Re: [babel] About BIER in Babel

Hi Dave,

Take a look at
https://datatracker.ietf.org/doc/html/draft-ietf-bier-architecture
and https://datatracker.ietf.org/doc/html/draft-ietf-bier-mpls-encapsulation
.
The latter allows use over Ethernet (despite the old draft title).  The
IPv6 encapsulation does not have WG agreement to adopt and wasn't discussed
this IETF.

Regards,
Alia

On Tue, Mar 28, 2017 at 5:48 PM, Dave Taht <dave.taht@gmail.com> wrote:

> ... up until this moment I was mostly ignorant of bier. I may well
> still be overly ignorant, but read on.
>
> On Tue, Mar 28, 2017 at 1:47 PM, Juliusz Chroboczek <jch@irif.fr> wrote:
> > Dear Sandy, dear all,
> >
> > I think there are very good reasons why it would be interesting to
> > experiment with BIER and Babel.  As you explained, there are at least two
> > approaches worth considering:
> >
> >   - announce BIER routing directly in Babel, as your draft suggests;
> >   - use MLD with Babel.
> >
> > I am not competent to judge which approach is suitable, but it is clearly
> > attractive to run a single protocol.
> >
> > As I mentioned at the mike, there are a number of problems with your
> > encoding.  My personal intuition would be to use a new AE number for
> BIER,
> > but of course someone would need to write it down and check the details.
>
> However, leveraging this encoding over the others in the core draft seems
> straightforward to encapsulate into an ae with no afteraffects
> elsewhere in babel.
>
> https://datatracker.ietf.org/doc/html/draft-pfister-bier-over-ipv6
>
> 4096 bits (maximum requirement for bier), on the other hand, breaks
> everything (babel mtu requirement while still fitting in everything
> else),
>
> while (the minimum requirement) of 256 bits may well look a lot like
> how the new source specific ae is formed.
>
> if there are other docs in that wg worth reading, running code on
> linux, or other use cases, please point me at em!
>
> > As David mentioned, some of us would feel much more comfortable if there
> > were a prototype implementation before we are asked to adopt your draft.
> > I would be interested in helping, but I have neither the competence nor
> > the manpower to do the implementation on my own.
> >
> > -- Juliusz
> >
> > _______________________________________________
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> > babel@ietf.org
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>
>
>
> --
> Dave Täht
> Let's go make home routers and wifi faster! With better software!
> http://blog.cerowrt.org
>
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