Re: [Lsr] New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt

Speaking as WG member: 

I agree. The whole Data Center IGP flooding discussion went on years ago and the simplistic enhancement proposed in the subject draft is neither relevant or useful now.

Thanks,
Acee

> On Nov 24, 2023, at 11:55 PM, Les Ginsberg (ginsberg) <ginsberg=40cisco.com@dmarc.ietf.org> wrote:
> 
> Xiaohu –
>  I also point out that there are at least two existing drafts which specifically address IS-IS flooding reduction in CLOS networks and do so in greater detail and with more robustness than what is in your draft:
>  https://datatracker.ietf.org/doc/draft-ietf-lsr-distoptflood/
>  https://datatracker.ietf.org/doc/draft-ietf-lsr-isis-spine-leaf-ext/
>  I do not see a need for yet another draft specifically aimed at CLOS networks.
>  Note that work on draft-ietf-lsr-isis-spine-leaf-ext was suspended due to lack of interest in deploying an IGP solution in CLOS networks.
> You are suggesting in draft-xu-lsr-fare that AI is going to change this. Well, maybe, but if so I think we should return to the solutions already available and prioritize work on them.
>     Les
>   From: Lsr <lsr-bounces@ietf.org> On Behalf Of Tony Li
> Sent: Thursday, November 23, 2023 8:39 AM
> To: xuxiaohu_ietf@hotmail.com
> Cc: lsr@ietf.org
> Subject: Re: [Lsr] New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt
>  Hi,
>  What you’re proposing is already described in IS-IS Mesh Groups (https://www.rfc-editor.org/rfc/rfc2973.html) and improved upon in Dynamic Flooding (https://datatracker.ietf.org/doc/html/draft-ietf-lsr-dynamic-flooding).
>  Regards,
> Tony
>  
> 
> On Nov 23, 2023, at 8:29 AM, xuxiaohu_ietf@hotmail.com wrote:
>  Hi all,
>  Any comments or suggestions are welcome.
>  Best regards,
> Xiaohu
>  发件人: internet-drafts@ietf.org <internet-drafts@ietf.org>
> 日期: 星期三, 2023年11月22日 11:37
> 收件人: Xiaohu Xu <xuxiaohu_ietf@hotmail.com>
> 主题: New Version Notification for draft-xu-lsr-flooding-reduction-in-clos-01.txt
> A new version of Internet-Draft draft-xu-lsr-flooding-reduction-in-clos-01.txt
> has been successfully submitted by Xiaohu Xu and posted to the
> IETF repository.
> 
> Name:     draft-xu-lsr-flooding-reduction-in-clos
> Revision: 01
> Title:    Flooding Reduction in CLOS Networks
> Date:     2023-11-22
> Group:    Individual Submission
> Pages:    6
> URL:      https://www.ietf.org/archive/id/draft-xu-lsr-flooding-reduction-in-clos-01.txt
> Status:   https://datatracker.ietf.org/doc/draft-xu-lsr-flooding-reduction-in-clos/
> HTMLized: https://datatracker.ietf.org/doc/html/draft-xu-lsr-flooding-reduction-in-clos
> Diff:     https://author-tools.ietf.org/iddiff?url2=draft-xu-lsr-flooding-reduction-in-clos-01
> 
> Abstract:
> 
>    In a CLOS topology, an OSPF (or ISIS) router may receive identical
>    copies of an LSA (or LSP) from multiple OSPF (or ISIS) neighbors.
>    Moreover, two OSPF (or ISIS) neighbors may exchange the same LSA (or
>    LSP) simultaneously.  This results in unnecessary flooding of link-
>    state information, which wastes the precious resources of OSPF (or
>    ISIS) routers.  Therefore, this document proposes extensions to OSPF
>    (or ISIS) to reduce this flooding within CLOS networks.  The
>    reduction of OSPF (or ISIS) flooding is highly beneficial for
>    improving the scalability of CLOS networks.
> 
> 
> 
> The IETF Secretariat
> 
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