Re: Why MinRouteAdverInterval is recommended 30
Jeffrey Haas <jhaas@nexthop.com> Fri, 01 November 2002 15:27 UTC
Received: from trapdoor.merit.edu (ietf-mx.ietf.org [132.151.6.1]) by ietf.org (8.9.1a/8.9.1a) with ESMTP id KAA16319 for <idr-archive@ietf.org>; Fri, 1 Nov 2002 10:27:35 -0500 (EST)
Received: by trapdoor.merit.edu (Postfix) id B56DD912C2; Fri, 1 Nov 2002 10:29:50 -0500 (EST)
Delivered-To: idr-outgoing@trapdoor.merit.edu
Received: by trapdoor.merit.edu (Postfix, from userid 56) id 86D14912C3; Fri, 1 Nov 2002 10:29:50 -0500 (EST)
Delivered-To: idr@trapdoor.merit.edu
Received: from segue.merit.edu (segue.merit.edu [198.108.1.41]) by trapdoor.merit.edu (Postfix) with ESMTP id 6CE40912C2 for <idr@trapdoor.merit.edu>; Fri, 1 Nov 2002 10:29:49 -0500 (EST)
Received: by segue.merit.edu (Postfix) id 55D5C5DF71; Fri, 1 Nov 2002 10:29:49 -0500 (EST)
Delivered-To: idr@merit.edu
Received: from presque.djinesys.com (dns.nexthop.com [64.211.218.216]) by segue.merit.edu (Postfix) with ESMTP id 9CED05DE4F for <idr@merit.edu>; Fri, 1 Nov 2002 10:29:48 -0500 (EST)
Received: (from root@localhost) by presque.djinesys.com (8.11.3/8.11.1) id gA1FTYL74694; Fri, 1 Nov 2002 10:29:34 -0500 (EST) (envelope-from jhaas@jhaas.nexthop.com)
Received: from jhaas.nexthop.com (jhaas.nexthop.com [64.211.218.31]) by presque.djinesys.com (8.11.3/8.11.1) with ESMTP id gA1FTVC74687; Fri, 1 Nov 2002 10:29:31 -0500 (EST) (envelope-from jhaas@jhaas.nexthop.com)
Received: (from jhaas@localhost) by jhaas.nexthop.com (8.11.3nb1/8.11.3) id gA1FTVg13516; Fri, 1 Nov 2002 10:29:31 -0500 (EST)
Date: Fri, 01 Nov 2002 10:29:30 -0500
From: Jeffrey Haas <jhaas@nexthop.com>
To: Qiu Jian <qiu@ns.6test.edu.cn>
Cc: "idr@merit.edu" <idr@merit.edu>
Subject: Re: Why MinRouteAdverInterval is recommended 30
Message-ID: <20021101102930.B13231@nexthop.com>
References: <20021101073553.4856E5DE1A@segue.merit.edu>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
In-Reply-To: <20021101073553.4856E5DE1A@segue.merit.edu>; from qiu@ns.6test.edu.cn on Fri, Nov 01, 2002 at 03:37:42PM +0800
X-Virus-Scanned: by AMaViS perl-11
Sender: owner-idr@merit.edu
Precedence: bulk
On Fri, Nov 01, 2002 at 03:37:42PM +0800, Qiu Jian wrote: > Is it right to say that the Maximal Propagation > Delay in Internet is almost less than 30 seconds, This is a matter of some debate. > so MinRouteAdverInterval is set to 30 seconds to > guarantte the furthest route change can be caught > before sending the relevant update? Theoretically, this means that if a route is still reachable (feasible), then you will delay sending changes to the route. This will cause the entire routing system (in this case, possibly the Internet) to have potential for blackholes and forwarding loops due to these timers for some period of time. The following paper goes into some details on this: http://www.acm.org/sigcomm/sigcomm2000/conf/paper/sigcomm2000-5-2.pdf -- Jeff Haas NextHop Technologies