Re: Soliciting WG feedback and comments on draft-zxd-rtgwg-ordered-metric-adjustment-00

Stephane, 

Much progress on the topic has been made since that much preliminary Infocom paper. 
So here come more up-to-date reference points to compare:

Graceful Convergence in Link-State IP Networks
F. Clad, P. Mérindol, J.-J. Pansiot, P. Francois and O. Bonaventure 
In IEEE/ACM Transactions on Networking, 2013

documents the most optimised algorithm known so far for the link shutdown case, with extensive simulation results and performance analysis. 

Graceful Router Updates for Link-State Protocols
F. Clad, P. Mérindol, S. Vissicchio, J.-J. Pansiot and P. Francois
In proceedings of IEEE ICNP 2013, Göttingen, Germany, October 2013

provides an algorithm to do the same in the node shutdown case, smarter than doing one link after the other. 

Cheers,

Pierre.

On Oct 23, 2013, at 2:01 PM, stephane.litkowski@orange.com wrote:

> Hi,
> 
> I would need more time to review your algo part. But anyway, could you explain the difference with some old public approach like the paper from Pierre, Mike and Olivier :  http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.67.8263&rep=rep1&type=pdf
> 
> Moreover I would be interested to see in your draft some simulation proving the metric list is quite low ...
> I can remember in the paper I'm referencing that the challenge was to compress the KMS list in order to prevent a very very long list which would not be applicable in a live network.
> 
> Thanks
> 
> Stephane
> 
> 
> 
> -----Message d'origine-----
> De : rtgwg-bounces@ietf.org [mailto:rtgwg-bounces@ietf.org] De la part de Yangang
> Envoyé : lundi 21 octobre 2013 03:49
> À : rtgwg@ietf.org
> Cc : Zhangxudong (zhangxudong, VRP); Yangang
> Objet : Soliciting WG feedback and comments on draft-zxd-rtgwg-ordered-metric-adjustment-00
> 
> Hi:
> 
> We had submitted the a new draft: http://tools.ietf.org/html/draft-zxd-rtgwg-ordered-metric-adjustment-00, we want to discuss the micro-loop problem through another method. Your feedback and comments on the rtgwg mailing list are appreciated. 
> 
> Thanks,
> Rahul.Yan
> 
> -----邮件原件-----
> 发件人: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] 
> 发送时间: 2013年10月18日 15:47
> 收件人: Zhangxudong (zhangxudong, VRP); Yangang
> 主题: New Version Notification for draft-zxd-rtgwg-ordered-metric-adjustment-00.txt
> 
> 
> A new version of I-D, draft-zxd-rtgwg-ordered-metric-adjustment-00.txt
> has been successfully submitted by Xudong Zhang and posted to the
> IETF repository.
> 
> Filename:	 draft-zxd-rtgwg-ordered-metric-adjustment
> Revision:	 00
> Title:		 Algorithm for Ordered Metric Adjustment
> Creation date:	 2013-10-18
> Group:		 Individual Submission
> Number of pages: 10
> URL:             http://www.ietf.org/internet-drafts/draft-zxd-rtgwg-ordered-metric-adjustment-00.txt
> Status:          http://datatracker.ietf.org/doc/draft-zxd-rtgwg-ordered-metric-adjustment
> Htmlized:        http://tools.ietf.org/html/draft-zxd-rtgwg-ordered-metric-adjustment-00
> 
> 
> Abstract:
>   Upon link down event or link up event, each device in network
>   individually schedules route calculation.  Because of different
>   hardware capabilities and internal/external environments, the time to
>   update forwarding entries on these devices are disordered which can
>   cause a transient forwarding loop.  This document introduces a method
>   to prevent forwarding loop by adjusting link metric gradually for
>   several times.
> 
> 
> 
> 
> 
> 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
> 
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