how to check out the network adapters for errors and network performance

entstat -d ent1 --> 10/100 PCI 23100020

0 CRC
0 alignment
media speed 100 Full selected and running
0 No Receive Pool Buffer errors
The adapter looks good.

ftp to another machine

login

bin

put "|dd if=/dev/zero bs=32k count=100" /dev/null

between 7 and 8 MB/sec which is good.

lscfg -vl ent0   --> dv210 microcode  --> latest microcode

lslpp -l |grep 14108902  --> 5.3.0.50  --> latest device driver