[OLPC Networking] Mesh multicast support

[Krishna Sankar (ksankar)]

Good question. 

>From my limited knowledge, the mesh is more or less transparent - i.e.
the 802.11s routing protocols use mesh algorithms; but the routed
protocols, over the 802.11s, could be anything. 

But this raises a good point - may be we want to restrict multicast by
partitioning the network to small domains as well as keep a lid on the
number of multicast messages. There is a finite possibility that
multicast could drain the resources if not contained properly. OTOH,
because of the underlying mesh topology, multicast might not be as
costly as it seems.

Trent, I assume you are exploring Avahi for OLPC. I did look into it and
looks like it should work without any problems; except the partitioning
aspect. (An waiting for my modules to actually test this) If the whole
network (or some big superset in a domain) is a giant mesh, while it is
good in terms of visibility of services, end points et al, it could
cause lots of routing overhead basically draining the power.

Cheers
<k/>

 

> -----Original Message-----
> From: networking-bounces at laptop.org 
> [mailto:networking-bounces at laptop.org] On Behalf Of Trent Lloyd
> Sent: Monday, January 22, 2007 6:21 AM
> To: networking at laptop.org
> Subject: [OLPC Networking] Mesh multicast support
> 
> Howdy all,
> 
> I'd like to know what support the mesh wireless is going to 
> have for multicast, i.e. will it broadcast it, or will it 
> currently forward packets only to the right part of the mesh 
> using something similar to IGMP?
> 
> Cheers,
> Trent
> _______________________________________________
> Networking mailing list
> Networking at laptop.org
> http://mailman.laptop.org/mailman/listinfo/networking
>