Why does the network disconnect and connect for a while?

1. Line problem

First check the wiring at home to see if the connectors in the house are connected properly and whether the lines have passed through any interference sources, such as air conditioners, refrigerators, TVs, etc. , try to keep a certain distance from these electrical equipment. You can also replace indoor lines with network cables with stronger anti-interference capabilities. Make sure the wiring is connected correctly.

2. Network card problem

Network cards are generally PCI network cards or onboard network cards. When choosing, you must choose one with better quality, otherwise it may cause poor Internet quality. 10M or 10M/100M adaptive network card is available.

In addition, many machines share the Internet and use dual network cards, which also causes conflicts and deserves attention. At this time, you should unplug the network card connected to the LAN or other computers, and only use the network card connected to ADSL to test the Internet. If it fails Return to normal, and then check whether there is any conflict between the two network cards.

3. ADSL MODEM or network card setting issues

Now MODEM generally has two working modes, one is the normal mode using dial-up software, and the other is the automatic dial-up routing mode. In normal mode, there is no need to set the MODEM, just use the default.

The routing mode needs to be set. MODEM has its own flash memory, which can store the account and password box settings for automatic dialing at startup. The most common problem with this method is that the IP address of the ADSL Modem is set incorrectly, or the DNS server is set incorrectly.

Because for ADSL virtual dial-up users, there is no need to set an IP address, it can be assigned automatically. TCP/IP gateway generally does not need to be set up. However, the DNS must be set correctly. The DNS address can be obtained from the local telecommunications department.

In addition, TCP/IP settings are most likely to cause the inability to browse the web. Generally, they are set to automatically obtain an IP address, but DNS must be filled in. Others can use the default

4. ADSL Modem synchronization abnormality problem

Check whether the connection between your phone line and ADSL is not in good contact, or there is a problem with the phone line and the quality is poor Phone calls are particularly prone to dropped calls, but such problems are difficult to check, so be sure to use better quality phone lines.

If you suspect that the splitter or ADSL Modem is broken, try directly connecting the external line to the ADSL Modem without using a splitter. The connection between the splitter and the ADSL Modem should not be too long, otherwise synchronization will not be possible. Excluding the above situation, the synchronization problem can be solved by restarting the ADSL Modem.

5. Operating system, virus issues

In addition to the line conditions mentioned above, there are also computer system issues. For example, the legendary killer caused the local area network to go offline. This problem occurs in a large area across the country, and the virus will affect both host agents and router agents in Internet cafes (LAN).

6. Firewall and IE browser settings are incorrect

Although ADSL is less likely to be attacked by hackers and viruses, the possibility cannot be ruled out, especially web viruses and worms. If the virus damages ADSL-related components, the flow will also be cut off.

If it is determined that you have been damaged and attacked by viruses, and the flow is still interrupted, you should check the installed firewall, proxy server software for shared Internet access, Internet acceleration software, etc., stop running such software, and then go online again. Test to see if the speed returns to normal. If the Internet is unstable, you can try to turn off the firewall first, test whether it is stable, and then make corresponding settings. In addition, firewall or IE browser failure may also result in normal connection but inability to open web pages.

7. Static electricity problem

Static electricity is an important factor affecting ADSL, and the power supply at home is generally not grounded. Coupled with the interference of various electrical appliances (such as refrigerators and TVs), it is very difficult to It is easy to cause static interference, causing ADSL to frequently drop calls during use. Please lead out the wire from the ground end of the three-core socket and ground it well. This can generally solve the problem of dropped calls. General solution: Add a grounding wire to solve the problem of disconnection.

8. Software conflict problem

There are two ways for ADSL to access the Internet: virtual dial-up and dedicated line access. Nowadays, most ADSL for individual users is virtual dial-up. PPPOE (Point-to-Point Protocol over Ethernet) virtual dial-up software has its own advantages and disadvantages.

After multiple tests on different operating systems, if the operating system you are using is Windows XP, it is recommended to use its own PPPOE dial-up software. There will be fewer interruptions and the stability will be relatively improved.

If you are using Windows ME or 9x, you can use the following virtual dial-up software--EnterNet, WinPoET, RasPPPoE.

Among them, EnterNet is the most commonly used one now. EnterNet 300 is suitable for Windows 9x; EnterNet 500 is suitable for Windows 2000/XP. When you have problems with a PPPOE dial-up software, you may wish to uninstall the software and use another PPPOE dial-up software. Please be careful not to install multiple PPPOE software at the same time to avoid conflicts.

Because telephone line Internet access is the main method of broadband access, and a virtual channel must be set up. If several dial-up software are mixed, conflicts will occur and the network will be extremely unstable. If there is a software conflict, try to find the conflicting software and uninstall it or solve it in other ways. For example, some friends’ BT downloading may cause network disconnection. It may occupy too many threads during downloading and cause disconnection.

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