dan> So, all 3 machines seem to work, its just that the sparc and pc
    dan> don't like each other!

    dan> The physical connection is

    dan> mac: BNC connector on ethernet card goes to a bnc T with
    dan> termination on one side and coax on the other.

    dan> pc: 10Base-T goes twisted pair into an ethernet hub whose BNC
    dan> connector goes to a BNC-T.  One side of the T goes towards the
    dan> mac, the other towards the sparc.

    dan> sparc: uses the on board ethernet adapter.  Driver is le0.
    dan> Goes through a AUI to BNC tranceiver.  The BNC connector goes
    dan> to a T which is terminated on one end and goes to a cable to
    dan> the hub on the other.

this sounds a lot like the kind of weird problems you can get when
thinnet cables/connectors/terminators aren't quite right.  strange
properties of transmission lines and such.

you might want to try replacing bits of the bnc stuff to see if that
helps, or changing the topology to see if it affects the problem.

matt
-- 
matt debergalis <deberg@mit.edu> KB1CTH
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