On Tue, Aug 01, 2006 at 04:03:28PM +0400, a1 wrote: > He, Jeff. > > Thank for quick reply. > > JK> On 8/1/06, a1 <[EMAIL PROTECTED]> wrote: > >> I'm trying to set my nic to force 100Mb/FD, but I'm constantly getting > >> 100/HD on > >> other side of the link. > >> > >> The command is: > >> ethtool -s eth0 speed 100 duplex full autoneg off > >> > >> e1000 driver version 7.1.9 (latest) downloaded from sourceforge. > >> > > JK> What are you linking to? And what is the link partner set to? > I am linking to my 3com gigabit ethernet switch. And it shows > 100Mbit/halfduplex. > > JK> If one link partner is set to auto-negotiate, and the other partner > JK> forced, it is common to see this issue no matter what the two link > JK> partners are. > I thought the common behavior is that if one side force any particular > parameter, other side should "sense" that and go to that mode too. > > In current case there is misunderstanding - one side (linux box) > reports 100/FD and other (switch) reports 100/HD. > > Maybe I don't understand something... >
Jeff it correct, but the behavior can change depending on the switch hardware. The results you see are expected since I'm quite sure the IEEE standard says that a device should default to half-duplex when auto-negotiation fails (which is why your 3com switch defaults to half-duplex). -andy - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
