SUMMARY: SUN: QFE0 Late Collisions

From: Cheryl Milburn (cmilbu1_at_hallmark.com)
Date: 09/26/03

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    To: sunmanagers@sunmanagers.org
Date: Fri, 26 Sep 2003 11:55:04 -0500

    Thank you all for the quick response. I had about 20+ people respond very
    quickly.

    It turns out I was setting the wrong device in the ndd command. I was
    using /dev/hme when I was having problems with qfe0. I should have been
    using /dev/qfe0. The first command below sets the instance to my qfe0
    instance.

    SOLUTION:

    ndd -set /dev/qfe instance 0
    ndd -set /dev/qfe adv_100hdx_cap 0
    ndd -set /dev/qfe adv_100fdx_cap 1
    ndd -set /dev/qfe adv_10hdx_cap 0
    ndd -set /dev/qfe adv_10fdx_cap 0
    ndd -set /dev/qfe adv_autoneg_cap 0 (Do this last)

    I also verified that the network switch my machine was plugged into was set
    to 100 Full.

    ORIGINAL QUESTION:

    I have a E4500 with Solaris 2.6 on it. I'm getting a lot of late
    collisions errors:
    Sep 26 08:50:47 db1-fe unix: SUNW,qfe0: late collision

    There is a previous thread on this site that talks about this stating that
    it was a full duplex mismatch, but it didn't say what steps were performed
    to fix it.

    I've tried changing the setting using ndd:
    ndd -set /dev/hme adv_autoneg_cap 0
    ndd -set /dev/hme adv_100hdx_cap 0
    ndd -set /dev/hme adv_100fdx_cap 1

    Long term, I'll change the /etc/system file, but this machine is a
    production database server and I can't do a reboot for the changes to take
    affect without a maintenance window.

    Does anybody know how to change this setting on the fly? Please help.

    Thanks,
    Cheryl
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