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Re: [Lsr] LSR WG Adoption Poll for "IS-IS Topology-Transparent Zone" - draft-chen-isis-ttz-11.txt

Huaimo Chen <huaimo.chen@futurewei.com> Tue, 01 September 2020 04:14 UTC

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From: Huaimo Chen <huaimo.chen@futurewei.com>
To: Henk Smit <henk.ietf@xs4all.nl>, "Acee Lindem (acee)" <acee=40cisco.com@dmarc.ietf.org>
CC: "lsr@ietf.org" <lsr@ietf.org>
Thread-Topic: [Lsr] LSR WG Adoption Poll for "IS-IS Topology-Transparent Zone" - draft-chen-isis-ttz-11.txt
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Date: Tue, 01 Sep 2020 04:14:06 +0000
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Subject: Re: [Lsr] LSR WG Adoption Poll for "IS-IS Topology-Transparent Zone" - draft-chen-isis-ttz-11.txt
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Hi Henk,

    It seems that IS-IS TTZ should not be complex. The prototype implementation of OSPF TTZ  seems simple and easy to operate. The complexity of IS-IS TTZ is similar to that of OSPF TTZ. In addition, we will try our best to reduce its complexity further.
    IS-IS TTZ is one of a few proposals/drafts which explore/experiment new ways for scalability.

Best Regards,
Huaimo
________________________________
From: Lsr <lsr-bounces@ietf.org> on behalf of Henk Smit <henk.ietf@xs4all.nl>
Sent: Wednesday, August 19, 2020 12:08 PM
To: Acee Lindem (acee) <acee=40cisco.com@dmarc.ietf.org>
Cc: lsr@ietf.org <lsr@ietf.org>
Subject: Re: [Lsr] LSR WG Adoption Poll for "IS-IS Topology-Transparent Zone" - draft-chen-isis-ttz-11.txt

I object the introduction of a new major concept, called "zone".
It adds nothing to solve problems we can not already solve.
It just adds unnecessary complexity and technical debt.

(12) In protocol design, perfection has been reached not when there
      is nothing left to add, but when there is nothing left to take
away.

henk.


Acee Lindem (acee) schreef op 2020-08-18 16:16:
> Based on the discussions in the last meeting and on the mailing list
> regarding draft-chen-isis-ttz-11, the chairs feel that there are
> enough differences with draft-ietf-lsr-isis-area-proxy-03 and in the
> community to consider advancing it independently on the experimental
> track.
>
> These differences include abstraction at arbitrary boundaries and
> IS-IS extensions for smooth transition to/from zone abstraction.
>
> We are now starting an LSR WG adoption call for
> draft-chen-isis-ttz-11.txt. Please indicate your support or objection
> to adoption prior to Tuesday, September 2nd, 2020.
>
> Thanks,
>
> Acee and Chris
> _______________________________________________
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