[2815] in linux-net channel archive
Re: Router/Gated config
daemon@ATHENA.MIT.EDU (John Burton)
Tue May 7 08:21:29 1996
Date: Mon, 6 May 1996 08:40:34 -0400 (EDT)
From: John Burton <john@piper.gats.hampton.va.us>
To: "H. Peter Anvin" <hpa@transmeta.com>
cc: submit-linux-dev-net@ratatosk.yggdrasil.com
In-Reply-To: <4mdp62$82f@palladium.transmeta.com>
On 3 May 1996, H. Peter Anvin wrote:
> In article <Pine.LNX.3.91.960502083814.11008D-100000@kraken.port-aransas.k12.tx.us>,
> RHS Linux User <zap@kraken.port-aransas.k12.tx.us> wrote:
>
> >As for your question about mixed network classes on one hub, the answer
> >is a resounding -NO-, unless you can partition the hub (then it would
> >really be two hubs tho, wouldn't it :).
> >
> >>From what I remember of the subject, all nodes on a given ethernet
> >segment must have the same network address.
>
> Correct.
Ummm...hmmmm..."all nodes on a given ethernet segment must have the same
network address"...Ummm then I guess our setup isn't working and I'm not
sending this e-mail. Our setup:
1. 4 Class C networks on one ethernet segment (building backbone)
2. 2 T-1 Connections & 2 Cisco routers
3. Less than 100 machines distributed across the 4 Class C's
4. Routers handle routing from one Class C to another
Don't ask *why* we have it set up this way...its a legacy left over from
when the entire building was connected to a much larger LAN via a bridge
and *everyone* was on the same Class B network.
The 4 Class C's are *not* a contiguous block. Using unmanaged hubs, we
can put 4 machines with 4 different network addresses on the same hub. It
works fine, but can be a performance problem when communicating from
one Class C to another since the packets first go to the router on one
network, and then a bounced back down the same ehternet, but a different
Class C. Fortunately we don't need the 4 networks talking to each other...
Using linux, I can have one machine, with one interface card, sit and
listen on all 4 networks
John
John Burton GATS, Inc.
j.c.burton@gats.hampton.va.us 28 Research Drive
j.c.burton@larc.nasa.gov Hampton, VA 23666
(804) 865-7491 (voice) (804) 865-1021 (fax)
