[pim] Re: Mohamed Boucadair's No Objection on draft-ietf-pim-mofrr-tilfa-09: (with COMMENT)

[linchangwang <[e-mail]>]

Hi Med,

Thank you for your thoughtful comments and suggestions.

All your new comments have been addressed in latest version.

https://datatracker.ietf.org/doc/draft-ietf-pim-mofrr-tilfa/12/

Pls check and let us know if there are any further comments.

Thanks,
Changwang



-----邮件原件-----
发件人: [e-mail] <[e-mail]> 
发送时间: 2025年4月1日 1:01
收件人: linchangwang (RD) <[e-mail]>; The IESG <[e-mail]>
抄送: [e-mail]; [e-mail]; [e-mail]; [e-mail]; [e-mail]
主题: RE: Mohamed Boucadair's No Objection on draft-ietf-pim-mofrr-tilfa-09: (with COMMENT)

Hi Changwang, 

This looks better. Thanks.

I guess:

* s/The all nodes on the backup/All nodes on the backup
* s/As the administrator is manually/If an administrator is manually
* s/Explicit Vector/Explicit RPF Vector?
* s/mtrace/mtrace [RFC8487]

Cheers,
Med

> -----Message d'origine-----
> De : linchangwang <[e-mail]> Envoyé : lundi 31 mars 
> 2025 18:47 À : BOUCADAIR Mohamed INNOV/NET 
> <[e-mail]>; The IESG <[e-mail]> Cc : 
> [e-mail]; [e-mail]; 
> [e-mail]; [e-mail]; [e-mail] Objet : Re: Mohamed 
> Boucadair's No Objection on draft-ietf-pim-
> mofrr-tilfa-09: (with COMMENT)
> 
> 
> Hi Med,
> 
> I submitted version-11 to address the following comments:
> 
> Link:
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> datatracker.ietf.org%2Fdoc%2Fdraft-ietf-pim-mofrr-
> tilfa%2F11%2F&data=05%7C02%7Cmohamed.boucadair%40orange.com%7C8ea1
> daf1905a4b2ef3c408dd7073ac96%7C90c7a20af34b40bfbc48b9253b6f5d20%7C
> 0%7C0%7C638790364324503400%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGk
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> joyfQ%3D%3D%7C0%7C%7C%7C&sdata=kiQIDH%2Bg%2Bzffur3kbaXnHxjud4%2FUP
> eOClGuvYTUV2%2Bs%3D&reserved=0
> 
> Please see inline...
> 
> Thanks,
> Changwang
> 
> -----邮件原件-----
> 发件人: [e-mail] <[e-mail]>
> 发送时间: 2025年3月30日 17:10
> 收件人: linchangwang (RD) <[e-mail]>; The IESG 
> <[e-mail]>
> 抄送: [e-mail]; [e-mail]; 
> [e-mail]; [e-mail]; [e-mail]
> 主题: RE: Mohamed Boucadair's No Objection on draft-ietf-pim-mofrr-
> tilfa-09: (with COMMENT)
> 
> Hi Changwang,
> 
> Thank you for taking care of the review.
> 
> (1) This version addresses all my comments, except on the "operational 
> considerations". I understand that removing the mention can be seen as 
> a fix, but I was actually hoping we elaborate more on these matters 
> :-)
> 
> For example, I would appreciate if we can consider adding some text to 
> answer the few questions raised by Jürgen in his opsdir review of -05 
> (pointing to 7916 when appropriate would be sufficient, though):
> 
>   "How is this extension deployed? Can it be deployed incrementally or 
> do
>    all multicast routers have to understand the RPF Vector Attributes 
> in
>    the PIM Join packet to work properly? And are there any further
>    recommendations about debuggingoperational or deployment errors, 
> are
>    there procedures to verify that the calculated alternative routes 
> or
>    is thisno different than with other fast multicast reroute
>    mechanisms?"
> 
> [Changwang]: Version-11 adds Section 6: Management and Operational 
> Considerations, to see if it resolves this issue.
> 
> (2) If you keep the current wording, then I'm afraid that we will need 
> to remove RFC7916 from being listed as Normative and list it as 
> Informative.
> 
> [Changwang]: Version-11 adds Section 6: Management and Operational 
> Considerations, to see if it resolves this issue.
> 
> (3) (nitty nit), please replace all PIM join mentions with PIM Join.
> 
> [Changwang]: thanks, Modified in version-11.
> 
> 
> Thank you.
> 
> Cheers,
> Med
> 
> > -----Message d'origine-----
> > De : linchangwang <[e-mail]> Envoyé : samedi
> 29 mars
> > 2025 12:39 À : BOUCADAIR Mohamed INNOV/NET 
> > <[e-mail]>; The IESG <[e-mail]> Cc :
> > [e-mail]; [e-mail]; 
> > [e-mail]; [e-mail] Objet : Re: Mohamed Boucadair's No 
> > Objection on draft-ietf-pim-mofrr-
> > tilfa-09: (with COMMENT)
> >
> >
> > Hi Med,
> >
> > Thank you for your review.
> > We appreciate your thoughtful comments and suggestions.
> >
> > All your comments have been addressed in latest version.
> >
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
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> >
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> serv
> > ed=0
> >
> > Pls check and let us know if there are any further comments.
> >
> >
> > Thanks,
> > Changwang
> >
> >
> >
> > -----邮件原件-----
> > 发件人: Mohamed Boucadair via Datatracker <[e-mail]>
> > 发送时间: 2025年3月24日 21:30
> > 收件人: The IESG <[e-mail]>
> > 抄送: [e-mail]; [e-mail]; 
> > [e-mail]; [e-mail]; [e-mail]
> > 主题: Mohamed Boucadair's No Objection on draft-ietf-pim-mofrr-
> tilfa-
> > 09: (with COMMENT)
> >
> > Mohamed Boucadair has entered the following ballot position for
> > draft-ietf-pim-mofrr-tilfa-09: 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
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> c%3D&reserved=0.
> > ietf.org%2Fabout%2Fgroups%2Fiesg%2Fstatements%2Fhandling-ballot-
