>Is autonegotiation also about detecting cross-over vs. straight connection ? 
>Any link ? I thought it was about half/full duplex and speed.

It is. There are different sources stating different things... I feel like 
someone hast to read the standards on that...

At least I tried myself and found this quote from 
http://en.wikipedia.org/wiki/Ethernet_over_twisted_pair true:

"If both devices being connected support 1000BASE-T according to the standards, 
they will connect regardless of the cable being used or how it is wired."

I found no clear statement that confirmed or denied that this has to do with 
the mandatory auto-negotiation or if there's some magic of a different name 
working.

So I now prefer not to keep that statement up, I'm not sure if a gigabit port 
will connect to a less-than-gigabit port trough a straight cable.

Greets,
Kiste


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