<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">Couple of points to debug,<br><br>1. Do you see any pause frames getting generated by Router device and not honoured by Spirent test equipment?<br><br>2. Checkout the MPC8248' load if you have console connected to it, using #top command.<br><br>Parav<br><br>--- On <b>Wed, 6/17/09, Mehul Chadha <i><mehulc87@gmail.com></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Mehul Chadha <mehulc87@gmail.com><br>Subject: ethernet packet drop<br>To: linuxppc-dev@lists.ozlabs.org<br>Date: Wednesday, June 17, 2009, 8:23 PM<br><br><div id="yiv1056948534">Hello everyone,<br><br> I am working on a project for router development.<br><br>The basic specifications
of the router are as follows:<br><style>
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<p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><span style="font-family: Symbol; color: black;"><span style="">·<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><span style="color: black;">Supports MPC8248 - 32-bit PowerQUICC II Communication Processor running
at 400 MHz (Max) core frequency, 200 MHz (Max) CPM, and 100MHz (Max) external
bus frequency.</span></p>
<p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><span style="font-family: Symbol;"><span style="">·<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span>64-bit wide 256-MByte synchronous DRAM (soldered
on-board), <span style=""> </span>consisting of 4 no. devices
of 8M x 16 x 4, residing on 60X bus (PBI mode), controlled by SDRAM machine.</p>
<p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><span style="font-family: Symbol;"><span style="">·<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><span style="">256 MB
NAND Flash, organized as 256M x 8, buffered from 60X bus, controlled by UPM
machine.</span></p>
<p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><span style="font-family: Symbol;"><span style="">·<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
</span></span></span><span style="">Upto 8MB
NOR Flash, Boot sector (bottom) type, organized as 8M x 8, buffered from 60X
bus, controlled by GPCM machine. <br></span></p><p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><style>
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</p><p class="MsoNormal"><span style="font-family: Symbol;"><span style="">·<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"> </span></span></span>Linux Kernel version: linux-2.6.16.40</p>
<p class="MsoNormal"><br></p><p class="MsoNormal"></p><p class="MsoNormal">While testing my router with the spirent test equipment, the 2 ethernet ports of the router are connected to the testing equipment. I send data from the testing equipment through the ethernet port , the router forwards the packet to the other ethernet port again connected to the testing equipment. When I increase the throughput to 70 mbps the testing equipment starts showing packet losses which should not happen as its a 10/100 mbps link. I am not able to understand where would the problem lie. Pls if someone can list the different issues due to which this problem is occurring, it will be really helpful</p>
<p class="MsoNormal"><br></p><p class="MsoNormal">Regards,</p><p class="MsoNormal">Mehul<br></p>
<p></p><p class="MsoNormal" style="margin: 6pt 0in 0.0001pt 0.25in; text-align: justify;"><br><span style=""></span></p>
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