Hi dan, I have some questions on the mesh network for the updates work. What is the broadcast domain for a laptop on the mesh? (I.E. how far are broadcast messages sent)? Is it just the set of nodes reachable from your machine, or are broadcasts forwarded by the mesh?
This affects how avahi works, as avahi only uses local broadcasts. Another question is on multicasts. How many hops do multicast packets live on the mesh? And are there any other limits than nr of hops to avoid multicast loops? (Otherwise its likely that nodes see multicast packages many times, especially in dense networks.) I read on the olpc wiki about the mesh using three different channels. My understanding on this is that these pretty much generate three separate mesh networks that are routed between by the school server, and that laptops can end up on any channel. Does this mean that two laptops next to each other can be on two completely different networks? This means broadcasts (and by extension Avahi) cannot reach from one laptop to the other. Is this true? And are we doing something to work around this (like letting users manually switch channels)? _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
