please define terms

[Jeremiah Kristal]

I'm actually working on putting the list up right now.  It should be up
tonight, and then I'll post the URL, I'm still not sure which server it
will reside on.  I also plan on putting up an unofficial faq if there
aren't any objections.

Jeremiah

On Tue, 21 Jan 1997, Kim Hubbard wrote:

> >
> Paul,
>
> We're going to add a recommended reading list to the ARIN page.
>
> Kim
>
> > This is another glaring indication that people are tossing opinions
> > into the discussion while being completely oblivious to the technology.
> >
> > So, I'll take another opportunity to mention the CIDR FAQ:
> >
> >   http://www.rain.net/faqs/cidr.faq.html
> >
> > I also posted a 'recommended reading list' a few days ago; if someone
> > would like for me to repost it, please speak up. It would be ideal if
> > we could get a web page put together with these pointers to keep the
> > signal/noise ratio on the list somewhat tolerable (pretty far gone for
> > that, I'm afraid).
> >
> > - paul
> >
> > At 09:34 PM 1/20/97 -0500, Philip J. Nesser II wrote:
> >
> > >Larry Honig supposedly said:
> > >>
> > >> I'm sorry to brutally expse my ignorance of terms, but I may not be the
> > >> only neophyte here so I will do it anyway. What exactly is meant by /24,
> > >> /19, /xx??  It seems that the "buying power" represented must be greater
> > >> as the denominator decreases. Would a /1 allocate all 4 billion IPs?
> > >> How does this map into - lets say - a scheme where I as an ISP would
> > >> like to allocate (in IPv4 syntax) all the numbers between (for example -
> > >> not a real sequence) 99.128.51.0 and 99.128.51.255? Also, under IPv6 how
> > >> would this look? Please give a specific example if possible. Thanks in
> > >> advance.
> > >>
> > >
> > >its easiest to work it backwards:
> > >
> > >/32     1 address
> > >/31     2 addresses
> > >/30     4 addresses
> > >/29     8 addresses
> > >/28    16 addresses
> > >...
> > >/24   256 addresses (traditional class C)
> > >...
> > >/16 65536 addresses (traditional class B)  (or a block of 256 traditional
> > >                                            Class C's)
> > >
> > >so 192/8 means the 65536 traditional class C addresses starting at
> > >192.0.1.0 to 192.255.255.0
> > >
> > >
> > >your examples would be written as 99.128.51/24
> > >
> > >
> > >There are countless materials on this but I suggest looking at an RFC
> > >archive and searching for CIDR.  (Try RFC 1518)
> > >
> >
>

      ________
      \______/                  Jeremiah Kristal
       \____/                   Senior Network Integrator
        \__/                    IDT Internet Services
         \/                     jeremiah at hq.idt.net
                                201-928-4454