[CentOS] Hard-set network via ifup scripts...

Ray Van Dolson wrote:
> Anyone know off the top of their head the "right" way to hard set a
> link automatically to 100Mbps Full Duplex, etc using the ifup or ifcfg
> files?
> 
> Don't see options in the scripts that might cover this, but maybe
> there's a more elegant way to do it than to do something in rc.local or
> hack up the ifup files myself...

You can add a line like:

ETHTOOL_OPTS="speed 100 duplex full autoneg off"

to the /etc/sysconfig/network-scripts/ifcfg-eth? files.  But note that 
if you hard set one side of a link you must do the same on the other 
(switch) side or it will take the lack of negotiation to mean that it 
must assume half duplex.

-- 
   Les Mikesell
     lesmikesell at gmail.com