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Re: [Bier] AD Review of draft-ietf-bier-pim-signaling-12

"Bidgoli, Hooman (Nokia - CA/Ottawa)" <hooman.bidgoli@nokia.com> Fri, 06 August 2021 13:54 UTC

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From: "Bidgoli, Hooman (Nokia - CA/Ottawa)" <hooman.bidgoli@nokia.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, "draft-ietf-bier-pim-signaling@ietf.org" <draft-ietf-bier-pim-signaling@ietf.org>
CC: Nabeel Cocker <nabeel.cocker@gmail.com>, "bier-chairs@ietf.org" <bier-chairs@ietf.org>, BIER WG <bier@ietf.org>
Thread-Topic: AD Review of draft-ietf-bier-pim-signaling-12
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Date: Fri, 06 Aug 2021 13:54:16 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/bier/j1MkwRRHe90mJ7gS2Mj9dVWPaSY>
Subject: Re: [Bier] AD Review of draft-ietf-bier-pim-signaling-12
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Hi Alvaro

Inline HB2>

Thanks
Hooman

-----Original Message-----
From: Alvaro Retana <aretana.ietf@gmail.com> 
Sent: Friday, August 6, 2021 8:06 AM
To: Bidgoli, Hooman (Nokia - CA/Ottawa) <hooman.bidgoli@nokia.com>; draft-ietf-bier-pim-signaling@ietf.org
Cc: Nabeel Cocker <nabeel.cocker@gmail.com>; bier-chairs@ietf.org; BIER WG <bier@ietf.org>
Subject: RE: AD Review of draft-ietf-bier-pim-signaling-12

On August 5, 2021 at 8:54:05 PM, Bidgoli, Hooman (Nokia - CA/Ottawa) wrote:

Hi!


...
> On one hand... I understand that a PIM adjacency is not formed over 
> the BIER domain. *But* PIM packets and processes are used. For 
> example, §3.1 talks about sending a PIM packet encapsulated in BIER -- 
> if it is a PIM packet then it must follow rfc7761. This includes 
> defining a new PIM Join Attribute.
>
HB> how about if we change it to "signaling packet" and in a paragraph 
HB> explain these signaling packets have PIM join,prune packet formats? 
HB> Would that remove the confusion?

Explaining that it is the format and not the packet/function is what is needed, but I don't think that a paragraph is enough as there are many places in the text that refer to PIM/rfc7761.  But, yes, that is the right direction.

HB2> ok I'll go through the doc and try to change this, I think this will make the draft very confusing. But before I do that I think we need to agree what we need to call this signaling packet.
HB2> are you ok with "PIM signaling packet"? or "BIER signaling packet"? I personally prefer "PIM signaling packet" as it will give the reader a view that a PIM format signaling packet is being used.

...
> In summary, you can't reuse rfc7761 without complying with it.
>
HB> sorry this is not clear, I don't think at any place we are using 
HB> rfc7761 in the BIER core or trying to comply with it in the BIER 
HB> core. Why is not possible to choose a existing packet format and 
HB> reuse it for purpose of singling a desire?

Reusing a format is different than sending a PIM packet through the BIER domain and expect the receiver to act differently, which is what the document currently says; for example, §3.1 is clear in saying that a PIM packet (not something that uses the format of a Join/Prune
message) is used.

In any case, these are the types of things that need to be cleaned up.


...
> We should plan a call to talk this over. It would be nice to have the 
> Shepherd + Authors, but any combination works for me. Please find a 
> time that works for you -- here's my calendar:
> https://doodle.com/mm/alvaroretana/book-a-time
>
HB> sure I book some thing next week



BTW, I keep getting bounces from Jeffrey’s address — it should be @ juniper.net (not .com).  Also  from Fengman’s addresses.  And Ice is no longer at cisco.  Please update.



Thanks!

Alvaro.

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