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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: A slight call to order (Re: Internic address allocation policy )
> Date: Mon, 20 Mar 1995 11:21:12 -0600 (CST) > From: [email protected] (Karl Denninger) > To: [email protected] > > > Taking a relatively small chunk of the remaining address space > > > (say, 210.*.*.*) gives us 64k addresses to hand out in convenient > > > > That's 16M addresses, not 64K addresses. We should not equivocate "addre sses" > > and "Class C networks". 210.*.*.* has 2^24 (minus subnet zero and broadc ast > > lossage) addresses -- 16M. 210.*.*.* has 2^16 "Class C networks" -- 64K. We > > must not assume that every customer will get a Class C -- many will get j ust a > > subnet since they will only have a handful of hosts. I know of several > > providers who are chopping things up on nybble boundaries (16 hosts/net, or > > actually 14 with the subnet zero and broadcast taken out). > > Not me! > > I consider a "Class B equivalent" to be 256 NETWORKS, by the common use of > the term, but 65K *addresses*. 1 Class-B-sized prefix = 256 Class-C-sized prefixes. A "network" could be a Class A, B, C, etc., network, or a CIDR network, etc. > Karl Denninger ([email protected])| MCSNet - The Finest Internet Connectivity > Modem: [+1 312 248-0900] | (shell, PPP, SLIP, leased) in Chicagoland > Voice: [+1 312 248-8649] | 6 POPs online through Chicago, all 28.8 > Fax: [+1 312 248-9865] | Email to "[email protected]" for more information > ISDN: Surf at Smokin' Speed | WWW: http://www.mcs.net, gopher: gopher.mcs. net
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