Date: Thu, 19 Dec 2002 15:11:21 -0500 From: Tom Rhodes <trhodes@FreeBSD.org> To: Marc Fonvieille <blackend@FreeBSD.org> Cc: freebsd-doc@FreeBSD.org Subject: Re: FreeBSD Handbook Message-ID: <20021219151121.20e5803e.trhodes@FreeBSD.org> In-Reply-To: <20021219195435.GA540@nosferatu.blackend.org> References: <3E01FA5E.87B6FC46@mitre.org> <20021219195435.GA540@nosferatu.blackend.org>
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On Thu, 19 Dec 2002 20:54:35 +0100 Marc Fonvieille <blackend@FreeBSD.ORG> wrote: > According to RFCs (rfc1918 for example), the Handbook is correct: > > The Internet Assigned Numbers Authority (IANA) has reserved the > following three blocks of the IP address space for private > internets: > > 10.0.0.0 - 10.255.255.255 (10/8 prefix) > 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) > 192.168.0.0 - 192.168.255.255 (192.168/16 prefix) > > We will refer to the first block as "24-bit block", the second as > "20-bit block", and to the third as "16-bit" block. Note that (in > pre-CIDR notation) the first block is nothing but a single class A > network number, while the second block is a set of 16 contiguous > class B network numbers, and third block is a set of 256 contiguous > class C network numbers. > > The Handbook says "Class C block" not "Class C network", so it's Ok. > > Marc > For 10 daemon points, can anyone remember what CIDR is (and stands for) without looking at any RFC's or books? -- Tom Rhodes Who remembers an argument about CIDR several years ago where he quoted the RFC's to prove his point... What number he never remembers ;) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the messagehelp
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