Shopping: Choose Gigabit or 100MB according to the actual situation, and it is best to choose a dual-band Wifi device.
Router installation >> Router maintenance >>
The role of the switch: the higher the bandwidth of the backplane, the better. Select the port density, switching mode and port type according to the actual situation.
Optional: The higher the backplane bandwidth, the better. Select the port density, switching mode and port type according to the actual situation.
Switch installation > > switch maintenance > >
The function of network card: it is the interface between computer and transmission medium in LAN.
Purchase: first understand the main chip, the higher the transmission rate, the better.
Network card installation >> Network card maintenance >>
Function of optical fiber transceiver: exchange of short-distance twisted pair electrical signals and long-distance optical signals.
Optional: Support full-duplex and half-duplex, with safety equipment to prevent data packet loss, in line with IEEE802.3 standard.
Optical fiber transceiver connection >:> Maintenance of optical fiber transceiver >:>
The role of the server: providing computing services, responding to service requests and processing them.
Shopping: choose brand products, and then choose models according to demand, taking into account rationality, expansibility, safety and reliability.
Server maintenance >>
Network cable function: necessary for connecting LAN.
Optional: twisted pair is cheap and widely used, among which CAT7 is the latest product.
Network cable connection > >
The function of optical fiber welding machine: it is mainly used for the construction and maintenance of optical cables in optical communication.
Optional: Knowing the proper number of optical fiber cores, the shorter the welding time, the better.
Maintenance of optical fiber welding machine >:>
The server cabinet is used to assemble and install panels, plug-ins, boxes, electronic components, devices and mechanical parts.
Optional: good stress structure, good temperature control system, dustproof and waterproof, electronic shielding.
Server cabinet installation >; & gt
The function of the network card: use the SIM card of the mobile phone to connect to the Internet wherever there is wireless telephone signal coverage.
Shopping: Try to choose something convenient to carry, which has two characteristics: fast speed and stable signal.
Workstation function: a high-end general-purpose microcomputer with powerful information and high-performance graphics and image processing function.
Purchase: Consider the degree of support for multiple processors and different operating systems, and consider the applicability and compatibility with other devices.
Workstation configuration > >
Mobile portable wifi function: a device that converts wired, 2G, 3G, 4G network or Internet connections on a computer into WiFi signals.
Purchase: Internet chips include communication, mobile and telecommunications. It is said that telecommunications is better, and then choose a well-known brand.
The function of modem is to translate the digital signal and analog signal of computer and complete the communication between two computers.
Purchase: Choose a good main chip and support the V.92 protocol. You'd better buy an external modem with a serial port.
The role of wireless AP: large wireless coverage.
Optional: 802. 1 1b/g is the most commonly used small wireless LAN, and the transmission speed and coverage area are selected according to the actual situation.
The role of repeater: to extend the network transmission distance by forwarding or forwarding data signals.
Purchase: clearly understand the model, material and specifications, and it is best to choose a dual-frequency repeater.
The function of the hub is to regenerate, shape and amplify the received signal, so as to expand the transmission distance of the network, and at the same time concentrate all nodes on the node centered on it.
Optional: Select the appropriate transmission bandwidth and the number of connection ports provided to see if it can be stacked and cascaded.
The function of a bridge is to connect multiple network segments at the data link layer.
Purchase: Choose the appropriate bridge type according to your own needs, preferably dual-frequency.
Home network system General home network system is equipped with access equipment (light cat, TV box) in addition to broadband access of operators. Just install a main wireless router (that is, it can be used as a router and switch) to meet the needs of home wireless WiFi coverage. If the wireless network coverage is not enough, you can provide another AP, which can be wired AP, wireless AP and wireless router.
The wiring construction of the network system mainly ensures that there are network panels in the living room and room. Users can mainly ensure that each large room can reserve a network node according to the daily design arrangement.
Living room: It is recommended to install at least 2 (TV, set-top box or HTPC).
Each room: 1 (TV or computer networking)
Study room: It is recommended to install at least two, and if possible, it is recommended to install four (computers, NAS hosts or monitoring NVR hosts).
Dining room or kitchen: 1 (networked appliances) reserved.
Surveillance camera: according to the location to be installed, it is best to reserve it when laying cables, and the stability of using network cables will be much better.
It is the first priority for the network system of small and medium-sized enterprises to understand the layout of the whole office. Small companies generally have about 5 to 20 people, which are roughly divided into three areas: office area, meeting area and boss's office. Networking is mainly divided into wired networks and wireless networks. Wired network is mainly used for office external communication, and wireless network is mainly used for wireless link network. To consider wireless coverage, there will be no dead ends in the office area. If the company layout is complex, wireless bridging can be considered to meet the network requirements.
Many small companies don't build enterprise servers, which is unnecessary. It's actually very important. The most important thing is to store all the data of the company. View details >>
Campus network system and campus network equipment in colleges and universities
You need a router switch, the two most important things. Routers are connected to the external network, followed by switches, and connected to terminals and various servers through distribution frames. This is the simplest network. Without considering anything else, the equipment to be used is: router, switch, distribution frame, twisted pair, RJ45 interface module, RJ45 crystal head, server and client PC.
Constructing campus network system
Campus network should have the characteristics of flexible use and simple management, and should also have good expansion ability. There are 1 information nodes in each dormitory, and an access layer switch is installed on each floor. Suspended racks are selected for each floor, and wiring closets are set on the first floor. Each classroom provides 1 network node, and each floor also uses an access layer switch, and the wiring closet is set up on the first floor for convergence layer switch. View details >>
Hotel network system hotel network equipment
The establishment of a stable and practical wireless network requires the selection of appropriate networking equipment. A complete wireless network solution includes routers, switches, PoE devices, AP, AC controllers and other devices. Due to the different scale and requirements, the equipment required in different hotel network schemes may be different.
Constructing hotel network system
Wireless controllers AC and FITAP are used for deployment. Common single-frequency ceiling wireless AP can be used in lobby and restaurant, which can meet the wireless coverage in most areas and meet the basic use, and dual-frequency ceiling wireless AP can be used in lobby and restaurant. The access environment of guest rooms is dense and there are many walls, so the attenuation of wireless signals is relatively large. The AP team suggested deploying one in each room. View details >>
Internet cafe network system Internet cafe network equipment
Network equipment: optical fiber access equipment, routers, switches, junction boxes, network cables and crystal heads.
Hardware equipment: common desktop, game server, charging server.
Constructing Internet Cafe Network System
Before you start network wiring, you should draw a structural sketch. Confirm the placement method and location of each computer, and then indicate the node location (that is, the placement location of each computer) on the map. According to the distribution of nodes, the placement position of the network hub is determined. Pay attention to the placement of gateway servers (that is, networked computers) in line with the home direction of network telephone lines, because the shorter the telephone lines, the better. Then you can start wiring. View details >>
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