From owner-freebsd-net@FreeBSD.ORG Fri Mar 26 12:25:55 2004 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C54D216A4CE for ; Fri, 26 Mar 2004 12:25:55 -0800 (PST) Received: from ganymede.hub.org (u46n208.hfx.eastlink.ca [24.222.46.208]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8ED8543D2F for ; Fri, 26 Mar 2004 12:25:55 -0800 (PST) (envelope-from scrappy@hub.org) Received: by ganymede.hub.org (Postfix, from userid 1000) id 7AC843AF28; Fri, 26 Mar 2004 16:25:55 -0400 (AST) Received: from localhost (localhost [127.0.0.1]) by ganymede.hub.org (Postfix) with ESMTP id 7281E3A17F; Fri, 26 Mar 2004 16:25:55 -0400 (AST) Date: Fri, 26 Mar 2004 16:25:55 -0400 (AST) From: "Marc G. Fournier" To: Bakul Shah In-Reply-To: <200403261908.i2QJ8lHA078562@gate.bitblocks.com> Message-ID: <20040326162515.F90406@ganymede.hub.org> References: <200403261908.i2QJ8lHA078562@gate.bitblocks.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-net@freebsd.org Subject: Re: Looking for switch recommendations ... X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Mar 2004 20:25:55 -0000 On Fri, 26 Mar 2004, Bakul Shah wrote: > For 100Mbps ports, the max packet rate in one direction is 10^8/672 == > 148809 pps (packets per sec) per port. So for 24 port full duplex ports > you get an aggregate maximum throughput of 148809*24*2 = 7738068 = > 7.14Mpps (Million pps). For a 48 port switch it is 14.29Mpps. so, the closer the Mpps gets to that 7.1Mpps, the better the switch overall? I take it that has to do with the CPU driving the switch itself, or is there other factors that help drive that # up? ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664