IETF Logo Mail Archive

Re: [sidr] WGLC: draft-ietf-sidr-bgpsec-reqs

Randy Bush <randy@psg.com> Tue, 08 November 2011 15:14 UTC

Return-Path: <randy@psg.com>
X-Original-To: sidr@ietfa.amsl.com
Delivered-To: sidr@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7225E21F8D0D for <sidr@ietfa.amsl.com>; Tue, 8 Nov 2011 07:14:53 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.476
X-Spam-Level:
X-Spam-Status: No, score=-2.476 tagged_above=-999 required=5 tests=[AWL=-0.104, BAYES_00=-2.599, SARE_SUB_OBFU_Q1=0.227]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id P78s2+HjSDM4 for <sidr@ietfa.amsl.com>; Tue, 8 Nov 2011 07:14:53 -0800 (PST)
Received: from ran.psg.com (ran.psg.com [IPv6:2001:418:1::36]) by ietfa.amsl.com (Postfix) with ESMTP id 28E3121F8D07 for <sidr@ietf.org>; Tue, 8 Nov 2011 07:14:53 -0800 (PST)
Received: from localhost ([127.0.0.1] helo=rair.psg.com.psg.com) by ran.psg.com with esmtp (Exim 4.76 (FreeBSD)) (envelope-from <randy@psg.com>) id 1RNnO0-0008GG-RC; Tue, 08 Nov 2011 15:14:53 +0000
Date: Tue, 08 Nov 2011 16:14:51 +0100
Message-ID: <m2k47ave6s.wl%randy@psg.com>
From: Randy Bush <randy@psg.com>
To: Russ White <russw@riw.us>
In-Reply-To: <m2lirqve98.wl%randy@psg.com>
References: <CAL9jLaa+L-C7+Gp54BpM8FjAj+EFMabwQB9SsPW0N4QnFEfVGw@mail.gmail.com> <4297E946-980B-43C5-A01F-1F49706BC51E@tcb.net> <p06240808cad5c4d268eb@193.0.26.186> <0364A2AA-0CCF-408A-B5CB-42D7AFCAFB36@tcb.net> <p06240804cad81a9e4485@193.0.26.186> <54CED243-BDDD-45B9-AC5C-C6A97692FBF2@verisign.com> <m2obwmvfog.wl%randy@psg.com> <4EB94363.2090809@riw.us> <m2lirqve98.wl%randy@psg.com>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/22.3 Mule/5.0 (SAKAKI)
MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka")
Content-Type: text/plain; charset="US-ASCII"
Cc: sidr@ietf.org
Subject: Re: [sidr] WGLC: draft-ietf-sidr-bgpsec-reqs
X-BeenThere: sidr@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Secure Interdomain Routing <sidr.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/sidr>, <mailto:sidr-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/sidr>
List-Post: <mailto:sidr@ietf.org>
List-Help: <mailto:sidr-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/sidr>, <mailto:sidr-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 08 Nov 2011 15:14:53 -0000

and, slide 11

So try believing minimum TTL in chain
But are all redundant to the first, since if that one expires none of the others should even be sent
An intermediate might want a lower one, in case its downstream link goes down, but why?
The downstream neighbor will announce a different path, but to those further still downstream that is indistinguishable from many other causes of seeing a different path from your upstream
And there's no real reason for an intermediate node to want to beacon because it has no skin in the game

v2.23.0 | Report a Bug | By Email