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    <title>Configuring Beacon Mode </title>
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<a name="wp1075503"> </a><h1 class="pTitle">
Configuring Beacon Mode

</h1>
<a name="wp1075504"> </a><p class="pBody">
By default, the beacon mode is disabled on all switches. The beacon mode is indicated by a flashing 
green light that helps you identify the physical location of the specified interface. Configuring the 
beacon mode has no effect on the operation of the interface. 

</p>
<a name="wp1097693"> </a><h2 class="pHeading2">
Detailed Steps
</h2>
<a name="wp1192827"> </a><p class="pBody">
To enable beacon mode for a specified interface or range of interfaces using DCNM-SAN, follow these 
steps:

</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1192828"> </a><li class="pSmartList1">Expand <span style="font-weight: bold">Switches&#160;&gt;&#160;Ethernet Interfaces&#160;&gt;&#160;Physical&#160;&gt;&#160;IPS </span>(the Gigabit Ethernet Interfaces).
</li>
<a name="wp1192829"> </a><p class="pListBodyLevel1">
You see the interface configuration in the Information pane.

</p>
<a name="wp1192830"> </a><li class="pSmartList1">Click the Beacon Mode and enable this option for the selected switch.
</li>
<a name="wp1192831"> </a><li class="pSmartList1">Click <b class="cBold">Apply Changes</b>.
</li>
</ol></div>
<a name="wp1097717"> </a><h2 class="pHeading2">
Troubleshooting Tips
</h2>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1075545"> </a><li class="pSmartList1">The flashing green light turns on automatically when an external loopback is detected that causes 
the interfaces to be isolated. The flashing green light overrides the beacon mode configuration. The 
state of the LED is restored to reflect the beacon mode configuration after the external loopback is 
removed.
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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