For high scores, the LAN connection is not available, and DHCP does not assign IPs

It could be that the system services are not open.

dhcp client to open the service.

If you still can't do it or can't do it.

Build your own system - Launcher - System Services Try one of the customizations.

You can also set your address to be automatically obtained, and see if it works.

Or log in to the router to see if the DHCP address pool is too small and check the working status of the router.

1. First, log in to the router settings page to check whether the DHCP server settings are correct.

1 Click Start, click Run;

2. Enter and click OK;

3. Right-click on the local connection and click Properties;

4. Double-click Internet Protocol version 4;

5. In the pop-up dialog box, click Use the following IP address and use the following DNS server address, enter the correct address and click OK.

It is specified that there is another DHCP server in the LAN.

The assigned IP is not an error address and is OK with DHCP.

It's hard to come across this situation, and it's very difficult for DHCP to have the wrong IP address as you said. How can you tell if it's the wrong IP address?

This is the right note for you:

As long as this network cable is plugged in, all PCs in the LAN cannot get DNS, but they can get IP....

This is offline. Should have brought a router. The router may have DHCP configured for which DNS is not configured

The above can be explained:

But you can get the IP, manually configure the DNS to open the web page, and unplug the network cable to work normally.

Because you can't get up by plugging this cable into the computer network card, and you can't get up when you change the crossover cable.

Generally, it is caused by the incorrect rate and duplex settings of the network card, explanation: plugging in the switch can work. Explain that the line has its own rate and duplex.

If you plug in this network cable, you can open the web page by manually configuring the DNS, but the speed is very stuck, and sometimes you can open the connection, sometimes you can't open the connection, which is more suitable for the above explanation.

In fact, there may be worms or LAN viruses on PCs under this line, and there may be loopback phenomena.

Generally, it can be viewed by using a packet capture tool

The simplest thing is to pull it out, wait for which department to declare, know which department the line is going to, and then check the line.

Brother is not a legend, brother is just a legend.

Configure the router WAN port to the WAN port and DHCP with DNS.

Isn't it possible to manually configure an IP address? DHCP is messing up or you can bind a Mac to your office computer

The function of DHCP is that it is not assigned to an IP address, and it is automatically assigned.

But that doesn't mean that if you are not in this address pool, you must not be able to access the Internet.

Because the gateway decides on a legitimate IP CIDR block.

For example, if the routing gateway is, the legitimate available network segment is 2 254. If you don't want to use DHCP, then you can add the DHCP function directly to the static IP address pool of the router for the MAC addresses of all computers.

But the trouble is that every computer needs to be set to the router is a static IP and gateway, including DNS.

If you only want to be responsible for solving the problem of computers that are not in this address pool, you only need to set all these computers to automatically obtain IPs.