[address-policy-wg] About the /22 allocation limitation

On Thu, Apr 10, 2014 at 1:30 PM, Gert Doering <gert at space.net> wrote:Highly
so.  Depending on which vendor you used, "typical" gear deployed

> about 5-7 years ago had a hard limit at 256.000 routes - and that came
> quite close for a number of ISPs.  The hardware upgrade to support 1
> million
> routes did cost significant money (like, 10.000-50.000 EUR/router), and
> it does not truly support "1 million IPv4" routes, if you also have IPv6
> and MPLS in your network - more like 700.000 IPv4 routes in typical
> deployments.  Now, before the big discussion starts: there is other
> gear in the market that scales up to 2 million, etc., but I wanted to
> point out that these are real-world hard limits, and the amount of
> "headroom"
> we have between "what is out there today" (500k) and "what some of the
> fairly widely deployed core routers can do today" (700k) is not so big
> that we want to risk an explosion by factor 2.
>

Ah, that was worse than I thought it was, by far.

Thanks for the clarification!
-- 
Jan
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