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    <title>SPAN Sources </title>
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<a name="wp1496113"> </a><h1 class="pTitle">
SPAN Sources

</h1>
<a name="wp1496114"> </a><p class="pBody">
SPAN sources refer to the interfaces from which traffic can be monitored. You can also specify VSAN 
as a SPAN source, in which case, all supported interfaces in the specified VSAN are included as SPAN 
sources. When a VSAN as a source is specified, then all physical ports and PortChannels in that VSAN 
are included as SPAN sources. You can choose the SPAN traffic in the ingress direction, the egress 
direction, or both directions for any source interface: 

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1467329"> </a><li class="pSmartList1">Ingress source (Rx)&#8212;Traffic entering the switch fabric through this source interface is <em class="cEmphasis">spanned</em> or 
copied to the SD port . 
</li>
<a name="wp1467341"> </a><li class="pSmartList1">Egress source (Tx)&#8212;Traffic exiting the switch fabric through this source interface is spanned or 
copied to the SD port . 
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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