Design and construction of Internet bar network wiring

Internet network integrated wiring and Internet cafes power system wiring is more complex, not only to consider the network wiring, but also take into account the installation of network equipment location, network communication media selection and other factors.

First, the network wiring design
Network cabling must be designed according to the network structure of the Internet bar. At present, Internet cafes are generally routers--the main switch--switch--the client's network mode. Before the network cabling design, must understand the following two basic knowledge:

First, twisted pair of the longest communication distance: At present, the most used in Internet cafes is super five twisted pair, theoretically its point and point between the largest communication distance is 100 meters, and actually only 95 meters. Therefore, in the design of Internet network cabling, it is advisable to measure the actual distance between the point and the point first.

Second, the largest number of cascaded switches: for some of the larger Internet cafes, the number of machines and decentralized location, switches are often required cascade, and the maximum number of cascaded can not exceed five. In other words, twisted pair can extend the transmission distance with the help of the cascade of the switch, but in theory the maximum can not exceed 500 meters. ---http://bianceng.cn (computer science)

Second, wiring construction and matters needing attention
1, twisted pair: According to the network wiring standard, twisted pair has 568A and 568B two kinds of standard access, the current use of the most extensive access is 568B access method. Since network devices are now intelligent devices that support 568A and 568B two of wiring standards, it is recommended that 568B wiring standards be used. 568B wiring Standard, the definition of the standard line is: orange white, orange, green white, blue, blue white, green, brown, Brown, from left to right is line Line 1 to line Line 8; 568B wiring Standard is the crystal head of both ends of the use of standard line sequence.

2, the choice of quality clearance Crystal Head: Select the crystal Head, mid-range brand can, but remember not to choose low-grade inferior goods. Poor quality crystal head after a long period of use, inside the metal card network cable easy to contact bad, resulting in poor network transmission.

3, switch location: whether the main switch or level two switch, in the selection of installation location, the switch must be placed in the middle of the node, on the one hand can save the use of network cable, in addition, the transmission distance can be reduced to the shortest, so as to improve the network transmission quality.

4, reasonable distribution of twisted pair: wiring, you can put twisted pair of PVC pipe or professional line slot, twisted-pair line through the place, as far as possible not to have strong magnetic field, large functional electrical (air-conditioning), power lines, etc., otherwise it will greatly reduce the quality of network transmission.

5, try to put the backup line: twisted pair have a certain service life, coupled with the impact of natural conditions, twisted-pair line damage is normal, so the network wiring, for the main switch from the primary to the two-level switch between the Cascade line, at least 1-2 of the fabric to put the backup line. Switch to the workstation between the twisted line, according to the actual situation of internet cafes, cloth put a certain number of standby lines.

6, the line is numbered: network wiring, each twisted pair to do a number, and twisted pair of ends to do the same number. For the convenience of future maintenance, the twisted pair is also numbered at a certain distance, especially for long twisted-pair wires.

Tips: Network wiring, twisted pair of ends, it is best to set aside 2-3 meters of rich length, crystal head failure of this line there is the value of reuse.

Third, testing
1, network cable test: The layout of the network cable, Crystal Head installed at both ends, immediately test the line with the Web tester can work properly. If not, you can determine the crystal Head and network cable connection is not good, this needs to redo crystal Head and test, until the network cable can work properly.

2, Network equipment testing: Network equipment installed after the installation, power to test. Test all network devices including whether the cable is working properly, then test the network transmission speed between point and point, and finally test the network transmission speed of a bit to many points.

3, comprehensive testing: testing the external network and Internal network interoperability performance, mainly include the following: Download speed test, network game smooth degree, online theater fluency and so on. If you find a problem in your test, look for the reason carefully and exclude it.