AT&T 3B* networking
Robert Halloran
rkh at mtune.ATT.COM
Sat Jul 23 01:18:54 AEST 1988
In article <1098 at woton.UUCP> riddle at woton.UUCP (Prentiss Riddle) writes:
>I gathered after interrogating some of our local AT&T technical and
>sales folks that the following is a chart of what's available in the
>way of networks for AT&T equipment:
>
> Starlan 3BNet TCP/IP
> --------- --------- ---------
> AT&T 3B15 no yes (RFS) yes (RFS)
> AT&T 3B2 yes (RFS) yes (RFS) yes (RFS)
> AT&T 3B1 yes (RFS) no no
> AT&T 6386 yes no no
> DOS clone yes no no
>
>A hitch that you can't see in this chart is that RFS (Remote File
>Sharing) can't be used between different kinds of networks. That means
>that while Starlan can give you RFS between a 3B2 and a 3B1, and either
>3BNet or TCP/IP can give you RFS between a 3B15 and a 3B2, there's no
>way to do RFS among all three.
>
>Questions:
>
>(1) Is all of the above correct?
Since RFS is particular to SVr3, there is no way to run it
on a 3B1 or PC/DOS system, period.
There IS (was?) an ethernet/TCP-IP option for the 3B1, though no
3Bnet. Order codes are 37422 for the board, 1030-008 for the
Wollongong software to drive it. This may no longer be available
with the closing down of the 7300 line.
I have seen ads for ethernet boards for 386 machines purporting
to support RFS under 386 Unix, though I have no experience with
them to be able to comment on usefulness.
>(2) I was under the impression that 3BNet was essentially UUCP on top
>of TCP/IP. I gather that the TCP/IP column refers to non-AT&T TCP/IP
>(Wollongong, perhaps). What is the difference between that and 3BNet?
3Bnet was an AT&T proprietary protocol used over ethernet hardware.
It is being phased out in favor of TCP/IP. Programs are available
to allow UUCP to run over either protocol suite.
>(3) I have some experience as a user of 4.2BSD NFS, and know about
>"rcp", "rsh", ".rlogin" files, etc. Does that bear any resemblance to
>RFS? How can I find out what RFS looks like to the user and to the
>administrator (especially security features)?
RFS relates to remote mounting of directories over a network.
Once done, the standard cp/mv commands work just fine. This has
nothing to do with remote shell access/program execution, and
RFS per se does not offer these facilities. The network you
use as a transport may also have applications which do, though.
Most network packages support 'cu' over the given network, for example.
For RFS administrative information, check out an admin's guide
for SVr3.
>(4) How does RFS interact with my plain old System V mail software?
Has nothing directly to do with it; your $MAIL may be a remotely
mounted directory, but mail/mailx/.... doesn't see any difference.
>(5) The cells of the above chart marked "yes" without "(RFS)"
>apparently refer to the ability of Starlan to let a 3B2 or a 6386 act
>as a file server for DOS machines. Correct? Does this interfere with
>the use of Starlan to provide RFS and other goodies among Unix
>machines?
Not to my knowledge, though bandwidth constraints may prove an issue.
>(6) Is there some basic document, article or book I should read so all
>this will be clear to me and I won't have to ask silly questions?
>
>-- Prentiss Riddle ("Aprendiz de todo, maestro de nada.")
>-- Opinions expressed are not necessarily those of my employer.
>-- riddle%woton.uucp at cs.utexas.edu uunet!ut-sally!cs.utexas.edu!woton!riddle
Bob Halloran
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Disclaimer: If you think AT&T would have ME as a spokesman, you're crazed.
Quote: "History is made at night. Character is what you are in the Dark."
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