Date: Fri, 21 Jun 2013 16:14:07 -0400 From: "Majdi S. Abbas" <msa@latt.net>
On Fri, Jun 21, 2013 at 01:56:02PM -0600, Michael McConnell wrote:
As the IPv4 space get smaller and smaller, does anyone think we'll see a time when /25's will be accepted for global BGP prefix announcement. The current smallest size is a /24 and generally ok for most people, but the crunch gets tighter, routers continue to have more and more ram will it always be /24 the smallest size?
RAM != FIB.
The forwarding hardware is generally going to be the limit, and that's going to be painful enough as we approach a half million prefixes.
You couldn't even consider such a thing until after that pain point.
--msa
There are techniques to fix that. For example, Simple Virtual Aggregation http://tools.ietf.org/html/rfc6769 -- Jakob Heitz.