On Tue, Nov 1, 2022 at 10:31 AM Wolfgang Tremmel < wolfgang.tremmel@de-cix.net> wrote:
No. But renumbering an IX is *pain*. A lot of pain. You want to avoid that if possible. A /26 allows (given that the IX uses about 2-4 IPs itself) about 60 customers.
So according to the numbers, for 70% of the IXes this will never fill up, so no need for renumbering. Depending on how quickly it filled up, you then go either for a /25 or a /24.
To sum up: - if you start with a /26 ==> 30% has to renumber - if you start with a /29 ==> 75% has to renumber ---> more pain!
I think maybe we want something in between; what do /27 and /28 look like? /29 could be forcing too much pain into the system, and /26 probably isn't enough pain in the system. Furthermore, /29 seems a little too small for a reasonable growth cycle before having to renumber. 50% fill of a /29 would be 3 of 6 usable addresses. Meaning many IXes could almost immediately qualify for a larger subnet, and they would have very much time to implement a renumbering process. Whereas with a /28, 50% fill would be 7 of 14 usable addresses. That seems like it would allow for reasonable growth before having to renumber and some runway to actually accomplish the renumbering process. Basically, a /29 is probably too small to be practical. Thanks
Am 1. Nov 2022 um 15:48 schrieb Tore Anderson <tore@fud.no>:
If not, how exactly would a default /29 policy «cripple» an IX from growing past 6 members, or a default /28 «cripple» it from growing past 14 members for that matter?
-- Wolfgang Tremmel
Phone +49 69 1730902 0 | wolfgang.tremmel@de-cix.net Executive Directors: Ivaylo Ivanov and Sebastian Seifert | Trade Registry: AG Cologne, HRB 51135 DE-CIX Management GmbH | Lindleystrasse 12 | 60314 Frankfurt am Main | Germany | www.de-cix.net
--
To unsubscribe from this mailing list, get a password reminder, or change your subscription options, please visit: https://lists.ripe.net/mailman/listinfo/address-policy-wg
-- =============================================== David Farmer Email:farmer@umn.edu Networking & Telecommunication Services Office of Information Technology University of Minnesota 2218 University Ave SE Phone: 612-626-0815 Minneapolis, MN 55414-3029 Cell: 612-812-9952 ===============================================