Re: Packet capture question

From: Conrad Knauer <atheoi_at_no.spam.please>
Date: Wed Jan 03 2007 - 05:14:20 CST

On 1/2/07, Scott Walde <scott@waldetech.ca> wrote:

> I was having some really serious network issues between a VMWare WinXP VM
> and it's Linux host until I ran the following commands on the host:
> /usr/sbin/ethtool -K eth0 tso off
> /usr/sbin/ethtool -K eth0 tx off
>
> I don't honestly have a clue what they mean, or what they do, but they
> solved my issue.

LOL! Magic and More Magic :)
(http://www.isri.unlv.edu/~slumos/jargon/a_story_about_magic_)

As per the man page for ethtool, it looks like you should be able to
combine those two lines:

ethtool -K eth0 tso off tx off

-K is the setting to "change the offload parameters of the specified
ethernet device"
tso is used to "Specify if tcp segmentation offload is enabled"
(TSO: http://en.wikipedia.org/wiki/TCP_segmentation_offloading)
tx is used to "Specify if TX checksumming is enabled."
(tx = transmission?)

How curious...

CK
Received on Wed Jan 3 05:14:35 2007

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