Message-ID: <3F4FEFE9.4050704@as.arizona.edu>
Date: Fri, 29 Aug 2003 17:29:29 -0700
From: don fisher <dfisher@as.arizona.edu>
Organization: caao
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To: linux-kernel@vger.kernel.org
Subject: How to choose between ip 2 identical ethernet cards
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Sorry for a bit off topic.

I have a Dell 8200 laptop and a docking station, both with 3c905C 
ethenet chips. I wish to use the 3c905c internal to the docking 
station when the system is docked. Otherwise the 3c905c internal to 
the 8200. In my office I would like to run with both eth0 and eth1, 
but I need to be able to connect the correct interface to the correct 
cable. The same module is loaded for both devices.

The HOWTOs I found all assumed you had old cards with fixed addresses. 
These could be specified as options in modules.conf. From the Net-HOWTO:
         alias eth0 ne
         alias eth1 ne
         alias eth2 ne
         options ne io=0x220,0x240,0x300
But this does not seem to apply to the 3c59x driver. modinfo doesn't 
even list "io" as a valid option.

I did find:
  1) in /proc/ioports, one of the devices is listed with "(#2)" after it.
  2) in /etc/sysconfig/hwconf, one of the devices has
subDeviceId = 00d4, the other 00de.

I have tried changing the order of loading modules, along with a few 
vain attempts in modules.conf. For info, this is a Redhat system. 
Where is the definition as to which device will be associated with 
eth0 made?

Any assistance would be appreciated. I did try to RTFM, I just can't 
find the correct "fine manual";-)
thanks
don

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|    Don Fisher				  dfisher@as.arizona.edu  |
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