I personnally use it for QoS definition. It works as expected but i can&#39;t garantee this is the regular use for this attribute.<br><br>What&#39;s special with the class attribute is that if you send It in Access-Accept, It should be added in later accounting packets. This can be very usefull and if you don&#39;t nées this features i suggest you use another attribute.<br><br>Sent from my HTC.<br><br><div id="htc_header" style="">----- Reply message -----<br>De : &quot;weiwei fang&quot; &lt;fangvv@gmail.com&gt;<br>Date : Dim, mai 23, 2010 23:15<br>Objet : What is the Class attribute for?<br>Pour : &lt;freeradius-users@lists.freeradius.org&gt;<br><br></div>Hello, all!<br><br>I noticed that RFC 2865 defined an attribute called &quot;Class&quot;, but I don&#39;t know its meaning and usage. Can I use it as the QoS classfication for the user?<br><br>Thanks!<br>