# [OmniOS-discuss] ixgbe: breaking aggr on 10GbE X540-T2

Dale Ghent daleg at omniti.com
Thu Jan 19 16:13:26 UTC 2017

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    > On Jan 19, 2017, at 4:27 AM, Stephan Budach <stephan.budach at JVM.DE> wrote:
    >
    > Am 18.01.17 um 17:38 schrieb Stephan Budach:
    >> Am 18.01.17 um 17:32 schrieb Dan McDonald:
    >>> Generally the X540 has had a good track record.  I brought up the support for this a long time ago, and it worked alright then.  I think Dale has an X540 in-house which works fine too (he should confirm this).
    >>>
    >>> Some other things to check:
    >>>
    >>> * Is your BIOS set to map the PCI-E space into the low-32 bits only?  That's an illumos limitation.
    >>>
    >>> * Do you have other known-working 10GigBaseT chips to try?
    >>>
    >>> Dan
    >>>
    >>>
    >> I will check with the BIOS, altough I thought that this option would simply cause PCI adaptors to vanish from the system, if setup that way.
    >> Actually, I have been going with Intel all the time and it has been up to the X540 in 10GbE setups only, when I ever startet to experience issues at all, so Intel has been a natural choice for me ever… ;)
    >>
    >> Stephan
    > I just checked the BIOS of my new Supermicros and I think that this is the BIOS option you were referring to…
    >
    > Above 4G Decoding: DISABLED
    >
    > So, this should be right, shouldn't it?

    Correct, currently it should be disabled (however we hope by the time 022 is released, there will not be a reason to have that disabled)

    /dale

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