Date: Mon, 1 Sep 2003 21:53:54 -0700 (PDT) From: Tom <tom@light.sdf.com> To: Doug Barton <DougB@FreeBSD.org> Cc: Haesu <haesu@towardex.com> Subject: Re: Multi-Homed Routing Message-ID: <20030901214806.I60750@light.sdf.com> In-Reply-To: <20030901213220.U6074@znfgre.qbhto.arg> References: <0AF1BBDF1218F14E9B4CCE414744E70F07DF30@exchange.wanglobal.net> <20030901211636.Y58733@light.sdf.com> <20030901213220.U6074@znfgre.qbhto.arg>
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On Mon, 1 Sep 2003, Doug Barton wrote: > On Mon, 1 Sep 2003, Tom wrote: > > > For those in the Americas, ARIN will not give you anything less than a > > /19 > > If this was ever true, it hasn't been true for a long time: > > http://www.arin.net/policy/ipv4.html Strictly speaking it is a /20 now. It was changed. But to get a /20, you need to prove that you are actually using a /20's worth of space of already. That means completing filling at least 12 class-Cs. And by getting a block from ARIN, you are compelled to re-number, meaning most of your /20 is gone. That is ok, if your network isn't growing too quickly, but if you are adding lots yet, most networks will want a /19. You certainly are not going to get a /24 from ARIN: ARIN allocates IP address prefixes no longer than /20. If allocations smaller than /20 are needed, ISPs should request address space from their upstream provider. > Doug > > -- Tom
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