From owner-freebsd-isp@FreeBSD.ORG Thu Mar 15 08:31:49 2007 Return-Path: X-Original-To: freebsd-isp@freebsd.org Delivered-To: freebsd-isp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E480A16A401 for ; Thu, 15 Mar 2007 08:31:49 +0000 (UTC) (envelope-from nick@arc.net.my) Received: from mail.arc.net.my (nagano.arc.net.my [203.115.225.22]) by mx1.freebsd.org (Postfix) with ESMTP id 936BF13C458 for ; Thu, 15 Mar 2007 08:31:49 +0000 (UTC) (envelope-from nick@arc.net.my) Received: from yamaguchi.localdomain ([192.168.100.38]) by mail.arc.net.my (iPlanet Messaging Server 5.1 Patch 1 (built Jun 6 2002)) with ESMTP id <0JEX0097TOWYBB@mail.arc.net.my> for freebsd-isp@freebsd.org; Thu, 15 Mar 2007 15:31:46 +0800 (SGT) Received: from localhost (localhost [127.0.0.1]) by yamaguchi.localdomain (Postfix) with ESMTP id EFB69CBA5 for ; Thu, 15 Mar 2007 15:30:31 +0800 (MYT) Received: from yamaguchi.localdomain ([127.0.0.1]) by localhost (yamaguchi.arc.net.my [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id iQDOh8nI1PH2 for ; Thu, 15 Mar 2007 15:30:29 +0800 (MYT) Received: from mail.arc.net.my (av1.arc.net.my [192.168.100.36]) by yamaguchi.localdomain (Postfix) with ESMTP id 48716CAA2 for ; Thu, 15 Mar 2007 15:30:29 +0800 (MYT) Received: from [203.115.225.83] (tsukiji.arc.net.my [203.115.225.83]) by mail.arc.net.my (iPlanet Messaging Server 5.1 Patch 1 (built Jun 6 2002)) with ESMTP id <0JEX00AEWOWVEI@mail.arc.net.my> for freebsd-isp@freebsd.org; Thu, 15 Mar 2007 15:31:43 +0800 (SGT) Date: Thu, 15 Mar 2007 15:31:43 +0800 From: Nick Kraal To: freebsd-isp@freebsd.org Message-id: <45F8F65F.9080701@arc.net.my> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7BIT User-Agent: Thunderbird 1.5.0.10 (Windows/20070221) X-Virus-Scanned: amavisd-new at arc.net.my Subject: BGP annoucements/iBGP X-BeenThere: freebsd-isp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Internet Services Providers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 15 Mar 2007 08:31:50 -0000 Hello all, We have a set up simplified as this: Internet---[eBGP]---BR---[iBGP]---AR---[eBGP]---Cust_A On the AR, we are receiving 2 routing paths to the customer's prefix: [1] via Internet; 3 AS hops away [2] announced from directly connected customer to AR; prefix is prepended 7ASNs Now as I understand it AR will not announce the unattractive prepended prefix to the other local iBGP speakers in the network. And ultimately not announce this block to the Internet. Is there a way to circumvent this? The customer wants to 'see' us announce the prepended announcement (although we have told them it will be announced if the more attractive one is removed). Thanks in advance. -nick/