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How to find half duplex or full duplex

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Operating Systems Solaris How to find half duplex or full duplex
# 1  
Old 11-23-2009
How to find half duplex or full duplex
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.
rogerben
# 2  
Old 11-23-2009
try:

dladm show-dev (you need root priv probably)


this is the output I get:

Code:
~> 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 ----------

or to do it your way it would be
(say your interface is qfe0)

Code:
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

Code:
# ndd -get /dev/qfe link_mode

Interpretation:
0 -- half-duplex
1 -- full-duplex

Code:
# ndd -get /dev/qfe link_speed

Interpretation:
0 -- 10 Mbit
1 -- 100 Mbit
1000 -- 1 Gbit



Forgot the setting part:

Code:
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 Smilie
download:
http://sourceforge.net/projects/gkernel/
info:
http://gd.tuwien.ac.at/linuxcommand..../ethtool8.html
Last edited by DukeNuke2; 11-23-2009 at 10:26 AM.. Reason: add info
This User Gave Thanks to ippy98 For This Post:
samnyc
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