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   8. BACKBONE NETWORKS - Business Data Communications and Networking [Book]
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Explore now."autocomplete=off id=search name=query required type=search><input class=search-submit type=submit value=Search></form></div></div></header><div class=sbo-menu-top><section class=sbo-toc-container><a class=sbo-toc-thumb href=https://learning.oreilly.com/library/view/business-data-communications/9780470055755/> <span class="sbo-title ss-list"> <h1 class=t-title>Business Data Communications and Networking by</h1> </span> </a></section></div><section id=trial-overlay><div class=trial-overlay-content><p>Get <em> Business Data Communications and Networking </em> now with O’Reilly <span class=nowrap> online learning. </span><p>O’Reilly members experience live online training, plus books, videos, and digital content from <span class=nowrap> 200+ publishers. </span><div class=controls><a data-ga-label="Bottom CTA"class=button-primary href=https://learning.oreilly.com/p/register/> Start your free trial </a></div><a aria-label="modal dismiss"class=modal-dismiss> </a></div></section><main id=maincontent role=main><div class=document role=document><section id=sbo-reader><div class="sbo-reader-content sbo-sample-reader"><div class=sbo-rt-content id=sbo-rt-content><div id=test-content-id><div class=chapter><div class=titlepage><div><div><h1 class=title>Chapter 8. BACKBONE NETWORKS</h1></div></div></div><div class=informalfigure><div><img alt="BACKBONE NETWORKS"height=468 src=/library/view/business-data-communications/9780470055755/figs/U0801.png width=549></div></div><p><span class=strong> <strong> THIS CHAPTER </strong> </span> examines backbone networks (BNs) that are used to link LANs together and to link BNs to WANs. We begin with the various types of devices used in BNs and discuss several backbone architectures. We then turn to two technologies designed primarily for use in the BN (ATM and gigabit Ethernet). The chapter ends with a discussion of how to improve BN performance and of the future of BNs.<p><span class=strong> <strong> OBJECTIVES </strong> </span> ▾<div class=itemizedlist><ul class=itemizedlist><li class=listitem><p>Understand the internetworking devices used in BNs</p><li class=listitem><p>Understand several common backbone architectures</p><li class=listitem><p>Be familiar with gigabit Ethernet</p><li class=listitem><p>Understand the best practice recommendations for backbone design</p><li class=listitem><p>Be aware of ways to improve BN performance</p></ul></div><p><span class=strong> <strong> CHAPTER OUTLINE </strong> </span> ▾<p>INTRODUCTION<p>BACKBONE NETWORK COMPONENTS<div class=itemizedlist><ul class=itemizedlist><li class=listitem><p>Switches</p><li class=listitem><p>Routers</p><li class=listitem><p>Gateways</p><li class=listitem><p>A Caution</p></ul></div><p>BACKBONE NETWORK ARCHITECTURES<div class=itemizedlist><ul class=itemizedlist><li class=listitem><p>Backbone Architecture Layers</p><li class=listitem><p>Switched Backbones</p><li class=listitem><p>Routed Backbones</p><li class=listitem><p>Virtual LANs</p></ul></div><p>THE BEST PRACTICE BACKBONE DESIGN<p>IMPROVING BACKBONE PERFORMANCE<div class=itemizedlist><ul class=itemizedlist><li class=listitem><p>Improving Computer and Device Performance</p><li class=listitem><p>Improving Circuit Capacity</p><li class=listitem><p>Reducing Network Demand</p></ul></div><p>IMPLICATIONS FOR MANAGEMENT<p>SUMMARY<div class=sect1><div class=titlepage><div><div><h1 class=title>INTRODUCTION</h1></div></div></div><p>Most business organizations realize that information must be stored, retrieved, analyzed, acted on, and shared with others at a moment's notice. Without an enterprisewide network or an Internet connection, moving information from one department LAN to another or to customers is difficult.<p>Interconnecting the organization's diverse networks ...</div></div></div></div><section class="t-bottom-cta bottom-cta bottom-cta-book"><p>Get <em> Business Data Communications and Networking </em> now with O’Reilly <span class=nowrap> online learning. </span><p>O’Reilly members experience live online training, plus books, videos, and digital content from <span class=nowrap> 200+ publishers. </span><div class=controls><a data-ga-label="Bottom CTA"class=button-primary href=https://learning.oreilly.com/p/register/> Start your free trial </a></div></section></div></section></div></main><footer class=footer id=footer><div class=content><div aria-label="company info"class=footer-main><div class=footer-mainLeft><div class=footer-mainLeftOne><div class=footer-approach><h2 class=footer-header><a href=https://www.oreilly.com/about/> About O’Reilly 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