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Newsgroups: comp.os.linux.networking,comp.unix.bsd.netbsd.misc,comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!news.vbc.net!alpha.sky.net!news.zNET.net!news.nothingbutnet.net!nntp.snfc21.pbi.net!news.PBI.net!cbgw3.att.com!cbgw1.att.com!fnnews.fnal.gov!uwm.edu!math.ohio-state.edu!howland.reston.ans.net!Germany.EU.net!news.dfn.de!news.ruhr-uni-bochum.de!news.rwth-aachen.de!news.rhrz.uni-bonn.de!mpifr-bonn.mpg.de!fs1.mpifr-bonn.mpg.de!souva From: souva@aibn58.astro.uni-bonn.de (Ignatios Souvatzis) Subject: Selective Hole NAK (Was: Re: TCP latency) In-Reply-To: Pedro Roque Marques's message of 13 Jul 1996 22:45:09 +0100 Message-ID: <SOUVA.96Jul16134620@aibn58.astro.uni-bonn.de> Sender: news@mpifr-bonn.mpg.de Nntp-Posting-Host: aibn58 Reply-To: isouvatzis@astro.uni-bonn.de Organization: Radioastronomisches Institut der Universitaet Bonn, Bonn, FRG References: <4paedl$4bm@engnews2.eng.sun.com> <31DC8EBA.41C67EA6@dyson.iquest.net> <4rlf6i$c5f@linux.cs.helsinki.fi> <31DEA3A3.41C67EA6@dyson.iquest.net> <Du681x.2Gy@kroete2.freinet.de> <31DFEB02.41C67EA6@dyson.iquest.net> <4rpdtn$30b@symiserver2.symantec.com> <x7ohlq78wt.fsf@oberon.di.fc.ul.pt> <Pine.LNX.3.91.960709020017.19115I-100000@reflections.mindspring.com> <x74tnfn35s.fsf@oberon.di.fc.ul.pt> <4s33mj$fv2@innocence.interface-business.de> <x7ivbrddzu.fsf@oberon.di.fc.ul.pt> Date: Tue, 16 Jul 1996 11:46:20 GMT Lines: 17 Xref: euryale.cc.adfa.oz.au comp.os.linux.networking:45397 comp.unix.bsd.netbsd.misc:4072 comp.unix.bsd.freebsd.misc:23721 In article <x7ivbrddzu.fsf@oberon.di.fc.ul.pt> Pedro Roque Marques <roque@di.fc.ul.pt> writes: TCP itself as a very poor behaviour if you have > 50% packet loss on a link. By design TCP assumes that links (physical links) have a low packet This is true for classical TCP. However, some RFC (was it 1323(?)) proposes a mechanism to selectively NAK holes in the stream, which would help. I'm not aware wether this is implemented anywhere. Regards, Ignatios Souvatzis -- Ignatios Souvatzis Cute quote: "You should also consider that the ST comes fully equipped with a text adventure. It's called ST Basic." Amylaar@meolyon.hanse.de