[135421] in North American Network Operators' Group
Re: Using IPv6 with prefixes shorter than a /64 on a LAN
daemon@ATHENA.MIT.EDU (sthaug@nethelp.no)
Tue Jan 25 01:03:16 2011
Date: Tue, 25 Jan 2011 07:02:30 +0100 (CET)
To: owen@delong.com
From: sthaug@nethelp.no
In-Reply-To: <8B0D83FB-38DD-4C4D-9870-5913425BA3A2@delong.com>
Cc: nanog@nanog.org, carlos@lacnic.net
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> > IPv6 is classless; routers cannot blindly make that assumption for "performance optimization".
> >
> Blindly, no. However, it's not impractical to implement fast path switching that
> handles things on /64s and push anything that requires something else
> to the slow path.
Any vendor who was stupid enough to do *hardware* switching for up to
/64 and punted the rest to software would certainly not get any sales
from us.
128 bits. No magic.
Steinar Haug, Nethelp consulting, sthaug@nethelp.no
