Configuring your NIC: Speed and Duplex settings

November 18, 2005

Have you ever wanted to find out what speed/duplex your network card negotiated to? mii-tool is the tool for you.

List NIC speed and configuration: mii-tool
eth0: negotiated 100baseTx-FD flow-control, link ok
Verbose mode: mii-tool -v
eth0: negotiated 100baseTx-FD flow-control, link ok
product info: Intel 82555 rev 4
basic mode: autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

Check out YoLinux Tutorial – Linux Networking for more great tools.

Transform your business without wasting money.

We help you identify, audit and implement technology changes within your business to create leverage points to scale your company faster.