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Date:      Mon, 19 Feb 2001 22:13:08 -0600 (CST)
From:      Chris Dillon <cdillon@wolves.k12.mo.us>
To:        Elliot Finley <efinley@efinley.com>
Cc:        <freebsd-questions@FreeBSD.ORG>
Subject:   Re: how many switches?
Message-ID:  <Pine.BSF.4.32.0102192204130.46588-100000@mail.wolves.k12.mo.us>
In-Reply-To: <acm39tkm6gaac8oe4as01e94i46b6bic59@4ax.com>

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On Mon, 19 Feb 2001, Elliot Finley wrote:

> This isn't exactly a FreeBSD question, but since it's going to be
> an all FBSD network... :-)
>
> I know that I can only go through 3-4 hubs before I have timing
> issues.  My question is: how many switches can I go through?  it
> seems like it would be unlimited as long as the packet passed
> through them and the response came back before the application
> timed out.  This is the case isn't it?  Since a switch uses
> store-and-forward.

That should be the case, yes.  Not all switches use the
store-and-forward method, but that is irrelevant to your situation,
except that the other methods reduce the switching latency that is
involved with the store-and-forward method, thus reducing the possible
time-out you mention, which would be very unlikely that you met unless
it were a very short timeout and/or you were linking millions of
switches that ran the circumference of the planet several times over.


-- Chris Dillon - cdillon@wolves.k12.mo.us - cdillon@inter-linc.net
   FreeBSD: The fastest and most stable server OS on the planet.
   For IA32 and Alpha architectures. IA64, PPC, and ARM under development.
   http://www.freebsd.org




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