You will want to define a class matching the vendor id similar to this...<br><br><pre class="bbcodeblock" dir="ltr" style="margin:0px;padding:3px;border:1px inset;width:98%;height:178px;text-align:left;overflow:auto">class "Intel"
{
match if substring (option vendor-class-identifier, 0, 5) = "intel";
}</pre><br>The in your subnet declarations use the allow deny options like this...<br><br>subnet 80.0.0.0 netmask 255.0.0.0 {<br> allow Intel;<br>}<br><br><div class="gmail_quote">On Mon, Dec 26, 2011 at 7:33 AM, <span dir="ltr"><<a href="mailto:ameen.shajahan@wipro.com">ameen.shajahan@wipro.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-IN">
<div>
<p class="MsoNormal"><span lang="EN-US">Hi all,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Let us assume that there would be 2 servers running , so 2 clients should connect to the server.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">I am using ISC dhcp-4.2.3 code.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><u></u><span style="margin-left:203px;margin-top:5px;width:70px;min-height:12px"><img src="cid:image003.png@01CCC407.8248B540" height="12" width="70"></span><u></u><span lang="EN-US">Linux
server --------------->switch PC1<u></u><u></u></span></p>
<p class="MsoNormal"><u></u><span style="margin-left:32px;margin-top:1px;width:12px;min-height:22px"><img src="cid:image004.png@01CCC407.8248B540" height="22" width="12"></span><u></u><u></u><span style="margin-left:189px;margin-top:1px;width:3px;min-height:40px"><img src="cid:image005.png@01CCC407.8248B540" height="40" width="3"></span><u></u><span lang="EN-US">
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">running two process<u></u><u></u></span></p>
<p class="MsoNormal"><u></u><span style="margin-left:190px;margin-top:3px;width:83px;min-height:12px"><img src="cid:image006.png@01CCC407.8248B540" height="12" width="83"></span><u></u><span lang="EN-US">i:e
dhcpd PC2<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">PC1 as client 1<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">PC2 as client 2<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">in switch , two ports are used to connect PC1 and PC2<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">these two ports I have configured as vlans 1 and 2. (access port)<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Vlan 1 for PC1 connection.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Vlan 2 for PC2 connection<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Initially we would have configured in server side about which subnet it should listen.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">For example :<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Ifconfig etho add 10.1.1.1<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Ifconfig eth1 add 20.1.1.1<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">But I got one information from dhcp users , there are methods available and I mentioned below.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p><b><u><span style="color:red">1) Declare host statements for clients required in one subnet, then use allow/deny known-hosts to allow them in one and deny them in the other.<u></u><u></u></span></u></b></p>
<p><b><u><span style="color:red"><u></u><span style="text-decoration:none"> </span><u></u></span></u></b></p>
<p><b><u><span style="color:red">2) Use classes and subclasses to assign clients in much the same way (typically by list of MAC addresses.<u></u><u></u></span></u></b></p>
<p><b><u><span style="color:red"><u></u><span style="text-decoration:none"> </span><u></u></span></u></b></p>
<p><b><u><span style="color:red">3) Use classes matches on some arbitrary expression (could be vendor ID etc) to separate clients.<u></u><u></u></span></u></b></p>
<p><b><u><span style="color:red"><u></u><span style="text-decoration:none"> </span><u></u></span></u></b></p>
<p class="MsoNormal"><b><u><span style="color:red" lang="EN-US"><u></u><span style="text-decoration:none"> </span><u></u></span></u></b></p>
<p class="MsoNormal"><b><u><span style="color:red" lang="EN-US"><u></u><span style="text-decoration:none"> </span><u></u></span></u></b></p>
<p class="MsoNormal"><b><span style="color:#7030a0" lang="EN-US"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><b><span style="color:#7030a0" lang="EN-US">But I need information about method 3 due to my requirements. How to do that type of client separation. Please let me know.<u></u><u></u></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> <u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">For example in dhcpd.conf contains 10subnets<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> #vi dhcpd.conf<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p> subnet 10.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p> subnet 20.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p><span lang="EN-US"> </span>subnet 30.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p> subnet 40.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p> subnet 50.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p> subnet 60.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> } <u></u><u></u></p>
<p> subnet 70.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p> subnet 80.0.0.0 netmask 255.0.0.0 {<u></u><u></u></p>
<p> ...<u></u><u></u></p>
<p> }<u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Ameen S<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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