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Authored by: ajoakland on Jul 09, '03 11:45:55AM


You must be careful with auto-negotiate. One person said things must be auto-neg on both ends (mac & switch). This typically causes many problems. Only one end (client OR the switch) NOT both can be auto-negotiate. Non-compatible NIC and switches/hubs/routers will get into an continuous auto-neg handshake that will KILL your throughput.

ALSO, full-duplex is only good if you have a high quality infrastructure. If the datalines sitting in your walls are not "perfect" your full-duplex setting could cause so many errors, that you performance drops to NIL. I tend to FORCE 100Half-Duplex, and avoid most problems.

Servers, in server-rooms, with short cable runs to their switch, can usually handle the 100Full. (assuming the hardware involved allow it)

Summary: go ahead and push things to 100Half, then on a machine by machine basis, attempt 100Full, checking for throughput. Under no circumstances have Auto-Neg on both ends.


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