High Score solves LAN PC conflicts non IP or MAC conflicts .

It should be under the E switch, right?

The RJ45 header on the no interface of the E-switch is not connected according to the specification, it may be that a certain machine is connected to the LAN port next to the UpLink port of the E-switch, and for the switch with the UpLink port, this port must be left free when using the UpLink port.

You change the IP16 or PC17 to IP, and I have such a strange thing in my Internet café, and I solved it in this way

How to deal with the conflict between the local area and the computer IP and the location? Share it with everyone with a small tool to solve it easily.

will cause conflict.

Resolution. 1. Click on the "Control Panel" option in the "Start" menu and find "Network and Sharing Center" in the Control Panel page

2. Click to enter and select "Change adapter settings";

3. Right-click "Local Connection", select "Properties", and then click the "Configure" button;

4. Select the "Advanced" column, look at the following attribute bar, some computers here display English to find "network address", Chinese to find "network address";

5. Generally, there is no value here at the beginning, and if you want to modify the operating system MAC, click "Value", and then modify the MAC address in the box.

Obviously, there will be a conflict, but it will not be like an IP address conflict, which is manifested as a fact that both machines are very stuck, and both machines are not smooth, in fact, this machine is through for a while, so that the data is very unstable, in fact, people often do this secretly on the LAN, and the consequence is that both machines are not smooth, and it is difficult to find, it is not recommended to do this.

MAC address is unique in the world, if two MAC addresses in a LAN are the same, it will conflict, the result will be network instability, two computers will be able to communicate and one will not be connected, and only one computer can ** data at the same time.

The IP address that should not conflict is the MAC address is just the number of your network card.

For ARP virus or LAN control software based on ARP principle, please use ARP firewall to see which machine is attacking you, and bind the gateway IP and MAC

ARP virus.

Scan the drugs first, and now that you can find that computer, it will be much more convenient.

Two PCs show IP conflict Not to say that these two conflicts.

Generally, if the two IPs are the same, then the first boot is not realistic, and the later boot will show the conflict, so the troubleshooting should be carried out like this.

Start by finding the computer that shows the conflicting viewer IP

Then, according to this IP, see which one else in the network uses this IP and then find the source of the conflict.

Instead of looking at the IPs of two computers that are in conflict

You shouldn't be caused by a virus.

That's what I just figured out, and I contributed it for everyone to share! In fact, I have been using this phenomenon on the Internet for several years, and I have used the methods of netizens, and finally let me find the reason! When you automatically get the IP and keep prompting, 1

You can change the following address to change the fixed IP (the fixed IP writing method is checked by yourself), 2If you still keep prompting (attention is the key to the problem), change the computer name at will, as long as the name is not from the Internet, the steps - my computer - properties - computer name - change - and then add your own unique computer name to the computer name, click OK from the start of the computer will be the problem disappear. (The general problem is related to the system we use, most of them are clones of the online computer name is too repeated, so it will prompt, but it generally does not affect the use, it is a little annoying) I realized it when I was not connected to the Internet, and the computer was still prompting.

You can give it a try.

You can set the IP address by yourself, just go to the settings of the network connection.

You can also use relevant software to prevent IP conflicts, just upstairs.

I've encountered this problem.,It's mainly the IP address conflict reported by the computer.,Finally, it's because a mobile phone robbed this IP.,You and I have a situation, right?

There are still methods.

1. For example, if you have 50 computers, you manually set their IPs to 1 50, and then remove these 50 IPs from the DHCP address pool. That is, if the starting IP is 51, then the IP before 50 will not be assigned when it is automatically assigned. Of course, if the guest maliciously changes the IP to 49, there is still no way.

2. Modify the lease time of DHCP. What is Lease Duration? This is a bit like the reservation function of the IP.

For example, if the lease period is 2 hours, it means that after the 49 device goes offline, the DHCP server will continue to maintain this IP address for 2 hours and will not be assigned to other devices. After the lease expires, DHCP releases the IP address of 49, and the connected mobile phone is likely to be allocated to this free IP. Since your PC is a fixed IP, after booting, it will announce itself as 49, and then there will be an IP conflict.

So if you extend the lease, say 24 hours or more, the probability of conflict is greatly reduced. Of course, the premise is that you have enough IPs to assign, if the IP address pool is exhausted within 24 hours, subsequent devices will not be able to obtain IPs.

3. Obviously, it is best to deploy 1+2 together for the best results. To modify the scheme, you take the 250 255 IPs out of the address pool and distribute them to the fixed PCs, and then appropriately increase the lease time a little more, and use the 2 249 more than 200 IPs to circulate. Hotels are generally settled on a daily basis, and if the scale is not large, the lease is set to 24 hours, which can be avoided except for malicious modifications.

Haha, this is what you call a large local area network, it scares me.

The solution is very simple, but because the interconnection situation of the router is not known, it cannot give you a solution.

Change all pre-6 IPs to different IPs from the same CIDR block, e.g.

How to resolve LAN IP address conflicts and loops.