<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40" xmlns:ns0="urn:schemas-microsoft-com:office:smarttags"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Netperf group,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ll start to say I’m definitely a netperf novice – but I’ve exhausted all resources I can find so far.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m trying to use netperf to send out a traffic stream from one port of a NIC card (10Gb/sec NIC) to the other port of the card (dual port 10Gb/sec NIC).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I want to do this on a single computer – not separate netserver and netperf systems.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I thought I had it with the following:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>#> netserver –L 192.168.0.11,4<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>#> netperf –H 192.168.0.11,4 –L 192.168.0.12<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My dual port 10G NIC has address’s 192.168.0.11 and 12 assigned to it.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>These commands seemed to work – but when I disconnected the optical cable between the ports – it just kept running, so traffic wasn’t going that way..<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m guessing that the traffic might be going through some internal loopback setting? – but don’t know how to turn this feature off.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any thoughts greatly appreciated!! <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>NOTE: The main requirements I have are to do this test with just the single dual port 10G nic card and using just 1 computer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Background info:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>System: Dell server with PCIe interface slots<o:p></o:p></p><p class=MsoNormal>System running OpenSuse 11.3<o:p></o:p></p><p class=MsoNormal>Netperf2.4.5<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>NIC is a Brocade 1020 CNA card with static IP address’s 192.168.0.11 and 192.168.0.12 assigned to the two ports. There is an optical cable connecting the two ports (for test purposes).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance.<o:p></o:p></p><p class=MsoNormal>Werner<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Werner Hoehenrieder</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Staff HW Engineer, Platform Development</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:address><ns0:Street>120 Holger Way</ns0:Street></ns0:address><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Brocade Building 2</span><br><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:City>San Jose</ns0:City>, <ns0:State>CA</ns0:State> <ns0:PostalCode>95134</ns0:PostalCode></span><br><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Phone: (408) 333-6477<br><br></span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>