Intra domain IP address loss of 200

It should be a LAN virus, such as ARP or something. Or artificial.

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How can an IP address be automatically obtained as a fixed IP? You set it up manually, save it after setting, it is estimated that there is an IP address conflict, or it may be that the DHCP address on your route is limited in the range of settings, you can change it to a larger size, for example, you have 50 machines, but your automatic IP address range is 10 30, then it definitely doesn't work, it's best to set the IP manually yourself

It is strongly recommended to turn off the DHCP service on the router!

If all your computers have a fixed IP, then turn off the DHCP of the router or server, and then, you say that the IP of the computer that can't access the Internet is automatically obtained, then change it and save the data again.

Obviously, the Trojan has modified your configuration, and it is recommended to disconnect from the Internet first, then kill the Trojan, shut down the DHCP server (usually set up in the router), and then connect back to the Internet, OK

It's a virus or a Trojan horse.

Set the IP to be fixed, so many machines will definitely conflict with the automatic ones.

Check out ARP! The phenomenon you're talking about is very similar to what I said when I was messing around.

2.Check your network connection: Make sure your device is connected to the correct network and has working access to the internet.

If you're using a WiFi network, you'll need to check that your router and wireless network are working properly. 3.Check your device drivers and network adapters:

If your device is experiencing IP address loss, it may be due to a problem with your device driver or network adapter. You can check the status of the relevant drivers and network adapters by checking the sales recall in Device Manager. 4.

5.Check the DHCP server: If you are using a DHCP server to assign IP addresses, you need to check that the DHCP server is working properly and make sure that you have allocated enough IP addresses for all devices.

If none of the above methods solve the problem, you may need to contact the network administrator or equipment manufacturer for further assistance.

Summary. Hello dear, according to the situation you described, what to do if the IP address is lost, set to automatically get the IP address and automatically get the DNS server address, see if you can surf the Internet, if you can, you can see your IP address in the local connection status - support tab; Or enter cmd in the Start - > Run - >, enter the DOS interface and then enter ipconfig to see the IP address and network status of your computer.

Hello dear, according to the situation you described, what to do if the IP address is lost, set to automatically get the IP address and automatically get the DNS server address, see if you can surf the Internet, if you can, you can see your IP address in the local connection status - support tab; Or enter cmd in the Start - > Run - >, enter the DOS interface and then enter ipconfig to see the IP address and network status of your computer.

1. If only one user is affected, check the NIC settings to make sure it uses the DHCP service. 2. Check the switch and check the port and VLAN to see if VLAN members are configured. 3. Check whether other devices on this VLAN can get the IP address.

4. If none of these devices can get the address, if multiple devices on multiple subnets have this problem, the problem may be caused by the server itself. The server may not be running the DHCP service, or it may not have enough IP addresses to assign.

1. Win R key to open and run, enter cmd;

2. Enter ipconfig in the cmd window to view the IP address.

1. Open the Network and Sharing Center;

2. Select the network connection status and click Properties;

3. Double-click the IPv4 protocol and change the IP address to automatically obtain.

Open [Start] - [Run] - enter [cmd] enter - enter [ipconfig release] enter - and wait for the program to run [Solution]. 3: Disable the currently used connection and re-enable 1

Use the right mouse button to click the [Online Neighbor] icon and select [Properties] (as shown in Figure 1)Figure 1 2Find the icon of the connection you are currently using, right-click and select [Disable], and then right-click and select [Enable] after deactivating 4: Use the command to re-obtain the IP 1

Click the Start menu, select Run, enter cmd in the Run box, and press Enter.

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You haven't explained the network environment, how can you be taught?

Let's try the easiest way to do it. Reboot for DHCP to be assigned again.

First of all, I want to ask you, do you mean to use an IP address in the Internet café to give you a wireless router, and then connect the computer to this wireless router to the Internet?

If that's the case, you need to test it yourself first, and the specific implementation is not easy to explain here, so add me to the space if you can.

First of all, ping the external network to see what the error is returned (if you can ping through that the problem is strange, so I can't ping to tell you) If the return target host is unreachable, it means that it is a problem with your wireless routing, if it is a timeout, it depends on what the routing protocol of the Internet café is, if it is the RIP protocol, you will also have to make your router this protocol, if it is a static IP, you will go to the Internet café router to add the IP of your wireless router.

Your computer often has IP address conflicts, disconnects for no reason, and when the connection is dropped, you can go online normally after repairing the local connection, but it will be dropped again and again after a while, and so on. These problems are common problems in our enterprise, and the root cause of these problems is not necessarily because of the instability of your external line and the poor quality of the router, but more importantly, it is caused by virus attacks in your intranet, such as common ARP, DDOS, skull and other viruses, they send a lot of spam and deception information to your LAN, and deceive the gateway address information of other hosts in your LAN directly causing you to be unable to access the network. The process of fixing your local connection actually clears the ARP cache information of the machine, and the cache information is emptied to directly clear the wrong gateway IP and MAC correspondence, so you can get on again!

The fundamental reason for the problem of intranet attacks is that there are protocol vulnerabilities in the bottom layer of our Ethernet, and a single hardware router is not good at managing the intranet or cannot manage the intranet at all! It is recommended that you search the Internet for routers that can specifically manage each terminal on the intranet (that is, a simple intranet management scheme), only in this way can you ** the problems that are common in enterprises such as disconnection, stuck, and slow.

Hope it helps!

Helping others: 603230592

First of all, it is necessary to determine whether each interface is correct, and then, the IP address of all computers is automatically obtained, so that there will be no more IP conflicts.

Explain your question supplement.

What is the situation of the telecommunication network, it has nothing to do with your local area, your local area network is an intranet composed of switches and routers, and it is an intranet with IP segments.

The difference between a router and a switch is that there is an additional chip with a gateway function, that is, the router is actually a switch with more functions, so as long as the settings are correct, any device in your small office network can be shared.