What needs to be done - HP TCP/IP tuning when converting from ATM the GB ethernet

[PETER GRIFFIN]

The network between a HP client and a SUN server was recently changed from ATM to GB 
ethernet.

Since that conversion the rate of transfer  for the backups has become ridiculously 
slow.

We have yet to prove that the change of network topology is the cause though  it is 
the obvious place to start.

Can anyone offer any suggestions how to check if the IP config on HP  is tuned for ATM 
and what would the appropriate settings for ethernet.

The HP box is a HP 9000 K class

Thanks

Peter Griffin
Sydney Water