In message <6b49ee17-6de1-4493-91c1-478f3ba44...@delong.com>, Owen DeLong write s: > > > On Nov 23, 2015, at 12:27 , Mark Andrews <ma...@isc.org> wrote: > > > > > > In message <29055e3f-b923-4e21-8513-60cc8c14a...@delong.com>, Owen > DeLong writes: > >> > >>> On Nov 23, 2015, at 00:53 , Tarko Tikan <ta...@lanparty.ee> wrote: > >>> > >>> hey, > >>> > >>>> So I'd say there is equipment out there that works, as expected, but > as > >>>> seen in this thread, plenty of equipment that doesn't. > >>> > >>> Latest OpenWrt releases include https://github.com/sbyx/odhcpd as > >> DHCPv4/6 server. This enables hierarchical PD on these platforms, ie. > >> subdelegate /64s from the /56 PD prefix you received from SP. > >>> > >>> It's not the most configurable thing at this point but it does the > job. > >> > >> If your SP is giving you a /56, you should complain and ask for a > proper > >> /48. > >> > >> Especially if youâre doing any real hierarchical PD. > >> > >> Owen > > > > Or you just don't do heirarchial routing / PD inside the site. It > isn't needed. > > 65000 intra site routes isn't that hard handle nor is 65000 PD's for > the border > > routers. > > Yes, but to get to 65000 intrasite routes, youâve got to already have > that /48 I was > suggesting you ask for. > > Owen
And a /56 gives you 256 subnets. When you remove unnecessary heirachical delegation / routing that still supports a reasonable sized home network. A /48 would be better but getting the allocation working is the first step. It's easy enough to make a /48 not work if you insist on heirachical delegation. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org
