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<a name="wp1077741"> </a><h1 class="pTitle">
Port Swapping Guidelines

</h1>
<a name="wp1077743"> </a><p class="pBody">
Be sure to follow these guidelines when using the FICON port swapping feature:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1077744"> </a><li class="pSmartList1">Port swapping is not supported for logical ports (PortChannels, FCIP links). Neither the 
<em style="font-style: italic; font-weight: normal">old-port-number </em>nor<em style="font-style: italic; font-weight: normal"> </em>the<em style="font-style: italic; font-weight: normal"> new-port-number</em> can be a logical port.
</li>
<a name="wp1077745"> </a><li class="pSmartList1">Port swapping is not supported between physical ports that are part of a PortChannel. Neither the 
<em style="font-style: italic; font-weight: normal">old-port-number </em>nor<em style="font-style: italic; font-weight: normal"> </em>the<em style="font-style: italic; font-weight: normal"> new-port-number</em> can be a physical port that is part of a PortChannel.
</li>
<a name="wp1077746"> </a><li class="pSmartList1">Before performing a port swap, the Cisco NX-OS software performs a compatibility check. If the 
two ports have incompatible configurations, the port swap is rejected with an appropriate reason 
code. For example, if a port with BB_credits as 25 is being swapped with an OSM port for which a 
maximum of 12 BB_credits is allowed (not a configurable parameter), the port swapping operation 
is rejected.
</li>
<a name="wp1077747"> </a><li class="pSmartList1">Before performing a port swap, the Cisco NX-OS software performs a compatibility check to verify 
the extended BB_credits configuration.
</li>
<a name="wp1077749"> </a><li class="pSmartList1">If ports have default values (for some incompatible parameters), then a port swap operation is 
allowed and the ports retain their default values. 
</li>
<a name="wp1077750"> </a><li class="pSmartList1">Port tracking information is not included in port swapping. This information must be configured 
separately (refer to the <em class="cEmphasis">Cisco MDS 9000 Family NX-OS Quality of Service Configuration Guide</em>).
</li>
</ul></div>
<a name="wp1077751"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> The 32-port module guidelines also apply for port swapping configurations (Refer to the <em class="cEmphasis">Cisco MDS 
9000 Family NX-OS Interfaces Configuration Guide</em>).

</p>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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