[comp.protocols.tcp-ip.ibmpc] ARCnet

jbvb@ftp.UUCP (James Van Bokkelen) (11/06/87)

Is there any standard for ARCnet encapsulation of IP?  Has anyone even done it?
Given things I have heard from ARCnet manufacturers, example hardware drivers
are available.

The process looks like:

1. Locate or develop a standard for IP encapsulation and address resolution.
I have been told that ARCnet has a 1-byte hardware address.  This would seem
to point at a convention like ProNET (map low byte of the hardware address to
the low byte of the IP address), instead of a permutation of ARP.

2. Obtain an example hardware driver and some hardware.  Starting with MIT's
P1300 driver, I would imagine that one could get on-line in a month or
less.  I would probably have already done this if I had time, or felt
sufficiently wizardly to promulgate an encapsulation scheme.

James B. VanBokkelen
FTP Software Inc.

PAP4@AI.AI.MIT.EDU ("Philip A. Prindeville") (11/10/87)

> Date: Fri, 6 Nov 87 12:27:19 est
> From: ftp!jbvb@harvard.harvard.edu (James Van Bokkelen)
> Subject: ARCnet

> Is there any standard for ARCnet encapsulation of IP?  Has anyone even done
> it?  Given things I have heard from ARCnet manufacturers, example
> hardware drivers are available.

True on both counts.  The ARCnet Trade Assocation has assigned 240 (dec) to
IP, and 241 to ARP.  The contact for information on IP encapsulation is
Billy Cox at Datapoint, (512) 699-7151.  I have requested info on what the
current state of IP over ARCnet is.  I will summarize when I get the info.
Also, I have sample (polled -- sigh) driver sources.

> The process looks like:

> 1. Locate or develop a standard for IP encapsulation and address resolution.
> I have been told that ARCnet has a 1-byte hardware address.  This would seem
> to point at a convention like ProNET (map low byte of the hardware address to
> the low byte of the IP address), instead of a permutation of ARP.

Yeah, that's how I'm doing mine.  It means that gateways can't proxy ARP,
but...

> 2. Obtain an example hardware driver and some hardware.  Starting with MIT's
> P1300 driver, I would imagine that one could get on-line in a month or
> less.  I would probably have already done this if I had time, or felt
> sufficiently wizardly to promulgate an encapsulation scheme.

> James B. VanBokkelen
> FTP Software Inc.

I have a couple of PDI508s that are supposedly compatible with the Standard
MicroSystems PC IFs.  I'm using the P1300 driver as a model.  I think you know
where the cards are... Can't make you time (beyond my own humble spellcasting),
but I've got a wand around her somewhere...

-Philip