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Re: Using Linux as a SLIP router

daemon@ATHENA.MIT.EDU (Alan Cox)
Sun Sep 17 11:23:09 1995

From: Alan Cox <alan@cymru.net>
To: raju@xgroup.ernet.in
Date: Sun, 17 Sep 1995 13:01:45 +0100 (BST)
Cc: linux-net@vger.rutgers.edu
In-Reply-To: <m0stmT5-000C97C@gratis.xgroup.ernet.in> from "Raj Mathur" at Sep 16, 95 07:24:00 am

> - Has anyone tried a similar setup? Does it look viable? We're willing
> to splurge (!) on fast machines (P90? Faster?) so that the routing and
> serial comms do not suffer.

Splurge on a hot serial card rather than a hot PC.

> - What's a good multi-port card with stable drivers under Linux? From
> first impressions the Stallion and Comtrol (and perhaps Cyclom) cards
> look promising. Unfortunately, the issue may just be decided by which
> of these companies has representatives in India :-(

Cyclades ship anywhere air mail. We have a cyclades and several
rockport cards.

> - In initial tests gated keeps rejecting RIP routes which come with a
> metric of zero. Many of our existing KA9Q boxes send routes for the
> local Ethernet with this metric as the default. I'm using gated-3_0_3.

This is your KA9Q boxes configured wrongly to send self adverts in RIP. That
is due to the age of some of the original KA9Q code. Look in ip/rip.c in
KA9Q and follow the flag settings to find the bit to remove.

> exit. That's OK for a dial-up connection, but for leased circuits we
> need a program which will hang onto the interface regardless. Even
> slattach has problems: unless the circuit is up at the time it starts,
> setting the line to SLIP mode fails. I could (and will) hack it a bit
> so that it just keeps trying to set SLIP mode until it succeeds, but
> is there a more elegant solution?

Not at the moment. I'd be glad to receive one.

Alan

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