Re: [Autoconf] Autoconf addressing model

"Dearlove, Christopher (UK)" <chris.dearlove@baesystems.com> Thu, 05 March 2009 13:09 UTC

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From: "Dearlove, Christopher (UK)" <chris.dearlove@baesystems.com>
To: "Teco Boot" <teco@inf-net.nl>, "Alexandru Petrescu" <alexandru.petrescu@gmail.com>
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Cc: autoconf@ietf.org, Thomas Heide Clausen <Thomas@ThomasClausen.org>
Subject: Re: [Autoconf] Autoconf addressing model
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> No problem either with configuring this on each and every interface of
a
> node. As long as the LL is unique on the link.
> So the following topology is valid:

> +----------+                        +----------+
> |          |fe80::1/64              |          |
> |          +========================+          |
> | router 1 |              fe80::2/64| router 2 |
> |          |fe80::1/64              |          |
> |          +========================+          |
> |          |              fe80::2/64|          |
> +----------+                        +----------+

> Agreed on this?

I'm withholding any judgement on that.

> Maybe the OLSR / NHDP design team needs to verify their design on this
> topology.

That is a problem for OLSR / NHDP which assumes (one or more)
distinct IP addresses on separate interfaces.

> Due to lack of a RouterID, topology databases may lack  sufficient
> information to distinguish the two links. When fixed, let's check also
the
> following:

> +----------+                        +----------+
> |          |fe80::1/64              |          |
> |          +========================+          |
> | router x |              fe80::2/64| router y |
> |          |fe80::2/64              |          |
> |          +========================+          |
> |          |              fe80::1/64|          |
> +----------+                        +----------+

That is not a problem.

-- 
Christopher Dearlove
Technology Leader, Communications Group
Networks, Security and Information Systems Department
BAE Systems Advanced Technology Centre
West Hanningfield Road, Great Baddow, Chelmsford, CM2 8HN, UK
Tel: +44 1245 242194  Fax: +44 1245 242124

BAE Systems (Operations) Limited
Registered Office: Warwick House, PO Box 87,
Farnborough Aerospace Centre, Farnborough, Hants, GU14 6YU, UK
Registered in England & Wales No: 1996687

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