On May 9, 2007, at 10:40 AM, Chris Buechler wrote:
Alexandre Blardone wrote:
Hello,
I'd like to force 100Mbps full duplex on my WAN interface,
I know i have to add the following in the config file for the WAN
interface section
<media>100baseTX</media>
<mediaopt>full-duplex</mediaopt>
<bandwidth>100</bandwidth>
<bandwidthtype>Mb</bandwidthtype>
Is that all i have to do ?
If you're going to force, you have to force whatever device your
WAN port is connected to (switch, modem, router, or...) or you'll
end up with a duplex mismatch. You usually don't want to force
speed and duplex, no networking vendor recommends this practice
anymore though it's commonly ingrained in some people's heads
because when autoneg was first introduced it didn't always work
well. This is 2007, not 1997, you almost always want to use auto.
My ISP requires to force full duplex for the 40Mbps WAN connection i
have; auto-negotiating does not work for this connection. If i could
use auto negotiating i would, it would save me a lot of headaches.
Is there a way to check what the connection negotiated to (10 vs
100Mbps, half vs full duplex)?
Status -> interfaces.
perfect.
Should i also use that to set the other interfaces to gigabit ?
The gig E standard requires autonegotiation (and must be full
duplex) but you can set 1000baseTX. Again, I wouldn't recommend it.
It can't force with gig, I presume what the driver does in that
case is only advertises itself as a gigabit capable device and if
the other side can't negotiate at gigabit it won't bring up the
interface.
I'll leave it to auto negotiate, it seems to work right now. I am
running some tests.
Thanks for your help.
Alex
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