/25's prefixes announced into global routing table?

Mon Jun 24 11:04:23 UTC 2013

John Levine wrote:

> I realize it's not quite that simple due to issues of longer prefixes
> taking precedence over shorter ones, but it is my impression that
> there's a lot of sloppiness.

16M /24 is just a cheap 16M entry SRAM.

However, 16M /32 means 4G entry SRAM or 16M entry CAM.

16M entry with /40 or /48 prefix means 16M entry CAM, which is hard,
which is why IPv6 is hard.

						Masataka Ohta