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<div class="gmail_quote">On Wed, Jul 15, 2009 at 5:52 PM, Cote, Sylvain <span dir="ltr"><<a href="mailto:Sylvain.Cote@verint.com">Sylvain.Cote@verint.com</a>></span> wrote:<br>
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<p><font face="Times New Roman" color="navy" size="3"><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>Hi all</p></div>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>In ethernet driver i need to enable promiscous mode and have to capture the packet that is sent by the same ethernet. </p>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>The board is connected to a packet generator and could send/receive packets whenever i need .</p></div>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>In the board ethernet driver , I made sure that am sending only broadcast packets and promisc mode is enabled but the packets are not captured. If i am sending a packet to the board from packetgenerator it is receiving.</p>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>Could any one please suggest me any clues.</p></div>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>Having the promisc enabled:</p></div>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>Packet sent by packetgenerator is received by board.</p></div>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">> </span></font>Packet sent by board is received by packetgenerator, The same packet should be captured by board as promiscuous is enabled. but not happening.<font color="navy"><span style="COLOR: navy"></span></font></p>
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<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">The Ethernet interface that sent the packet will never receive the packet it sent even if you are in promiscuous mode. To be able to do that you should put your interface in loopback mode. </span></font></p>
<p><font face="Times New Roman" color="navy" size="3"><span style="FONT-SIZE: 12pt; COLOR: navy">In promiscuous mode, you will be able to receive any packets sent by other interfaces (broadcast, multicast and also unicast that is not directed to you interface MAC address). But not</span></font></p>
<p><font face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">from your interface.</span></font></p></div></div></div></blockquote>
<div>Thanks for your inputs Sylvain.</div>
<div>I tried with loopback, it is working. </div>
<div>But during the time the hardware is in lopback mode, it may miss some rx packets coming from outside or packet generator unfortunately and i dont want it to happen.</div>
<div>Please let me know your views and suggestions.</div>
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<div>Thanks</div>
<div>Sudheer</div>
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