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    <title>SPAN Sessions </title>
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<a name="wp1289499"> </a><h1 class="pTitle">
SPAN Sessions

</h1>
<a name="wp1289504"> </a><p class="pBody">
Each SPAN session represents an association of one destination with a set of source(s) along with 
various other parameters that you specify to monitor the network traffic. One destination can be used by 
one or more SPAN sessions. You can configure up to 16 SPAN sessions in a switch. Each session can 
have several source ports and one destination port.

</p>
<a name="wp1289505"> </a><p class="pBody">
To activate any SPAN session, at least one source and the SD port must be up and functioning. Otherwise, 
traffic is not directed to the SD port.

</p>
<a name="wp1289506"> </a><p class="pBodyAutonumRel">
<strong>Tip	&nbsp;&nbsp;&nbsp;</strong> A source can be shared by two sessions, however, each session must be in a different direction&#8212;one 
ingress and one egress.

</p>
<a name="wp1289507"> </a><p class="pBody">
You can temporarily deactivate (suspend) any SPAN session. The traffic monitoring is stopped during 
this time.

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

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