Am 25.10.2011 um 11:51 schrieb Emilio Madaio:
Chiming in to express my support, and answer Sascha's question: * slz@baycix.de (Sascha Lenz) [Wed 26 Oct 2011, 08:03 CEST]:
I am not quite sure if 180days for returning the old prefix is really enough in a world where it's hard to reach some peering partners and get reactions in under 360days :-) but i'm not an IXP operator so what do i know... I just assume it's reasonable?
Yes, it is, in my experience. You want to keep the overlap period as small as possible. AMS-IX has renumbered its several peering LANs a couple of times in the past decade, and experience shows that a timeline set several months in advance with a week in which to complete the renumbering works pretty well. Smaller peering LANs that may be comprised of less active peers may take longer to reach all parties but 180 days should still suffice, and serve as a good hard deadline for the process. -- Niels. --