Hi,
How to find whether the server is running with half duplex or full duplex. I tried with the following command ndd -get /dev/ but am not getting any output,. Is the command correct?
Also let me know how to change from half to full duplex.
try:
dladm show-dev (you need root priv probably)
this is the output I get:
~> sudo dladm show-dev
hme0 link: unknown speed: 0 Mbps duplex: unknown
qfe0 link: unknown speed: 100 Mbps duplex: full
qfe1 link: unknown speed: 0 Mbps duplex: unknown
qfe2 link: unknown speed: 0 Mbps duplex: unknown
qfe3 link: unknown speed: 0 Mbps duplex: unknown
---------- Post updated at 12:32 AM ---------- Previous update was at 12:28 AM ----------
[/COLOR]or to do it your way it would be
(say your interface is qfe0)
ndd -set /dev/qfe instance 0
ndd -get /dev/qfe link_speed
ndd -get /dev/qfe link_mode
then your output will only be a 0 or 1
# ndd -get /dev/qfe link_mode
Interpretation:
0 -- half-duplex
1 -- full-duplex
# ndd -get /dev/qfe link_speed
Interpretation:
0 -- 10 Mbit
1 -- 100 Mbit
1000 -- 1 Gbit
Forgot the setting part:
ndd -set /dev/qfe adv_autoneg_cap 0 #autoneg off
ndd -set /dev/qfe adv_10hdx_cap 0 #10M half duplex
ndd -set /dev/qfe adv_10fdx_cap 0 #10M full duplex
ndd -set /dev/qfe adv_100hdx_cap 0 #100M half duplex
ndd -set /dev/qfe adv_100fdx_cap 1 #100M full duplex
OR
you can make it all easier, and just get ethtool 
download:
info:
http://gd.tuwien.ac.at/linuxcommand.org/man_pages/ethtool8.html
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