> What does entstat say about the duplex setting?
>
> It's fairly common for managed switch ports to be fixed at 100Mb/s full
> duplex. If this is the case the setting in AIX has to match. If AIX is set
> to autonegotiate it'll end up at 100Mb/s half duplex. If it shows as half
> duplex, try changing it to fixed 100Mb/s full.
>
> Regards, Ian

If this is the case and you changed it and it is still slow (So Ian has
a very good point!) then you colud also if you have a 1Gb card, change
the settings for the ent device:

Enable hardware TX TCP resegmentation yes

Enable hardware transmit and receive checksum yes

Change it to NO then ! (both off them) depending on your network
environment (check with the network guys)