[Bier] Warren Kumari's Discuss on draft-ietf-bier-mpls-encapsulation-10: (with DISCUSS and COMMENT)
Warren Kumari <warren@kumari.net> Tue, 24 October 2017 19:26 UTC
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From: Warren Kumari <warren@kumari.net>
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Cc: draft-ietf-bier-mpls-encapsulation@ietf.org, Tony Przygienda <tonysietf@gmail.com>, bier-chairs@ietf.org, tonysietf@gmail.com, bier@ietf.org
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Date: Tue, 24 Oct 2017 12:26:30 -0700
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Subject: [Bier] Warren Kumari's Discuss on draft-ietf-bier-mpls-encapsulation-10: (with DISCUSS and COMMENT)
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Warren Kumari has entered the following ballot position for draft-ietf-bier-mpls-encapsulation-10: Discuss 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 IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-bier-mpls-encapsulation/ ---------------------------------------------------------------------- DISCUSS: ---------------------------------------------------------------------- I believe that there needs to be better guidance of what to do when the TTL expires (and want to thank Al (OpsDir) for noticing this): "Of course, if the incoming TTL is 1, the packet MUST be treated as a packet whose TTL has been exceeded. The packet MUST NOT be forwarded, but it MAY be passed to other layers for processing (e.g., to cause an ICMP message to be generated, and/or to invoke BIER-specific traceroute procedures, and/or to invoke other OAM procedures.)" I have read the response to the OpsDir review (https://www.ietf.org/mail-archive/web/ops-dir/current/msg02897.html) -- I fully agree that mandating a response to every packet would be bad, but I think that "it MAY be passed to other layers for processing" is too weak. I think SHOULD would be fine, or, even better, something about "SHOULD, with optional implementation specific rate-limiting" or something. The current text makes it sound like it's perfectly fine to just not bother implementing any sort of reporting / response handing after dropping the packet. I think that this should be an easy fix and not hold up the document (much or at all) ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- I like the document (with Mirja's MTU issue resolution) - I went through trying to find nit's to improve it, but came up dry!
- [Bier] Warren Kumari's Discuss on draft-ietf-bier… Warren Kumari
- Re: [Bier] Warren Kumari's Discuss on draft-ietf-… Antoni Przygienda