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    <title>Information About SPAN </title>
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<a name="wp1479551"> </a><h1 class="pTitle">
Information About SPAN

</h1>
<a name="wp1289386"> </a><p class="pBody">
The SPAN feature is specific to switches in the Cisco MDS 9000 Family. It monitors network traffic 
through a Fibre Channel interface. Traffic through any Fibre Channel interface can be replicated to a 
special port called the SPAN destination port (SD port). Any Fibre Channel port in a switch can be 
configured as an SD port. Once an interface is in SD port mode, it cannot be used for normal data traffic. 
You can attach a Fibre Channel Analyzer to the SD port to monitor SPAN traffic. 

</p>
<a name="wp1289387"> </a><p class="pBody">
SD ports do not receive frames, they only transmit a copy of the SPAN source traffic. The SPAN feature 
is nonintrusive and does not affect switching of network traffic for any SPAN source ports . 

</p>
<a name="wp1496151"> </a><p class="pBody">
This section covers the following topics:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1496164"> </a><li class="pSmartList1"><a href="span03.html">SPAN Sources</a>
</li>
<a name="wp1496192"> </a><li class="pSmartList1"><a href="span04.html">IPS Source Ports</a>
</li>
<a name="wp1496221"> </a><li class="pSmartList1"><a href="span05.html">Allowed Source Interface Types</a>
</li>
<a name="wp1496250"> </a><li class="pSmartList1"><a href="span06.html">VSAN as a Source</a>
</li>
<a name="wp1496279"> </a><li class="pSmartList1"><a href="span07.html">SPAN Sessions</a>
</li>
<a name="wp1496307"> </a><li class="pSmartList1"><a href="span08.html">Specifying Filters</a>
</li>
<a name="wp1496311"> </a><li class="pSmartList1"><a href="span09.html">SD Port Characteristics</a>
</li>
<a name="wp1496333"> </a><li class="pSmartList1"><a href="span10.html">Monitoring Traffic Using Fibre Channel Analyzers</a>
</li>
<a name="wp1496552"> </a><li class="pSmartList1"><a href="span11.html">Monitoring Without SPAN</a>
</li>
<a name="wp1496565"> </a><li class="pSmartList1"><a href="span12.html">Monitoring with SPAN</a>
</li>
<a name="wp1496578"> </a><li class="pSmartList1"><a href="span13.html">Single SD Port to Monitor Traffic</a>
</li>
<a name="wp1534596"> </a><li class="pSmartList1"><a href="span14.html">SD Port Configuration</a>
</li>
<a name="wp1560723"> </a><li class="pSmartList1"><a href="span15.html">Mapping the FC Tunnel</a>
</li>
<a name="wp1560731"> </a><li class="pSmartList1"><a href="span16.html">Remote SPAN</a>
</li>
<a name="wp1496603"> </a><li class="pSmartList1"><a href="span17.html">Advantages of Using RSPAN</a>
</li>
<a name="wp1496616"> </a><li class="pSmartList1"><a href="span18.html">FC and RSPAN Tunnels</a>
</li>
<a name="wp1536515"> </a><li class="pSmartList1"><a href="span19.html">ST Port Configuration</a>
</li>
<a name="wp1496629"> </a><li class="pSmartList1"><a href="span20.html">ST Port Characteristics</a>
</li>
<a name="wp1500506"> </a><li class="pSmartList1"><a href="span21.html">Creating Explicit Paths</a>
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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