[192865] in North American Network Operators' Group
Re: 10G switch drops traffic for a split second
daemon@ATHENA.MIT.EDU (Michael Loftis)
Tue Nov 29 18:16:22 2016
X-Original-To: nanog@nanog.org
In-Reply-To: <alpine.BSF.2.20.1611291757240.63356@nog2.angryox.com>
From: Michael Loftis <mloftis@wgops.com>
Date: Tue, 29 Nov 2016 15:16:17 -0800
To: Peter Beckman <beckman@angryox.com>
Cc: nanog <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
Yeah you also have to look for not so obvious things like MAC Pause
frames sent/received...QoS counters, all sorts of VERY platform
specific stuff. Right royal pain, especially since some do not expose
these statistics at all.
On Tue, Nov 29, 2016 at 3:10 PM, Peter Beckman <beckman@angryox.com> wrote:
>
> On Tue, 29 Nov 2016, TJ Trout wrote:
>
>> I plan on disabling FC on everything tonight, I've done that before but I
>> want to be sure.
>>
>> Anything that can be done about the 2 x 1G peers trunking to the 10G
>> router
>> transition that can be fixed? should I be rate limiting the vlan for the
>> peers at 1G so the 10G router isn't trying to send more than 1G?
>
>
> This thread reminded me of a blog post that struck me as useful 5 years
> ago, and again today. Measuring throughput, when dealing with buffers and
> troubleshooting errors and packet loss, must be done at a sub-one-second
> sampling rate.
>
> http://blog.serverfault.com/2011/06/27/per-second-measurements-dont-cut-it/
>
> Beckman
> ---------------------------------------------------------------------------
> Peter Beckman Internet Guy
> beckman@angryox.com http://www.angryox.com/
> ---------------------------------------------------------------------------
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