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<a name="wp1495826"> </a><h1 class="pTitle">
RSPAN Configuration Guidelines

</h1>
<a name="wp1495827"> </a><p class="pBody">
The following guidelines apply for a SPAN configuration: 

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1495828"> </a><li class="pSmartList1">All switches in the end-to-end path of the RSPAN tunnel must belong to the Cisco MDS 9000 
Family.
</li>
<a name="wp1495829"> </a><li class="pSmartList1">All VSANs with RSPAN traffic must be enabled. If a VSAN containing RSPAN traffic is not 
enabled, it is dropped.
</li>
<a name="wp1495830"> </a><li class="pSmartList1">The following configurations must be performed on <em class="cEmphasis">each</em> switch in the end-to-end path of the Fibre 
Channel tunnel in which RSPAN is to be implemented:
</li>
<div class="pSmartList2"><ul class="pSmartList2">
<a name="wp1495831"> </a><li class="pSmartList2">Trunking must be enabled (enabled by default) and the trunk enabled link must be the lowest cost link in the path.</li>
<a name="wp1495832"> </a><li class="pSmartList2">VSAN interface must be configured.</li>
<a name="wp1495833"> </a><li class="pSmartList2">The Fibre Channel tunnel feature must be enabled (disabled by default).</li>
<a name="wp1495834"> </a><li class="pSmartList2">IP routing must be enabled (disabled by default). </li>
<a name="wp1495835"> </a><p class="pBodyAutonumRel">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> If the IP address is in the same subnet as the VSAN, the VSAN interface does not have to 
be configured for all VSANs on which the traffic is spanned.

</p>
</ul></div>
<a name="wp1495836"> </a><li class="pSmartList1">A single Fibre Channel switch port must be dedicated for the ST port functionality.
</li>
<a name="wp1495837"> </a><li class="pSmartList1">Do not configure the port to be monitored as the ST port.
</li>
<a name="wp1495838"> </a><li class="pSmartList1">The FC tunnel’s IP address must reside in the same subnet as the VSAN interface.
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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