Computers are communicating but can't link

Hello,

For school, i'm trying to do clustering with openmosix.
We took kernel sources 2.4.26 and we patched it with
openmosix patch. We chose the different openmosix options
before compiling it.
It was done on a P4 and an Athlon
After rebooting, the computers were seeing each other
and openmosix test tool was working, dispatching load
between these 2 computers (in autodiscovery mode or
in static mode with a .map file).

I just want to say that these machines are linked thru
switches and there's no routers in-between)

After, we tested with other computer (3 or 4).
We couldn't make it working (in static or in autodiscovery)
These machines were linked in a cluster and we couldn't join it.
Computers are talking to each other but cannot associate
(except our 2 first computers).

A strange thing is that in 'mosmon' tool (in autodiscovery mode)
we can see other computer but they disappear after a
short time. In openmosixview, they are in red (down)
We checked that there wasn't any iptables rules
blocking openmosix data.
We also tested with a precompiled kernel from openmosix (still 2.4.26)
without success.

Then i fired up ethereal to see data packets and analyse it.
Openmosix UDP packets from and to our 2 computers are about 48 bytes
and packets between our machine to the others are a little bit greater
than 200 bytes.
What is strange is that our machine send data to these machine and
they aren't associated in the cluster.

Can someone help me about it?

Thomas


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