Supports for the adoption of two drafts at the same time, IGP Reduce Flooding 
still have some problem needs to be solved, for example, how to ensure the 
reliability of Flooding in a multi-point failure scenario. The way to solve 
these problems in a distributed and centralized manner may be different. 
Therefore, it is recommended to promote separately and continue to conduct 
research in their respective directions.

Ths

Zhibo

-----Original Message-----
From: Lsr [mailto:lsr-boun...@ietf.org] On Behalf Of Aijun Wang
Sent: Thursday, February 14, 2019 10:38 AM
To: 'Christian Hopps' <cho...@chopps.org>; lsr@ietf.org
Cc: lsr-cha...@ietf.org; lsr-...@ietf.org
Subject: [Lsr] 答复: WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR 
poll.

Hi, Christian:

Supports for the adoption of two drafts at the same time, in which
one(draft-li-lsr-dynamic-flooding-02) focuses on the centralized mode and the 
other(draft-cc-lsr-flooding-reduction-01) focuses on the distributed mode.

The centralized mode for is one straightforward way to realize the flooding 
reduction, and I admire Tony Li give his solution first. But from the 
consideration of solution robustness, the distributed mode may be more 
promising.
My consideration for distributed mode is that it should not cover only the 
algorithm, more contents need to be standardized in future. Huaimo has one good 
start point for distributed mode, and he also gives abundant thoughts for the 
centralized mode that the current version of
draft-li-lsr-dynamic-flooding-02 has not covered yet.

Proposal for the name of two drafts may be 
draft-ietf-lsr-flooding-reduction-centralized-mode and 
draft-ietf-lsr-flooding-reduction-distributed-mode.


Best Regards.

Aijun Wang
Network R&D and Operation Support Department China Telecom Corporation Limited 
Beijing Research Institute,Beijing, China.

-----邮件原件-----
发件人: Christian Hopps [mailto:cho...@chopps.org]
发送时间: 2019年2月11日 18:45
收件人: lsr@ietf.org
抄送: lsr-cha...@ietf.org; lsr-...@ietf.org; cho...@chopps.org
主题: [Lsr] WG Adoption Call for draft-li-lsr-dynamic-flooding-02 + IPR poll.


Hi Folks,

We are starting a 2 week adoption call on draft-li-lsr-dynamic-flooding-02.

The aim of this document is to describe the problem space and standardize a
way to signal dynamic flooding information. It does not standardize any
specific algorithm for flooding topology creation.

Authors please respond indicating if you are aware of any IPR related to
this work.

We also have another draft (draft-cc-lsr-flooding-reduction-01) that started
as a distributed flooding topology algorithm and morphed into that plus
competing ideas on signaling of flooding topology information. The intent
after adoption of draft-li-lsr-dynamic-flooding-02 is two-fold. One, the WG
can discuss adding any signaling ideas from this work to the adopted
signaling draft (with proper attribution given as appropriate), and two, for
the authors of draft-cc-lsr-flooding-reduction-01 to publish a new document
without the signaling portion and instead focus on their flooding topology
algorithm. This new focused document can be considered in parallel along
with the other algorithm work that has been proposed.

Flooding topology creation is seen as a hard problem for which we don't
expect a one-size-fits-all solution. Taking the steps outlined above will
help us move forward on the solutions.

Thanks,
Chris & Acee.
LSR WG Chairs.

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