Hi Dan and Wan

I can confirm that we are seeing at least some of the problems with another ROACH board as well. This time it is connected directly to a computer with a short CATY5 cable.

So maybe this indicates that it is less likely to be a hardware problem? Incidentally, the error message that happens when attempting to download a large file over sftp is "Corrupted MAC on input".

cheers

Kjetil

Dan Werthimer wrote:
hi wan,

i don't know of anyone who has roach ethernet
problems at 100 Mbit/sec.

i'm cc'ing casper community to see if anyone has any ideas.
in general, it's good to post questions to cas...@lists,
so that everyone can help answer, and everyone can see the answers,
and the info will be captured in the wiki/email archive.

if you want you can buy or ask digicom if they can send you
another national PHY chip and see if this helps.

also you might want to try using short cable, and/or a cat6 cable.
is your roach connected directly to a computer, or going
through a switch?  might be interesting to try a different NIC
or different switch or different computer.

best,

dan


On 10/29/2009 02:47 PM, wan.ch...@csiro.au wrote:
Hi Dan:

I believe you have done a very nice job.

My problem is Ethernet port is not very reliable. Even running at 100MHz, the 
Ethernet port will be disconnected at some times. Normally, it can resume after 
reboot whole system.

And I could not transfer big file through ethernet. Small files like a few MB 
are all right. But I could not download 1GB file from Roach at all.

So Dan, could this problem be solved by replacing the on board PHY?

Thanks

Wan



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