Constructing Gigabit Ethernet 1000BASE-T with five kinds of twisted-pair wires

How can network managers implement bandwidth-intensive applications on local area networks (LANs) when budgets are tight and must maintain existing network systems? The latest Ethernet technology, 1000BASE-T (Gigabit Ethernet on the five-type twisted pair) can help network administrators quickly improve the performance of your network in a simple and inexpensive way.

1000BASE-T is an Ethernet technology that provides 1000Mbps of transmission bandwidth on five types of lines. And the five-class line is the most widely used physical media in LAN system. The IEEE Standardization Committee formally approved the 1000BASE-T as an Ethernet standard in June 1999. (Computer science)

This article is dedicated to those who need to understand the principles of 1000BASE-T Technology network management personnel. It will explain how the 1000BASE-T, which is designed by the IEEE 802.3ab Task Force, runs on five types of lines, and also explains how to implement 1000BASE-T on existing five-class line facilities and how to use enhanced five-class lines on new networks (Cat 5e) Realize 1000base-t.

Why Choose 1000BASE-T: Gigabit Ethernet implemented on the fifth type twisted pair?

1000BASE-T (Gigabit Ethernet implemented on the fifth type twisted pair) is one of the best choices for network administrators for several reasons. It is mainly to meet the existing network in the rapid increase in bandwidth demand. In these networks, emerging applications continue to emerge, while the network edge switches are increasing. Gigabit Ethernet protects the company's investments in Ethernet and Fast Ethernet facilities, providing a simple and inexpensive performance boost while continuing to use a large number of existing horizontal cable transmission media.

The rapid growth of bandwidth requirements in both Ethernet and Fast Ethernet networks has emerged with a number of emerging applications that have a large demand for bandwidth.

These applications include:

Internet and intranet applications, these applications may require data transfer from any location to any location. In these applications, servers are distributed across the enterprise network and users can access the Web site from within or outside the corporate network. These applications make data transfer patterns and bandwidth requirements increasingly unpredictable.

Database and backup applications that need to handle gigabytes or trillions of data distributed across thousands of servers and storage systems.

Applications such as desktop video conferencing or switched whiteboards that have a high demand for bandwidth and are sensitive to latency.

Publishing, multimedia images, and scientific model applications that generate many multimedia and image files that grow at a rapid rate, from megabytes to gigabytes to trillions of megabytes.

In addition to desktop connection choices, the increased bandwidth pressure is further increased by the addition of switches in the network. Switches at the edge of the network can greatly increase the volume of traffic that needs to converge at the level of a workgroup, server, or backbone network.

A large investment in Ethernet/Fast Ethernet facilities is an unparalleled technology that dominates LAN technology. By the end of 1997, over 500 of the existing network connections were Ethernet enabled, meaning that more than 1.18 billion computers, workstations, and servers were interconnected by Ethernet over 1.

The deployment of Ethernet/Fast Ethernet includes investment in various aspects, including network cards, hubs, switches, and networking management functions, personnel training, and cable facilities. In fact, cable facilities are a long-term investment that typically lasts at least two years and can last up to 10 years. (on average, nearly half of all facilities are used for more than five years 2).

Achieve simple, low-cost performance improvements on existing fifth-type twisted-pair wires 1000BASE-T can provide a simple, inexpensive solution for porting Ethernet/fast ether networks to high-speed networks, with the following features:

1000base-t can elevate the performance of Ethernet 10/100 Mbps to 1000 Mbps. Flexible 10/100 and 10/100/1000 connections can provide a smooth transition for existing Mbps-based networks.

1000BASE-T is the best high-speed network technology available at the price of performance. 1000BASE-T can continue to support the existing proven Fast Ethernet and v.90/56k modem technology, and has the same cost curve as Ethernet/Fast Ethernet technology. In fact, we expect the 1000BASE-T technology to have a higher performance-price ratio than the 1000BASE-SX (fiber gigabit Network), and 1000BASE-SX has the lowest data transfer cost per second (less than $1.5 per Mbps) in all LAN technologies.

1000base-t can retain investment in equipment and facilities for Ethernet, including existing investments in 5-type line facilities. The updating of cables in walls, ceilings and overhead floors is time-consuming and requires significant investment, while 1000BASE-T does not require such work. It is important to retain the 5-type twisted-pair facilities for the following two reasons:

The five-class line is today's main horizontal cable transmission medium, which provides connectivity for desktop systems and component convergence services (Figure 1). Optical fiber is the main medium of interconnection between different buildings.

The five-class line is one of the most important choices for constructing the basic/backbone network cable, which can be used to connect different floor wiring boxes.

1000BASE-T Technical principle

Specification for Gigabit Ethernet Media

Gigabit Ethernet can leverage existing cable facilities to achieve a good performance-price ratio. It can be used on the floor, in the building and on the network in the park, because it can support a variety of connecting media and a wide range of connection distance. In particular, Gigabit Ethernet can be run on the following four media:

Single-mode fiber, maximum connection distance up to 5 km

Multimode fiber, maximum connection distance of at least 550 meters

Balanced, shielded copper cable, maximum connection distance of at least 25 meters

Five types of lines, maximum connection distance of at least 100 meters