device is connected to a DHCP server, and the DHCP module obtains an IP address through the dynamic address allocation protocol DHCP, and performs the following operations:

Change the mode of obtaining IP address to DHCP mode;

Apply to the DHCP server for an IP address, and receive the response from the DHCP server to obtain the IP address.

In an embodiment of the present invention, the IP address obtained through the dynamic address allocation protocol DHCP is in the same network segment as the obtained DHCP address pool.

In an embodiment of the present invention, the restoration module restores its own IP address to an IP address obtained through DHCP, and performs the following operations:

When obtaining an IP address through the dynamic address allocation protocol DHCP, record the obtained IP address;

Based on the recorded IP address, restore its own IP address to the IP address obtained through DHCP.

In an embodiment of the present invention, the access management device is connected to a DHCP server, and the restoration module restores its own IP address to an IP address obtained through DHCP, and performs the following operations:

Through the address lease period of the DHCP server, restore its own IP address to the IP address obtained through DHCP.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention. deformation, but these corresponding changes and deformations should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. A method for keeping an access device on line is applied to an access management device, the access management device adds the access device through an original IP address, and the method for keeping the access device on line is characterized by comprising the following steps:

acquiring an IP address through a dynamic address allocation protocol (DHCP) and changing the IP address;

when the added access equipment is judged to be offline, a DHCP address pool is obtained;

modifying the IP address of the access equipment into an original IP address, and modifying the IP address of the added access equipment into the IP address in the acquired DHCP address pool;

after receiving the message that the access equipment successfully modifies the IP address, modifying the configuration of the added access equipment into the modified IP address;

and restoring the IP address of the user into the IP address acquired through the DHCP.

2. The method for maintaining the access device on-line according to claim 1, wherein the access management device is connected to a DHCP server, and the obtaining the IP address through a dynamic address assignment protocol DHCP comprises:

modifying the mode of acquiring the IP address into a DHCP mode;

and applying for an IP address from the DHCP server, and receiving a response of the DHCP server to acquire the IP address.

3. The method of claim 1, wherein the IP address obtained by using a dynamic address assignment protocol DHCP is in the same network segment as the obtained DHCP address pool.

4. The method for keeping the access device on line according to claim 1, wherein the restoring the own IP address to the IP address obtained through DHCP comprises:

when an IP address is obtained through a dynamic address allocation protocol (DHCP), the obtained IP address is recorded;

and according to the recorded IP address, restoring the IP address of the user to the IP address obtained through the DHCP.

5. The method for maintaining the access device on line according to claim 1, wherein the access management device connects to a DHCP server, and the restoring the IP address of the access management device to the IP address obtained through DHCP comprises:

and restoring the IP address of the server to the IP address acquired by the DHCP server through the address lease of the DHCP server.

6. A device for keeping access equipment on line is applied to access management equipment, the access management equipment adds access equipment through an original IP address, and is characterized in that the device for keeping access equipment on line comprises:

the DHCP module is used for acquiring an IP address through a dynamic address allocation protocol DHCP and changing the IP address;

the address request module is used for acquiring a DHCP address pool when the added access equipment is judged to be offline;

the address modification module is used for modifying the IP address of the address modification module into an original IP address and modifying the IP address of the added access equipment into the IP address in the acquired DHCP address pool;

the configuration modification module is used for modifying the configuration of the added access equipment into the modified IP address after receiving the message that the access equipment successfully modifies the IP address;

and the recovery module is used for recovering the IP address of the recovery module into the IP address obtained through the DHCP.

7. The apparatus of claim 6, wherein the access management device is connected to a DHCP server, and the DHCP module obtains an IP address through a dynamic address assignment protocol DHCP and performs the following operations:

modifying the mode of acquiring the IP address into a DHCP mode;

and applying for an IP address from the DHCP server, and receiving a response of the DHCP server to acquire the IP address.

8. The apparatus of claim 6, wherein the IP address obtained by dynamic address assignment protocol DHCP is in the same network segment as the obtained DHCP address pool.

9. The apparatus of claim 6, wherein the recovery module recovers its own IP address to an IP address obtained through DHCP, and performs the following operations:

when an IP address is obtained through a dynamic address allocation protocol (DHCP), the obtained IP address is recorded;

and according to the recorded IP address, restoring the IP address of the user to the IP address obtained through the DHCP.

10. The apparatus of claim 6, wherein the access management device is connected to a DHCP server, the recovery module recovers its own IP address to an IP address obtained through DHCP, and performs the following operations:

and restoring the IP address of the server to the IP address acquired by the DHCP server through the address lease of the DHCP server.

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