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Date:      Sat, 1 Feb 1997 15:06:47 +0100
From:      j@uriah.heep.sax.de (J Wunsch)
To:        hackers@FreeBSD.ORG (FreeBSD Hackers)
Subject:   Re: bisdn
Message-ID:  <Mutt.19970201150647.j@uriah.heep.sax.de>
In-Reply-To: <199702011315.OAA19288@freebie.lemis.de>; from grog@lemis.de on Feb 1, 1997 14:15:05 %2B0100
References:  <8720b6wb2e.fsf@localhost.xs4all.nl> <199702011315.OAA19288@freebie.lemis.de>

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As grog@lemis.de wrote:

> Why should you need ppp to run IP? [over ISDN - J.]

Because of the existing, well-defined negotiation protocol.

Almost all router manufacturers went away from their home-grown,
mutually incompatible ``IP over raw HDLC'' protocols.  I don't know of
any ISDN router that doesn't support PPP right now, but i know of
router manufacturers who dropped (or intend to drop) their legacy
``raw HDLC'' options.  They ended up reinwhenting the PPP wheel
anyway, regarding IP address negotiation, LQR etc.  Let alone
compatibility to other peers.

It's a often stated but unproven myth that PPP adds _much_ overhead.
You end up with the same near 8 KB/s throughput per 64 Kbit/s channel
nevertheless.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)



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