Hi Jie, Regarding your point (2), my understanding is that this feature applies to OSPF cost (i.e., IGP metric) and as an extension is applicable to both the "base" SPF as well as any SPF computation (including FlexAlgo) that uses IGP metric. You are right, that the draft should clarify this. Moreover, the use-case description of flex-algo in section 2.2 is misleading - it can be achieved using this feature only if the flex-algo definition is using some metric type other than IGP metric.
The authors can correct my understanding. Thanks, Ketan On Thu, Feb 29, 2024 at 1:01 PM Dongjie (Jimmy) <jie.dong= [email protected]> wrote: > Hi Yingzhen, > > > > I’ve read the latest version of this document and support its adoption. > It is a useful feature in general to exclude some of the links from SPF > computation. > > > > I also have some comments for the authors to consider, they can be solved > after the adoption. > > > > 1. I’m not sure the purpose is to advertise an unreachable link in > OSPF, from the use cases in the draft, the link is still reachable and can > be used for some services, just it needs be excluded from normal SPF > calculation. If this is correct, it is better the title of the draft and > the name of the new capability Flag need to be updated to reflect this. > > > > 2. In the Flex-Algo use case, if the metric of a link is set to > MaxLinkMetric (0xFFFF) to exclude it from normal SPF computation, while a > Flex-Algo is defined to use the same metric type for path calculation, will > it cause the link also be excluded from the Flex-Algo path computation? If > not, will metric value 0xFFFF be used in the Flex-Algo computation? In > other word, the interaction between this new feature and Flex-Algo needs to > be further elaborated. > > > > Best regards, > > Jie > > > > *From:* Lsr [mailto:[email protected]] *On Behalf Of *Yingzhen Qu > *Sent:* Friday, February 23, 2024 1:28 PM > *To:* lsr <[email protected]>; lsr-chairs <[email protected]> > *Subject:* [Lsr] WG Adoption Call - draft-gong-lsr-ospf-unreachable-link > (02/23/24 - 03/08/24) > > > > Hi, > > > > This email begins a 2 week WG adoption poll for the following draft: > > https://datatracker.ietf.org/doc/draft-gong-lsr-ospf-unreachable-link/ > > > > Please review the document and indicate your support or objections by March > 8th, 2024. > > Authors and contributors, please respond to the list indicating whether you > are aware of any IPR that applies to the draft. > > Thanks, > > Yingzhen > > _______________________________________________ > Lsr mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/lsr >
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