From IBM announcement letter:
5700 /5701 Limitations
Half Duplex (HDX) mode is not supported at the 1000 Mbps speed on either
From "Kernel Extensions and Device Support Programming Concepts"
The media speed attribute indicates the speed at which the adapter will attempt
to operate. The available speeds are 10 Mbps half-duplex, 10 Mbps full-duplex,
100 Mbps half-duplex, 100 Mbps full-duplex and auto-negotiation, with a default
of auto-negotiation. Select auto-negotiate when the adapter should use
auto-negotiation across the network to determine the speed. When the network
will not support auto-negotiation, select the specific speed.
1000 MBps half and full duplex are not valid values. As per the IEEE 802.3z
specification, gigabit speeds of any duplexity must be auto-negotiated for
copper (TX) based adapters. Please select auto-negotiation if these speeds are
I hope that's help you
PS: demande a ton voisin avant, la procha?ne fois
philippe a crit :
> I've got a pSeries with a 10/100/1000 ethernet card, and the attribute
> "media_speed" is on Auto_Negotiation".
> When I run "lsattr -R -l ent0 -a media_speed", the result is :
> Then I can't force the card to 1000 or 1000_Full_Duplex or somethng else...
> If I run "chdev -P -l ent0 -a media_speed=1000_Full_Duplex", I've got an
> Somebody has a solution ?
> Thanks a lot