Change speed on network card


 
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Operating Systems Solaris Change speed on network card
# 1  
Old 07-10-2007
Change speed on network card

I recently learned that Sun Solaris network cards (ce devices) have problems with ndd -get commands. I did some searching and found out about the netstat -k command to show me the link speed. What is the best way to change the link speed (both one time and permanently)?

I am running Solaris 9

thank you
# 2  
Old 07-10-2007
ndd commands work fine on ce nics....
use this script for permanent settings:
http://docs.cirkva.net/Sun/Solaris/Eis/S68net-tune
# 3  
Old 07-11-2007
Ndd

Thank you for the script. The ndd -get command on the CE device had difficulties. I got an "invalid argument" error.
I did: ndd -get /dev/ce link_speed
# 4  
Old 07-11-2007
Quote:
Originally Posted by hshapiro
Thank you for the script. The ndd -get command on the CE device had difficulties. I got an "invalid argument" error.
I did: ndd -get /dev/ce link_speed
you have to enter the instance number....
# 5  
Old 07-11-2007
Ndd

I tried:
ndd -get /dev/ce0 link_ststaus
failed: No such file or directory
ndd -get /dev/ce link_status
Invalid argument

There is no /dev/ce0. The device is definitely ce0 though.

There are numerous articles about ndd not working with ce devices. here is one that I found:
Q We're installing a number of Solaris 8 boxes on our LAN, and we want to verify that the speed and duplex on the switch match that of the Sun network interfaces during auto-negotiation. If we have to, we'll explicitly set both sides and turn off auto-negotiation. These machines have ce0 interfaces, but ndd doesn't seem to be useful here. I tried:


ndd /dev/ce link_status
ndd /dev/ce link_mode
ndd /dev/ce link_speed

The link_speed shows up as 0. That doesn't seem to be meaningful, since it only seems to have a value of 0 or 1, and there are more than two speeds available. Is there another variable I should be looking at with ndd, or does link_speed have more than a 0/1 setting?
A The ndd command doesn't work with ce interfaces. Use the -k switch to netstat to obtain the information you're looking for:


netstat -k ce0 | egrep 'link_speed|link_status|link_duplex'

The output has the following meaning:

link_up - 0 down, 1 up
link_speed - speed in Mbit/s
link_duplex - 1 half duplex, 2 full duplex, 0 down
# 6  
Old 12-26-2007
hmm

i tried running netstat -k on a blade 150 running sol10 08/07 and error said illegal option...any thoughts?
# 7  
Old 12-26-2007
I haven't got a system to hand, but before doing
ndd -get /dev/ce link_status
you have to do
ndd -set /dev/ce instance 0

(I hope I've got the syntax right!)

You can also use a ? instead of an option, to list all og the available options, eg.
ndd -get /dev/ce ?

In the good old Solaris way, some cards allow you to set things via the system file, but others don't.
So I think that the ndd route is the only consistent one.
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