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Re: [Bier] draft-chen-bier-frr-02 - relation to tunnel-based bier-frr

Tony Przygienda <tonysietf@gmail.com> Tue, 16 March 2021 10:11 UTC

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From: Tony Przygienda <tonysietf@gmail.com>
Date: Tue, 16 Mar 2021 11:10:32 +0100
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To: Michael Menth <menth@uni-tuebingen.de>
Cc: BIER WG <bier@ietf.org>
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Subject: Re: [Bier] draft-chen-bier-frr-02 - relation to tunnel-based bier-frr
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Opportunity to join in the effort with according author's list?

-- tony

On Tue, Mar 16, 2021 at 10:10 AM Michael Menth <menth@uni-tuebingen.de>
wrote:

> Hi all, in particular authors of draft-chen-bier-frr,
>
> in the introduction of your draft you state issues with tunnel-based
> frr, but the text is unclear to me:
> https://tools.ietf.org/html/draft-chen-bier-frr-02#section-1
>
> To avoid this supposed shortcoming, you propose a different bier-frr
> approach. Can you clarify, please?
>
> An in-depts comparison between tunnel-based frr, which leverages frr of
> the underlay, and "native frr on the bier layer" can be found here:
> https://atlas.informatik.uni-tuebingen.de/~menth/papers/Menth20c.pdf
>
> The latter approach has been first published as
> [3] I. Wijnands, G. J. Shepherd, C. J. Martin, and R. Asati, Per-Prefix
> LFA FRR with Bit Indexed Explicit Replication,
> https://patents.google.com/patent/US20180278470A1/en, Sep.2018.
>
> AFAIK this is also the concept followed by draft-chen-bier-frr, but I am
> not fully sure as this has not been cited. Reaction speeds of both
> mechanisms should be similar as they depend mainly on the time to
> notification about the failure. Experimental results for
> draft-merling-bier-frr are provided in the paper cited in my previous
> email.
>
> Kind regards
>
> Michael
>
> --
> 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
>
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