5G roadblock: labor

Sun Jan 5 20:44:04 UTC 2020

----- On Jan 5, 2020, at 4:48 AM, John D'Ambrosia jdambrosia at gmail.com wrote:

Hi,

> At the very end you note 100base-t as a precursor to 400g.  100baset really
> found its success as an access solution - computer connections.  400GbE will be
> an aggregation / core solution.  It will be some time if ever where 400GbE is
> used as an access solution - perhaps some hpc applications.

> Cost and no need for that sort of bw.

When I was at SuperCompute 19 in Denver last November, some people were
looking for a switch supporting 200G so they could connect their server
to it. The server had Mellanox 200G NICs. There was also an interesting NASA
talk about how high bandwidth allowed them to accelerate their data analysis
of anything from windtunnel results to live spacecraft launch telemetry. 

If I learned anything working with DC guys, it is that you give the
server guys bandwidth, they will find a way to use it.

That said, I agree with you that it will take a while before that'll be
anywhere close to 400G. The last cloud environment I worked with recently
was still in the process of qualifying 25G for their server farms. TORs were
not even considered yet and were still running 10G downstream.

Thanks,

Sabri