400G forwarding - how does it work?

Masataka Ohta mohta at necom830.hpcl.titech.ac.jp
Mon Aug 8 06:21:48 UTC 2022

sronan at ronan-online.com wrote:

> There are MANY real world use cases which require high throughput at
> 64 byte packet size.

Certainly, there were imaginary world use cases which require
to guarantee so high throughput of 64kbps with 48B payload
size for which 20(40)B IP header was obviously painful and 5B
header was used. At that time, poor fair queuing was assumed,
which requires small packet size for short delay.

But as fair queuing does not scale at all, they disappeared
long ago.

 > Denying those use cases because they don’t fit
 > your world view is short sighted.

That could have been a valid argument 20 years ago.

						Masataka Ohta

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