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Date:      Fri, 8 Apr 2016 10:12:57 -0700
From:      Sean Bruno <sbruno@freebsd.org>
To:        freebsd-net@freebsd.org
Subject:   Re: TCP packets Drop !!
Message-ID:  <5707E699.1020708@freebsd.org>
In-Reply-To: <CAD3xhrNg_U%2BU0DkGTrM9TJ%2BeWV-OmJuYF1vOHxWKwYXKrJ%2BXow@mail.gmail.com>
References:  <CAD3xhrO4HcxKC0V78VsuSwLS65%2BdUwBdPAPqsvzzdGDRJY=Sxg@mail.gmail.com> <CAD3xhrNg_U%2BU0DkGTrM9TJ%2BeWV-OmJuYF1vOHxWKwYXKrJ%2BXow@mail.gmail.com>

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On 04/05/16 06:26, shahzaib mushtaq wrote:
> Here is the full output of netstat -s :
> 
> http://pastebin.com/pyxDtJkL
> 
> 
> 
> On Tue, Apr 5, 2016 at 3:38 PM, shahzaib mushtaq
> <shahzaib.cb@gmail.com> wrote:
> 
>> Hi Guys,
>> 
>> Hopes i've landed on the correct forum for tcp network queries.
>> We've seen tons of packets being dropped via command netstat -s
>> in our production with FreeBSD-10.1. The one whose timeout value
>> keeps on increasing is 'rexmit timeout' . Here is the list of
>> timeout / dropped packets.
>> 
>> http://prntscr.com/aod4f2
>> 
>> The server is on 4x1Gbps Lacp port . We've also tried disabling
>> NICs feature TSO but in vain :
>> 
>> http://prntscr.com/aod526
>> 
>> Please let me know if you need any further info to help resolving
>> this issue ?
>> 
>> Thanks in advance !!
>> 
>> Regards. Shahzaib
>> 
> _______________________________________________ 
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> 


I was seeing something, that I thought was a problem with my lab with
lagg(4) lacp.

I have a small NetGear switch that is capable of lagg(4) with LACP,
and I saw the same small number of dropped packets/out of order problem.

Does the problem *still* happen with no LACP?

sean
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