From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from korolev.univ-paris7.fr (korolev.univ-paris7.fr [IPv6:2001:660:3301:8000::1:2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by huchra.bufferbloat.net (Postfix) with ESMTPS id 69FC321F0B3 for ; Tue, 19 Mar 2013 13:28:41 -0700 (PDT) Received: from mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [81.194.30.253]) by korolev.univ-paris7.fr (8.14.4/8.14.4/relay1/38117) with ESMTP id r2JKSZrG011829; Tue, 19 Mar 2013 21:28:35 +0100 Received: from mailhub.math.univ-paris-diderot.fr (localhost [127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTP id 214C64A237; Tue, 19 Mar 2013 21:28:35 +0100 (CET) X-Virus-Scanned: amavisd-new at math.univ-paris-diderot.fr Received: from mailhub.math.univ-paris-diderot.fr ([127.0.0.1]) by mailhub.math.univ-paris-diderot.fr (mailhub.math.univ-paris-diderot.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GU83Fw1IRnoZ; Tue, 19 Mar 2013 21:28:30 +0100 (CET) Received: from lanthane.pps.univ-paris-diderot.fr (unknown [172.23.36.54]) (Authenticated sender: jch) by mailhub.math.univ-paris-diderot.fr (Postfix) with ESMTPSA id 0D0064A23A; Tue, 19 Mar 2013 21:28:29 +0100 (CET) Received: from localhost ([::1] helo=lanthane.pps.univ-paris-diderot.fr) by lanthane.pps.univ-paris-diderot.fr with esmtp (Exim 4.80) (envelope-from ) id 1UI393-0000PA-MM; Tue, 19 Mar 2013 21:28:29 +0100 Message-ID: <7ippyvgmmq.wl%jch@pps.univ-paris-diderot.fr> From: Juliusz Chroboczek To: Benjamin Henrion In-Reply-To: References: <87r4jjkvld.wl%jch@pps.univ-paris-diderot.fr> <20130313223423.7567EBF0037@mail2.tiolive.com> User-Agent: Wanderlust/2.15.9 MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (korolev.univ-paris7.fr [194.254.61.138]); Tue, 19 Mar 2013 21:28:35 +0100 (CET) X-Mailman-Approved-At: Tue, 09 Apr 2013 22:39:18 -0700 Cc: babel-users@lists.alioth.debian.org, cerowrt-devel@lists.bufferbloat.net Subject: Re: [Cerowrt-devel] [Babel-users] Lookingfor X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 19 Mar 2013 20:28:41 -0000 X-Original-Date: Tue, 19 Mar 2013 21:28:29 +0100 X-List-Received-Date: Tue, 19 Mar 2013 20:28:41 -0000 > You will have to change babeld to only consider a slice of the network. Manual aggregation can be done without changing anything. On a border router for the network 192.168.42.0/24, you say ip route add unreachable 192.168.42.0/24 proto static and in babeld.conf, out ip 192.168.42.0/24 ge 25 deny For reliability, you should also add some filtering rules to avoid leaking local routes into the other subnets. Automatic aggregation would be possible with just some minor changes to the implementation (not the protocol), but deaggregation would need to trigger a (user-configurable) hold time to avoid transient routing loops. (That's okay, though, deaggregation should never happen in a well-designed network -- if you cannot guarantee that your border routers are stable, you deserve the hold time.) -- Juliusz