What should I do if there is an ip conflict between the external device and the computer?

1. What should I do if the ip of the computer connecting to the machine conflicts?

Click on the network connection icon in the lower right corner of the computer, which is the small computer.

Then click "Open the Internet and * * * Enjoy Center". In the new window that opens, click Change Adapter Settings in the upper left corner.

Open Network Connection, right-click Local Area Connection here and select the Properties button. 3 Click Properties to open the Local Connection Properties dialog box. Double-click the Internal Protocol Version 4(TCP/IPv4) option in the "This connection uses the following items" list.

4 The Inter Protocol Version 4(TCP/IPv4) dialog box pops up, and select "Use the following IP address" radio. Then assign an IP address to the machine in the IP address text box.

After filling in, position the mouse cursor in the "subnet mask" text box, and the system will automatically fill in the subnet mask. Enter the gateway address in the default gateway, that is, the address of the router.

Then click "OK" button to save, and the setting is successful.

2. What should I do if the router ip conflicts with the computer ip?

This situation is mainly because other computers under the router are also using your computer's IP address, resulting in IP address conflict and unable to access the Internet.

The main reasons for this situation are:

1. The IP address of the local computer is 192. 168. 1, which is different from the router. The default management address of the router is192.168.1.1. Therefore, the computer under the router cannot use this address, but can use192.168.1.2-192.466666.

2. The computer under the router changes the IP, and the modified IP address is the same as your computer's IP address.

For IP address conflicts, you can change the IP address of the computer to prevent IP address conflicts.

Right-click My Network Places->; ; "properties":

Pop up the network connection management window, and right-click Local Area Connection-> ; "properties"

In the Local Area Connection properties, double-click the internal protocol (TCP/IP):

You can set the IP address. It can be set manually. If the router turns on the DHCP function, it can also be set to automatically obtain the IP address and DNS server address.

3. What about the conflict between computer system and IP?

What you want to say is IP conflict, right?

Reason:

IP conflict: 1. Many users don't know TCP/IP and how to set IP address, subnet mask, default gateway and other parameters. Sometimes users don't get the information of the above parameters from the administrator, or modify the information unintentionally. 2. When the administrator or user sets parameters according to the above parameters provided by the administrator, the parameters are incorrectly entered due to errors; 3. During the maintenance and debugging of the client, the maintainer uses the temporary IP address. 4. Someone stole someone else's IP address.

ADSL Internet access will have an IP limit! Digital icons, one is a broadband connection diagram.

It shows that IP conflicts are probably caused by some hacker software. I know a hacker tool called "LAN Terminator", which uses ARP spoofing and IP attacks to keep IP addresses showing conflicts. It can be solved in the following ways: using anti-virus software to upgrade to the latest virus database to kill the system; Install the DHCP server and specify the reserved IP address for the computer, that is, bind the IP address and MAC address of the computer on the DHCP server.

There are several main reasons for IP conflicts. Some people may not know TCP/IP and how to set parameters such as "IP address", "subnet mask" and "default gateway" (don't laugh at them, after all, we came step by step). Sometimes the parameter information they get may not be told by the administrator, or it may be correct at first, but it may be accidentally modified later. Even if the administrator gives the correct parameter data, we will always make mistakes, because the tiger still dozes off, and the parameter input error is inevitable. In addition, when someone repairs and debugs the machine, the maintenance personnel may use some temporary IP addresses, and if they forget to change them, there may be conflicts. Another situation we hate is that someone steals someone else's IP address.

After receiving the conflict report, there are several things to do. First, determine the VLAN where the conflict occurs. Through the vlan definition of IP planning and the conflicting IP address, the network segment where the conflicting address is located can be found. This is very important to successfully find the MAC address of the network card, because some network commands cannot be accessed across network segments.

Let's isolate the client from the network first and let the microcomputer with illegal IP address run, so that we have a chance to find it. Then do some simple tests on the network. The main commands are ping command and arp command. Use the ping command, assuming that the conflicting IP address is 146. 127.35.3. In the msdos window, the command format is as follows:

C:\\ Widow \ \ > Ping 146. 127.35.3

Request timeout

146. 127.35.3 reply: byte =32 time <1msttl =128.

146. 127.35.3 reply: byte =32 time <1msttl =128.

146. 127.35.3 reply: byte =32 time <1msttl =128.

4. What should I do if the computer IP address conflicts?

In the same LAN, if two users use the same IP address at the same time, or one user has obtained an IP address through DHCP, while other users set the same IP address through manual allocation, it will cause IP address conflict, which will make one user unable to use the network normally.

