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Groups > comp.os.linux.networking > #689

Re: Unusual Packet Capture Between Linux and Windows

From Billy Mays <noway@nohow.com>
Newsgroups comp.os.linux.networking
Subject Re: Unusual Packet Capture Between Linux and Windows
Date 2011-10-11 11:40 -0400
Organization Aioe.org NNTP Server
Message-ID <j71o1v$5vm$1@speranza.aioe.org> (permalink)
References <j6nam6$a23$1@speranza.aioe.org> <j6ub02$76c$2@localhost.localdomain>

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On 10/10/2011 4:39 AM, Andy Furniss wrote:
> Billy Mays wrote:
>> Hey All,
>>
>>
>> I am trying to solve a networking problem between my Windows Desktop and
>> a 32 bit Ubuntu 10.04 Server. I believe that somewhere in the network
>> stack traffic is being modified in a hard to detect manner.
>
>
> If it's a gig nic
>
> ethtool -k eth0
>
> will tell you if it's using tcp segmentation offload.
>
> If it is you can also turn it off with ethtool.

eth1 is the one that seems to be having the problem, while eth0 is an 
interface I know to work (just to clarify the output below).  I ran 
ethtool on both of my interfaces and included only the differences 
between them.  I must admit I am not familiar with specifics of what 
they do:

Offload parameters for eth1:

tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
generic-segmentation-offload: on


Offload parameters for eth0:

tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
generic-segmentation-offload: off



Which of these are safe to change?  Would any of these possibly be the 
source of my error?

Thanks for any input,
Bill

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Thread

Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-07 12:51 -0400
  Re: Unusual Packet Capture Between Linux and Windows J G Miller <miller@yoyo.ORG> - 2011-10-07 17:08 +0000
    Re: Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-07 13:23 -0400
  Re: Unusual Packet Capture Between Linux and Windows Rick Jones <rick.jones2@hp.com> - 2011-10-07 19:04 +0000
  Re: Unusual Packet Capture Between Linux and Windows Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2011-10-07 22:39 +0300
    Re: Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-11 12:31 -0400
  Re: Unusual Packet Capture Between Linux and Windows Andy Furniss <spam@andyfurniss.entadsl.com> - 2011-10-08 14:00 +0100
  Re: Unusual Packet Capture Between Linux and Windows Andy Furniss <spam@andyfurniss.entadsl.com> - 2011-10-10 09:39 +0100
    Re: Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-11 11:40 -0400
      Re: Unusual Packet Capture Between Linux and Windows Andy Furniss <spam@andyfurniss.entadsl.com> - 2011-10-11 20:08 +0100
        Re: Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-11 20:13 -0400
          Re: Unusual Packet Capture Between Linux and Windows Andy Furniss <spam@andyfurniss.entadsl.com> - 2011-10-13 10:52 +0100
            Re: Unusual Packet Capture Between Linux and Windows Billy Mays <noway@nohow.com> - 2011-10-19 10:29 -0400

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