From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from web30105.mail.mud.yahoo.com (web30105.mail.mud.yahoo.com [209.191.69.37]) by bilbo.ozlabs.org (Postfix) with SMTP id A5D8DB71A2 for ; Thu, 18 Jun 2009 03:35:23 +1000 (EST) Message-ID: <284735.75888.qm@web30105.mail.mud.yahoo.com> Date: Wed, 17 Jun 2009 10:35:20 -0700 (PDT) From: Parav Pandit Subject: Re: ethernet packet drop To: linuxppc-dev@lists.ozlabs.org, Mehul Chadha MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1752692954-1245260120=:75888" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --0-1752692954-1245260120=:75888 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Couple of points to debug, 1. Do you see any pause frames getting generated by Router device and not h= onoured by Spirent test equipment? 2. Checkout the MPC8248' load if you have console connected to it, using #t= op command. Parav --- On Wed, 6/17/09, Mehul Chadha wrote: From: Mehul Chadha Subject: ethernet packet drop To: linuxppc-dev@lists.ozlabs.org Date: Wednesday, June 17, 2009, 8:23 PM Hello everyone, =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 I am wor= king on a project for router development. The basic specifications of the router are as follows: =0A=0A=0A=0A=B7=A0=A0=A0=A0=A0=A0=A0=A0=0ASupports MPC8248 - 32-bit PowerQU= ICC II Communication Processor running=0Aat 400 MHz (Max) core frequency, 2= 00 MHz (Max) CPM, and 100MHz (Max) external=0Abus frequency.=0A=0A=B7=A0=A0= =A0=A0=A0=A0=A0=A0=0A64-bit wide 256-MByte synchronous DRAM (soldered=0Aon-= board), =A0=A0consisting of 4 no. devices=0Aof 8M x 16 x 4, residing on 60X= bus (PBI mode), controlled by SDRAM machine.=0A=0A=B7=A0=A0=A0=A0=A0=A0=A0= =A0=0A256 MB=0ANAND Flash, organized as 256M x 8, buffered from 60X bus, co= ntrolled by UPM=0Amachine.=0A=0A=B7=A0=A0=A0=A0=A0=A0=A0=A0=0AUpto 8MB=0ANO= R Flash, Boot sector (bottom) type, organized as 8M x 8, buffered from 60X= =0Abus, controlled by GPCM machine.=20 =0A=0A=0A=0A=B7=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 Linux Kernel version: linux-2= .6.16.40=0A While testing my router with the spirent test equipment, the 2 ethernet por= ts of the router are connected to the testing equipment. I send data from t= he testing equipment through the ethernet port , the router forwards the pa= cket to the other ethernet port again connected to the testing equipment. W= hen I increase the throughput to 70 mbps the testing equipment starts showi= ng packet losses which should not happen as its a 10/100 mbps link. I am no= t able to understand where would the problem lie. Pls if someone can list t= he different issues due to which this problem is occurring, it will be real= ly helpful=0A Regards,Mehul =0A=0A =0A=0A -----Inline Attachment Follows----- _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev=0A=0A=0A --0-1752692954-1245260120=:75888 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Couple of points to debug,

1. Do you s= ee any pause frames getting generated by Router device and not honoured by = Spirent test equipment?

2. Checkout the MPC8248' load if you have co= nsole connected to it, using #top command.

Parav

--- On We= d, 6/17/09, Mehul Chadha <mehulc87@gmail.com> wrote:

From: Mehul Chadha <mehulc87@gmail.com>Subject: ethernet packet drop
To: linuxppc-dev@lists.ozlabs.org
Date= : Wednesday, June 17, 2009, 8:23 PM

Hello = everyone,

         &nbs= p;             = I am working on a project for router development.

The basic specific= ations of the router are as follows:
=0A=0A

=B7=            Linux Kernel version: linux-2.6.16.40

=0A


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 tes= ting equipment through the ethernet port , the router forwards the packet t= o the other ethernet port again connected to the testing equipment. When I = increase the throughput to 70 mbps the testing equipment starts showing pac= ket 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 dif= ferent issues due to which this problem is occurring, it will be really hel= pful

=0A


Regards,

Mehul

=0A=0A


=0A=0A

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