Hello,

How I can check/change my networkcard's duplex option.
I'm using RH9 and my network card is 3Com PCMCIA 3C589D-TP (10Mbit)

I have tried with mii-tool. but it gave strange error message.

[root@fw-2 root]# mii-tool eth1
SIOCGMIIPHY on 'eth1' failed: Operation not supported

Have you tried the ethtool command? mii-tool uses an older ioctl interface which has been supersded by a generic MII library for the MII-supporting network drivers. man 8 ethtool will tell you more.

ethtool tells nothing ??

[root@fw-2 root]# ethtool eth1
Settings for eth1:
No data available

[root@fw-2 root]# ethtool eth0
Settings for eth0:
No data available

What is wrong in my system?
Why ethtool doesn't tell anything??

mii-tool reports everything about eth0 but not eth1
eth0: negotiated 100baseTx-FD, link ok
SIOCGMIIPHY on 'eth1' failed: Operation not supported

My eth0 network card is 3Com 3CCFE575CT 10/100 PCMCIA

You really ought to read the ethtool man page; the thing is a veritable Swiss army knife of switches and arguments. The only dependency is driver support.

I tried almost everyting.


[root@fw-2 root]# ethtool -s eth1 duplex half
Cannot get current device settings: Operation not supported
not setting duplex

[root@fw-2 root]# ethtool -s eth1 duplex full
Cannot get current device settings: Operation not supported
not setting duplex

[root@fw-2 root]# ethtool -s eth1 port tp
Cannot get current device settings: Operation not supported
not setting port

[root@fw-2 root]# ethtool -s eth1 port mii
Cannot get current device settings: Operation not supported
not setting port

[root@fw-2 root]# ethtool -g eth1
Ring parameters for eth0:
Cannot get device ring settings: Operation not supported

[root@fw-2 root]# ethtool -k eth1
RX/TX checksumming parameters for eth1:
Cannot get device rx csum settings: Operation not supported
Cannot get device tx csum settings: Operation not supported
Cannot get device scatter-gather settings: Operation not supported
no checksumming/SG info available

[root@fw-2 root]# ethtool -t eth1
Cannot test: Operation not supported

The only command which gives answer without error message:

[root@fw-2 root]# ethtool -i eth1
driver: 3c589_cs
version: 1.162
firmware-version:
bus-info: PCMCIA 0x300


I just wonder, why this ethtool doesn't work either with my other network card.

I guess the other network card's driver doesn't support feedback with ethtool.

howzit

with mii-tool u need to put in the option that says -F e.g mii-tool -vF 100BaseTx-FD this should work. This will force it to be what setting u want and not auto.

chow

.my error

hi i have one question with doubt

i have NAT server in linux as a 3 nic with ip of

eth0:192.169.*.*

eth1:172.19.*.*

eth2:10.186.*.*

eth1 ip is have full internet access and NATed to eth0 and eth2

my fileserver is in 192.168.*.*

i need to (from client machine 10.186.*.* series) connect filesever.

but i cant....

give the solution for NAT ing side or IP roue side....


regards
Prakash.M
chennai

Unfortunatelly one of my network cards is pcmcia and I cannot use ethtool, to read if its in full duplex by default.

I'm trying to figure out why my samba is so slow and ~4GB files transfer was calculated to more than 3h (by a wire), via ftp ~45min.

Isnt the FD tag Full Duplex?
Maybe you can plug in another computer, a managed switch or a router to the other end and see if it negotiated full or half duplex?
Though I havent seen a NIC that didnt support full duplex in ages.

It is not too rare to see a duplex "miss-negotiation" between two devices.

OK OK this thread was started SIX YEARS AGO. Closed to preserve sanity.