From owner-freebsd-security Wed Sep 26 14:20:27 2001 Delivered-To: freebsd-security@freebsd.org Received: from ns1.infowest.com (ns1.infowest.com [204.17.177.10]) by hub.freebsd.org (Postfix) with ESMTP id 8C5AA37B438 for ; Wed, 26 Sep 2001 14:20:22 -0700 (PDT) Received: from there (eq.net [208.186.104.163]) by ns1.infowest.com (Postfix) with SMTP id D1F29215E6 for ; Wed, 26 Sep 2001 15:19:33 -0600 (MDT) Content-Type: text/plain; charset="iso-8859-1" From: Aaron D.Gifford To: freebsd-security@freebsd.org Subject: Re: Using ipfw pipes for bandwidth management - can it allow for "bursting"? Date: Wed, 26 Sep 2001 15:19:30 -0600 X-Mailer: KMail [version 1.3] Organization: InfoWest, Inc. MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Message-Id: <20010926211933.D1F29215E6@ns1.infowest.com> Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org RED is "Random Early Detection", an active queue management technique proposed by S. Floyd and V. Jacobson that can help alleviate certain types of problems associated with too much incoming traffic for a link (or in this case, a dummynet pipe). GRED is "Gentle Early Random Detection", a modification Floyd later proposed. An excellent article on Active Queue Management written by Kostas Pentikousis that includes some good stuff on RED can be found here: http://www.acm.org/crossroads/columns/connector/july2001.html Aaron out. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message