topic Re: etho = 100/full in Operating System - Linux

etho = 100/full

Kevin_194 — Wed, 08 Mar 2006 07:55:12 GMT

Hi,

I see with
ethtool eth0
the Duplex is "half".

I want to change it to full.
ethtool -s -eth0 autoneg off
ethtool -s eth0 duplex full

It is OK but after restarting the server the configuration go back to "half".

I try setting the options in /etc/sysconfig/networking/ifcfg-ethX

ETHTOOL_OPTS="speed 100 duplex full autoneg off"

After restart the configuration go still back tu "half".

What is wrong?

Thank you
Kevin

Re: etho = 100/full

Sergejs Svitnevs — Wed, 08 Mar 2006 08:05:17 GMT

Assuming you have Redhat OS and your network card device is identified as eth0, you should add the following line:
ETHTOOL_OPTS="speed 100 duplex full autoneg off"
at the end of the file:
/etc/sysconfig/network-scripts/ifcfg-eth0

Just my 2 cents.
Regards

Re: etho = 100/full

Kevin_194 — Wed, 08 Mar 2006 08:31:26 GMT

Hi,

It is SUSE 9.
I do not have
/etc/sysconfig/network-scripts

and under
/etc/sysconfig/network/scripts/
I do not have ifcfg-eth0

Regards
Kevin

Re: etho = 100/full

Ivan Ferreira — Wed, 08 Mar 2006 08:50:08 GMT

Not sure about suse, but you should check your /etc/modules.conf or modprobe.conf if there are some parameters that may be conflicting with ethtool, also you could set the ethtool command in /etc/rc.local, this is the last script executed instead of configuring the the interface file.

Re: etho = 100/full

Sergejs Svitnevs — Wed, 08 Mar 2006 09:06:41 GMT

Please check out the output of "ethtool -i eth0".
if Ethernet driver is "e100", then in the "/etc/modules.conf" file add the options lines:
alias eth0 e100
options e100 e100_speed_duplex=4

if "e1000", then add
alias eth0 e1000
options e1000 Speed=100 Duplex=2

if "bcm5700", the add
alias eth0 bcm5700
options bcm5700 line_speed=100 full_duplex=1 auto_speed=0

then reboot your pc

Regards

Re: etho = 100/full

Kevin_194 — Wed, 08 Mar 2006 09:18:44 GMT

Hi,

"ethtool -i eth0" = driver e1000

There is no entry inside of "/etc/modules.conf" . So it is empty.
But the "etc/modprobe.conf" hast a lot of entries.
Where do I have to put:

alias eth0 e1000
options e1000 Speed=100 Duplex=2

Regards
Kevin

Re: etho = 100/full

Vipulinux — Wed, 08 Mar 2006 09:21:15 GMT

Hi Kevin

Just add
ethtool -s -eth0 autoneg off
ethtool -s eth0 duplex full

to /etc/rc.local

Cheers

Re: etho = 100/full

Kevin_194 — Wed, 08 Mar 2006 09:25:51 GMT

Hi,

sorry but there is no:
/etc/rc.local

Regards
Kevin

Re: etho = 100/full

Steven E. Protter — Wed, 08 Mar 2006 09:28:34 GMT

Shalom Kevin,

if the force code does not work, replace the NIC.

If that does not work, suspect the network switch port configuration, which has not been mentioned.

Many older switches default to half duplex.

SEP

Re: etho = 100/full

Vipulinux — Wed, 08 Mar 2006 09:37:06 GMT

Hi
What distribution are u using?

You can create a script that executes the commands:
ethtool -s -eth0 autoneg off
ethtool -s eth0 duplex full

and put the script in /etc/rc.d/rc3.d/

This will work

Cheers

Re: etho = 100/full

Sergejs Svitnevs — Wed, 08 Mar 2006 10:14:20 GMT

you only need to add:

alias eth0 e1000
options e1000 Speed=100 Duplex=2

to the "/etc/modules.conf" file and restart.

Re: etho = 100/full

Andrew Cowan — Thu, 09 Mar 2006 02:33:10 GMT

Kevin,

The problem here is that everyone here except you is talking Redhat not Suse.

The files are there but have different names. They're normally in "/etc/init.d" and are linked to "/etc/init.d/rc.d" and "rc?.d" and so you could put the "ethtool" commands in here.

The easiest way to configure your devices is via Yast-2 from the GUI, then select networking devices, and your Ethernet card. This should show all the detected and configured device.
Assuming that your NIC is already in the list, simply select it and select "Configure", then add the duplex as an option. Once saved this should survive reboots.

Re: etho = 100/full

Andrew Cowan — Thu, 09 Mar 2006 02:34:59 GMT

Kevin,

Further Suse documentation is available at:http://www.novell.com/documentation/

Good luck,
Andrew

Re: etho = 100/full

dipesh_2 — Thu, 09 Mar 2006 03:13:05 GMT

Hi kevin

Use the following command

#mii-tool -F 100baseTx-FD eth0 (For full Duplex Speed)
#mii-tool -F 100baseTx-HD eth0 (For Half Duplex Speed)

Re: etho = 100/full

Subramaniyan.S — Mon, 13 Mar 2006 06:05:40 GMT

Hi,

Propably the following link may help you.

http://www.cyberciti.biz/faqs/2006/01/linux-lan-card-find-out-full.php

rgds,

SSN