About CDNcontent distribution Network (contents delivery network or distribution network, abbreviated: CDN) refers to a computer network connected to each other via the Internet, using servers closest to each user, faster, More reliably send music, pictures, videos, applications, and other files to users to deliver high-performance, scalable, and low-cost network content to users.
The total load capacity of the content distribution network can be larger than the maximum bandwidth of a single ba
How to differentiate between dual-screen and unshielded Network cables and dual-screen network cable shielding
As a part of the Integrated Wiring Design and Construction, the network cable is the basic medium for most information transmission systems. Its importance is self-evident. What is the main role of this article in resolving and shielding the network cable? What is twisted pair wires? What are STP, SFTP, UTP, FTP, and ASTP? What's the cat5e dual-shielded network cable? What is a cat5e s
Before the emergence of the cat6 system, the traditional four-to-eight-core copper cable system had only five or more transmission performance levels, and the system's transmission bandwidth was only 100 MHz, the bandwidth requirements of the new six-category system will exceed 150% of the traditional five-category/super five-category system. To meet this new requirement, a large number of electrical parameters, especially crosstalk parameters, that w
, the data is marked with "*"), and the test result is not highly reliable. It should be pointed out that the test value and the noise background should have a certain margin. Here, we provide a 3 dB margin requirement.
A. Relationship between CAT5e and CAT6 digital cable attenuation tests with A cable length of 100 m and 30 m with Noise Floor.
Table 1
It can be found that such a system is credible when testing the electrical
With the continuous development of information technology and bandwidth applications, the transmission technology of 10g utp cabling is also rapidly changing. Now, the IEEE 802.3an 10GBASE-T standard has pushed the 10 Gbit/s UTP cabling age of 10 Gbit/s copper cables to the public. We believe that in the near future, 10g utp cabling will become the first choice for enterprises.
UTP copper cable has been widely used as a cost-effective transmission medium since Bell Labs developed the first twist
This article gives you a detailed explanation of Several misunderstandings about the requirements of the Integrated Wiring System. Many people may not be familiar with the requirements of the Integrated Wiring System. It doesn't matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will give you a better understanding of the requirements of the Integrated Wiring System, and I hope you can learn more through this article.
I. Use the 86 panel with four por
There are many areas worth learning about in the integrated network cabling system. Here we will mainly introduce the problems related to the gigabit network and cat6 cabling, including how to make proper cabling for the gigabit network, I believe that with the continuous development of information technology, people's needs will be higher, and various wiring technologies will exert their expertise.
As we all know, Ethernet technology is closely relat
transmission. We can see whether the signal-to-noise ratio of the transmission cable in our data center can meet the system transmission requirements. Currently, Cat6 is commonly used for data transmission in integrated cabling of data centers. Cat6A is also used for Cat5E, and almost no data center is used for data transmission, so it is not in the scope of this article ). The signal-to-noise ratio can be calculated based on the data specified in th
convert electronic signals to fiber-optic signals. In addition, it makes the development of the annular structure possible, and the annular structure can provide the necessary redundancy to ensure the reliability of the system.
However, in recent years, the TDM (SONET/SDH) line rate has been growing slowly, it is expected to be unable to meet the demand of data traffic growth in a few years, and wavelength division multiplexing (WDM) is the newest new technology, which can increase the capacit
Active Queue Management(AQM) scheme is employed. Given an ambiguity in the choice of the AQM parametersAQM is rarely used in practice. On the other hand, in the basic Drop Tail routers, the buffer sizeIs the only one parameter to tune apart of the router capacity.The first proposed rule of thumb for the choice of the router buffer size is to choose the bufferSize equal to the Bandwidth-delay Product (BDP) of the outgoing link.It is observed that the utilization of a link improves very fast with
IEEE and 10GEA (Gigabit Ethernet Alliance) are the two most important organizations in Gigabit Ethernet standardization.Gigabit Ethernet standards and specifications are many, in the standard, the first 2002 years of IEEE 802.3ae, and then continue to have a new Gigabit Ethernet specification, such as the 2006 IEEE 802.3an Standard (10GBASE-T) on the introduction of twisted-pair copper wire-based Gigabit Ethernet specification , the same IEEE 802.3aq standard introduced the 10gbase-lrm;2007-base
damage has occurred. The cable cannot guarantee the cable performance.
Minimum bending radius
For the minimum bending radius, see the cable diameter. It is usually expressed in multiples of D (Cable diameter. The diameter of cat6 cables is generally greater than that of cat5 cables. Therefore, the actual radius of cat6 cables is generally greater than that used in cat5 cables.
Comparison between cat5e an
crowd's background noise) to be heard. This is ACR.
In fact, the development of application technology also requires measuring other performance parameters. Return Loss, expressed in dB) form, is a reflection of some signals caused by mismatch of characteristic impedance. Ripple loss is an increasingly important parameter when trying to obtain better UTP system performance. High-performance UTP manufacturers will pay special attention to ensure the consistency of the special impedance of the ca
Wiring StandardPractical Application
Let's take a good look at network communication standards. It is not hard to see that many standards were launched to solve certain applications, such as the launch of 10G/40G/G networks, it mainly addresses applications of data centers and network trunk. Therefore, cat6 and cat6 cabling products are also applied to these network requirements. Therefore, do not blindly a
Integrated Network Cabling SystemThere are many things worth learning. Here we will mainly introduce the 1-gigabit network and 6 categories.WiringI believe that with the continuous development of information technology, people will have higher requirements, all kinds of wiring technologies will leverage their expertise.
Do I need six types of cabling for a gigabit network?
At present, there is a lot of debate on the need for cat6 cabling in the networ
Indoor cables, just as in their names, are cables made for indoor applications-that is, they cannot be immersed in liquid water in this environment. No more than outdoor cables, indoor cables do not use water-resistant materials or structures that reduce water penetration.
If the indoor cables are immersed in water, the cables may enter the water. Cable Entry will immediately lead to a negative impact on the electrical transmission characteristics of the cable, including capacitance, attenuation
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Cat6/5e permanent link adapter
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Cat6/5e Channel Adapter
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Cat6/5e channel/Traffic Adapter
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Integrated memory cardUp to 300 test results can be stored
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Only for the summary test)
Multi-media cards and card readers
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. The transmission characteristics of Category 5 cables are the same as that of Category 5 cables. However, according to the standard of Category 5 cabling, all the four pairs of Category 5 cables can achieve full duplex communication.5) cat6 cables: the transmission frequency of these cables is 1 MHz ~ 250 MHz, cat6 cabling system at MHz integrated attenuation crosstalk than PS-ACR) should have a larger ma
Generally, the Integrated Wiring System is updated every seven years. It takes five years to replace the three-category system with the Five-category system. It takes only three years, cat6 systems are mature and increasingly widely used. It is a trend to implement Gigabit Ethernet in cat6 systems, and standards for cat6 systems are being formulated and initially
of the latter. Imagine that if the speed reaches 2000 Mbit/s, you can download the entire Mbit/s hard drive content from your PC within 16 seconds through the network. Therefore, copper cables are not useless in delivering "Urgent parcels" and will not be eliminated due to bandwidth restrictions.
Currently, wks that run at the highest rate through unshielded twisted pair wires are 2 to 4 Gbps ATMs. This kind of application is implemented through cat5e cabling. It adopts a perfect coding technol
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