Date: Thu, 19 Dec 2002 20:46:26 +0000 From: Ceri Davies <setantae@submonkey.net> To: Marc Fonvieille <blackend@freebsd.org> Cc: "Jeffrey P.Bogert" <jbogert@mitre.org>, freebsd-doc@freebsd.org Subject: Re: FreeBSD Handbook Message-ID: <20021219204626.GB7370@submonkey.net> In-Reply-To: <20021219195435.GA540@nosferatu.blackend.org> References: <3E01FA5E.87B6FC46@mitre.org> <20021219195435.GA540@nosferatu.blackend.org>
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On Thu, Dec 19, 2002 at 08:54:35PM +0100, Marc Fonvieille wrote: > On Thu, Dec 19, 2002 at 11:57:02AM -0500, Jeffrey P.Bogert wrote: > > > 2) on page 53 in the section "Netmask" > > the Class C block should be 192.168.0.0-192.168.0.255 instead of > > 192.168.0.0-192.168.255.255 > > > > 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. The quoted text neither agrees nor disagrees with your statement, though. It might be a "block of class Cs", but it's definitely not a "class C block". Class notation is deprecated, and people would do well to avoid it. 192.168/16 is just that, "a /16". Ceri -- The beards of the gold have brought your death! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-doc" in the body of the messagehelp
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