Shim6, was: Re: filtering /48 is going to be necessary

Thu Mar 15 04:18:04 UTC 2012

Randy Bush wrote:

> none of which seem to move us forward.  i guess the lesson is that, as
> long as we are well below moore, we just keep going down the slippery,
> and damned expensive, slope.

As long as we keep using IPv4, we are mostly stopping at /24 and
must stop at /32.

But, see the subject. It's well above moore.

For high speed (fixed time) routed look up with 1M entries, SRAM is
cheap at /24 and is fine at /32 but expensive and power consuming
TCAM is required at /48.

That's one reason why we should stay away from IPv6.

						Masataka Ohta