From owner-Big-Internet@munnari.OZ.AU Thu May 1 02:16:50 1997 Return-Path: Received: from murtoa.cs.mu.OZ.AU by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id QA27125; Thu, 1 May 1997 02:16:50 +1000 (from owner-Big-Internet@munnari.OZ.AU) Received: from mailing-list by murtoa.cs.mu.OZ.AU (8.6.9/1.0) id CAA16012; Thu, 1 May 1997 02:16:24 +1000 Received: from munnari.OZ.AU by murtoa.cs.mu.OZ.AU (8.6.9/1.0) with SMTP id BAA15995; Thu, 1 May 1997 01:58:31 +1000 Received: from bells.cs.ucl.ac.uk by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id PA16046; Thu, 1 May 1997 01:58:25 +1000 (from J.Crowcroft@cs.ucl.ac.uk) Received: from waffle.cs.ucl.ac.uk by bells.cs.ucl.ac.uk with local SMTP id ; Wed, 30 Apr 1997 16:53:33 +0100 To: Tim Bass Cc: jnc@ginger.lcs.mit.edu (Noel Chiappa), tli@jnx.com, RADIA_PERLMAN@novell.com, big-internet@munnari.OZ.AU Subject: Re: Autonomous System Sanity Protocol In-Reply-To: Your message of "Wed, 30 Apr 1997 09:52:04 EDT." <199704301352.JAA24174@linux.silkroad.com> Date: Wed, 30 Apr 1997 16:53:30 +0100 Message-Id: <2411.862415610@cs.ucl.ac.uk> From: Jon Crowcroft Precedence: bulk >Just a suggestion, Noel. The world would greatly benefit by a very >detailed technical book written by you (and others) . i have been trying to get some of the smart people in next generation traffic management (intserv/ion/qosr etc etC) to write down what could be done in signaling, QoS routing, CAC, shaping, policing, service classes....admission tests for each, utilisation for cell and packet based approximations to GPS, etc etc etc..... several publishers would give a nice advance for such a book..... but it'd have to be out fairly soon......and be written by someone with good style (rich stevens is an examplar, imho) >that completely documents your knowledge base. IMHO., you could move on >to the 'next level' of the issue; and the 'world' would have a chance >to catch up. Then your 'head banging' could be transformed >into 'key banging'..... explaining to the more pedestrian engineers >the nuts and bolts of your intellect. >My guess is (apologies for the tacit barb) ... if Einstein could >convince the world the value of relativity physics, then is it >possible to move beyond 'banging heads' on scalable routing >on a global scale. :-) jon From owner-Big-Internet@munnari.OZ.AU Fri May 2 04:57:36 1997 Return-Path: Received: from murtoa.cs.mu.OZ.AU by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id SA07585; Fri, 2 May 1997 04:57:36 +1000 (from owner-Big-Internet@munnari.OZ.AU) Received: from mailing-list by murtoa.cs.mu.OZ.AU (8.6.9/1.0) id EAA17554; Fri, 2 May 1997 04:56:53 +1000 Received: from munnari.OZ.AU by murtoa.cs.mu.OZ.AU (8.6.9/1.0) with SMTP id EAA17526; Fri, 2 May 1997 04:38:01 +1000 Received: from lintjr.cisco.com by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id SA07260; Fri, 2 May 1997 04:38:00 +1000 (from mlodge@cisco.com) Received: from mlodge-pc.cisco.com (dhcp-c2-193.cisco.com [171.68.228.193]) by lintjr.cisco.com (8.8.5/CISCO.SERVER.1.2) with SMTP id LAA08680 for ; Thu, 1 May 1997 11:37:43 -0700 (PDT) Message-Id: <3.0.1.32.19970501113717.006cdec0@lintjr.cisco.com> X-Sender: mlodge@lintjr.cisco.com X-Mailer: Windows Eudora Pro Version 3.0.1 (32) Date: Thu, 01 May 1997 11:37:17 -0700 To: big-internet@munnari.OZ.AU From: Mathew Lodge Subject: Re: PKS, and the DV/MD choice... Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Precedence: bulk Christian Huitema wrote: >So, we want secure connectivity information, saying essentially that "net >X is connected to AS Y". One option is to modify BGP-6 to carry >certificates. But this is overkill -- the connectivity information is >static, about as static as address assignment. Why not just place it in >the DNS ? The inverse domains can be secured by DNS sec, with delegation >traceable all the way up to the IANA. We could easily place an AS record >in that hierarchy, e.g. "*.18.in-addr.arpa AS IN 12345". That would allow >instant checks by just looking in the DNS, and a path to escalation in >paranoia land for the security conscious. This would be fine but for the fact that changes to DNS delegations are not authenticated themselves. As an example, when working for my previous employer, the tier-1 ISP providing one of our Internet links told the InterNIC that it ran primary DNS for our domains. Needless to say, it did not, but no-one bothered to check. The lack of information in this ISP's DNS files about our hosts and networks effectively "removed" us from the Internet for several days, until the correct DNS information was propagated back out into the Internet. So, even if you have delegation traceable back to IANA... who's to say that the correct delegators are members of the chain? The tier-1 ISP could have signed its DNS information, which would have made it authenticated as far as DNS sec is concerned -- but it still would have been bogus info. Mathew | Mathew Lodge, Product Manager, Cisco Systems | | mlodge@cisco.com; Phone: +1 408 527 4908 | | Fax: +1 408 527 2383 | From owner-Big-Internet@munnari.OZ.AU Wed May 7 08:41:00 1997 Return-Path: Received: from murtoa.cs.mu.OZ.AU by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id WA29979; Wed, 7 May 1997 08:41:00 +1000 (from owner-Big-Internet@munnari.OZ.AU) Received: from mailing-list by murtoa.cs.mu.OZ.AU (8.6.9/1.0) id IAA23949; Wed, 7 May 1997 08:40:09 +1000 Received: from munnari.OZ.AU by murtoa.cs.mu.OZ.AU (8.6.9/1.0) with SMTP id IAA23932; Wed, 7 May 1997 08:35:29 +1000 Received: from fnal.fnal.gov by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id WA23806; Wed, 7 May 1997 08:35:27 +1000 (from crawdad@gungnir.fnal.gov) Received: from gungnir.fnal.gov ("port 39281"@gungnir.fnal.gov) by FNAL.FNAL.GOV (PMDF V5.0-5 #3998) id <01IIK32JO4LE0015FJ@FNAL.FNAL.GOV>; Tue, 06 May 1997 17:35:24 -0600 Received: from gungnir.fnal.gov by gungnir.fnal.gov (SMI-8.6/SMI-SVR4) id RAA22685; Tue, 06 May 1997 17:33:57 -0500 Date: Tue, 06 May 1997 17:33:57 -0500 From: Matt Crawford Subject: Re: PKS, and the DV/MD choice... In-Reply-To: "28 Apr 1997 10:43:30 EDT." <"9704281443.AA29183"@ginger.lcs.mit.edu> Sender: crawdad@gungnir.fnal.gov To: jnc@ginger.lcs.mit.edu (Noel Chiappa) Cc: big-internet@munnari.OZ.AU Message-Id: <199705062233.RAA22685@gungnir.fnal.gov> Content-Transfer-Encoding: 7BIT X-Face: /RKQi"kntyd}7l)d8n%'Dum<~(aMW3,5g&'NiH5I4Jj|wT:j;Qa$!@A<~/*C:{:MmAQ:o%S /KKi}G4_.||4I[9!{%3]Hd"a*E{ In an MD system, you should only get updates from R1 when the > topology next to R1 changes (i.e. it's connect to some other router, or a > piece of the nework, changes), and each topology change is *guaranteed* to > send you only a small amount of data (i.e. what R1 is connected to now). I.e. > you don't get all of whatever routing table entries have changed - which > could be a lot of data items, each one of which would have to be checked, Now you have a large signed item describing old state and a small signed item describing changes. Either 1) You can propagate the former and suppress the latter or 2) All data expires and is often being re-sent and re-checked or 3) The source of the data is somehow able to propagate the data past you by some means with which you can't interfere. I don't believe (3). (2) either loses big or sets a bound on routing convergence time. (1) isn't a fix, just a partial fix and probably a net waste of effort. It seems to me that the time to check N bytes of data is AN+B, where A is the