Improper cabling affects LAN speed

Wiring problems affect the speed of Internet cafes

Internet cafes now use faster and faster CPUs, more and more advanced switches, and faster access methods. Basically 90% of Internet cafes have used at least 10 MB of bandwidth fiber. Factors that affect the network speed of Internet cafes cannot be ignored. For Internet cafes, the speed of the network directly affects the economic benefits of Internet cafes. If we increase our network transmission speed, we need to solve the problem.

Factors that affect the speed of the LAN are generally caused by small issues that some non-professional Cabling Technicians do not pay attention to. Therefore, in the design of Internet cafes, we mainly pay attention to the following factors:

1. Integrated Wiring Design:

During the wiring design, you must design the switch, especially the installation location of the main switch. The common cat5e twisted pair wires have a theoretical transmission distance of no more than 100 meters, which is about 95 meters, therefore, when installing a vswitch, you must take the minimum distance as the location for installing the vswitch. The Inter-switch cascade can prolong the transmission distance of twisted pair wires, which does not mean that the network cable can be extended infinitely. After four cascade switches, the signal is lost and the transmission capability is lost. Therefore, when designing integrated wiring, we must consider the transmission distance of the network transmission medium. The longer the distance, the larger the signal loss, and the lower the transmission quality.

2. network transmission media selection:

Currently, the main network transmission medium is a network cable, which is commonly known as twisted pair wires. When selecting a network cable, it is best to spend more money to buy an authentic cat5e network cable. If you feel that the AMP network cable is too expensive, you can consider other Chinese brands, but be sure to pay attention to the network cable quality, test it in advance. In a MB network environment, it is recommended that files are transmitted between two machines, which is normal at around 10 MB.

I need to explain the concept of network transmission speed. What we usually call the optical fiber bandwidth, such as a 10 MB optical fiber, is that the optical fiber transmission bandwidth is 10 Gb/s. What we usually call hard disk data transmission speed is megabytes, such as the DMA66 hard disk, the transmission speed per second is 66 megabytes. A byte is composed of eight digits. Therefore, the maximum download speed of a 10 MB optical fiber can theoretically only reach MB, and the network loss, that is, about 1 MB, is normal. Many of us think that the download speed of a 10 MB optical fiber can reach 10 MB, which is incorrect.

3. Network Connection media selection:

Similarly, as a connector to connect NICs and network cables, it cannot be used too often. Some bosses use a few cents a connector to save money, saving money, putting a stumbling block to your business. The choice of the crystal head, generally choose a crystal head of about 1 yuan, if there are conditions, you can choose the real AMP crystal head. The network cable is actually an electrical signal transmitted. if the quality of the crystal head is too poor, resulting in poor contact, affecting the transmission effect.

4. Reasonable cabling:

When wiring, check whether there is any interference source nearby, and try to avoid the same line slot as the air conditioning line and power line.

5. network cable practices:

Many wiring staff randomly put the network cable on the card in a line Order, which is a major factor affecting the network speed. The network cable has two Connection Methods: 568A and 568B. The commonly used wiring method is 568B. After carefully studying the line sequence, we can see why the line sequence of 568A and 568B can achieve the fastest network speed. According to the wiring rules, the correct line Order of Line 1 to line 8 is:

1 orange White 2 orange 3 green white 4 Blue 5 blue white 6 green 7 brown white 8 Brown

We use line 1236 and line 568B for transmission. Line 13 is responsible for sending data and line 26 is responsible for receiving data. When we turn on the twisted pair, we can see that line 12 is wound, and the current direction is the opposite. This can offset interference and achieve the maximum network transmission speed. Similarly, the principles of Line 36 are the same.

6. Switch selection:

With the increase of online games, the data exchange volume is gradually increasing, and the data exchange requirements for Internet cafes are getting higher and higher. Therefore, when selecting a switch, you must select a switch with a fast network speed. Currently, the network environment has generally adopted a 10-gb environment. Therefore, the master switch must adopt a Gigabit Switch. Reasonable switch selection can avoid network bottlenecks and greatly improve the network transmission quality.

7. routing device selection:

When selecting a routing device, we can choose proxy server, hardware router, and software route. Each owner can select an appropriate routing device based on their actual situation. The lowest technical level is the proxy server, which generally uses 2 K or 2003 as the proxy server. There is also a problem that cannot be ignored. When using 2 K as the proxy server, many technologies adopt the sharing method, which affects the network speed. You can try to use the agent software to increase the network speed.