[192847] in North American Network Operators' Group
Re: 10G switch drops traffic for a split second
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Tue Nov 29 12:49:04 2016
X-Original-To: nanog@nanog.org
Date: Tue, 29 Nov 2016 18:47:22 +0100 (CET)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: TJ Trout <tj@pcguys.us>
In-Reply-To: <CAP5r2csgw-1AE1O5kgYtp57V_pcMqa=otGj+Bn-o+j1h0VYoBA@mail.gmail.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
On Tue, 29 Nov 2016, TJ Trout wrote:
> Could this be MTU? I've tried flow control, hard code duplex, stp on/off
> etc
As others have pointed out, you probably have a switch with small buffers.
If you also have flow control and you have something that triggers flow
control to turn off packet forwarding, your small-buffer-switch might fill
up all (shared) buffers on that port and now you're dropping traffic to
all ports.
So trying to find if you have something where flow control is enabled and
is being triggered might be something worthwhile to do, and also perhaps
just turn off flow control on all ports to make sure.
--
Mikael Abrahamsson email: swmike@swm.pp.se
