Lower LAN speed to 10Mbit/s

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1

I am using a Linksys USB200M (with AX88772 chip) USB to LAN stick to
connect my beagleboard to the internet. When I connect a lan cable it
will establish a 100Mbit link, but I would link to lower it to 10Mbit
to save some power.

I have read that it is possible to lower the link speed with the
utilities 'ethtool' or 'mii-tool', but these are not available to
angstrom.

Has anybody successfully build and used 'ethtool' or 'mii-tool' with
angstrom?
Or is there an other way to lower the link speed?

Regards,
Quist

2

Please ignore my post!

I was looking for the utilities at http://www.angstrom-distribution.org/repo/
and didn't find it, but I have found it in OpenEmbedded...

Quist

3

I am using a Linksys USB200M (with AX88772 chip) USB to LAN stick to
connect my beagleboard to the internet. When I connect a lan cable it
will establish a 100Mbit link, but I would link to lower it to 10Mbit
to save some power.

I was looking for the utilities at

http://www.angstrom-distribution.org/repo/

and didn't find it, but I have found it in OpenEmbedded...

Hi Karsten,

Did you make this work?
And in given case how did you end up configuring the Ethernet?
And how much current could you save?
  Søren

4

Hi

I ended up using ethtool, and it worked fine. I changed the speed to
10Mb/s and half duplx, in an attempt to same most power as possible.

I do not remember the specific numbers but when I changed the setting
the current draw was increased. I didn't look further into it, I just
left it at 100Mb/s...

Have you give it a try?

/Quist

5

Hi Karsten,

I ended up using ethtool, and it worked fine. I changed the speed to
10Mb/s and half duplx, in an attempt to same most power as possible.
I do not remember the specific numbers but when I changed the setting
the current draw was increased. I didn't look further into it, I just
left it at 100Mb/s...

I haven't tries it, but thought I would hear your result before spending
time trying it. :slight_smile:

I as well would like to save a little power (if possible) and hoped this
would be an valid path forward
- Apparently not :slight_smile:

Thanks for sharing your results
  Søren