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

Fri Mar 16 00:05:41 UTC 2012

james machado wrote:

>> 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.

> I found this bit of research from 2007 (
> http://www.cise.ufl.edu/~wlu/papers/tcam.pdf ).  It seems to me there
> are probably more ways to mix and match different types of ram to be
> able to deal with this beast.

But it's not fixed time.

Worse, it synthesis IPv6 table from the current IPv4 ones, which
means the number of routing table entries is a lot less than 1M.

						Masataka Ohta