[Babel-users] Fwd: Why we switched to Babel

[Saverio Proto]

Thanks for clarify :) The initial email was confusing.

I hope to be again at the battlemesh next year.

Have fun and send my greetings to all.

Saverio
Il 08/ago/2015 13:17, "Juliusz Chroboczek" <jch at pps.univ-paris-diderot.fr>
ha scritto:

> Hi Saverio, long time no hear.  Pity you're not here.
>
> > So why they switched to babel ?
> > babel makes some magic with MTU ?
>
> Nope.
>
> The way I understand it, they had trouble with BATMAN's encapsulation in
> a heterogeneous network (were it is difficult or impossible to increase
> the link-layer MTU to 1532).
>
> Recall that:
>
>  1. BATMAN adds 32 octets of overhead to every frame;
>  2. BATMAN requires the same MTU on all segments.
>
> The result is that if you have just one segment that cannot increase the
> link-layer MTU beyond 1500, you need to run your mesh with a network-layer
> MTU of 1468.  Apparently that is the situation they found themselves in,
> and were unable to get it to work reliably.
>
> From what I gather, they're a community with unusual needs (strong emphasis
> on decentralision and privacy, heterogeneous hardware, diverse userbase,
> etc.), they're probably run into some snags with Babel too.  Which should
> be interesting, and likely to improve Babel.
>
> Time to do some testing, see you later.
>
> -- Juliusz
>
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