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List: freebsd-net
Subject: Re: [ed] link state constantly going down and up
From: Miki <miki.bsd () gmail ! com>
Date: 2009-04-30 13:19:32
Message-ID: 261c29700904300619l3f2e2d68s580f95a3c673fddf () mail ! gmail ! com
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2009/4/30 M. Warner Losh <imp@bsdimp.com>
> In message: <261c29700904300029s6757d39ei86fbf69ef816fa48@mail.gmail.com>
> Miki <miki.bsd@gmail.com> writes:
> : 2009/4/30 M. Warner Losh <imp@bsdimp.com>
> :
> : > In message: <
> 261c29700904300004k4bc02635m2729a0a54c09c135@mail.gmail.com>
> : > Miki <miki.bsd@gmail.com> writes:
> : > : 2009/4/29 M. Warner Losh <imp@bsdimp.com>
> : > :
> : > : > : I have a problem with a D-Link DFE-670TXD which is handled by
> if_ed :
> : > : > : the link state is constantly going down and up :
> : > : > : Apr 28 14:21:33 iut-mir-o kernel: ed0: link state changed to DOWN
> : > : > : Apr 28 14:21:35 iut-mir-o kernel: ed0: link state changed to UP
> : > : > ...
> : > : > : the problem appear with the following commit :
> : > : > : SVN rev 190643 on 2009-04-02 16:58:45Z by imp (CVS rev 1.126)
> : > : > : I do not see any link state change if I revert the commit.
> : > : >
> : > : > Doh!
> : > : >
> : > : > I needed to force auto negotiation for other cards to work. Let me
> : > : > see if I can dig up the DFE-670TXD and go from there... Are you
> also
> : > : > seeing really horrible network performance as well? Do you see
> this
> : > : > only under load, or just at idle?
> : > : >
> : > : > Warner
> : > : >
> : > :
> : > : Yes network performance suffers from this. The problem only appears
> under
> : > : load
> : > : but not when idle.
> : >
> : > Thanks. I'll try to reproduce it here. I noticed this on one of the
> : > cards, but had trouble reproducing it, but I'll try harder.
> : >
> : > Warner
> : >
> :
> : I can easily reproduce this by downloading an ISO image via ftp
> : and doing a checkout of a subversion repository
>
> OK. I'll try that. Do you know if you are able to trigger it with
> ttcp too? That's where I saw the odd symptoms before...
>
> Warner
>
No I'm unable to trigger it with ttcp.
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