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    <title>Tracking the Interface Priority </title>
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<a name="wp1075630"> </a><h1 class="pTitle">
Tracking the Interface Priority

</h1>
<a name="wp1075631"> </a><p class="pBody">
Interface state tracking changes the priority of the virtual router based on the state of another interface 
in the switch. When the tracked interface is down, the priority reverts to the priority value for the virtual 
router (see the <a href="ipsvc21.html">&quot;Setting Virtual Router Authentication&quot; topic</a>). When the tracked interface is up, the 
priority of the virtual router is restored to the interface state tracking value. You can track the state of 
either a specified VSAN interface or the management interface (mgmt 0). The interface state tracking 
feature is disabled by default.

</p>
<a name="wp1075635"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> For interface state tracking to function, you must enable preemption on the interface. 

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

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