Date: Tue, 28 Jan 1997 23:51:17 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: danny@panda.hilink.com.au (Daniel O'Callaghan) Cc: shovey@buffnet.net, robert@nanguo.chalmers.com.au, freebsd-isp@freebsd.org, hackers@freebsd.org Subject: Re: RFC 1323 default settings (was Re: progress report on connection problems) Message-ID: <199701282251.XAA03832@labinfo.iet.unipi.it> In-Reply-To: <Pine.BSF.3.91.970129092110.13981t-100000@panda.hilink.com.au> from "Daniel O'Callaghan" at Jan 29, 97 09:40:02 am
next in thread | previous in thread | raw e-mail | index | archive | help
> Since RFC 1323 deals with long fat pipes, which very few of us have, it > would make sense to turn the extensions off in the shipped /etc/sysconfig. agreed, although it is sad that such an approach practically bans any TCP extension because some broken equipment won't support it. > Those people who are communicating with TCP between the two ends of a 1.5 > Mbps satellite link, or an intercontinental 45 Mbps link, probably know > who they are and can turn the extensions on. I know that some people in not that it helps much since in many cases the application have hardwired settings for small (<64K) windows. As a matter of fact, has anyone been able to _actually_ make use of >64K windows (i.e. withouth the system changing settings under your feet) ? If yes, which version of FreeBSD ? > 'fatness' of the pipe for RFC 1323 purposes. Local area ATM might be > 'fat' but generally is not 'long' enough to cause the problems with RFC fast ethernet also peaks around 10 KB/ms, which means that going through a couple of (fast) local routers (not switches) might as well bring you close to BW*RTT > 64K Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199701282251.XAA03832>