On Sat, Jan 14, 2017 at 5:03 AM, heasley <heas@xxxxxxxxxxxxx> wrote:
> But it's true that supporting /65-/126 increases the cost of the device.
> The extra bits have to go somewhere. I think I've seen hardware that just
> converted all prefixes to 128 bit if there was at least one /65 - /126
> prefix in the FIB. That costs money for RAM. Obviously that's silly if
> those prefixes are frequent, and you can save that money using better
> software engineering - but software engineering costs money too.
do such limited devices really need complex ribs/fibs? address, router,
neighbors. all of which are needed regardless of the prefix length.
The "/65 - /126 challenged" devices I'm talking about were very big iron routers.
> Prefixes don't cost money,
but, they do: https://www.arin.net/fees/fee_schedule.html
No, they don't. The link you provide says you get a /32 for $1000, which puts the cost of a /64 at $1000 / 2^32 or $0.0000002.