Sand field Vanguard: Collection of networking equipment procurement for Internet cafes (1)

Internet cafes are large public Internet sites with a large number of Internet users, which brings a great burden to the network, you must select the corresponding network device according to the actual situation. From the perspective of Internet access, there are no doubt two network cable and wireless networking solutions for Internet cafes. network cable networking is still the most common method, but according to the internet cafes of different sizes and grades, the requirements for network devices are also different. In general, small-scale Internet cafes are mainly engaged in daily online entertainment due to their limited economy. Basic network devices such as NICs and routers can be used ), for medium-sized or large Internet cafes to face more mainstream applications, some auxiliary network devices such as firewalls and servers must be used ). What is the specific role of network devices in Internet cafe networking? Under what circumstances will the corresponding network device be used?

I. dedicated wireless devices for Internet cafes

In order to meet the needs of special users and increase the third-party income of Internet cafes, many Internet cafes come with other business projects, such as providing a place for leisure activities such as drinking drinks and coffee, wireless Networking is often used in this area to improve the level of Internet cafes.

1. Wireless Network Card

In order to reduce investment, most wireless Internet access zones in Internet cafes still use LCD desktops. The desktop is cheap, with superior performance, strong scalability, and better heat dissipation. It is suitable for Internet cafes to work for a long time. To connect a desktop computer to a wireless access point, you need a wireless network adapter. After all, the desktop computer basically does not have a built-in wireless module. Generally, the desktop can choose between PCI and USB wireless NICs, but considering the internet cafe environment, you should choose PCI wireless NICs, after all, it is safer to install in the chassis, after the USB wireless network card is inserted into the host, it is easy to be stolen by some insecure Internet users. For some high-end casual Internet cafes, in order to attract white-collar employees and business travelers, we will also consider using laptops. Mainstream laptops are basically built with wireless NICs, you can directly connect to a Wireless AP or a wireless router.

2. Wireless Router

Wireless routers are suitable for small and medium-sized Internet cafes. For example, an internet cafe with 150 computers wants to separate 50 computers to form a wireless Internet zone. In the access mode, 10 M optical fiber access can be selected for the 100 wired network areas. To save costs, the 50 wireless network areas generally use 4 m adsl access. At this time, you must use a wireless routing device, considering that the location of the wireless network is concentrated, the distance from the bar management is not far away. Ordinary wireless routers are sufficient for signal coverage, and wireless routers are cheap, to complete the wireless routing function of 50 computers in the room, we recommend that you select the mm-speed product to connect ADSL to a wireless router and a wireless router to a management host during use, manage and set wireless route parameters on the host, and set wireless network card for other computers.

Figure 1 wireless routers suitable for Internet cafes

3. Wireless AP

For mainstream Internet cafes with 200 or more than 300 sets, in order to improve the speed of Internet cafes and facilitate management, one m optical fiber or two m optical fiber cables are generally used for access, these Internet cafes seldom use ADSL access. In this way, all the computers in the internet cafe are managed by a host, and the optical fiber access area needs to use a network firewall or router for routing. The entire network resources are interconnected, if you want to separate 100 computers for wireless Internet access, because the optical fiber access area already has a routing device, the wireless router is not suitable for use here. In this case, you must select a Wireless AP, the wireless access point is used for wireless coverage by connecting the Wireless AP to the routing device or switch, and the computer in the wireless access area can connect to the Wireless AP through the wireless network card.

Figure 2 Wireless AP connected to the internet cafe router Device

4. Wireless Switch

The competition in the internet cafe industry is fierce. As more and more office and leisure activities enter the Internet cafe, the real wireless Internet cafe is born. Wireless Access can improve the brand and image of Internet cafes, in the wireless networking of Internet cafes, wireless networks and gigabit optical fiber networks are generally combined. Although wireless APS can complete wireless networking, wireless APS must be managed one by one; it is impossible to view possible network attacks and interference throughout the system, which affects the Load Balancing Capability. Moreover, Wireless AP cannot distinguish between real-time applications such as wireless voice and data transmission applications. If an access point is stolen or damaged, security is not guaranteed. If you use a WLAN wireless switch as the core and then use a simple access point for centralized management, the wireless Switch replaces the location of the original L2 Switch, which is very suitable for large and medium-sized Internet cafes with growing access points around 300 points.

Figure 3. D Link DWS 3000 wireless Switch