Why does the IP address of the computer always change?

The IP allocation of these three computers is DHCP dynamic allocation, because the IP allocated by DHCP has a maximum survival time problem, if it is not renewed in time after expiration, then the IP that was previously used may be assigned by other computers. The DHCP server will reassign you a new IP.

There are two ways to solve this problem, the first customer service uses manual IP addresses.

Yes, when you start a DHCP server, you are assigned an IP address based on the boot time. However, you can set the static IP of your computer and it won't change.

Tired, isn't it enough for you to set a fixed IP for each computer? Your router DHCP automatically assigns IP addresses, DHCP has a lease problem, for example, your auto-allocation range is 100 200, and computer B has been using it. 101, when the lease period is not up, even if you turn on the computer first, the IP he automatically gets is 101, but the lease period expires, you turn on the computer first, and he will be automatically assigned 100.

When 100 is squeezed out, and then you turn on the computer A that used to be 100, he will ...

Solution: 1. Take the win7 system as an example, first click on the open network option in the network location that has been connected, and click "Open Network and Sharing Center" in it.

2. Then in the Network & Sharing Center window that opens, click "Change adapter settings" in the left menu.

3. Then right-click the connected network icon in the network connection page that opens, and click "Properties" in the pop-up options.

4. Select "Internet Protocol Version 4" in the properties dialog box that opens and click the "Properties" button below.

5. You can open the property setting dialog box, click "Use the IP address below" and enter the fixed IP address, and click OK to complete the setting.

5.Network failures: Network failures can cause IP addresses to be changed by network service providers or by users changing the way they connect to the network.

1.Use dynamic DNS: Dynamic DNS can map dynamic IP addresses to a fixed domain name, and when the IP address changes, dynamic DNS will automatically update the domain name resolution record, so that users can use the fixed domain name to access network services.

2.Use a VPN: A VPN can connect a device to a remote network through a virtual private network (VPN) router and assign it an IP address, which can solve the problem of IP address changes, but requires the user to purchase a VPN service.

In conclusion, there can be many reasons for IP address changes, but there are some workarounds that can help with this.

Network failures are also one of the causes of IP address changes. Network failures can cause the network service provider to reassign the IP address, or the user to change the network connection, which can cause the IP address to change.

1.Use a static IP address.

1.Dynamic IP addresses.

2.Use dynamic DNS

When we use the Internet, there are two types of IP addresses, one is a static IP address and the other is a dynamic IP address. A static IP address is an IP address that is manually configured by the network administrator and does not change over time. Dynamic IP addresses, on the other hand, are automatically assigned by the network service provider and can change over time.

1.Use a static IP address.

Internet service providers are also one of the causes of IP address changes. When providing network services to users, network service providers will allocate IP addresses according to the needs of users and the topology of the network backup. When the network service provider needs to re-guess the new planned network structure, it may cause the IP address to change.

2.Network Service Providers.

3.Use a VPN

When we use the network, there are two kinds of IP addresses, one is a static IP address and the other is a dynamic IP address. A static IP address is an IP address that is manually configured by the network administrator and does not change over time. Dynamic IP addresses, on the other hand, are automatically assigned by ISPs and can change over time.

Dynamic DNS is a technology that maps dynamic IP addresses to a fixed domain name. When the IP address changes, Dynamic DNS automatically updates the DNS record, so that users can use the fixed domain name to access network services. The use of dynamic DNS can solve the problem of IP address change, but it requires users to purchase domain names and dynamic DNS services, which is costly.

1.Use a static IP address that is missing from the calendar.

If you want your IP address to remain the same, you can use a static IP address. The static IP address is manually configured by the network administrator, and it does not change Voqsearch over time. However, the use of static IP addresses requires network administrators to have a certain understanding of the network topology and configuration, making it unsuitable for ordinary users.

3.Use a VPN

3.Network failures.

Operating computer: Lenovo Thinkpad

Operating system: Windows 7.

1. Open the Windows 7 system, click Network in the lower left corner, and click Open. (as shown in the image below).

2. Click to open the network sharing center in the window, and click to open. (as shown in the figure below) 3. Click Local Connection in the window and click Open. (as shown in the figure below) 4. Click Properties in the window and click Open.

As shown in the figure below) 5. Click the IP option in the window and click Open. (as shown in the figure below) 6. Finally, you can modify the fixed IP address in the window. (as shown in the figure below) Tips for using the computer:

1. There is a straw for the system to save lives.

When you suspect that changes made to your computer before the system reboot may be causing a failure, you can press the F8 key when you start the system and select the last correct configuration to revert the changes made to the system.

2. Restore the previous driver of the hardware.

If you find that the system is unstable or the hardware is not working after installing a new hardware driver, you can simply select the driver recovery button in the device manager to restore the normal system family state of the previous shelter. However, you can't restore the printer's driver. <>

This means that you are a dynamic IP.

Computers that access the Internet through modem, isdn, adsl, wired broadband, cell broadband, etc., are assigned different IP addresses each time they surf the Internet, which is a dynamic IP address. Because IP address resources are precious, most users access the Internet through dynamic IP addresses.

The so-called dynamic means that every time you surf the Internet, Telecom will randomly assign you an IP address, static means that you use an address every time you surf the Internet, and those browsers that can display your IP address are generally incorrect.

It is used on both the Internet and the local area network, and the IP format is the same.

To put it simply. The IP in the Internet café is static. Forever. Unless you take the initiative to apply for a replacement.

Internet access at home. ADSL is also good. Dialing is dynamic and is randomly assigned to you by telecommunications. And it's temporal. This will change when you restart ADSL.

The LAN of the cell is basically a static IP

The IP address of ADSL users is obtained through DHCP dynamics, which means that every time you dial up, you will get a different IP address, and the operator does this to improve the utilization rate of IP addresses, because China's public IP addresses are too scarce, I hope it will help you.