Dual-rate transceivers with ixgbe?

[Alexander Sack]

On Wed, Jun 9, 2010 at 11:01 PM, Juli Mallett <jmallett at freebsd.org> wrote:
> On Wed, Jun 9, 2010 at 19:56, Alexander Sack <pisymbol at gmail.com> wrote:
>> $ ifconfig ix1
>> ix1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
>
> You need to bring the interface up in order for the SFP configuration to occur.

I am little bit confused:

What's different with the ixgbe(4) than em(4)?  i.e. My second em(4)
interface auto-negotiates properly on boot up, why shouldn't ixgbe
without having to do an additional ifconfig down/up cycle?

(my ifconfig output above might be a little off since I was debugging
my SFP issues).

-aps