From owner-freebsd-hackers Sat Mar 28 08:13:20 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA05016 for freebsd-hackers-outgoing; Sat, 28 Mar 1998 08:13:20 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from bbs.mpcs.com (bbs.mpcs.com [204.215.226.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA04993 for ; Sat, 28 Mar 1998 08:13:13 -0800 (PST) (envelope-from hgoldste@bbs.mpcs.com) Received: (from hgoldste@localhost) by bbs.mpcs.com (8.8.8/8.8.7/MPCS spamzap) id LAA21072; Sat, 28 Mar 1998 11:13:13 -0500 Date: Sat, 28 Mar 1998 11:13:13 -0500 From: Howard Goldstein Message-Id: <199803281613.LAA21072@bbs.mpcs.com> To: freebsd-hackers@FreeBSD.ORG Cc: danj@3skel.com Subject: Re: Network throttle... In-Reply-To: <351D18B4.EBDE1C28@3skel.com> Reply-To: hgoldste@bbs.mpcs.com Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG danj wrote: : : I am looking for a way to create a lower bandwidth restriction on an : interface. I have an ethernet interface that I want to restrict to a : maximum : of T1 throughput. : : 1. Is there a way to do this (easy or kernel hacking) Easy, yes. ALTQ. See http://www.csl.sony.co.jp/person/kjc/programs.html : What happens, i.e. the mechanics, when there is a higher : capacity link feeding into a lower capacity link. Where does all : the data go? I know it is buffered to an extent, but that has limits. : Do the packets get dropped? Under ALTQ, after free space in the delay queue is exhausted, yes they are dropped. : I seem to remember an ICMP type that : indicates transmission of too much data and for the sender to cut back : or something. Not sure if source quenching is part of ALTQ... : Triskelion Systems, Inc. I wager 50 quatloos you'll like it... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message