[15079] in North American Network Operators' Group
Re: FDDI or 100Mb Ethernet
daemon@ATHENA.MIT.EDU (Dean Anderson)
Fri Feb 6 16:38:10 1998
In-Reply-To: <Pine.BSF.3.91.980206143436.994C-100000@aries.ai.net>
Date: Fri, 6 Feb 1998 16:17:53 -0500
To: Deepak Jain <deepak@jain.com>, Lewis Eatherton <eathertl@segasoft.com>
From: Dean Anderson <dean@av8.com>
Cc: Charles Sprickman <spork@inch.com>, nanog@merit.edu
At 2:35 PM -0500 2/6/98, Deepak Jain wrote:
>FDDI can run full duplex, as for the other two things its a matter of
>opinion & conditions. (One I agree with, but still opinion).
For desktops, I agree completely that fast ethernet is the way to go. Fast
ether hubs are cheaper and easier to wire than cddi hubs (no cross over
cables required).
For a backbone, though, I would point out that FDDI is a token ring
protocol, so performance is always predictable. Ethernet, and fast ethernet
have performance knees. (Actually, I'm assuming Fast Ethernet will have a
knee at around 70% utilization. I haven't tested that it really does).
Also, both Fiber and Copper can be implemented with dual attached rings
which might be an advantage for a backbone link.
--Dean
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Plain Aviation, Inc dean@av8.com
LAN/WAN/UNIX/NT/TCPIP http://www.av8.com
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