inverse-speed of your hashing function and B is the time to do a public-key computation. Certain ranges of a and b favor sending only complete topology information (or at least, complete at a given level of abstraction) rather than incremental updates. Matt Crawford From owner-Big-Internet@munnari.OZ.AU Sun May 18 02:26:43 1997 Return-Path: Received: from murtoa.cs.mu.OZ.AU by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id QA26823; Sun, 18 May 1997 02:26:43 +1000 (from owner-Big-Internet@munnari.OZ.AU) Received: from mailing-list by murtoa.cs.mu.OZ.AU (8.6.9/1.0) id CAA07231; Sun, 18 May 1997 02:24:48 +1000 Received: from munnari.OZ.AU by murtoa.cs.mu.OZ.AU (8.6.9/1.0) with SMTP id CAA07222; Sun, 18 May 1997 02:22:07 +1000 Received: from mail.cwo.com by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id QA28939; Sun, 18 May 1997 02:22:05 +1000 (from authors@cwo.com) Received: from pm19.cwo.com (pm19.cwo.com [207.49.29.29]) by mail.cwo.com (8.8.5/) with SMTP id JAA17157 for ; Sat, 17 May 1997 09:23:08 -0700 Received: by pm19.cwo.com with Microsoft Mail id <01BC62A4.A1AD9EC0@pm19.cwo.com>; Sat, 17 May 1997 09:28:08 -0700 Message-Id: <01BC62A4.A1AD9EC0@pm19.cwo.com> From: JA To: "'big-internet@munnari.OZ.AU'" Subject: News Date: Sat, 17 May 1997 08:49:53 -0700 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Precedence: bulk !! 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Box 41408, Sacramento, CA 95841 - USA Phone: (916) 427 6635 Mo.- Fr. 8am - 5pm PST e.-mail: authors@cwo.com (c) Sieglinde Alexander 1997 all rights reserved For information before June 1st, call: 916 392 5447 From owner-Big-Internet@munnari.OZ.AU Wed May 28 06:39:38 1997 Return-Path: Received: from murtoa.cs.mu.OZ.AU by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id UA00379; Wed, 28 May 1997 06:39:38 +1000 (from owner-Big-Internet@munnari.OZ.AU) Received: from mailing-list by murtoa.cs.mu.OZ.AU (8.6.9/1.0) id GAA03900; Wed, 28 May 1997 06:37:32 +1000 Received: from munnari.OZ.AU by murtoa.cs.mu.OZ.AU (8.6.9/1.0) with SMTP id GAA03882; Wed, 28 May 1997 06:24:15 +1000 Received: from gomez.cs.pitt.edu by munnari.OZ.AU with SMTP (5.83--+1.3.1+0.56) id UA00732; Wed, 28 May 1997 06:24:11 +1000 (from znati@cs.pitt.edu) Received: from zeus.cs.pitt.edu (zeus.cs.pitt.edu [136.142.79.56]) by gomez.cs.pitt.edu (8.8.3/8.8.3) with ESMTP id QAA09663 for ; Tue, 27 May 1997 16:24:09 -0400 (EDT) From: Taieb Znati Received: (from znati@localhost) by zeus.cs.pitt.edu (8.8.3/8.8.3) id QAA07555 for big-internet@munnari.OZ.AU; Tue, 27 May 1997 16:24:02 -0400 (EDT) Message-Id: <199705272024.QAA07555@zeus.cs.pitt.edu> Subject: DMS97 Call For Participation To: big-internet@munnari.OZ.AU (Potential Authors 10) Date: Tue, 27 May 1997 16:24:01 -0400 (EDT) X-Mailer: ELM [version 2.4 PL25] Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk =--=--=--=--=--=--=--= =--=--=--=--=--=--=--= Call For Participation Call For Participation =--=--=--=--=--=--=--= =--=--=--=--=--=--=--= DMS'97 1997 Pacific Workshop on Distributed Multimedia Systems http://www.ksi.edu/seke/dms97pgm.html =--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--= July 24-25, 1997 University of British Columbia, Vancouver, Canada =--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--= DMS'97 is a premier forum where academic researchers, system developers and practicing engineers from around the world exchange ideas and discuss current activities in the field of multimedia systems and technology. Highlights of the Program =--=--=--=--=--=--=--=--= * Tutorials and Short Courses * Invited Talks * Technical Sessions * Banquet * Cruise/Dinner For full program information consult the following URL: ______ http://www.cs.pitt.edu/DMS97 _________