So, how to avoid IP address conflicts? We can analyze it from the following aspects:

Reasons for IP address conflict:

1. Many users don't know how to set parameters such as IP address, subnet mask and default gateway. Sometimes users don't get the information of the above parameters from the administrator, or modify the information unintentionally.

2. Sometimes, when the administrator or user sets the parameters provided by the administrator, there will also be cases where the parameters are input incorrectly due to mistakes;

3. The most common problem is that maintenance personnel use temporary IP address application when maintaining and debugging clients;

4. It is not excluded that someone steals someone else's IP address, resulting in IP address conflict.

Solution of IP address conflict in LAN;

Option 1: check one by one.

This is the most primitive method, that is, when there is an IP address conflict, check next to each computer in the LAN, and modify the IP address after finding the computer that conflicts with it. However, this method is time-consuming and not suitable for large-scale LAN, but only for small-scale network environment.

Scheme 2: MAC address binding.

1. Check the MAC of the local computer and bind it: You can know the MAC address of the network card by running Winipcfg.exe or Ipconfig.exe on the local computer system. The details are as follows: Click Start-Run in Win9X system, enter "Winipcfg" in the text box and press enter to open the IP configuration window. Select "PCI Fast Ether Adapeter" from the drop-down list, and the text displayed in the column of "Adapter Address" is the MAC address of the network card; Run the ipconfig command with the "all" parameter at the DOS prompt of WinNT system, that is, ipconfig/all can also display the MAC address of the network card.

2. Remote detection of MAC addresses of computers: For network administrators, sitting in front of their own computers, they can use TCPView tool software to detect the MAC addresses of all computers in the LAN. After the software installation is completed, execute tcpnv.exe to display the main window of the program. Select the refresh command in the file menu or press F5 directly to start scanning the existing computers in the LAN, and then display the computer name, IP address and MAC address. When you get the MAC address of a computer network card, you can record it and configure it on the gateway or firewall through network management. The specific binding command varies depending on the gateway or firewall used. At this point, if other computers want to use the bound address, there will be a prompt that the IP address has been used.

Scheme 3: Switch security port.

In the past, routers and hubs were used in the network, but now many local area networks have been replaced by switches. With the sharp price reduction of switches in recent years, switches occupy a dominant position in the network market, mainly because of their high cost performance, flexible structure and flexible configuration with the changes of future applications. For the IP address conflict, different departments can also be isolated by using the port of the switch, because different areas can be managed differently by using the switch, and the divided network segments do not interfere with each other, which can solve the problem of IP address conflict to a certain extent.

Option 4: VLAN Division.

Although you can use switches to isolate network segments, thus avoiding IP address conflicts to some extent, it still cannot prevent IP address conflicts caused by user configuration errors in network segments under the same port. A better solution is to use switches to divide VLAN, and then use MAC address binding to deal with them comprehensively.

Solution of personal IP address conflict

1. If the operating system of your computer is windows 98.

Click start → run in the lower left corner, type winipcfg, click ok, click release all in the pop-up window, and then click update all to solve the IP address conflict problem.

If you are prompted that you cannot update, you need to restart your computer.

2. If the operating system of the computer you are using is windows 2000 or windows XP.

Click start → run in the lower left corner, type ipconfig /release, click OK, click start → run here, type ipconfig /renew, and click OK to solve the IP address conflict.

5. What if the computer prompts that there is an IP address conflict?

Hello, my friend, IP conflicts are usually caused by the widespread emergence of local area networks or communities. Of course, this phenomenon will also occur when people use routers to surf the Internet and set IP addresses at home. This is because the IP addresses of the two computers are set the same, so the computer that starts at the back will prompt the computer that already has the same IP, and IP conflicts will occur. As long as they get into the local connection, it's OK to change the IP address. The treatment method is as follows:

IP setting method of XP:

The steps are as follows:

1. Right-click My Network Places on the desktop, and then click Properties.

2. Then right-click Properties on the local connection.

3. Double-click the internal protocol (TCP/IP), or select the TCP/IP protocol and click Properties.

4. Use the following IP address: IP address, the last number. If the previous number is 15, it can be changed to other 25, (2-225).

Then make sure and then make sure. Okay.

IP setting method of WIN7:

1. There is a network shortcut button in the lower right corner of the computer. Click it to open the menu, and then select "Open Network and Enjoy Center".

2. Opens a dialog box where you can choose to change the adapter settings.

3. Find your local connection, right-click, and a menu pops up, then select Properties.

4. Open the Properties dialog box, select "Tcp/ipv4" and click the Properties button.

5. Check "Use the following ip address", IP address and the last number here. If it was 15 before, it can be changed to other 25, (2-225). Then make sure and then make sure. Okay.

Finally, it is OK to restart the computer.

I hope my answer is helpful to you, and I wish you success and happiness ~ ~