Solution to long network cable distance

Source: Internet
Author: User

Generally, the theoretical distance of Category 5 network cables cannot exceed 100 meters. If the network cable is too long or light, the signal is unstable, and the Internet access speed is slow. If the network cable is heavy, there is no signal. To address this problem, I have summarized several solutions:
I. Using six types of network cables, although similar to the transmission distance of over five types of network cables, the six types of network cables are of good quality, strong crosstalk prevention, and support for gigabit network transmission speeds, there are too many inferior 5 cables on the market, such as aluminum and copper clad iron cables.
2. Installing a switch or relay between the Network cables will play a certain signal amplification effect. The distance is too long and only optical fiber is considered.
3. If the distance exceeds a large number, but the signal is unstable, you can try to reduce the network adapter transmission rate, that is, to reduce the network adapter transmission rate from Mbps to 10 Mbps. This generally solves the problem. Setting Method: Open the Device Manager and find the NIC Driver. Right-click Properties and choose transmission mode from the Advanced tab.
 
Common network cables in Lan are twisted pair wires, coaxial cables, and optical cables.
Twisted Pair wires are widely used because of their low prices, such as common telephone lines. It is used to connect to the RJ45 crystal head. It has two types of unshielded twisted pair wires (UTP) and shielded twisted pair wires (STP). The price of UTP twisted pair wires is generally about 1 m and 1 RMB, while STP twisted pair wires may be, the price is a few yuan, and the price may be more than 10 yuan. We usually use UTP.
 
Network cable transmission distance: twisted pair wire 100 meters,
Generally, no more than 90 meters of Category 5 Non-shielded cables are allowed to access the Internet, but because the line is too long, it may cause signal attenuation, packet loss, and other problems. If the problem is not serious, it will not affect the internet access. However, if the line is longer, the signal will be weak, packet loss is more, or even cause a failure to access the Internet. The specific length of the packet will lead to a failure to access the Internet. This is not measured in detail, and is related to the use environment, wire quality, and so on.
 
Face the crystal head metal slice (with a small tail on the back, down), from left to right
1 2 3 4 5 6 7 8
568A standard: white, green, white, orange, white, blue, white, brown
568B standard: White orange white green blue white blue green white Brown
 
When the two ends of the twisted pair use the same standard, it is a direct connection, also called a direct connection, used to connect a computer to a switch, HUB, and so on.
When different standards are used at both ends of the twisted pair, the cables are used to connect computers, computers, switches, and switches.
This article comes from: Happy revenge's Blog

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