Mesh networking: olsrd? b.a.t.m.a.n.? OpenWRT?

[Tom Buskey]

Didn't the One Laptop Per Child project do mesh?

On Wed, Feb 25, 2015 at 1:17 PM, Joshua Judson Rosen <rozzin at hackerposse.com
> wrote:

> On 2015-02-20 09:17, Curt Howland wrote:
> > On Thu, Feb 19, 2015 at 5:20 PM, Patrick Flaherty <pflaherty at wsi.com>
> wrote:
> >> If you do get it working, it would be a great talk at a meeting.
> >
> > Agreed.
> >
> > Mesh networking is interesting, but the implementations appear
> > difficult to impossible at best.
>
> That... may actually not be the case anymore....
>
> When I posed the initial question, I was really sort-of grasping
> for any leads; but now I've learned enough to at least identify
> the different options, pick one, and even get one working.
>
> It looks like the prime contenders for mesh mechanisms are
> (roughly ordered in accord with the evolutionary timeline):
>
>         - layer-3 OLSR mesh via olsrd
>         - layer-3 B.A.T.M.A.N. mesh via batmand
>         - layer-2 B.A.T.M.A.N. mesh via batman-adv
>         - layer-1(!) mesh via 802.11s
>         - layer-3 B.A.T.M.A.N. mesh via bmx
>
>
> The 802.11s mesh turns out to be remarkably easy to get up and running,
> following the HOWTO provided by open80211s project:
>
>         https://github.com/o11s/open80211s/wiki/HOWTO
>
> (how well it works is yet to be seen)
>
>
> batman-adv appears to be more generalised than 802.11s:
> batman-adv can be used to aggregate any collection
> of layer-2 interfaces--including Wi-Fi (in infrastructure mode,
> ad-hoc mode, or any other mode), wired ethernet, PPP links,
> VPN links--where 802.11s (of course) can is usable only with
> 802.11 links (and then only with some chipsets).
>
> Presumably 802.11s and batman-adv are the most transparent
> options, since the other (layer-3) options rely on rearranging
> the *IP* route tables....
>
> It's still not yet obvious to me what to do about mobile nodes
> moving between the mesh nodes at speed--i.e., just how quickly
> the mesh can deal with the topology changing (or what knobs are
> available for tuning that), or if it makes sense to include
> traditional APs in the mix so that the roaming nodes just do
> traditional client dissociation/association cycles, or how
> to handle roaming nodes that aren't equipped to do mesh networking
> themselves.....
>
> --
> "Don't be afraid to ask (λf.((λx.xx) (λr.f(rr))))."
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