Subject: Re: Multiple Ethernet Cards
From: Jason P. Stanford (jps3@Lehigh.EDU)
Date: Mon Dec 06 1999 - 11:13:36 MST
I have the exact same setup here: A "Platinum" G3/300/128MB with the
built-in 10BaseT and optional 100BaseT card. I had been using both,
thinking along the same lines as you are. But here's the catch: unless
you are connecting to two different networks, only one device will
actually be used. When I was using both, a 'netstat -i' showed that only
eth0 was being used. All traffic went through it. Essentially, it just
aliased eht1's IP#'s.
So, I switched off eth1, and set up ip aliases for all of the ip#'s I
had, and end up with eth0, eth0:0, etc. Works fine. The catch is that
TCP/IP, and others will bind to ip#'s and ports, but not devices. If you
are bridging or need to connect to two separate networks, then yet you
will need a separate NIC for each network.
Jason P.
Stanford
Phil Kirschner wrote:
>
> I have a beige G3 tower that came with a 10BaseT ethernet card, and
> into which I have installed a 100BaseT PCI card. My YDL box is set
> up to use eth1 which is the PCI card, and the built in eth0 card is
> inactive. Everything works fine, but it just occured to me that I
> could probably use both cards at the same time, and I was wondering
> if someone could explain what exactly would happen if I tried. There
> is lots of info out on the web about masquerading and IP chains and
> all that (which I don't know about either) but all I really want to
> know is this:
>
> If I turn on eth0, plug the built in card into my hub, and assign it
> a different IP address than my eth1 card, what will happen? Will I
> really be using both cards for more throughput? Could I do this
> without giving the second card a different IP address?
>
> I know there is a lot of How-To things out there about setting up
> multiple ethernet cards, but my intentions are not big, and I don't
> think I really understand what doing that entails.
>
> Any help would be greatly appreciated! (Be it descriptions or solutions.)
>
> -Phil
>
> " Ill believe computers can think when you ask one question
> and it replies, "That reminds me of a story. "
>
> -Gregory Bateson
-- Taurus: (April. 20--May 20) Try as you might, you will be unable to convince the judge that the big jewel heist was all the monkey's idea.
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