[Lsr] Area Abstraction -> Area Proxy

tony.li@tony.li Thu, 03 October 2019 23:21 UTC

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Subject: [Lsr] Area Abstraction -> Area Proxy
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Hi all,

We’ve posted a new draft today for your consideration.

This was “Area Abstraction”. We’re renaming it to “Area Proxy”.  The intent is the same.

We’ve thrown away all need for tunneling.  To do this, we’ve raised the requirement that the area be level-1-2. This seems simpler.

We’ve added a router capability to indicate that a router is ready for this function to be enabled.

We’ve fleshed out a few more details.

As always, your constructive comments are most welcome.

Sarah & Tony

> Begin forwarded message:
> From: internet-drafts@ietf.org
> Subject: New Version Notification for draft-li-lsr-isis-area-proxy-00.txt
> Date: October 3, 2019 at 4:11:26 PM PDT
> To: "Yunxia Chen" <sarahchen@arista.com>;, "Sarah Chen" <sarahchen@arista.com>;, "Tony Li" <tony.li@tony.li>;
> A new version of I-D, draft-li-lsr-isis-area-proxy-00.txt
> has been successfully submitted by Tony Li and posted to the
> IETF repository.
> Name:		draft-li-lsr-isis-area-proxy
> Revision:	00
> Title:		Area Proxy for IS-IS
> Document date:	2019-10-03
> Group:		Individual Submission
> Pages:		11
> URL:            https://www.ietf.org/internet-drafts/draft-li-lsr-isis-area-proxy-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-li-lsr-isis-area-proxy/
> Htmlized:       https://tools.ietf.org/html/draft-li-lsr-isis-area-proxy-00
> Htmlized:       https://datatracker.ietf.org/doc/html/draft-li-lsr-isis-area-proxy
> Abstract:
>   Link state routing protocols have hierarchical abstraction already
>   built into them.  However, when lower levels are used for transit,
>   they must expose their internal topologies to each other, leading to
>   scale issues.
>   To avoid this, this document discusses extensions to the IS-IS
>   routing protocol that would allow level 1 areas to provide transit,
>   yet only inject an abstraction of the level 1 topology into level 2.
>   Each level 1 area is represented as a single level 2 node, thereby
>   enabling greater scale.
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> The IETF Secretariat