Path: utzoo!attcan!uunet!mailrus!cs.utexas.edu!usc!ucsd!ucbvax!VAX.FTP.COM!jbvb
From: jbvb@VAX.FTP.COM (James Van Bokkelen)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: ARCNET <--> Ethernet
Message-ID: <9003161443.AA15334@vax.ftp.com>
Date: 16 Mar 90 14:43:34 GMT
References: <31338@sequent.UUCP>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 22

If you mean "gateway", as in ISO-ese, where a high-level protocol of one
family (e.g. file transfer, remote login) is translated to the equivalent
in another family, the only commercial product I know of is the InterLAN
TCP/IP gateway.  This is an Ethernet board and software which install in
your server; you run Netware-based protocols to get to the server and it
translates them into Telnet and FTP on the Ethernet.

TWG's WIN/PC offers a different approach, that of encapsulating Ethernet
datagrams in Netbios datagrams, which get forwarded to a router, which
forwards them in the conventional Ethernet encapsulation.

Philip Prindeville did a version of the PC-IP freeware which ran on ARCNet
while he was at McGill.  I don't know if this has been included in the
Harvard PC-IP release (on husc6.harvard.edu), or what McGill used as
an IP router.  He also wrote RFC 1051, defining an IP encapsulation for
ARCnet.  However, I have heard recent rumblings that some sort of new
hack allows ARCnet's MTU to be increased from 508 bytes to something
on the order of 1Kb.  If this gets widely implemented, it would require
that the encapsulation RFC be re-issued, and the drivers revised...

James B. VanBokkelen		26 Princess St., Wakefield, MA  01880
FTP Software Inc.		voice: (617) 246-0900  fax: (617) 246-0901