Data center cabling method summary (5)

WiringThe methods are summarized as follows:

Q: there are more than 200 computers in the company. If you want to control the network storm, do you want to place a layer-3 Switch on each floor as a VLAN? After you connect to a common switch, connect to a primary layer-3 Switch for VLAN.

A: Of course, the first method is better, but it will increase the cost. In addition, if you divide VLANs very carefully, you need to add routes because the host between VLANs cannot communicate with each other. There are many ways to prevent broadcast storms, not just VLAN division.

Q: although the power cables, optical fiber cables, cables, and category-5 cables of our IDC are neatly arranged, they are all stacked in the same cable trough. Is there any hidden danger?

A: I must say that there are potential risks. Power cables may have potential impact on data cables. Copper cables are bundled neatly and have a good appearance, but they have potential impact on Transmission Performance. The stacking of various cables in the same cable trough is too high, because the self-weight of the cables will compress the lower-layer cables, which may affect the performance. It is difficult to change or organize various cables during future maintenance, which is not conducive to management.

Q: Can I recommend a cat5e network cable testing tool? What are the best suggestions for later network transformation? How can we make network cabling easier in the future?

A: There are two types of test tools. One is a tool that only performs simple connectivity verification. This tool cannot perform performance authentication according to wiring standards, and cannot produce detailed reports on the analysis results. The other is the cable-certified tester, which is provided by FLUKE, an American company, and IDEAL, an IDEAL company. Currently, Fluke's DTX series instruments are more common on the market. The DSP4000 series are earlier models. You mentioned that if you want to evaluate the performance of cat5e cables, you should select a cable certification tester.

Q: Could you tell me the next few experts? Our company wants to set up a LAN. we originally planned to use the AMP network cable, but we are afraid to buy too many fake products on the market. Now we want to switch to Simon's network cable, I don't know how Simon's network cable works. Is it suitable for building a large lan?

A: The components of the cabling system should contain two parts: cables and wiring modules. They should also be a branded product. Pay attention to the following issues during procurement:

First, the supplier department can issue and provide the sales authorization documents of the brand manufacturer and the product performance technical indicators (refer to the wiring level selected for the project design-for example, Category 5/Category 6/Category 6A ). wiring System, included products, links and channel indicators)

The most intuitive test instruments of the appropriate level can be used to purchase products in accordance with the permanent link connection model (in the Integrated Wiring System Engineering acceptance specification "GB50312-2007 has a detailed description (inspection and testing, compare the index parameters of the test results with the data provided by the manufacturer's product manual. The value should not be lower than the value of the product description.

It should be noted that, whether it is a brand product, as long as the indicators meet the standard requirements, they can be used in your project, only the product indicators of each manufacturer can be much higher than the indicator values specified by the standard, which is different. In addition, we should also consider the cost-effectiveness factor when determining products. Of course, you are considering using Simon's product. If it is not fake, it will not be a problem in the application of large-scale LAN.