Re: Why do we need to go with 128 bits address space ?
Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> Wed, 21 August 2019 20:59 UTC
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Subject: Re: Why do we need to go with 128 bits address space ?
To: Robert Raszuk <robert@raszuk.net>
Cc: "ietf@ietf.org" <ietf@ietf.org>, "irtf-discuss@irtf.org" <irtf-discuss@irtf.org>, "6man@ietf.org" <6man@ietf.org>
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From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
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Date: Thu, 22 Aug 2019 05:59:43 +0900
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Robert Raszuk wrote: >> IGP metric is used as route preference, > > And that's the issue. Neither IGP metric nor BGP path attributes today > reflect reality of true network paths. I'm afraid you are not familiar with BGP policy, where you don't have to blindly rely on path attributes. > When I look at my BGP table in NY I get path to Europe via Seattle just > because such path has 1 AS less in the AS-PATH and neglect the fact that > there is alternative path just next to it with +1 AS but shorter RTT of 150 > ms. That you configure your BGP poorly does not mean others can't have better policy to favor the alternative path. As is written in the draft: Note that end to end multihoming works with the separation between inter domain BGP and intra domain routing protocols, if BGP routers, based on domain policy, assign external routes preference values (metric) of intra domain routing protocols. proper IGP metric may be given by proper policy based on such knowledge (not carried by BGP) as "with +1 AS but shorter RTT of 150ms". Masataka Ohta
- Why do we need to go with 128 bits address space ? shyam bandyopadhyay
- Re: Why do we need to go with 128 bits address sp… Mark Smith
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: [irtf-discuss] Why do we need to go with 128 … Brian Carpenter
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: Why do we need to go with 128 bits address sp… Sam Kerner
- Re: [irtf-discuss] Why do we need to go with 128 … Lixia Zhang
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Allman
- Re: Why do we need to go with 128 bits address sp… Nico Williams
- Re: [irtf-discuss] Why do we need to go with 128 … Fernando Gont
- Re: [irtf-discuss] Why do we need to go with 128 … Tom Herbert
- RE: [irtf-discuss] Why do we need to go with 128 … Chengli (Cheng Li)
- Re: Why do we need to go with 128 bits address sp… Carsten Bormann
- Re: [irtf-discuss] Why do we need to go with 128 … Roland Bless
- Re: [irtf-discuss] Why do we need to go with 128 … Fernando Gont
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Smith
- Re: Why do we need to go with 128 bits address sp… Musa Stephen Honlue
- Re: Why do we need to go with 128 bits address sp… Behcet Sarikaya
- Re: [irtf-discuss] Why do we need to go with 128 … Phillip Hallam-Baker
- Re: [irtf-discuss] Why do we need to go with 128 … Masataka Ohta
- Re: [irtf-discuss] Why do we need to go with 128 … Mark Smith
- Re: [irtf-discuss] Why do we need to go with 128 … Michael
- Re: [irtf-discuss] Why do we need to go with 128 … Phillip Hallam-Baker
- RE: Why do we need to go with 128 bits address sp… Pengshuping (Peng Shuping)
- Re: Why do we need to go with 128 bits address sp… John Levine
- Re: Why do we need to go with 128 bits address sp… Fernando Gont
- Re: Why do we need to go with 128 bits address sp… Alexandre Petrescu
- Re: Why do we need to go with 128 bits address sp… Simon Hobson
- Re: Why do we need to go with 128 bits address sp… Sander Steffann
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Fred Baker
- Re: [irtf-discuss] Why do we need to go with 128 … John Wroclawski
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Fred Baker
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta
- Re: Why do we need to go with 128 bits address sp… Robert Raszuk
- Re: Why do we need to go with 128 bits address sp… Masataka Ohta