What network equipment are needed to open an Internet cafe?

Abstract: With the development of the Internet, operating an Internet cafe has become one of the rare business opportunities. From an economic and practical point of view, pulling an optical fiber from the outside of the Internet cafe allows all computers in the Internet cafe to It is also necessary to enjoy Internet resources. So, how to establish an Internet cafe LAN? To establish a local area network, you first need to use a star network, that is, connect each computer through a network hub. Next, let's take a look at the relevant knowledge on how to build an Internet cafe LAN. I hope it can help you. What network equipment are needed to open an Internet cafe? Network equipment (fiber connector, router, switch, wiring box, network cable, crystal head)

Hardware equipment (ordinary desktop, game server, paid server)

How to build an Internet cafe LAN 1. Use a star network, that is, connect each computer through a network hub.

2. Preparation work Before starting network cabling, you must first draw a construction diagram. Confirm how and where each computer is placed, and then mark the node location (that is, the location of each computer) on the diagram. Determine the location of the network hub according to the distribution of nodes. It should be noted that the placement of the gateway server (that is, the computer that connects to the Internet) must match the entry direction of the Internet telephone line, because the shorter the telephone line, the better.

3. Start wiring. The first step is to "lay out the cables", determine the distance between the network hub and each computer, intercept the network cables of corresponding lengths, and then thread the network cables through pipes (PVC pipes). You can also run the wires directly along the wall without passing through the pipe. It should be noted that the length of the twisted pair (network cable) must not exceed 100 meters, otherwise a repeater must be installed to amplify the signal.

The next step is to "make a network connector", which is to make an RJ45 twisted pair connector. Before describing how to wire correctly, we must first explain the numbering rules of the 8 twisted pairs. The numbering sequence is defined as follows: put the side of the RJ45 with the clip downwards, and the end of the 8-wire gold-plated pins upward. From the left, they are 12345678. Let’s talk about the so-called “1, 2, 3, 6” connection method. "1, 2, 3, 6" are used for uplink and downlink data transmission. 1, 2 and 3, 6 are each a pair. We only need to use a pair of twisted wires for 1 and 2, and a pair of twisted wires for 3 and 6. That's it. As for the colors, they just need to be the same. If the above connection method is not used, you can also connect the 8 wires individually. The specific method is as follows: Hold the RJ45 crystal head in your left hand and the wires in your right hand. Connect them in the order of brown, brown-white, blue, blue-white, green, green-white, orange, orange-white. Insert it and clamp it with wire clamps. Under normal circumstances, special wire clamping pliers should be used for wiring (some experts can use needle nose pliers instead, but for the majority of novices, RJ45 crystal heads are 2 yuan each, so it is better to use special wire clamping pliers for insurance). After connecting the wires according to the above method, clamp the RJ45 crystal head with wire clamps and press it firmly. It should be noted that the creasing line must be pressed to the bottom, usually two to three times is enough.

Then, connect the prepared connector to the network card. Please note that when inserting the connector into the network card slot, insert it gently and parallelly until you hear a "click" sound to ensure that the connector is in good contact with the network card.

Insert the connectors at both ends of the network cable into the network card and network hub respectively. In this way, the wiring work is basically completed.

4. Networking, detection and fault diagnosis The next step is the specific networking work, including physical connectivity and peer-to-peer interconnection of computer operating systems. It is very simple to judge whether the computer is physically connected: just check whether the indicator light of the network card or the corresponding indicator light on the network hub is normal. Generally, the green light on the network card indicates network connectivity.

Physical network connectivity alone cannot make the entire network work. You must configure the network for each computer. First you need to install the network card. Network cards can be divided into two types according to bus standards: PCI and ISA. If you buy a PCI network card, there will generally be no problems during installation and settings; if you buy an ISA network card, you may encounter hardware device conflicts during the installation process. At this time, you can use the diagnostic program in the network card driver disk to resolve the problem. Reset IRQ and I/O. Insert the network card into the motherboard and after restarting the computer, you also need to set it up in Windows. Select "Add" → "Adapter" in the "Network" option of "Control Panel", then select the manufacturer and network card model. After pressing "OK", the added network card device will be displayed in the network window, and the corresponding network card device will also be installed. Network protocols and network clients.

