[techtalk] Re: Problems with two ethernet cards

[Lennart Sorensen]

> Here is the situation.
> 
> I am building a firewall with an old 486 33 Mhz.
> Motherboard = ???
> ram = 20 M
> hd = 800 M
>  2 3com 3c509 ethernet cards
>  1 56 k zircon internal modem
> 
> The problem.
> The network hangs.
> if one ethernet card is started I can ping the test machine easily. When the
> second is turned on everything freezes.
> 
> Things to know:
> interrupts
> eth0 - 10
> eth1 - 11
> both use ioport 0300 - 030f ( I think this is the problem)
> 
> Questions
> 
> Has anyone seen this before?
> Is there a fix?
> 
> For the record I haven't gone through the howto networking on this yet but
> plan to download the most recent.
> 
> Any help would be appriciated

Configure the cards for different io ports.  There is a 3c509 tool for linux
that I believe can do it, or you can use the dos setup program for it  Make 
sure they are not in PnP mode ofcourse.

You might have to remove one card to configere the other, since it would
be hard to differentiate them when they have the same address.

Lennart Sorensen