From owner-freebsd-net@FreeBSD.ORG Mon Aug 29 14:18:13 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B88CD1065675 for ; Mon, 29 Aug 2011 14:18:13 +0000 (UTC) (envelope-from sthaug@nethelp.no) Received: from bizet.nethelp.no (bizet.nethelp.no [195.1.209.33]) by mx1.freebsd.org (Postfix) with SMTP id 0796C8FC1D for ; Mon, 29 Aug 2011 14:18:12 +0000 (UTC) Received: (qmail 38984 invoked from network); 29 Aug 2011 13:59:04 -0000 Received: from bizet.nethelp.no (HELO localhost) (195.1.209.33) by bizet.nethelp.no with SMTP; 29 Aug 2011 13:59:04 -0000 Date: Mon, 29 Aug 2011 15:59:04 +0200 (CEST) Message-Id: <20110829.155904.08325665.sthaug@nethelp.no> To: ivo.vachkov@gmail.com From: sthaug@nethelp.no In-Reply-To: References: X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-net@freebsd.org Subject: Re: Request for information/comment on default-free zone router properties X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Aug 2011 14:18:13 -0000 > Is there any (no need to be official) information what is the number > of different routes (for IPv4 and IPv6) on a default-free zone (DFZ) > router in the Internet? I vaguely remember the number 450 000+ > distinct routes for IPv4? But what about IPv6? See http://www.cidr-report.org - it has all the information you need. Extract from the weekly post to Nanog: Recent Table History Date Prefixes CIDR Agg 19-08-11 371450 219002 20-08-11 371427 219147 21-08-11 371547 219346 22-08-11 371326 218957 23-08-11 371090 219346 24-08-11 371769 219465 25-08-11 372189 219508 26-08-11 372363 219490 > On a related note, what is the number of the network interfaces on a > DFZ router? No need for exact number, educated guess/estimation would > be greatly appreciated too. How long is a piece of string? "It depends." And the same is the case for number of interfaces. You obviously need a minimum of three for a router to do anything "interesting" with the packets. Also, it depends on whether you're talking about physical interfaces or logical (sub) interfaces. I'd say anything from 3 to 20 is fairly typical. Steinar Haug, Nethelp consulting, sthaug@nethelp.no