[eepro100] Speed and Duplexing, Once Again

Danish Mirza danish@lehman.com
Thu Oct 17 17:26:01 2002

Thanks for getting back to me so quickly.
Yes you are right about the eepro100.

So now Im using tg3 drivers to work with gige.
I've configure the box to come up on the network.
I even forced the the interface using ethtool command:
ethtool -s eth0 autoneg on speed 1000 duplex full

Then I use the mii-tool -v to show the speed it shows:

[root@host1 root]# mii-tool -v
eth0: negotiated, link ok
  product info: vendor 00:08:18, model 22 rev 2
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

It shows 100baseTx-FD.  Can mii-tool handles gige speeds ?
Do we have another utility by you to check the status.



On Thu, 17 Oct 2002, Donald Becker wrote:

> On Thu, 17 Oct 2002, Mirza, Danish wrote:
> > can u tell me how to setup eepro100 to work on gige network ?
> The eepro100 NICs only work at 10Mbps and 100Mbps.  They will not work
> at gigabit speeds.
> If the gigabit switch senses or negotiates the speed and duplex (most
> switches do), everything will work automatically.
> > do we have to put some parameters in /etc/modules.conf like we do to make it
> > 100 FULL.
> This is a great example of why forcing the speed and duplex to 100-full
> is a very bad idea.
> If you swap cables to a gigabit switch, your duplex will be mismatched.
> If you then force the gigabit switch link to 100-full, an upgrade to a
> gigabit card will be slow, and perhaps have a freshly-mismatched duplex.
> > This message is intended only for the personal and confidential use of
> > the designated recipient(s) named above.
> Any post to a public mailing implicitly grants us permission to publish
> the question and response.
> --
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