10G switch drops traffic for a split second

Mikael Abrahamsson swmike at swm.pp.se
Wed Nov 30 16:43:49 UTC 2016

On Tue, 29 Nov 2016, TJ Trout wrote:

> Is it possible to over run the buffers of a 320gbps backplane switch 
> with only 1.5gbps traffic? I think the switch is rated for 140m PPS and 
> I'm only pushing 100k PPS

If your switch is the typical small-buffered-switch that has become more 
and more common the past few years, then the entire switch might have 
buffer to keep packets for 0.1ms or less. So if someone says "flow control 
off" for 0.1ms, depending on the implementation, you might then start 
seeing packet drops on all ports until that device turns flow control 
back on.

Mikael Abrahamsson    email: swmike at swm.pp.se

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