[1158] in linux-net channel archive
Re: X.25 related material wanted...
daemon@ATHENA.MIT.EDU (Alan Cox)
Mon Oct 2 13:36:25 1995
From: iialan@iifeak.swan.ac.uk (Alan Cox)
To: andrew@andy.alt.za (Andrew Cameron)
Date: Mon, 2 Oct 1995 09:54:14 +0100 (BST)
Cc: philip@ldjnb.sfos.ro, linux-net@vger.rutgers.edu,
linux-admin@vger.rutgers.edu, rom-unix@applicom.co.il
In-Reply-To: <Pine.LNX.3.91.950930214348.107A-100000@andy.alt.za> from "Andrew Cameron" at Sep 30, 95 09:44:56 pm
> Have you looked at KA9Q for Linux. Another option would be to look at the
> AX25 Support In Linux.
AX.25 and X.25 are very different. X.25 is built on two layers
[ IP / X.29 / whatever ]
[ X.25 Protocol Layer [end-end]]
[ LAPB protocol layer [hop-hop]]
Amateur radio AX.25 is a single LAPB like layer with some extensions and
clean ups like repeater support that radio needs.
LAPB itself is not that complex and is done by the hardware on a good high
speed board, or software on the low end cheap ones. X.25 is quite complex
but for carrying IP over X.25 you only need implement a subset of the
requirements for full X.25.
If you are bored there is also X.29 you can sit on top of X.25 and that then
provides a highly efficient virtual terminal service.
Alan
