Date: Thu, 8 May 1997 13:20:01 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: fenner@parc.xerox.com (Bill Fenner) Cc: tom@sdf.com, fenner@parc.xerox.com, smc@servtech.com, danny@panda.hilink.com.au, freebsd-hackers@FreeBSD.ORG Subject: Re: FTP Performance Message-ID: <199705082020.NAA25464@phaeton.artisoft.com> In-Reply-To: <97May8.111829pdt.177486@crevenia.parc.xerox.com> from "Bill Fenner" at May 8, 97 11:18:22 am
next in thread | previous in thread | raw e-mail | index | archive | help
> Tom Samplonius <tom@sdf.com> wrote: > > How would this misconfiguration occur? Just two routers with > >mis-matched MTU/MRU sizes? > > No, the only way for PMTU discovery to fail is for a router to not > return ICMP fragmentation required errors. I don't know how to > configure a router to do this, since it's required by RFC1812, > but perhaps there's a firewall in the way. Or a proxy server. It's impossible to legally proxy this as anything but unicast boradcasts, and it requires a *very* smart proxy, then, and it's still not RFC compilant. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199705082020.NAA25464>