On Thu, Jul 7, 2011 at 3:43 PM, Nicolas Thierry-Mieg <Nicolas.Thierry-Mieg at imag.fr> wrote: > Rudi Ahlers wrote: >> On Thu, Jul 7, 2011 at 3:22 PM, R - elists<lists07 at abbacomm.net> wrote: >>> rudi >>> >>> when migrating some rackmount HP servers running Centos4 from hard coded 100 >>> meg fdx to auto gigE that we had to >>> >>> 1) remove this from our ifcfg-ethX files >>> >>> ETHTOOL_OPTS="speed 100 duplex full autoneg off" >> >> I don't see those options listed: >> >> root at zaxen01:[~]$ cat /etc/sysconfig/network-scripts/ifcfg-eth0 > > you're not looking in the right place, look in TFM: > /usr/share/doc/initscripts-*/sysconfig.txt > _______________________________________________ Interesting. It *almost* looks like a plain text (i.e. instructions / manual) file to me and there's 2 lines with the option you specified: ETHTOOL_OPTS=... Any device-specific options supported by ethtool. For example, if you wanted to force 100Mb full duplex: ETHTOOL_OPTS="speed 100 duplex full autoneg off" The NIC is connected @ 1GB, as per the switch interface, but I can't seem to verify it on CentOS directly, and I would prefer not to change this file since it shows as 100MB (if that 2nd line with ETHTOOL_OPTS is an actual configuration option, and not just comment) but there's no mention of Flow Control in that file. I don't know what impact this could have, if any at all. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532