nanog mailing list archives
Re: ISP customer assignments - and CIDR
From: "James R. Cutler" <james.cutler () consultant com>
Date: Fri, 16 Oct 2009 17:44:59 -0400
On Oct 16, 2009, at 5:19 PM, Owen DeLong wrote:
I've taught both. If you try to teach it in Decimal, Hex, or Octal, you're right, it's hardto teach CIDR and easy to teach classful.
It really does not matter the representation as long as you divide your Address Pie with a Binary Knife. Once you understand that -- 1/2, 1/2 of 1/2, 1/2 of 1/2 of 1/2, ... -- then you should understand CIDR. Then, as Owen suggests, deal with the representation. Works for IPv4, IPv6, and, probably, IPv8. ;)
Warning, strong opinion follows: One should never have to mention Classful addressing except to note that it is archaic, anachronistic, and used only by those who remain ignorant by preference.
James R. Cutler james.cutler () consultant com
Current thread:
- Re: ISP customer assignments, (continued)
- Re: ISP customer assignments Joe Abley (Oct 13)
- Re: ISP customer assignments Scott Morris (Oct 13)
- Re: ISP customer assignments Joe Abley (Oct 13)
- Re: ISP customer assignments Scott Morris (Oct 13)
- Re: ISP customer assignments John Kristoff (Oct 13)
- Re: ISP customer assignments TJ (Oct 13)
- Re: ISP customer assignments Daniel Golding (Oct 16)
- RE: ISP customer assignments Brian Johnson (Oct 16)
- Re: ISP customer assignments Walter Keen (Oct 16)
- Re: ISP customer assignments Owen DeLong (Oct 16)
- Re: ISP customer assignments - and CIDR James R. Cutler (Oct 16)
- Re: ISP customer assignments Valdis . Kletnieks (Oct 13)
- Re: ISP customer assignments Mark Smith (Oct 13)
- Re: ISP customer assignments Matthew Petach (Oct 13)
- Re: ISP customer assignments Joe Abley (Oct 13)
- Re: ISP customer assignments Marco Hogewoning (Oct 13)
- Re: ISP customer assignments Scott Morris (Oct 13)
- Re: ISP customer assignments Michael Dillon (Oct 13)
- Re: ISP customer assignments Chris Adams (Oct 13)
- Re: ISP customer assignments Cord MacLeod (Oct 13)
- Re: ISP customer assignments James Hess (Oct 13)