[15081] in North American Network Operators' Group
Re: FDDI or 100Mb Ethernet
daemon@ATHENA.MIT.EDU (Paul Ferguson)
Fri Feb 6 17:08:27 1998
Date: Fri, 06 Feb 1998 16:51:11 -0500
To: Dean Anderson <dean@av8.com>
From: Paul Ferguson <ferguson@cisco.com>
Cc: nanog@merit.edu
In-Reply-To: <v03007802b10127df3e76@[198.3.136.121]>
Okay. Playing my usual devil's advocate role, please tell me what
migration path lies beyond FDDI for faster connectivity?
- paul
At 04:17 PM 2/6/98 -0500, Dean Anderson wrote:
>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.
>
