[address-policy-wg] Just say *NO* to PI space -- or how to make it lessdestructive

Oliver Bartels wrote:

>>I'm saying that, given a so short duration for routing table lookup,
>>we must make memory for routing table smaller and simpler. Note that,
>>at 1Tbps, 500B packet is 4ns long, at 10Tbps 0.4ns.

> Have you ever heared of multi stage lookup using _pipelining_ ?

Yes, of course.

Sometimes, pipelining can improve performance by a small constant
factor with a small amount of additional hardware.

> If yes, you should be able to understand why your problem
> isn't a problem at all.

Pipelining requires pipeline resigters.

If you have too much stages of pipelining, additional amount of
pipeline registers kills the benefit.

						Masataka Ohta