[Babel-users] Open-Mesh migration, 802.11s, babeld, speed degradation

[Stuart Trusty]

Hi Juliusz,

Yes, I can see your point.  However, I am just using 802.11s for the LAN
traffic to gateways.  Some of these 802.11s devices may themselves be
gateways.  Their own gateway may only be good as a fallback gateway for
rest of the mesh, and just making a gateway node force a client's DHCP
through its own gateway is not exactly the effect I want to achieve with a
performance monitoring protocol.  Besides, a gateway may come and go, and I
may want to enforce this cost feature to determine best path out.  I know
this was solved using batman-adv on the pre-existent OpenMesh firmware,
this dynamic announcement of gateways.  I want to use babeld as kind of a
higher layer of routing on top of a single instance of 802.11s on the
router LAN to achieve the same effect.

Thank you for your consideration.



On Wed, Mar 6, 2019 at 7:05 AM Juliusz Chroboczek <jch at irif.fr> wrote:

> > Yes, in this situation all neighbor stations enumerate.   Everyone can
> ping
> > everyone via 802.11s mesh.
>
> You're running Babel over an 802.11s mesh?  Why?
>
> Both Babel and 802.11s are routing protocols (more exactly, 802.11s
> contains a routing protocol).  Running both in the same mesh is redundant.
>
> > However, now that it is running on the wlan0 that is a bridge of wlan0-1
> > and wlan0, it just seems boring; I don't see those fancy routing tables,
> > and I am not seeing that it is establishing the shortest route based on
> > prevailing network conditions, I am see only metrics passed of 0, 128,
> > and 65535.
>
> This is expected.  The 802.11s mesh is doing its thing, and Babel sees the
> mesh as a single hop.
>
> If 802.11s works for you, then please use that.  If it doesn't, then
> please tear down the 802.11s and use Babel.  It is pointless to run both
> 802.11s and Babel on the same network.
>
> -- Juliusz
>
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