UNIX for Dummies Questions & Answers

How do I change the NIC from 100 full-duplex to autonegotiate?

When tyring to find out what the status link on the NIC I receive an error message
ndd /dev/hme
Couldn't push module 'hme', no such device or address
cd /dev
ls -l hme
lrwxrwxrwx 1 root other hme->../devices/pseudo/clone@0:hme

What is my problem, I can't change my nic card to autonegotiate
?

The following script force (in solaris) the NICs to 100 MB FD, you need to changes the values (I prefer to force servers and switchs to 100 MB FD):



#!/bin/ksh
state=$1

case $state in

'start')
ndd -set /dev/tcp tcp_time_wait_interval 60000
DEVICE="hme qfe"
for i in $DEVICE
do
INSTANCE="0 1 2 3"
for x in $INSTANCE
do
ndd -set /dev/$i instance $x
ndd -set /dev/$i adv_autoneg_cap 0
ndd -set /dev/$i adv_100T4_cap 0
ndd -set /dev/$i adv_100fdx_cap 1
ndd -set /dev/$i adv_100hdx_cap 0
ndd -set /dev/$i adv_10fdx_cap 0
ndd -set /dev/$i adv_10hdx_cap 0
done
done
;;
'stop')
;;
esac


Note: To get the values "ndd -get ...".

Note: I believe that Autonegotiation is the default in Solaris.

Regards. Hugo.

That script is rather brute force and it doesn't really answer the question. Cassy want to autonegotiate.

Cassy, that error message means that the hme driver is not loaded into the kernel. Hopefully, this is because you don't have an hme card. To find out what you do have, use:
netstat -in
and look at the first column, which is "Name". Ignore the lo0 interface, that is a loopback that enables the box to send tcp/ip to itself. Any other lines are actual interfaces. If you actually have a "hme0" or "hme1" or something, I'm going to very confused given that error message.

I guess I'll assume that you have a "qfe0". (Note that if you have a "le0", you have a very old card that can only do 10/half-duplex.)

To see the speed on qfe0, do:
ndd -set /dev/qfe instance 0
ndd -get /dev/qfe link_speed

With qfe a "1" means 100 and a "0" means 10. But each driver is a little different, this may not hold true for other cards.

Also,
ndd -get /dev/qfe \?
will show all the parameters in the qfe driver.

One of them is "adv_autoneg_cap". This controls whether or not the card is advertising autonegotiate.

Another is "lp_autoneg_cap". This is read-only but it shows you if your link partner has advertised autonegotiate.

It's true, the script don't do that you ask.

Sorry to both. Hugo