Re: 400G forwarding - how does it work?

Saku Ytti wrote:

...

When many TCPs are running, burst is averaged and traffic is poisson.

If you grow a window, and the sender sends the delta at 100G, and receiver is 10G, eventually you'll hit that 10G port at 100G rate.

Wrong. If it's local communicaiton where RTT is small, the window is not so large smaller than unbloated router buffer. If RTT is large, your 100G runs over several 100/400G backbone links with many other traffic, which makes the burst much slower than 10G. Masataka Ohta