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Re: [dtn] Revival of the IMC multicast scheme

Olivier De jonckere <olivierdejonckere@gmail.com> Wed, 14 December 2022 00:15 UTC

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From: Olivier De jonckere <olivierdejonckere@gmail.com>
Date: Wed, 14 Dec 2022 01:15:29 +0100
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To: "sburleig.sb" <sburleig.sb@gmail.com>
Cc: "Sipos, Brian J." <Brian.Sipos@jhuapl.edu>, dtn@ietf.org
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Subject: Re: [dtn] Revival of the IMC multicast scheme
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Yes, sorry my answer was not clear, as ION-like networks and trees were
mentioned, I just wanted to point out that ION's code does not match the
draft anymore since the post 2019 multicast updates.

Olivier

Le mer. 14 déc. 2022 à 01:08, <sburleig.sb@gmail.com> a écrit :

> Olivier, you’re right, the original draft is certainly not up to date.
> It’s a starting point for a new draft, which needs to address the kinds of
> questions Brian is asking.
>
>
>
> Scott
>
>
>
> *From:* Olivier De jonckere <olivierdejonckere@gmail.com>
> *Sent:* Tuesday, December 13, 2022 12:51 PM
> *To:* Sipos, Brian J. <Brian.Sipos@jhuapl.edu>
> *Cc:* sburleig.sb <sburleig.sb@gmail.com>; dtn@ietf.org
> *Subject:* Re: [dtn] Revival of the IMC multicast scheme
>
>
>
> Hello,
>
>
>
> The draft might not be up to date.
>
>
>
> CGR-multicast with extension bloc was introduced. It gathers the set of
> members, gets a route per destination with CGR and forward one copy per
> downstream branch with an EB carrying the remaining destination to serve
> for that branch (similarly to Xcast). Volume management can still be
> improved.
>
>
>
> I believe a group 0 was introduced to advertise membership within a region.
>
>
>
> Best,
>
>
>
> Olivier
>
>
>
> Le mar. 13 déc. 2022 à 23:39, Sipos, Brian J. <Brian.Sipos@jhuapl.edu> a
> écrit :
>
> Scott,
>
> Would you be interested in reviving the IMC endpoint draft [1] and
> updating the membership petitions for BPv7 and potentially multiple groups?
>
> If so, I would be happy to review and contribute to the document. I have
> some feedback about group registration and comments/questions about service
> identification. I also have some questions about how an ION-based network
> would bootstrap a multicast tree currently.
>
> Thanks,
>
> Brian S.
>
>
>
> [1] https://datatracker.ietf.org/doc/html/draft-burleigh-dtnrg-imc-00
>
>
>
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