On Wed, Jan 4, 2023 at 4:32 PM William Herrin <b...@herrin.us> wrote:
> On Wed, Jan 4, 2023 at 11:52 AM Fernando Frediani <fhfredi...@gmail.com> > wrote: > > Another thing that I wanted to understand better is the reasoning to > allocate a significant smaller IPv6 block to a said end-user organization > given it is not so scarce resource. > > The standard size assignment to an end user is /48 per IETF > recommendation. That's 65,000 LANs, 2^80 IP addresses. Vanishingly few > end-user organizations actually have a need for more LANs than that. > However, since /48 is also the minimum Internet routable size, > end-user organizations with multiple independently-connected sites may > need several /48s. That's a minority of end-users but still a > significant number. > This is all true; However, justifying a larger end-user allocation (formerly known as an assignment) isn’t that hard either; you justify a /48 per site in a larger multi-site organization; they don’t have to be independently connected. That is, more than 1 site but less than or equal to 12 sites receive a /44 allocation; more than 12 but less than or equal to 192 sites receive a /40 allocation; see the policy for even larger allocations and a discussion for campus environments. Also, most larger organizations likely could qualify as an ISP/LIR if they wish. So, many end-user organizations are receiving /44s, /40s, and even larger allocations without much trouble. Could the ARIN staff provide an updated histogram of IPv6 allocation sizes; I haven't seen one in several years. I hope that helps. > ISPs get a /32 so that, by default, they can assign 65,000 /48s to > their customers and still keep a few for themselves. That's the reason > they receive significantly more. > > Regards, > Bill Herrin > > -- > For hire. https://bill.herrin.us/resume/ > _______________________________________________ > ARIN-PPML > You are receiving this message because you are subscribed to > the ARIN Public Policy Mailing List (ARIN-PPML@arin.net). > Unsubscribe or manage your mailing list subscription at: > https://lists.arin.net/mailman/listinfo/arin-ppml > Please contact i...@arin.net if you experience any issues. > -- =============================================== David Farmer Email:far...@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 ===============================================
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