Intel 82541GI NIC comes up at 10mbps on one port

[Mikkel L. Ellertson]

Sam Varshavchik wrote:
> I'm stumped. I've got a motherboard with the following dual-port NIC:
> 
> 03:0a.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet
> Controller
>     Subsystem: Intel Corporation PRO/1000 MT Network Connection
> 
> One port is connected to my DSL modem. It comes up at 100mbps:
> 
> Aug 17 15:54:41 headache kernel: e1000: eth0: e1000_watchdog: NIC Link
> is Up 100 Mbps Full Duplex, Flow Control: RX
> 
> The second port is connected to a plain-vanilla Linksys router. That
> port always negotiates to 10mbps, no matter what:
> 
<---------{[SNIP]---------------->
> 
> I've arrived at a dead end. No matter what, the motherboard can talk to
> the router only @10mbps. The only possibility that I see is that the
> 'Intel Corporation 82541GI' NIC has an interoperability problem with
> this specific Linksys router hardware. It's a plain blue 5-port consumer
> router, plug in and go, no knobs to turn.
> 
> So, any suggestions, besides "get a new router"?
> 
Try using ethtoolto lock the port to 100 Mbs Full Duplex. It is
probably that the two do not handshake correctly to set the faster
speed. If I remember correctly, that was one of the things that the
exact protocol was not specified, so not all hardware works correctly.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: OpenPGP digital signature
Url : http://lists.fedoraproject.org/pipermail/users/attachments/20080817/338a21c1/attachment-0001.bin