From owner-freebsd-questions Wed May 21 07:22:59 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id HAA12490 for questions-outgoing; Wed, 21 May 1997 07:22:59 -0700 (PDT) Received: from FNAL.FNAL.Gov (SYSTEM@fnal.fnal.gov [131.225.110.17]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id HAA12481 for ; Wed, 21 May 1997 07:22:56 -0700 (PDT) Received: from aduxb.fnal.gov ("port 55030"@aduxb.fnal.gov) by FNAL.FNAL.GOV (PMDF V5.0-5 #3998) id <01IJ4K8LBSAQ0007KQ@FNAL.FNAL.GOV>; Wed, 21 May 1997 09:22:29 -0600 Received: from localhost by aduxb.fnal.gov (5.x/SMI-SVR4) id AA20122; Wed, 21 May 1997 09:22:25 -0500 Date: Wed, 21 May 1997 09:22:24 -0500 (CDT) From: Richard Neswold Subject: Re: PPP Dialin, burst traffic In-reply-to: <3382E72C.583E@enta.net> To: Simon N Atkin Cc: freebsd-questions@FreeBSD.ORG Reply-to: neswold@FNAL.GOV Message-id: MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=US-ASCII Content-transfer-encoding: 7BIT Sender: owner-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Wed, 21 May 1997, Simon N Atkin wrote: > Hi, setup my freebsd bsd box at the weekend for dialin with PPP running > across it, > > It's much faster than using a router (obviously) But when downloading a > file from the server that the modem is connected to I only get burst > pulses of traffic. > > [snip] > > Just in case anyone doesn't understand burst pulse traffic, then it is > that the modem RX light doesn't stay on all the time while transfering , > i.e loss of bandwidth. I've used both SLIP and PPP under FreeBSD, OS/2, Linux, and Win95. I've *never* seen a continuous stream of data under any of these implementations. I always assumed it was due to TCP/IP handshaking and how loaded each machine is. If you're downloading off the Internet, you also have to worry about every machine that forwards your packets and the handshaking needed every step of the way. If I need to download a large file as quickly as possible, I'll dial in to my shell acount using 'minicom' and grab the file with ZMODEM. That's when I see continuous data being sent. Hope this helps... Rich ------------------------------------------------------------------------ Richard Neswold, Accelerator Div./Controls Dept | neswold@fnal.gov Fermilab, PO Box 500, MS 347, Batavia, IL 60510 | voice (630) 840-3454 'finger neswold@aduxb.fnal.gov' for PGP key | fax (630) 840-3093