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Re: [lisp] [Ila] LISP for ILA

Dino Farinacci <farinacci@gmail.com> Tue, 06 March 2018 01:00 UTC

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From: Dino Farinacci <farinacci@gmail.com>
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Date: Mon, 05 Mar 2018 17:00:03 -0800
Cc: "Alberto Rodriguez Natal (natal)" <natal@cisco.com>, Fabio Maino <fmaino@cisco.com>, "ila@ietf.org" <ila@ietf.org>, "lisp@ietf.org" <lisp@ietf.org>, Albert Cabellos <acabello@ac.upc.edu>, "Vina Ermagan (vermagan)" <vermagan@cisco.com>
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To: Tom Herbert <tom@quantonium.net>
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Subject: Re: [lisp] [Ila] LISP for ILA
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> Looking at the map-reply message format, I am concerned about its
> size. By my count, it's 40 bytes to provide one record with one
> locator where record and locator are 8 bytes. If we need to scale a
> system to billions of nodes this overhead could be an issue even if
> it's the control plane. Is there any plan to have a compressed version
> of this. For instance ,if there is only one RLOC returned wouldn't the
> priorities and weights be useless?

My comment about this spec is that you really don’t need a LCAF format to format the addresses. You can use AFI=2 and use IPv6 format. That will reduce the size.

But if you start compressing out fields, reality will set in and new features will be added and you’ll be back where we started. You want to multi-home, don’t you?

Dino

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