Lan switching and wireless pdf

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lan switching and wireless pdf

LAN Switching and Wireless, CCNA Exploration Companion Guide

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LAN Design-LAN Switching and Wireless CCNA Exploration Chapter 1

A network switch also called switching hub , bridging hub , officially MAC bridge [1] is networking hardware that connects devices on a computer network by using packet switching to receive, and forward data to the destination device. A network switch is a multiport network bridge that uses media access control addresses to forward data at the data link layer layer 2 of the OSI model. Some switches can also forward data at the network layer layer 3 by additionally incorporating routing functionality.

Cisco® LAN Switching

The sections in this chapter describe common LAN switch features and solutions to some of the most common LAN switching problems. These items are covered:. Refer to Cisco Technical Tips Conventions for more information on document conventions. If you are new to LAN switching, these sections take you through some of the main concepts related to switches. One of the prerequisites to troubleshooting any device is to know the rules under which it operates. Switches have become much more complex over the last few years because they have gained in popularity and sophistication.

Welcome to the world of LANS, in the previous couple of chapters, we learnt about routers and how they are used in the networking environments. The concepts we will learn will also tie in with routing concepts. With technology, this has been made possible, the use of new methods of communicating such as the use of voice, video, data which is transmitted over networks is crucial. As such, we need to design LANs with these needs in mind. In this chapter, we will discuss some of the considerations to make while we design the LAN. We will look at the hierarchical LAN model and its benefits, some design considerations as well as the benefits of well-designed LANs. This chapter is meant to introduce you to the world of LANs.

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