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Re: how to save the visitors ip addresses [message #180927 is a reply to message #180922]

Tue, 26 March 2013 10:42

Thomas 'PointedEars'
Messages: 701
Registered: October 2010

Karma:

Senior Member

Tim Streater wrote:

> Jerry Stuckle <jstucklex(at)attglobal(dot)net> wrote:
>> Sure, the ISP is assigned a block of IPs. But the ISP may have as
>> little as 1 IP assigned, or as many as 16 million out of the same block.
>> […]
>> The ISP would have to have 200K IPs. This could be part of a Class A
>> block or multiple Class B blocks. But if they have 500,000 customers,
>> they will definitely have more than one Class B block. However, they
>> would not need 500,000 IP addresses - that's what DHCP is really about.
>> Assign the IP address only when it is needed.
>
> Why are you talking about Class A, B, or C? These are concepts that were
> abandoned in the 90s, with the introduction of CIDR. It's true that
> prior to that, blocks were allocated in that way, but not any longer.

Classless Inter-Domain Routing (CIDR) did _not_ supersede class-based IP
address ranges in 1993. However, that is also one reason why IPv4 addresses
are about to run out [1], why registries are beginning to assign non-class-
based ranges [2], and why ultimately migration to IPv6 is important to the
continued operation of the Internet.

I refer you to <http://www.iana.org/numbers> pp. to clarify your
misconceptions.

PointedEars
___________
[1] <http://en.wikipedia.org/wiki/IPv4_address_exhaustion>
[2] <http://www.ripe.net/internet-coordination/ipv4-exhaustion/reaching-the-
last-8>
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[Message index]

		how to save the visitors ip addresses By: Nagaraju Kachapuram on Mon, 25 March 2013 08:44
		Re: how to save the visitors ip addresses By: Olaf S. on Mon, 25 March 2013 11:11
		Re: how to save the visitors ip addresses By: Salvatore on Mon, 25 March 2013 11:13
		Re: how to save the visitors ip addresses By: Nagaraju Kachapuram on Mon, 25 March 2013 11:36
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Mon, 25 March 2013 12:28
		Re: how to save the visitors ip addresses By: Tim Streater on Mon, 25 March 2013 12:42
		Re: how to save the visitors ip addresses By: Scott Johnson on Mon, 25 March 2013 13:02
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Mon, 25 March 2013 13:09
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Mon, 25 March 2013 13:26
		Re: how to save the visitors ip addresses By: Scott Johnson on Mon, 25 March 2013 16:55
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 01:44
		Re: how to save the visitors ip addresses By: Tim Streater on Mon, 25 March 2013 13:34
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Mon, 25 March 2013 14:54
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Mon, 25 March 2013 17:24
		Re: how to save the visitors ip addresses By: Scott Johnson on Mon, 25 March 2013 17:03
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 01:57
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Mon, 25 March 2013 17:25
		Re: how to save the visitors ip addresses By: Thomas 'PointedEars' on Mon, 25 March 2013 18:15
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Mon, 25 March 2013 13:22
		Re: how to save the visitors ip addresses By: Richard Damon on Wed, 27 March 2013 05:29
		Re: how to save the visitors ip addresses By: richard on Mon, 25 March 2013 23:39
		Re: how to save the visitors ip addresses By: Beauregard T. Shagnas on Tue, 26 March 2013 00:21
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 00:55
		Re: how to save the visitors ip addresses By: Paul Herber on Tue, 26 March 2013 01:01
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 02:10
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 02:01
		Re: how to save the visitors ip addresses By: Beauregard T. Shagnas on Tue, 26 March 2013 03:10
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 15:18
		Re: how to save the visitors ip addresses By: Evan Platt on Tue, 26 March 2013 05:39
		Re: how to save the visitors ip addresses By: Evan Platt on Tue, 26 March 2013 01:31
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 01:47
		Re: how to save the visitors ip addresses By: Evan Platt on Tue, 26 March 2013 02:34
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 03:27
		Re: how to save the visitors ip addresses By: Tim Streater on Tue, 26 March 2013 09:10
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 10:16
		Re: how to save the visitors ip addresses By: Thomas 'PointedEars' on Tue, 26 March 2013 10:42
		Re: how to save the visitors ip addresses By: Tim Streater on Tue, 26 March 2013 11:47
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 03:38
		Re: how to save the visitors ip addresses By: Evan Platt on Tue, 26 March 2013 04:13
		Re: how to save the visitors ip addresses By: Jerry Stuckle on Tue, 26 March 2013 10:16
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 15:10
		Re: how to save the visitors ip addresses By: The Natural Philosoph on Tue, 26 March 2013 01:43

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