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        <a class="toc_link" href="page3.xml">Prerequisites</a>
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        <a class="toc_link" href="">Foundations</a>
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        <a class="toc_link" href="">Shortest-Path Algorithms</a>
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        <a class="toc_link" href="">Routing</a>
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        <a class="toc_link" href="page21.xml">Designing A Routing Protocol</a>
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        <a class="toc_link" href="">Telephone Networks</a>
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        <a class="toc_link" href="page25.xml">Routing Strategies</a>
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        <a class="toc_link" href="page30.xml">Distance-Vector Routing</a>
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        <a class="toc_link" href="page33.xml">Link-State Routing</a>
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        <a class="toc_link" href="page37.xml">What's Next?</a>
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    <div id="content"><h1>Introduction</h1>
			<p>
			This module presents a subset of the mathematical topic known as
			<i>graph theory</i>.  You then will be shown how you can put a
			knowledge of this area of mathematics to use in a concrete
			application: <b>routing in computer and telephone
			networks</b>.
			</p>
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				<b><i>The Network As A Graph</i></b>
				
					<div class="figure" align="center"><a name=""/><img src="../graphics/starter.gif"/><br/><b><i>Figure 1</i></b><br/><br/></div>
					<p>
					How do we ensure that all nodes in a network will be able to
					communicate quickly and reliably?
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			<h2>Getting Started</h2>
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