topic Re: Redhat linux ES 5 Nic speed problem in Operating System - Linux

Redhat linux ES 5 Nic speed problem

shabash — Wed, 26 Nov 2008 06:55:13 GMT

By default i have ethtool installed.
when i run the command ethtool

Settings for eth0:
Current message level: 0x00000007 (7)
Link detected: yes
but its not showing duplex speed why??
i need to set 1000 duplex speed on interface eth0.
i have add the entry in the ifcfg-eth0 file
ETHTOOL_OPTS="speed 100 duplex full autoneg off"

but still i am not able to see the speed of NIC eth0.
eth0 is build-in DL380 G5.

Can any one help me????

Re: Redhat linux ES 5 Nic speed problem

Steven E. Protter — Wed, 26 Nov 2008 11:44:23 GMT

Shalom,

see mii-tool

I would surmise if the ETHTOOL_OPTS you have defined fail to work, you have a problem on the switch, with hard coded configuration at a speed other than 1000 BaseT full duplex.

Have the switch checked.

SEP

Re: Redhat linux ES 5 Nic speed problem

Prasu — Wed, 26 Nov 2008 12:39:12 GMT

If it is showing autonegotiataion on , it wil automatically change according to your switch speed.

reagrds
Prasu

Re: Redhat linux ES 5 Nic speed problem

Simeon Harwood — Thu, 27 Nov 2008 10:05:47 GMT

If everything is OK at the hardware level, you could try and hardcode the speed and duplex for that card: -

# vi /etc/sysconfig/networking-scripts/ifcfg-eth0
ETHTOOL_OPTS="speed 100 duplex full autoneg off"

# service network restart
# ethtool eth0
OR
# mii-tool eth0

Sime.

Re: Redhat linux ES 5 Nic speed problem

shabash — Sun, 30 Nov 2008 08:10:26 GMT

i want to check on my os side the speed on linux machine lan interface.
the ethtool only show me
link connected nothing else.

As in other version of linux they show all the duplex speed but in redhat linux 5 which command should i use to check duplex speed.

mii-tool is necessary to install?
Can we check without installing it?

Any help????