The failure of surfing the Internet is related to the performance of the network card.

Internet access has become an indispensable way of life or work. If the network failure has a great impact on us, we need to find out the cause of the failure. Solved, in many cases, the Internet is faulty due to poor performance of the network card.

If you are also a computer-savvy person, then if you go to buy a computer, you will choose to buy a good configuration computer. At the very least, the function and life will be better than others. However, if you are negligent, you may choose a bad network card when you choose a network card, which will cause you to have network problems when you are online. Therefore, when you buy a computer, you need to go all out to understand and carefully think about what kind of computer to buy.

Maybe you all know that a common configuration server uses the DDN 256 K private line to connect to the Internet. There are two network cards installed in the computer. One 3COM 10 Mb/s network card is used to connect to the LAN, and one piece is 100. The Mb/s RealTK NIC is used to connect to the Internet. However, when you use the ADSL1 M private line to connect to the Internet, after connecting the ADSL equipment, it is often found that the cable is faulty. After checking the ADSL equipment, there is no fault. It is found that each time the ADSL MODEM is re-switched, it can be restored to normal for a period of time. The time period is about 6 minutes to 11 minutes.

Analysis

According to experience, such faults generally start from the following three aspects: check whether the ground wire is connected, check whether there is magnetic field interference around ADSLMODEM, and check whether the ADSL line is unblocked. After inspection, it was found that the ground wire was normally connected, and the mains supply was normal. After moving the ADSL MODEM away from any electrical equipment, the dropout fault still occurred, indicating that it was not caused by electromagnetic interference; calling the telecommunication bureau also indicated that the line was unblocked. There is no fault on the line transmission.

After confirming the above three aspects, the possibility of external interference is eliminated, and then the computer hardware is checked. When checking the network card, the location of the two network cards is changed, that is, the 3COM network card is used to connect. Internet, using RealTK network card to connect to the local area network, found that watching movies stored on the server in the local area network is particularly slow, and often appears mosaic phenomenon, which infers that there is a problem with the RealTK network card, after replacing the network card, watching the movie is normal, it seems that it is really The NIC is causing trouble. Check that the network card finds that it is a poor quality product, and it can work normally when the data traffic is not large. When the data traffic is relatively human, there is a transmission failure, so that the reason for the ADSL drop failure is understood.

Exclusion Procedure

After you have identified the cause of the failure, replace the NIC again. Then connect the ADSL equipment and access the Internet. After a long period of testing, there is no fault of the dropped line.

示示

Anything that exceeds the limit it can withstand will cause many problems to occur. The same is true for NICs. Because the network card can work normally under the condition of small data traffic, when the DDN 256 K private line is used for the Internet access, the data traffic is increased after the Internet access is changed due to the small data flow and no failure. The NIC cannot load such a large amount of data traffic and thus fails, which causes the ADSL drop failure. Since the DDN line was not used in the past, it did not cause such a fault, which caused people to think that the NIC is normal, which makes the fault check more difficult.

Internet problems occur from time to time. It is very important to find out the cause. If you find out the reason, it is not far from solving the problem, and the problem of the network card is often ignored, so if you find it next time, If you encounter this problem, remember to take into account the NIC problem.