[Bier] BIER(-FRR) prototype in P4
Michael Menth <menth@uni-tuebingen.de> Wed, 29 July 2020 11:27 UTC
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To: BIER WG <bier@ietf.org>
From: Michael Menth <menth@uni-tuebingen.de>
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Date: Wed, 29 Jul 2020 13:27:21 +0200
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Subject: [Bier] BIER(-FRR) prototype in P4
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Dear Working Group, Daniel will give today a report about our feasibility study for implementation of BIER and BIER-FRR on a programmable P4-based dataplane (Tofine ASIC) including a performance evaluation. https://datatracker.ietf.org/meeting/108/agenda/#2020-07-29-100000 Take-aways: 0) We demonstrated that BIER can be implemented in P4. 1) Tunnel-based BIER-FRR was easy to implement. It is documented in https://tools.ietf.org/html/draft-merling-bier-frr-00 It is a tunnel-based approach while others pursue an LFA-based approach which is not documented in a draft. We've discussed last year after the meeting about this issue and a comparison of both approaches can be found here: https://atlas.informatik.uni-tuebingen.de/~menth/papers/Menth20c.pdf 2) We have implemented BIER-TE and BIER-TE-FRR on the software switch BMv2. We're confident that implementation in P4 on the Tofino ASIC is also possible. 3) We're interested in other mechanisms / use cases from the ietf that cannot be implemented on legacy hardware. We'd like to know how far can we get with programmable data planes. We happy to discuss. 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
- [Bier] BIER(-FRR) prototype in P4 Michael Menth
- Re: [Bier] BIER(-FRR) prototype in P4 Tony Przygienda
- Re: [Bier] BIER(-FRR) prototype in P4 Toerless Eckert