Shulou(Shulou.com)05/31 Report--

Hello, everyone. Lin Fei is here to answer the above questions. Many people don't know why the computer is slow. Now let's take a look at it.

What is the reason for the slow speed of the computer network? There are many reasons why computers are slow to surf the Internet. Here are some reasons that affect the slowness of computers surfing the Internet. If your computer is slow to surf the Internet, you can solve it according to the following situation. You can generally find the reason why computers are slow to surf the Internet. Generally speaking, our method of analyzing computer faults is the principle of "soft before hard".

What is the reason for the slow speed of the computer network?

First of all, the network itself

The server bandwidth of the target site you are connecting to is insufficient or overloaded. The solution is simple. Please go to another time or change the target site.

Second, the network speed becomes slower due to the problem of network cable.

We know that twisted pair is made up of four pairs of wires strung together according to strict regulations to reduce the impact of crosstalk and background noise. At the same time, in T568A and T568B standards, only four twisted pair wires (1, 2, 3 and 6) are used, of which 1 and 2 are used for transmission, 3 and 6 are used for reception, 1 and 2 must come from twisted pair, and 3 and 6 must come from twisted pair. Only in this way can we avoid crosstalk to the greatest extent and ensure data transmission. The network cable made according to the incorrect standard (T586A, T586B) has great hidden trouble. One case of 3360 is that the network speed is very slow at the beginning of use; in another case, the network speed is normal at the beginning, but after a period of time, the network speed slows down. The latter is obvious on desktops, but it is normal to check Internet speed with laptops. The slow network speed caused by the network cable not made in accordance with the correct standards is also related to the quality of the network card. In general, the network card performance of desktop computers is not as good as that of notebook computers. Therefore, when using the switching method to troubleshoot, using the laptop to check the normal network speed, we can not rule out the problem that the network cable is not made according to the standard.

Third, there is a loop in the network, which slows down the network speed.

When the number of nodes involved in the network is small and the structure is not very complex, this phenomenon rarely occurs. However, in some complex networks, there are often redundant spare lines, which will form a loop if they are inadvertently connected. For example, the network cable is connected to computer room 1 from the network center, and then to computer room 2 from computer room 1. At the same time, there is a spare line connected directly from the network center to computer room 2. If these lines are connected at the same time, a loop will be formed, constantly sending and checking packets, thus affecting the overall network speed. This kind of situation is hard to find. In order to avoid this situation, we are required to form a good habit when laying network cables. The network cable should be clearly labeled and records should be made where there is a spare line. When such faults are suspected, zoning is generally used to eliminate them step by step.

Fourth, the network speed becomes slower due to the hardware failure of network equipment.

With the increase of the number of computers in the network, the transmission efficiency of the network will decrease obviously. When the network card or network equipment is damaged, broadcast packets will be sent continuously, causing a broadcast storm and paralyzing network communication. So when the hardware of the network equipment fails, the network speed will slow down. When such a fault is suspected, the hub or switch can be replaced by replacement to troubleshoot the hub equipment. If these devices are not faulty, after turning off the power of the hub or switch, use the "Ping" command under DOS to test the computers involved one by one, find the computer with the faulty network card, replace the new one, and return to normal network speed. Network cards, hubs, and switches are the devices that are most prone to failure and slow down the network.

5. A port in the network forms a bottleneck, causing the network to slow down.

In fact, router WAN port and LAN port, switch port, hub port, server network card may become network bottlenecks. When the network speed slows down, we can use network management software to view the data traffic of routers, switches and server ports during the peak hours of network usage. You can also use the Netstat command to count the data traffic of each port. Based on this, we can confirm the location of the bottleneck of network data flow and try to increase its bandwidth. There are many specific methods, such as changing the server network

Worms spread through e-mail have more and more serious influence on network speed and do great harm. The virus causes infected users to keep sending e-mails as soon as they go online. The virus randomly selects files from the user's personal computer and attaches them to a random address in the user's computer address book to send e-mail. Hundreds of such spam messages are queued up, while others are returned in batches and piled up on the server. As a result, some backbone Internet is obviously congested and the network speed is obviously slower, which makes the local area network almost paralyzed. Therefore, you must upgrade your antivirus software in time; computers should also upgrade and install system patches in time, uninstall unnecessary services, close unnecessary ports, and improve the security and reliability of the system.

seven. Excessive use of firewalls can also lead to slower network speeds. Needless to say, uninstalling unnecessary firewalls can only retain one that is strong enough.

eight. Insufficient system resources. You may have loaded too many applications to run in the background. Please load the software reasonably or delete useless programs and files to release resources, so as to achieve the purpose of improving the speed of the network.

9. Too many airliners on the Internet lead to the slow speed of the Internet.

If there are many clients surfing the Internet, it is normal that the connection speed is too slow. Check whether the port connection speed set by the server system in "Dial-up networking" is the set maximum speed; whether the line is normal; you can improve the connection speed by optimizing the MODEN settings; and you can also speed up the Internet by modifying the registry.

The trunk line is congested, resulting in slow network speed.

It is a common phenomenon that there are so many people browsing a web page that the network speed is slow. The only way to solve this problem is to avoid the rush hour and choose another time to visit the website you need to see.

This is the reason for the slow speed of the computer network, which was introduced by Bian Shaw. I hope I can help you. More information about the speed of computer networks

At the end of this article, I hope it will be helpful to you.

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