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    <title>Loopback Test Configuration Frequency </title>
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<a name="wp1334290"> </a><h1 class="pTitle">
Loopback Test Configuration Frequency

</h1>
<a name="wp1334291"> </a><p class="pBody">
Loopback tests are designed to identify hardware errors in the data path in the module(s) and the control 
path in the supervisors. One loopback frame is sent to each module at a preconfigured frequency&#8212;it 
passes through each configured interface and returns to the supervisor module.

</p>
<a name="wp1334287"> </a><p class="pBody">
The loopback tests can be run at frequencies ranging from 5 seconds (default) to 255 seconds. If you do 
not configure the loopback frequency value, the default frequency of 5 seconds is used for all modules 
in the switch. Loopback test frequencies can be altered for each module. 

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

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