On 2012-10-11 23:02 , Jo Rhett wrote:
I've finally convinced $DAYJOB to deploy IPv6. Justification for the IP space is easy, however the truth is that a /64 is more than we need in all locations. However the last I heard was that you can't effectively announce anything smaller than a /48. Is this still true?
Is this likely to change in the immediate future, or do I need to ask for a /44?
A /64 is for a single link (broadcast domain, though with IPv6 multicast domain is more appropriate). A /48 (or /56 for end-users for some of the RIRs) is for a single end-site ("a different administrative domain and/or a different physical location"). If you thus have 5 end-sites, you should have room for 5 /48s and thus a /47 is what you can justify. If you though are not able to do transit / routing between those sites as they are not connected one might want to get separate PI /48s for them. But likely if you are in that camp, just asking for address space, that you can use stably for a long time, from your network provider who provides you connectivity is a better way to go. Greets, Jeroen