[Bier] Zaheduzzaman Sarker's No Objection on draft-ietf-bier-te-arch-10: (with COMMENT)
Zaheduzzaman Sarker via Datatracker <noreply@ietf.org> Thu, 26 August 2021 12:15 UTC
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Date: Thu, 26 Aug 2021 05:15:48 -0700
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Subject: [Bier] Zaheduzzaman Sarker's No Objection on draft-ietf-bier-te-arch-10: (with COMMENT)
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Zaheduzzaman Sarker has entered the following ballot position for draft-ietf-bier-te-arch-10: No Objection When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-bier-te-arch/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Thanks for the efforts on this document. Due to lack of time on my side (apologies) I quickly read through the document and didn't find any transport related issue sticking out. I agree with TSVART reviewer (Thanks Tommy Pauly) that this seems useful to reduce duplicate packets to avoid unnecessary effects in the higher layers. I have two clarification questions: * Section 5.3.6.2: if there is 6 SIs in the example then why does the it loops through only 5 of them? see the text below - On all area edge BFR, bea in BIFT:SI=k|k=2...6 is populated with forward_routed(BFRka) and beb in BIFT:SI=k with forward_routed(BFRkb). For BIER-TE forwarding of a packet to a subset of BFERs across all areas, a BFIR would create at most 6 copies, with SI=1...SI=6, * This might be completely my misunderstanding, however, I understood that BIER-TE supports multiple domains and subdomains, where multiple domains may not be under same implementer. In that case, would their not be issues for BIER-TE controllers to show robust behavior if there is no default ECMP algorithm? Also the implementer is expected to document their ECMP of choice, I didn't understand in what format and to who the documentation applies. Also there is no discussions on what happens if there is no such documentation.
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