Re: full/half duplex

[Scott Wegener <wegster mindcore net>]

As far as I know(have never SEEN otherwise), the only way to run full
duplex is via a switch, and only some of them at that.  Or of course a
crossover cable.  Having said that, and assuming this is the case, you
have two options:
1.  Check the switch software/firmware, a lot of them have monitoring
tools.
2.  Dig into the ethernet module code and check for the flags that can
be set to put it into 'verbose debug mode.'  I don't recall what they
were offhand, but you can pass the options in /etc/modules.conf.  Can't
speak for other people's drivers, but the ee-pro drivers done by James
Becker, and I believe his Vortex one as well, have several different
levels of debugging info.  Find the 'right flag,' pass it into the
module(assuming you have it built as a module, if not you'll have to
hardcode a #define or two in the code and rebuild the kernel), make SURE
the original module is unloaded(rmmod after using
/etc/rc.d/init.d/netowkr stop), reload the module and check
/var/log/messages.

Hope that helps, it really isn't as bad as it sounds ;)

James Michael Keller wrote:
> 
> Where would I go about checking if my 10 base T ehternet is set to full
> of half duplex?
> 
> I need to make sure it's half duplex because VNC is causing collisions
> due to the windows system I'm connecting to from a linux box, loading
> background wallpaper that is on a SAMBA shared drive from the linux box.
> 
> So whenever it sending information both ways, I get solid collisions (
> on my hub light and iptraf's window )
> 
> And VNC dies.
> 
> I'm stumped, both systems have a SMC elite 16 card and it worked fine
> for a while.
> 
> --
> ===========================================================
>         James Michael Keller | jmkeller radix net
>               http://www.radix.net/~jmkeller
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> Contents (c)1998 James Michael Keller.  All rights reserved
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