Determining the speed of the network card

[sambols]

What is the command to show the speed of the network card?
I am running GNU bash, version 2.05.8(1) - release.

[northlandboy]

Use ethtool, or mii-tool. Bash won't help you, it's just a shell, for running commands.

[abusharif]

As a side note if memory serves me well, mii-tool doesn't support display of gigabit interface only 10/100 unless it is recently changed and new version added splat.

[northlandboy]

Yeah, sometimes one works and not the other...working on a box this morning, where mii-tool works on some interfaces, ethtool works on all of them.

[Expert@fw]# mii-tool eth4
SIOCGMIIPHY on 'eth4' failed: Operation not supported
[Expert@boss]# ethtool eth4
Settings for eth4:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: umbg
Wake-on: d
[Expert@fw]#

[stuartgreen]

ifconfig -a

this should show you all interfaces in the machine and what speed they are currently configured at

[northlandboy]

Originally Posted by stuartgreen

ifconfig -a

this should show you all interfaces in the machine and what speed they are currently configured at

On IPSO, yes, but not on Linux - at least not with the SPLAT boxes I've got in front of me.