Thread View: comp.dcom.lans.fddi
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Started by Jon S. Stumpf
Wed, 28 Oct 1992 21:37
FDDI/Ethernet Comparisons
Author: Jon S. Stumpf
Date: Wed, 28 Oct 1992 21:37
Date: Wed, 28 Oct 1992 21:37
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Sorry if this is an FAQ. In what situations does FDDI improve my life (response-time-wise) over Ethernet? Would Ethernet switching provide most of what FDDI provides in response for less cost? I am looking for responses more detailed than 100Mb > 10Mb. Thanks. - jss -------------------------------------------------------------------------- Jon S. Stumpf jss@sysdev.dmg.ml.com Merrill Lynch World Financial Center (212) 449-0498 Phone North Tower (212) 449-0912 Fax New York, N.Y. 10281-1315 --------------------------------------------------------------------------
Re: FDDI/Ethernet Comparisons
Author: anil.verma
Date: Thu, 05 Nov 1992 18:15
Date: Thu, 05 Nov 1992 18:15
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FDDI is better than Ethernet for the following reasons: 1. FDDI has built in redundancy features because of the dual ring topology. 2. FDDI has greater distance limitations - 2 KM for stations on the ring vs. 300 Meters for Ethernet. 3. FDDI provides thruput of 100 Mbps vs. 10 Mbps for Ethernet. Anil Verma
Re: FDDI/Ethernet Comparisons
Author: Vernon Schryver
Date: Thu, 05 Nov 1992 23:08
Date: Thu, 05 Nov 1992 23:08
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In article <1992Nov5.181527.19254@cbfsb.cb.att.com>, 1841hss@cbnewsb.cb.att.com (anil.verma) writes: > FDDI is better than Ethernet for the following reasons: > > 1. FDDI has built in redundancy features because of the dual ring topology. > ... I probably shouldn't say this, given the source of the butter on my bread. The "built in redundancy features" of FDDI are needed, and in no way extra. FDDI is not now and probably never will be nearly as reliable or robust in the face of real world hazards as 10MHz ethernet. FDDI starts with a ring instead of a bus, and works down from there. FDDI may be more reliable than IBM token ring, because of the dual ring. I don't know. That FDDI is less reliable is not bad. Ethernet is in general less reliable and robust than simple RS-232. Speed is not free. Vernon Schryver, vjs@sgi.com
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