/25's prefixes announced into global routing table?

Sat Jun 22 01:11:55 UTC 2013

Majdi S. Abbas wrote:

> 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.

For /24, cheap 16M entry SRAM == 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.

True. And that's why we must avoid IPv6.

						Masataka Ohta