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Subject: [Bug 211643] ixgbe(4) does not reliably bring up 10G links with
 ZyXEL XS1920 switches
Date: Sun, 07 Aug 2016 18:32:39 +0000
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X-Bugzilla-Product: Base System
X-Bugzilla-Component: kern
X-Bugzilla-Version: 10.3-RELEASE
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X-Bugzilla-Severity: Affects Some People
X-Bugzilla-Who: nwhitehorn@FreeBSD.org
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211643

            Bug ID: 211643
           Summary: ixgbe(4) does not reliably bring up 10G links with
                    ZyXEL XS1920 switches
           Product: Base System
           Version: 10.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: nwhitehorn@FreeBSD.org
                CC: freebsd-amd64@FreeBSD.org
                CC: freebsd-amd64@FreeBSD.org

I am using ixgbe(4) with the on-board X550-T2 NIC on a SuperMicro X11SSH-CTF
motherboard, attached to a port on a ZyXEL XS1920-12 switch. The system is
running FreeBSD 10.3.

If the interface is set to autonegotiate, the port takes 2-5 minutes to bri=
ng
up the link and 99% of the time it comes up as 1 Gbit, rather than 10. Forc=
ing
the media to 10GBase-T results in the link coming up as 10GBase-T fairly
reliably (80% of the time). It again typically takes several minutes for the
link to go up and, in the other 20% of cases, it either takes hours or the =
link
stays down permanently.

RHEL6.8 on the same hardware brings up the link reliably with no noticeable
delay.

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