Dual-rate transceivers with ixgbe?

[Jack Vogel]

Hmmm, this is odd, I'm sure that was tested by my validation engineer.
Tell me what the hardware looks like, ie what the 1G link partner is
and I'll have him check into it... it SHOULD work.

You could just ask me you know :)

Jack


On Tue, May 18, 2010 at 10:39 PM, Juli Mallett <jmallett at freebsd.org> wrote:

> Hey all,
>
> Has anyone out there been able to get link using a dual-rate
> transceiver at 1gig with the ixgbe driver in FreeBSD?  I have an SFP+
> NIC and an Intel-branded dual-rate transceiver but it will only get
> link at 10gig.
>
> I used the latest driver from FreeBSD trunk backported (which IIRC
> didn't take any significant changes; jfv@ does a good job of keeping
> the drivers working across branches) to 7.x for my testing.  A
> similarly-versioned Linux driver (with only trivial and mostly
> cosmetic differences in the hardware code outside of the main driver)
> worked at 1gig just fine.  All testing was done with switches rather
> than host-to-host connections.
>
> It seems like someone else must have tried this and it seems like
> there must just be some trivial difference in card initialization
> between FreeBSD and Linux, so I thought I'd ask publicly to see if
> anyone had patches.  I instrumented the code extensively but so far
> have come up empty-handed.
>
> Thanks,
> Juli.
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