Re: [Idr] BGP Auto-Discovery Protocol State Requirements
Jeffrey Haas <jhaas@pfrc.org> Fri, 19 March 2021 13:46 UTC
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Date: Fri, 19 Mar 2021 10:07:43 -0400
From: Jeffrey Haas <jhaas@pfrc.org>
To: Tony Przygienda <tonysietf@gmail.com>
Cc: "Acee Lindem (acee)" <acee=40cisco.com@dmarc.ietf.org>, "idr@ietf.org" <idr@ietf.org>
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Subject: Re: [Idr] BGP Auto-Discovery Protocol State Requirements
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On Fri, Mar 19, 2021 at 02:36:08PM +0100, Tony Przygienda wrote: > agreed roughly. I don't have any particular likes or dislikes but observe > that until you get an agreement on whether you use the Occam's razor of > "only and only what gets TCP connected" or not amongst yourself you will > not have an easy time to reach agreement on a specific design Hence the dt document. We have 2 (now 2.5) possible solutions to the state problem. The proposals analyzed use both of them in different flavors. The authors of a proposal should be able to justify why they put the state they did into them. The dt document says "this is a problem to be solved". The WG gets to pick what solution it likes. > the mtu observation about packets going over different transport than TCP > session is pretty good. On IGPs the padding is bit of a kludge (but in a > sense a good kludge since it checks the "reality" of packets passing), I > would venture that including MTU & other parameters description in the > packet to make sure both sides have acceptable things and with 3-way also > see each other and don't shout two-way only is a better design. BFD for large packets[1] leverages similar tricks and is intended to be used as a service. But much like the observations karp made about crypto, running even a generic service is problematic based on your bootstrapping considerations. An IGP with MTU detection can protect BGP... if BGP uses an IGP. BFD can protect multiple services... if BFD gets to come up first - but that may depend on routing. Etc. -- Jeff [1] https://tools.ietf.org/html/draft-ietf-bfd-large-packets
- [Idr] BGP Auto-Discovery Protocol State Requireme… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Tony Przygienda
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Acee Lindem (acee)
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Tony Przygienda
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Tony Przygienda
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Fomin, Sergey (Nokia - US/Mountain View)
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Robert Raszuk
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… heasley
- Re: [Idr] BGP Auto-Discovery Protocol State Requi… Jeffrey Haas