Re: [Bier] WG adoption call for draft-chen-bier-frr-02
Michael Menth <menth@uni-tuebingen.de> Tue, 16 March 2021 11:11 UTC
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From: Michael Menth <menth@uni-tuebingen.de>
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Date: Tue, 16 Mar 2021 12:11:16 +0100
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Subject: Re: [Bier] WG adoption call for draft-chen-bier-frr-02
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Hi Tony, all, Am 16.03.2021 um 11:08 schrieb Tony Przygienda: > I think it's a good addition within the architecture for the case IGP is > not used for signalling, e.g. when controller or static programming. Right. The solution may make sense if the routing underlay does not offer FRR capabilities. > > The draft must however explain in what scenarios it is used and quote > the according IGP drafts to guarantee loop-free behavior (well, BIER > will tie-break loops but we'll have 1x microloop & possibly not deliver > payload if BIER FRR is not properly computed/intsalled). With that the > draft should also pay attention to how the function is deployed/updated > network-wide if IGP is not present I agree. in the absence of an IGP, the "native BIER-FRR on bier layer" must be set by a controller. So, below the line, an applicability statement would be helpful. What are those cases? - IGP running but without FRR on the routing underlay? - No IGP and no FRR on the routing underlay? However, if the controller takes care of BIER-FRR, what could be reasons for missing FRR on the routing underlay? If there is a FRR on the routing underlay (also provided through a controller), tunnel-based bier-frr solves the problem in a transparent way. BTW, we studied protection variants for controller-based infrastructures (for routing underlays, not for BIER). Challenge is to keep state low. LFA-based solutions help a lot and outperform others. 100% protection is possible with only little additions. Results are available: https://atlas.informatik.uni-tuebingen.de/~menth/papers/Menth20-Sub-6.pdf (under revision) Regards, Michael > > thanks > > -- tony > > On Tue, Mar 16, 2021 at 7:41 AM <zhang.zheng@zte.com.cn > <mailto:zhang.zheng@zte.com.cn>> wrote: > > A 2-week WG adoption call begins for the following draft: > > https://datatracker.ietf.org/doc/draft-chen-bier-frr/ > <https://datatracker.ietf.org/doc/draft-chen-bier-frr/> > > Please indicate your support or objection by March 30th, 2021. > > Authors, please respond to the list indicating whether you are aware > of any IPR that applies to this draft. > > Thanks, > > Sandy (As WG secretary, on behalf of Greg/Tony) > > > > _______________________________________________ > BIER mailing list > BIER@ietf.org > https://www.ietf.org/mailman/listinfo/bier > -- Prof. Dr. habil. Michael Menth University of Tuebingen Faculty of Science Department of Computer Science Chair of Communication Networks Sand 13, 72076 Tuebingen, Germany phone: (+49)-7071/29-70505 fax: (+49)-7071/29-5220 mailto:menth@uni-tuebingen.de http://kn.inf.uni-tuebingen.de
- [Bier] WG adoption call for draft-chen-bier-frr-02 zhang.zheng
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gyan Mishra
- [Bier] 答复: WG adoption call for draft-chen-bier-f… qinfengwei
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Aijun Wang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… peng.shaofu
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… peng.shaofu
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Bidgoli, Hooman (Nokia - CA/Ottawa)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Linda Dunbar
- Re: [Bier] WG adoption call for draft-chen-bier-f… Yanhe Fan
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael McBride
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Donald Eastlake
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeff Tantsura
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… LEI LIU
- Re: [Bier] WG adoption call for draft-chen-bier-f… peng.shaofu
- Re: [Bier] WG adoption call for draft-chen-bier-f… duanfanghong
- Re: [Bier] WG adoption call for draft-chen-bier-f… Lizhenbin
- Re: [Bier] WG adoption call for draft-chen-bier-f… Xufeng Liu
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gyan Mishra
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… zhangzhe (M)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Steffen Lindner
- Re: [Bier] WG adoption call for draft-chen-bier-f… Daniel Merling
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Mirsky
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Shepherd
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael McBride
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Shepherd
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael McBride
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Adrian Farrel
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gyan Mishra
- Re: [Bier] WG adoption call for draft-chen-bier-f… peng.shaofu
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Tony Przygienda
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth
- Re: [Bier] WG adoption call for draft-chen-bier-f… Gengxuesong (Geng Xuesong)
- Re: [Bier] WG adoption call for draft-chen-bier-f… peng.shaofu
- Re: [Bier] WG adoption call for draft-chen-bier-f… Jeffrey (Zhaohui) Zhang
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Shepherd
- Re: [Bier] WG adoption call for draft-chen-bier-f… Mankamana Mishra (mankamis)
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Shepherd
- Re: [Bier] WG adoption call for draft-chen-bier-f… Huaimo Chen
- Re: [Bier] WG adoption call for draft-chen-bier-f… Greg Shepherd
- Re: [Bier] WG adoption call for draft-chen-bier-f… Michael Menth