Data center cabling method summary (1)

The data center wiring method is as follows:

Q: In this case, the office building is too wide and the internet access point is on the far left of the building. internet access should be available on each floor, what should we do if it is faster?

A: The distance between balanced twisted pair wires and data applications is 100 meters. This is defined by international standards. Transmission of network signals over a distance of 100 meters will depend on the performance margin of the cabling system, the performance margin of network equipment, and on-site construction conditions, there is no quantifiable indicator and it cannot be guaranteed. For the case you mentioned, the standard practice is to set up two Telecommunications rooms on one floor, and horizontal cables are divided into areas to connect to the corresponding telecommunications room, ensure that the horizontal link (from the distribution frame to the information outlet) length does not exceed 90 meters.

Of course, you can also use high-performance, high-quality cables and modules for direct point-to-point connections (over 100 meters). However, this line does not guarantee network application support, that is to say, it may support xDSL or 10BASE-T signals, but it may not support higher speed.

A: The wiring design standards must be followed. If it is too long, you can add a relay in the middle. For example, you can use a switch or hub to connect two network cables. Do not take the risk of being too long. This will bring uncertainty to network communication.

Q: there is a network port in our company that is located on the floor switch. After testing the switch, network port, and the line that is separated from the floor switch, there is no problem with the computer, however, the problem is that only the package can be sent and the package cannot be received. It is useless to change the number of computers. Is the connection line between the main switch and the switch on the floor damaged when cabling?

A: It seems that there may be a line problem, provided that the switch port and the computer port can normally send and receive packets on other lines. It is recommended that you use a wiring tester to test the channel transmission performance of the line, including the jumpers at both ends, connectors at both ends (distribution frames and information sockets) and cables, select 5E or 6 according to the actual situation. At the same time, make sure that the Jumper used meets the line sequence standard of T568A/B.

Q: What are the special requirements for Fiber Channel cabling in the data center machine room?

Answer: The optical cable channels in the data center are mainly used for 10-ge networks. Pay attention to the following points when selecting:

Transmission Distance: OM3 multi-mode optical fiber is 300 m-550 m, and single-mode optical fiber is 10-40 km

Use fiber connectors and adapters for SC, LC, or network device port type

If an open cable tray is used for laying optical cables, the corresponding fire rating should be reached (a level or B level data center)

The position of the optical distribution module (such as the top of the cabinet, the open cable tray, the rack with the wiring header, and various wiring cabinets)

Q: Our company has a three-storey building with 80 to 100 computers on each floor. The computer distribution area on each layer is over 300 square meters. In this case, how can I do this to easily and effectively complete network cable layout. Currently, it is relatively vague to place a layer-3 switch in the center area of each layer, and then connect the three switches through the PC server for network sharing, and then implement Internet access through the router. I don't know if this works?

A: In the switching network architecture, an aggregation switch should be set up on the basis of a layer-3 switch. The aggregation switch Access Server serves as the data resource sharing platform for network users, then the aggregation switch accesses the Internet through the appropriate router. Note the following:

The wiring network architecture is compatible with the computer network architecture;

Note that horizontal Cables cannot exceed 90 m in length during floor wiring rooms;

The level of the cabling system conforms to the transmission bandwidth of the Ethernet switch. It is recommended that over 5 or 6 types of cabling systems be used horizontally, multi-mode optical fiber (OM3) is used as the trunk, and corresponding wiring modules are configured;

A detailed diagram of the cabling system architecture should be developed and the interconnection relationship with the network facilities should be clearly indicated.