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    <title>NPV Mode </title>
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<a name="wp1072663"> </a><h1 class="pTitle">
NPV Mode

</h1>
<a name="wp1072664"> </a><p class="pBody">
A switch is in NPV mode after a user has enabled NPV and the switch has successfully rebooted. NPV 
mode applies to an entire switch. All end devices connected to a switch that is in NPV mode must log in 
as an N port to use this feature (loop-attached devices are not supported). All links from the edge 
switches (in NPV mode) to the NPV core switches are established as NP ports (not E ports), which are 
used for typical interswitch links. NPIV is used by the switches in NPV mode to log in to multiple end 
devices that share a link to the NPV core switch.

</p>
<a name="wp1072665"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> In-order data delivery is not required in NPV mode because the exchange between two end devices 
always takes the same uplink to the core from the NPV device. For traffic beyond the NPV device, core 
switches will enforce in-order delivery if needed and/or configured.

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

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