Note that you only need to install the TCP/IP protocol, Microsoft network client, file and printer sharing. Double-click "TCP/IP Protocol" and fill in the local IP address, subnet mask, gateway address and DNS server IP address in the pop-up IP dialog box.

Open the "Identification" tab in the network dialog box. This is where you give the machine a network name and divide it into workgroups. Fill in the network name of the computer in "Computer Name", and others can use this name to access your machine in "Network Neighborhood"; then fill in a workgroup name in "Workgroup", and the name of the workgroup in the same LAN The names must be the same.

Now check whether the network is connected. Double-click "Network Neighborhood" on the Windows desktop. If you see your own and other computer names in the window that opens, it means that the network is connected.

If you cannot see the computer name in "Network Neighborhood", you can diagnose according to the following steps:

1. Check whether the network is physically connected.

2. If you just cannot see your own machine name, check whether the "File and Printer Sharing" service has been added.

3. If you are the only one in "Network Neighborhoods", first ensure that the network is physically connected, and then check whether the workgroup name is consistent with other computers.

4. If you can't see anything, it may be a problem with the network card settings. Recheck the network card settings, or try another network card.

5. Use Ping, Tracert and other network detection tools to diagnose. Due to space limitations, I will not explain it here.

5. Access to the Internet Currently, the more economical Internet access method is to use Modem or ISDN dial-up to access the Internet. This is also the preferred access method for Internet cafe owners. Of course, if you have higher grade requirements, you can also choose DDN dedicated line access. Designate a computer as the gateway server in the Internet cafe. After dial-up Internet access, other machines in the LAN can enjoy the dial-up connection of the machine. To enjoy the Internet, you only need to install the TCP/IP protocol in all Internet-connected machines and install the proxy service software in the gateway server.

Using a proxy server has two benefits: first, its large-capacity cache can be used to increase Internet speed; second, it can act as a firewall. There are two types of proxy server software: one is a "cache" proxy server with caching function, such as Wingate, Winroute, MSProxy, etc.; the other is a simple "gateway type", such as Sygate, WIN98SE Internet connection in *** enjoy and so on. Here is a brief introduction to the installation and use of Internet connection sharing for WIN98SE (WIN98 second version).

1. Install the Internet connection private service in WIN98SE

First ensure that the LAN inside the Internet cafe is connected, and then select a computer as the gateway machine. Install the WIN98SE version of the operating system on the gateway machine, and install the Modem or ISDN at the same time to ensure that the dial-up Internet access of the machine is normal. The method to add Internet connection sharing is very simple. Select "Internet connection sharing" in the "Internet Tools" option of "Windows Installer" and follow the prompts to install it. The IP address is set to 192.168.0.1.

2. Client computer settings

In the fourth part of this article "Network, Detection and Troubleshooting", the computer networking settings have been introduced. Follow the above The method can be set. The most important point is to specify the gateway address as 192.168.0.1, which is the IP address of the gateway machine. In addition, the DNS server IP address can be set to the DNS server provided by the ISP, such as: 61.128.128.68. Use the Ping command on the client computer to check whether it has accessed the Internet through a shared connection (Figure 5). If the ping succeeds to the specified IP on the Internet, it means you are done.

VI. Precautions for setting up and maintaining Internet cafes 1. The installation and settings of ISDN are not much different from ordinary Modem. However, if you want to use 128K speed to access the Internet, you need to connect to the established ISDN dial-up network. Double-click "Properties" on the connection, select "Multiple Links", "Use Additional Devices", "Add", select "ISDNLine1", and then redial the Internet after confirmation.

2. Usually when a Modem is connected to less than 20 computers to enjoy the Internet, the speed of browsing the web and chatting is almost the same as the speed of a single computer. However, it should be noted that it is best not to allow several computers to download online at the same time, because simultaneous downloading by multiple computers will seriously reduce the speed of the entire network.

3. For operators whose own level is not very high, it is still necessary to install some Internet cafe management software such as "Internet Cafe Management Expert", "Meiping Security Guard" and firewall software.

4. After the Internet cafe operates normally, the network needs to be checked regularly. The devices most prone to problems are network hubs and network cards. Therefore, it is best to have a spare network hub and network card. Once a problem is discovered, it can be replaced in time without affecting the normal operation of the Internet cafe.