[OLPC Networking] TCP is broken in mesh mode
abelits at phobos.illtel.denver.co.us
Thu Jun 12 22:21:36 EDT 2008
On Wed, 11 Jun 2008, Trent Lloyd wrote:
> Keep in mind however that the other traffic, i.e. discovering the
> other XO is a multicast packet and therefor would be routed on the
> mesh somewhat differently AIUI (its basically re-broadcasted by every
> Thus I suspect the issue is the nodes simply have no direct
> communication at all given the lack of replies to the ARP packets..
> and any "other" tcp or ping is not going ot work if arps simply aren't
> being replied to, as ARPs are in no way specific to the connection type.
> Thus I suspect the issue is that multicast forward is working (which
> seems perfectly sane mentally, given what I know as the difference
> between how unicast and multicast work on the mesh) but the direct
> node-node path is totally broken and this would be a relatively
> pointless excercise.
> I guess getting the mesh neighbour tables per Bill's email would be
> the most useful step forward.
And arp tables, that will give the idea if ARP responses were received and
used to correctly update the tables.
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