Re: Comparing an old flow snapshot with some packet size data
Jeremy Porter <jerry@fc.net> Fri, 09 August 1996 01:56 UTC
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To: Andrew Partan <asp@partan.com>
Cc: Paul Ferguson <pferguso@cisco.com>, jhawk@bbnplanet.com, kwe@6sigmanets.com, big-internet@munnari.oz.au
Subject: Re: Comparing an old flow snapshot with some packet size data
In-Reply-To: Your message of "Thu, 08 Aug 1996 15:58:00 EDT." <199608081958.PAA01711@home.partan.com>
Date: Thu, 08 Aug 1996 20:24:03 -0500
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From: Jeremy Porter <jerry@fc.net>
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I remember arguing this about 6-9 months ago. Except from an exchange point point of view. Based on current traffic patterns I ended up recommend switched full duplex ethernet as the most cost effective and least complex protocol to run. FDDI has as lot of unneeded overhead. So unless you expect to see FDDI deployment to exceed X% of total LANs then total FDDI MTUs will be less than X%. (Assuming relativlity equal data volumes from ethernet and FDDI (which may not be true due to larger pipes at FDDI sites)). However some straight forward market research should be possible to determin relative sizes. And unless people start scrapping all that old technology we are going to have to design for lots of smaller packets rather than fewer large MTU packets. I would prefere to have fast packet switches and routers, than having to fragment packets inside my network. But that depends on the cost between packet fragmentation v. carrying more packets. Someone really should just design a larger MTU for 100BaseTX, i.e. 100BaseTX-BIG. With a MTU of 4470 say. In message <199608081958.PAA01711@home.partan.com>, Andrew Partan writes: >This is all interesting stuff. > >One question that I have been trying to figure out is > What size MTU should an ISP support on its backbone? > >If we view the future where lots of hosts are connected via ethernet >and fast ethernet & the like, then a MTU of 1500 would be 'correct'. > >If we think that the future will have lots of hosts connected via >Fddi or similar, then a MTU of 4470 would be 'better'. > >Any ideas? > --asp@partan.com (Andrew Partan) --- Jeremy Porter, Freeside Communications, Inc. jerry@fc.net PO BOX 80315 Austin, Tx 78708 | 1-800-968-8750 | 512-458-9816 http://www.fc.net
- Re: Comparing an old flow snapshot with some pack… Greg Minshall
- Re: Comparing an old flow snapshot with some pack… Dorian R. Kim
- Re: Comparing an old flow snapshot with some pack… John Hawkinson
- Re: Comparing an old flow snapshot with some pack… Michael A. Patton
- Re: Comparing an old flow snapshot with some pack… Greg Minshall
- Re: Comparing an old flow snapshot with some pack… Kent W. England
- Re: Comparing an old flow snapshot with some pack… Paul Ferguson
- Re: Comparing an old flow snapshot with some pack… Andrew Partan
- Re: Comparing an old flow snapshot with some pack… Greg Minshall
- Re: Comparing an old flow snapshot with some pack… Paul Ferguson
- Re: Comparing an old flow snapshot with some pack… Karl Denninger, MCSNet
- Re: Comparing an old flow snapshot with some pack… Evan Wetstone
- Re: Comparing an old flow snapshot with some pack… Kent W. England
- Re: Comparing an old flow snapshot with some pack… Kent W. England
- Re: Comparing an old flow snapshot with some pack… Jeremy Porter
- Re: Comparing an old flow snapshot with some pack… Dorian R. Kim
- Re: Comparing an old flow snapshot with some pack… Brian Carpenter CERN-CN
- Re: Comparing an old flow snapshot with some pack… Andrew Partan
- Re: Comparing an old flow snapshot with some pack… Andrew Partan
- Re: Comparing an old flow snapshot with some pack… Dorian R. Kim
- Re: Comparing an old flow snapshot with some pack… John Lekashman
- Re: Comparing an old flow snapshot with some pack… Robert Moskowitz
- Re: Comparing an old flow snapshot with some pack… Kent W. England
- Re: Comparing an old flow snapshot with some pack… Robert Moskowitz
- Re: Comparing an old flow snapshot with some pack… John Hawkinson
- Re: Comparing an old flow snapshot with some pack… Dorian R. Kim