Hi! I'm new to UBUNTU!

[Maurice McCarthy]

Jorge,

There is a command mii-tool (media independent interface) which gives
you information on both network interfaces. The -v means verbose

mii-tool -v

eth0: negotiated 100baseTx-FD flow-control, link ok
  product info: vendor 00:07:32, model 17 rev 2
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 1000baseT-HD 1000baseT-FD 100baseTx-FD 100baseTx-HD
10baseT-FD 10baseT-HD flow-control

But all l'm doing is fishing for useful info. There is 'ethtool eth0'  also

Maurice