Network Duplex settings

[Wil McGilvery]

I found this on another message board. 

Assuming we are using the eepro100 driver you need to make the following entries in /etc/modules.conf

alias eth0 eepro100
options eepro100 options=0x30

The various options are:
Hex Decimal Meaning
0x10 16 Force Full-Duplex operation (must be used with 0x20 or 0x40)
0x20 32 Force 100mbps-only operation
0x30 48 Force 100mbps-only with Full Duplex
0x40 64 Force 10mbps-only
0x50 80 Force 10mpps-only with Full Duplex

I also found this as well.

man mii-tool for syntax on the command, but if your device supports it, then 

/sbin/mii-tool -F 100BaseTx-FD eth0 

will force eth0 to 100/FD.


HTH

Regards,
?
Wil McGilvery
Manager, Digital Media

?
Lynch Technologies Inc.
416-744-7191
1-888-622-3729
416-744-0406? FAX
www.lynchdigital.com



-----Original Message-----
From: Matthew Carpenter [mailto:matt at eisgr.com] 
Sent: Wednesday, October 09, 2002 2:41 PM
To: sxs
Subject: Network Duplex settings

Now I have never run into a problem with this, since Linux drivers seem to
autonegociate pretty well even with 3com cards  :)
But I would like to know if anyone can tell me just how you set a NIC to
be hard-coded at 100/FD...  I ran across my first case of needing to do
this today, as we have a linux box plugged into a Cat2900 with 100/FD
non-auto settings for the port.  Taking care of this was as easy as
setting the switchport to auto and bouncing the interface, HOWEVER, that
is against the corporate standards, so I need to know how to do this in
the future without fiddling with the switch.

Thanks!
Matt
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