Determine the ethernet (NIC) card speed.

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# 1  
Old 04-07-2011
Determine the ethernet (NIC) card speed.


Does anyone know how can I determine the maximum capable speed on a network interface card for different OS like HP, Sun, AIX and Linux.
I am aware of the tool "ethtool" which can be used for Linux. Are there any handly commands or /proc files where I can get this info depending on the OS. Thanks
# 2  
Old 04-07-2011
On Solaris 10 you can use dladm show-dev, which will show for all the NICs if they are up, their speed and duplex. On Solaris 9 and older, you have to use ndd. For example: ndd -get /dev/nge0 link_speed
# 3  
Old 04-07-2011
how can I determine the maximum capable speed on a network interface card
The only way I know is to look up the manufacturer's specification for the hardware and compare with the specification for the drivers supplied with the Operating System.
Using manufacture-specific unix commands you can find out the current configuration (if there is one) of each Ethernet card but not the full capabilities.
# 4  
Old 04-19-2011
ethtool eth0

entstat -d ent0

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