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<td width="100%" bgcolor="#336666"><b><font face="Arial" size="2" color="#FFFFFF">Overview</font></b></td>
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<font face="Arial" size="2">Frame Relay was originally developed
as an extension of Integrated Services Digital Network (ISDN). It
was designed to enable the circuit-switched technology
to be transported on a packet-switched network. The technology has
become a stand-alone and cost-effective means of creating a WAN.</font><p><font face="Arial" size="2">Frame
Relay switches create virtual circuits to connect remote LANs to a
WAN. The Frame Relay network exists between a LAN border device,
usually a router, and the carrier switch. The technology used by the carrier
to transport the data between the switches is not important to Frame
Relay.</font></p>
<p><font face="Arial" size="2">The sophistication of the
technology requires a thorough understanding of the terms used to
describe how Frame Relay works. Without a firm understanding of
Frame Relay, it is difficult to troubleshoot its performance.</font></p>
<p><font face="Arial" size="2">Frame Relay has become one of the
most extensively used WAN protocols. One reason for its popularity is
that it is inexpensive compared to leased lines. Another reason Frame
Relay is popular is that configuration of user equipment in a
Frame Relay network is very simple. </font></p>
<p><font face="Arial" size="2">This module explains how to
configure Frame Relay on a Cisco router. Frame Relay connections
are created by configuring routers or other devices to communicate
with a Frame Relay switch. The Frame Relay switch is usually
configured by the service provider. This helps keep end-user
configuration tasks to a minimum.</font></p>
<p><font face="Arial" size="2">Students completing this module should be able to:</font></p>
<ul>
<li><font face="Arial" size="2">Identify the components of a
Frame Relay network</font></li>
<li><font face="Arial" size="2">Explain the scope and purpose of
Frame Relay</font></li>
<li><font face="Arial" size="2">Discuss the technology of Frame
Relay</font></li>
<li><font face="Arial" size="2">Compare point-to-point and
point-to-multipoint topologies</font></li>
<li><font face="Arial" size="2">Examine the topology of a Frame
Relay network</font></li>
<li><font face="Arial" size="2">Configure a Frame Relay
Permanent Virtual Circuit (PVC)</font></li>
<li><font face="Arial" size="2">Create a Frame Relay Map on a
remote network</font></li>
<li><font face="Arial" size="2">Explain the issues of a
non-broadcast multi-access network</font></li>
<li><font face="Arial" size="2">Describe the need for
subinterfaces and how to configure them</font></li>
<li><font face="Arial" size="2">Verify and troubleshoot a Frame
Relay connection</font></li>
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<p><font face="Arial" size="2"> </font>
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