[157039] in North American Network Operators' Group

home help back first fref pref prev next nref lref last post

Re: IPv4 address length technical design

daemon@ATHENA.MIT.EDU (Johnny Eriksson)
Thu Oct 4 03:57:47 2012

Date: Thu, 4 Oct 2012 9:57:34 WET DST
From: Johnny Eriksson <bygg@cafax.se>
To: nanog@nanog.org
In-Reply-To: Your message of Wed, 03 Oct 2012 15:59:12 -0400
Reply-To: Johnny Eriksson <bygg@cafax.se>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

Valdis.Kletnieks@vt.edu wrote:

> And the -10s and -20s were the major reason RFCs refer to octets
> rather than bytes, as they had a rather slippery notion of "byte"
> (anywhere from 6 to 9 bits, often multiple sizes used *in the
> same program*).

Not quite correct.  Anywhere from 1 to 36 bits, and not spanning
a 36-bit word boundary.  Essentialy what is now known as a bit field.

--Johnny


home help back first fref pref prev next nref lref last post