Re: [pim] Éric Vyncke's No Objection on draft-ietf-pim-igmp-mld-yang-12: (with COMMENT)
"Eric Vyncke (evyncke)" <evyncke@cisco.com> Fri, 24 May 2019 07:25 UTC
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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
To: Xufeng Liu <xufeng.liu.ietf@gmail.com>
CC: The IESG <iesg@ietf.org>, "draft-ietf-pim-igmp-mld-yang@ietf.org" <draft-ietf-pim-igmp-mld-yang@ietf.org>, Stig Venaas <stig@venaas.com>, Alvaro Retana <aretana.ietf@gmail.com>, "pim-chairs@ietf.org" <pim-chairs@ietf.org>, "pim@ietf.org" <pim@ietf.org>
Thread-Topic: Éric Vyncke's No Objection on draft-ietf-pim-igmp-mld-yang-12: (with COMMENT)
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Date: Fri, 24 May 2019 07:24:24 +0000
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Subject: Re: [pim] Éric Vyncke's No Objection on draft-ietf-pim-igmp-mld-yang-12: (with COMMENT)
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Xufeng Thank you for the updated document and the actions on my comments. I am still unsure whether having two branches (IPv4 & IPv6) is the right thing to do but I am trusting the WG as well as the YANG doctors on this topic. Regards -éric From: Xufeng Liu <xufeng.liu.ietf@gmail.com> Date: Thursday, 23 May 2019 at 20:26 To: Eric Vyncke <evyncke@cisco.com> Cc: The IESG <iesg@ietf.org>, "draft-ietf-pim-igmp-mld-yang@ietf.org" <draft-ietf-pim-igmp-mld-yang@ietf.org>, Stig Venaas <stig@venaas.com>, Alvaro Retana <aretana.ietf@gmail.com>, "pim-chairs@ietf.org" <pim-chairs@ietf.org>, "pim@ietf.org" <pim@ietf.org> Subject: Re: Éric Vyncke's No Objection on draft-ietf-pim-igmp-mld-yang-12: (with COMMENT) Hi Éric, Thanks for the review. We have posted an updated revision https://tools.ietf.org/html/draft-ietf-pim-igmp-mld-yang-13, to address these comments. Best regards, - Xufeng On Mon, May 20, 2019 at 8:53 AM Éric Vyncke via Datatracker <noreply@ietf.org<mailto:noreply@ietf.org>> wrote: Éric Vyncke has entered the following ballot position for draft-ietf-pim-igmp-mld-yang-12: 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 IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-pim-igmp-mld-yang/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Thanks for the work everyone has put into this document. I only have a couple of comments (but one important one about the 2 branches) and a couple of nits. == COMMENTS == -- Section 2.1.1 and section 2.1.2 -- Those sections are about configuration parameters not covered at global or interface level. But, what about operational states, can the reader assume that they are all covered by this document ? It is really unclear. [Xufeng]: These parameters should cover both configuration parameters and operational states. Since we are following NMDA structure, the same parameter can be for both configuration and operational state. We have changed the phrase “The configuration parameters” to “The configuration parameters and operational states”. -- Section 2.3 -- As I am not a multicast expert, I did not put a DISCUSS on this one. But, are MLD and IGMP so different? Why having TWO different branches for each address family... For SNMP, RFC 4292/4293 was made protocol version independent which is a big plus IMHO for operations. In any case, there should be more explanations why there are two branches than the one paragraph/two sentences in section 2.3. Moreover, it seems that the two schema branches are quite similar so having one protocol version independent branch appears to be doable. [Xufeng]: We agree that one branch is doable, but the current structure reflects the result of the discussions from the design team and working group. The reasons are: - The model can support IGMP, MLD, or both optionally and independently. Such a flexibility cannot be achieved cleanly with a combined branch. - The structure is consistent with other YANG models such as RFC8344, which uses separate branches for ipv4 and ipv6. It is true that some SNMP modules are address-family-independent, such as ipForward in RFC4292, but there are also address-family-separated objects like ipv4InterfaceTable/ipv6InterfaceTable in RFC4293. IGMP and MLD are specified as separate protocols, specified as separate RFCs. Naturally separate protocol identities can be defined for each. This is similar to the structures specified for OSPFv2 and OSPFv3, in https://tools.ietf.org/html/draft-ietf-ospf-yang. - The separate branches for IGMP and MLD can accommodate their differences better and cleaner. The two branches can better support different features and node types. We have expanded the text a bit more to explain. == NITS == -- Section 1 -- Add a reference to NMDA (expanding the acronym is not really sufficient, state RFC 8342) ? [Xufeng]: Added the reference. Expand CLI even if well-known. [Xufeng]: Modified as suggested.
- [pim] Éric Vyncke's No Objection on draft-ietf-pi… Éric Vyncke via Datatracker
- Re: [pim] Éric Vyncke's No Objection on draft-iet… Xufeng Liu
- Re: [pim] Éric Vyncke's No Objection on draft-iet… Eric Vyncke (evyncke)