> >
> positions%2F&data=05%7C02%7Cmohamed.boucadair%40orange.com%7Cbb238
> f3ce
> >
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> ved=
> > 0
> > for more information about how to handle DISCUSS and COMMENT 
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> > The document, along with other ballot positions, can be found
> here:
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> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> data
> >
> %2F&data=05%7C02%7Cmohamed.boucadair%40orange.com%7C8ea1daf1905a4b
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> > tracker.ietf.org%2Fdoc%2Fdraft-ietf-pim-mofrr-
> >
> tilfa%2F&data=05%7C02%7Cmohamed.boucadair%40orange.com%7Cbb238f3ce
> 1024
> >
> 88fc62e08dd6eb66a80%7C90c7a20af34b40bfbc48b9253b6f5d20%7C0%7C0%7C6
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> >
> %7C&sdata=71NjLz6HzKLcKcQEbAemaTt%2FGxIhFZDXZVOM%2BhJfpEo%3D&reser
> ved=
> > 0
> >
> >
> >
> > ----------------------------------------------------------------
> ------
> > COMMENT:
> > ----------------------------------------------------------------
> ------
> >
> > Hi Yisong, Mike, Zheng, Jingrong, and Changwang,
> >
> > Thank you for the effort put into this specification.
> >
> > Please find below some comments:
> >
> > # Abstract
> >
> > CURRENT:
> >
> >    The
> >    document outlines the necessary protocol extensions and
> operational
> >    considerations to implement TI-LFA in conjunction with MoFRR
> for
> > PIM,
> >    ensuring that multicast traffic is rapidly rerouted in the
> event of
> > a
> >    failure.
> >
> > ## On “protocol extensions”: Seems conflicting with the intended
> Info
> > status and also the clarification note included in the intro and 
> > another section.
> >
> > ## On “operational considerations” or lack of
> >
> > (1) Which part of the document are you referring to?
> > (2) I was expecting to see at least RFC8102 referenced in the
> main
> > body on the manageability aspects (3) Also, is the approach
> immune
> > against micro loops? If not a concern, can we explicit that in
> the
> > doc?
> >
> > # Introduction:
> >
> > (1)
> >
> > CURRENT:
> >    The increasing deployment of video services has heightened
> the
> >    importance for network operators to implement solutions that 
> > minimize
> >    service disruptions caused by faults in the IP networks ...
> >
> > One would argue that the increase is related to unicast
> delivery,
> > mainly.
> > Deleting this sentence and starting with the sentence right
> after
> > would be fine. No need to over motivate the need ;-)
> >
> > (2)
> >
> > CURRENT:
> >    fast reroute defined in [RFC7431], has limitations in certain
> >    multicast deployment scenarios.
> >
> > Can we call these limitations out or point to the section where
> this
> > is discussed?
> >
> > (3)
> >
> > CURRENT:
> >     The
> >    applicability of this mechanism extends to PIM networks,
> including
> >    scenarios where PIM operates over native IP, as well as
> public
> >    network multicast trees established by PIM .  Additionally,
> this
> >    document addresses scenarios involving Multicast Distribution
> Tree
> >    (MDT) SAFI for Multicast VPN (MVPN) in [RFC6037] and
> [RFC6514],..
> >
> > * “public network multicast trees”: Do you mean inter-domain? If
> so,
> > some discussion on the implications/deployment considerations
> are
> > needed. * “[RFC6037] and [RFC6514]”: Why is this cited? Why this 
> > specific flavor? What about RFC6513? If you maintain this
> mention, can
> > we have an example to illustrate the use?
> >
> > # Section 2.1
> >
> > * “For multicast source S1, …”: The receiver should be mentioned
> also.
> > * Better to include the metrics directly in the graph as this
> eases
> > following the example. * Mention that all link metrics are 
> > bidirectional?
> >
> > # Section 2.2
> >
> > “is neither on the path from the source node to node N”: The
> source
> > node should be clarified to avoid confusion with multicast
> source.
> >
> > # Section 5
> >
> > CURRENT:
> >    This document specifies an optional approach for backup join
> paths,
> >    intended to enhance the protection scope of existing
> multicast
> >    systems.  It is fully compatible with existing protocol
> >    implementations and does not require changes to protocols or
> >    forwarding functions on intermediate nodes.  In the event of
> PIM
> > Join
> >    conflicts, Join messages without the RPF Vector attribute are 
> > prioritized to
> >    ensure that the original PIM forwarding functionality remains
> >    unaffected.
> >
> > Already mentioned in the introduction. Any reason this text
> repeated?
> > I would delete it.
> >
> > # Full review
> >
> > More comments, edits, nits, etc. can be found here:
> >
> > * pdf:
> >
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> gith
> >
> %2F&data=05%7C02%7Cmohamed.boucadair%40orange.com%7C8ea1daf1905a4b
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> >
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> >
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