[AG-TECH] Problems with Duplex Network settings for Dell server

Todd Zimmerman toddz at sfu.ca
Mon May 19 13:50:01 CDT 2008


Brad Knowles wrote:
> Ben Green wrote:
> 
>> To run a VenueServer/BridgeServer requires a full duplex/autonegotiation
>> 'off' network configuration on the ethernet device.
> 
> I'm confused.  Why is this necessary?

I know it was necessary on my Dell server because the autoneg was failing.

> 
> Note that for GigE, you *can't* turn off auto-negotiation -- it's 
> required by the spec.  Some GigE devices may not work well or at all if 
> you try to turn off auto-negotiation for other speeds, too.

IIRC, Brad is correct.  For GigE, autoneg off is invalid.  You _must_ autonegotiate.  However, I 
still force.  Here is my ETHTOOL_OPTS line that seems to work:

ETHTOOL_OPTS="speed 1000 duplex full autoneg on"

Cheers,

Todd

-- 
Collaboration & Visualization Technician
WestGrid - www.westgrid.ca
IRMACS - www.irmacs.com
Ph. 778.782.6979
Todd Zimmerman - toddz at sfu.ca




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