Research on cat6 gigabit network cabling

As we all know, Ethernet technology is closely related to Cabling Technology. How can we develop the Gigabit Ethernet technology to support the next generation of cables, especially the six types of cables in the protocol?
■ Do I need six types of cabling for a gigabit network?
Currently, there is a lot of debate over whether cat6 cabling is required in the cabling industry. Remember that when three types of cabling became popular in 1992 and five types of cabling were just proposed, the cheap 10 Mbps was for Ethernet (10 Base-T) and 25 Mbps atm lan based on three types of wiring. When the bit rate of Ethernet is increased to 100 Mbps and the atm lan is increased to 155.5 Mbps, electronic devices have to increase their complexity and cost to support these LAN technologies based on three types of cabling. 100Base-T4, 100Base-T2, and 155.5 Mbps CAP64 atm lan require the use of complex DSP technology to overcome the limitations of three types of wiring. As cat5e cabling is adopted by many end users, the cheap 100 Mbps (100Base-TX) Ethernet and 155.5 Mbps nrz atm lan have also been developed and improved performance has been achieved on the basis of cat5e cabling.
The actual situation indicates that the total cost for each user to connect to 100BASE-T4 using three types of cabling, for example, from the router to the NIC, including the cable, is USD 246, the cost of 198 BASE-TX is only USD 24% on the basis of the five-category cabling. In contrast, the average connection cost per user is reduced.
There is no doubt that the same development will happen again in the 1000Base-T LAN technology. Because 1000Base-TX is designed to work in two-to-one and two-to-receive ways, therefore, Echo Cancellation in full duplex mode is not required. To reduce the time to market, the MLT-3 encoding method used by 100Base-TX will be selected, and the bandwidth efficiency of the MLT-3 is 4 bits per Hz, so the bandwidth is 125 MHz. This well limits the cat6 cabling to the NEXT and PSNEXT ranges, so crosstalk cancellation is unnecessary. From the perspective of current semiconductor technology, the absence of ECHO and Crosstalk cancellation devices will reduce at least 50% of the overall complexity of the 1000Base-TX design (compared with the current 1000Base-T design ).
By extension, if the data rate increases from 500 Mbps to 600 Mbps per pair, this design can be used in 1.2 Gbps systems. Therefore, cat6 cabling not only reduces the cost of electronic devices that support Gigabit Ethernet, but also provides basic facilities for LAN technologies that may exceed 1 Gbps in the future.
The investment in cabling infrastructure will be considered a long-term investment, and cabling facilities should also be considered as an asset. According to the International cabling standard ISO 11801, the expected life of a cabling system is at least 10 years. During this period, PC technology will be greatly improved. For the moment, although the desktop system does not need to use 1 Gbps, it is mainly caused by the limitation of the current PC internal bus structure, because the bus determines the data exchange rate between the processor, memory, and other peripheral devices such as NICs. The famous Moore's law predicts that the number of transistors on a chip doubles every 18 months. This is often used to describe the growth rate of PC Processor performance. That is to say, the performance of PCs is doubled every 18 months. So far, it is very likely that 1000Base-TX technology will be applied to the desktop system during the lifecycle of the cabling system.
■ Wiring a gigabit network
The complete integrated wiring system design is the foundation to ensure the success of the system. On the basis of fully understanding the requirements of end users for users' computer networks and business applications, plan the overall framework of the integrated wiring system to design a comprehensive wiring system diagram that reflects the user's actual needs. In the architectural design, the direction and space of the pipe slot of the Integrated Wiring System, the location of the Weak Current well and the weak current room must be taken into account. The design of the weak current system should leave sufficient positions and space for the computer master room and telephone switch room, the number and distribution of information points of each business department should be discussed and determined with the end user as soon as possible.
In addition, the Integrated Wiring System design should be based on the computer network transmission rate, bandwidth and application software requirements, according to the international and European Integrated Wiring System Standards for Integrated Wiring System product cables, connectors) the levels and specifications are stipulated. In addition, the user's requirements on the security and confidentiality of the integrated wiring system should also be taken into account, and whether flame retardant, non-toxic and shielded products should be used. Currently, most of the Integrated Wiring System projects use products of well-known European and American cabling brands. The selection of Integrated Wiring System products should mainly consider whether the adopted cabling products meet international and European Integrated Wiring System Standards and meet the requirements of computer networks and business applications for integrated wiring systems. Users and designers can inspect and inspect products and suppliers as needed.
The implementation of the Integrated Wiring System is the key to implementing the system design requirements. At the same time, during the implementation of the user's construction project and the Weak Current System, the Integrated Wiring System Construction approach was the earliest and the last to end, coordination and cooperation with construction, strong electricity and other weak current systems are the most. Therefore, the construction team of the Integrated Wiring System must have the corresponding construction qualifications, and the construction personnel should have good quality. At the same time, project management personnel must plan, supervise and guide the construction of the Integrated Wiring System to ensure that the integrated wiring system is completed on time and in accordance with the design requirements with high quality.
In project management, pay attention to the following situations that are frequently encountered in the following projects: First, check whether the Integrated Wiring System Design Drawings, building installation drawings and decoration drawings are consistent, if the design drawings cannot be updated to the system in a timely manner, coordination problems of the system will occur, resulting in engineering rework, increasing costs and delaying the construction period. Secondly, whether the design change affects the project progress and cost budget is inevitable in any project. However, you must be careful when proposing the change and follow the regular processing procedures. At the same time, the progress coordination of various systems, on-site coordination and product arrival, storage and on-site system protection issues cannot be ignored.