On Wed, 18 Oct 2006, Rick Jones wrote:

> > I believe, but need to double check, that if I leave the BCM5461 in
> > autoneg, and foce the switch to 10M/full that the BCM5461 will  autoneg at
> > 10M/half duplex.
> 
> Indeed, if one side is hardcoded, autoneg will "fail" and the side trying to
> autoneg is required by the specs (not that I know chapter and verse to quote
> from the IEE stuff :( to go into half-duplex.

 Rather than forcing a PHY into 10Mbps, you may limit its advertised list 
of speeds/duplex settings and let autonegotiation do the rest.  It depends 
on how smart code to manage your switch is; it's certainly doable with 
Linux (you can do it with `mii-tool'; not sure about `ethtool') as long as 
the NIC driver supports the necessary ioctls.

> Was 10M/Fullduplex ever standardized?  If not I could see where kit might not
> be willing/able to autoneg to that.

 It is standard.

  Maciej
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