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    <title>Authentication </title>
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<a name="wp1072849"> </a><h1 class="pTitle">
Authentication

</h1>
<a name="wp1072850"> </a><p class="pBody">
Authentication is the process of verifying the identity of the person  or device accessing the switch. This 
identity verification is based on the user ID and password combination provided by the entity trying to 
access the switch. Cisco MDS 9000 Family switches allow you to perform local authentication (using 
the local lookup database) or remote authentication (using one or more RADIUS or TACACS+ servers). 

</p>
<a name="wp1072854"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> When you log in to a Cisco MDS switch successfully using DCNM-SAN or Device Manager through 
Telnet or SSH and if that switch is configured for AAA server-based authentication, a temporary SNMP 
user entry is automatically created with an expiry time of one day. The switch authenticates the SNMPv3 
protocol data units (PDUs) with your Telnet or SSH login name as the SNMPv3 user. The management 
station can temporarily use the Telnet or SSH login name as the SNMPv3 <b class="cBold">auth</b> and<b class="cBold"> priv</b> passphrase. This 
temporary SNMP login is only allowed if you have one or more active MDS shell  sessions. If you do 
not have an active session at any given time, your login is deleted and you will not be allowed to perform  
SNMPv3 operations.

</p>
<a name="wp1072855"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> DCNM-SAN does not support AAA passwords with trailing white space, for example “passwordA.”

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

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