Re: The Choice: IPv4 Exhaustion or Transition to IPv6

[Bora Akyol <bora.akyol () aprius com>]

The length of the address (64 vs 128) is not the hard part. Just increases
the cost and the complexity of the ASIC ;-)

The extension headers become a real problem when L4 filtering is desired.


Bora



On 6/28/07 2:46 PM, "Valdis.Kletnieks () vt edu" <Valdis.Kletnieks () vt edu>
wrote:

> On Thu, 28 Jun 2007 13:08:52 PDT, Bora Akyol said:
> > At a very low, hardware centric level, IPv6 would be a lot easier to
> > implement if
> >
> > 1) The addresses were 64 bits instead of 128 bits.
> > 2) The extension headers architecture was completely revamped to be more
> > hardware friendly.
>
> Wow, a blast from the past.  The *current* IPv6 design was selected to a
> good extent because it was *easier* to do in hardware than some of the other
> contenders.  You think 64 versus 128 is tough - think about the ASIC fun and
> games to support *variable length* addresses (not necessarily even a multiple
> of 4 bytes, in some of the proposals. Could be 7, could be 11, check the
> address length field for details. Yee. Hah).