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Linux - Networking This forum is for any issue related to networks or networking.
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Old 02-13-2003, 03:06 PM   #1
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Intel e1000 gigabit adapter with RH 7.2

I am having troubles with Intel gigabit adapters in a server. I cannot get a connection. I think the problem is that the adapters want to be at 1000 instead of 100. I don't have a gigabit switch. Can anyone tell me how to set the rates on adapters?

The funny thing is that I can launch a web browser and get it to start to load a web page and then it refuses the connection. This only happens once and then I don't get any connection at all. After I reboot it I can do the same thing. I think if I can force it to 100 it will be fixed, I hope.

Any help would be great. I am banging my head against the wall.
Old 02-13-2003, 03:19 PM   #2
Registered: Dec 2002
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Good grief.. popular one today..

ethtool -s eth0 speed 100

see man ethtool for more options.

You might also want to look at the 'autonegotiating' functions. If you're getting a connection which then dies you might have your card set to Full Duplex, and your switch to half. Or um.. the other way around. Or they might not negotiate properly. You would see the kind of behaviour you're seeing if that were the case.


Last edited by SlickWilly; 02-13-2003 at 03:21 PM.
Old 02-13-2003, 03:32 PM   #3
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Sounds like the right track but I can't seem to use ethtool. I tried man ethtool but there are no entries.
Old 02-14-2003, 08:45 AM   #4
Registered: Dec 2002
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You may not have it installed.

You may also not have it on your path. Try

locate ethtool

It should bring up something like :


I'm suspecting though, as you can't man it, it's not installed. If you're using RedHat you should be able to find it on the CD's. You're looking for something like :


Which is from a redhat 7.3 install CD. Or look at :

for the tarball.



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