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    <title>Enabling Time Stamp Control </title>
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<a name="wp1075966"> </a><h1 class="pTitle">
Enabling Time Stamp Control

</h1>
<a name="wp1075967"> </a><p class="pBody">
You can instruct the switch to discard packets that are outside the specified time. When enabled, this 
feature specifies the time range within which packets can be accepted. If the packet arrived within the 
range specified by this option, the packet is accepted. Otherwise, it is dropped. 

</p>
<a name="wp1075968"> </a><p class="pBody">
By default, time stamp control is disabled in all switches in the Cisco MDS 9000 Family. If a packet 
arrives within a 2000 millisecond interval (+ or –2000 msec) from the network time, that packet is 
accepted.

</p>
<a name="wp1075969"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> The default value for packet acceptance is 2000 microseconds.If the <b class="cBold">time-stamp</b> option is enabled, be 
sure to configure NTP on both switches (see the <span style="font-style: italic">Cisco NX-OS Fundamentals Configuration Guide </span>for 
more information).

</p>
<a name="wp1075971"> </a><p class="pBodyAutonumRel">
<strong>Tip	&nbsp;&nbsp;&nbsp;</strong> Do not enable time stamp control on an FCIP interface that has tape acceleration or write acceleration 
configured.

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

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