[153444] in North American Network Operators' Group
Re: ipv6 book recommendations?
daemon@ATHENA.MIT.EDU (Cutler James R)
Wed Jun 6 11:01:26 2012
From: Cutler James R <james.cutler@consultant.com>
In-Reply-To: <CAHHzyzAO=-oqcKfrd4fOnzcaxr-HuUydajjNr_=DEgP0OD12bg@mail.gmail.com>
Date: Wed, 6 Jun 2012 11:00:02 -0400
To: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jun 6, 2012, at 9:53 AM, Anton Smith wrote:
> <snip>
> Hi all,
>=20
> Potentially silly question but, as Bill points out a LAN always =
occupies a /64.
>=20
> Does this imply that we would have large L2 segments with a large
> number of hosts on them? What about the age old discussion about
> keeping broadcast segments small?
>=20
> Or, will it be that a /64 will only typically have a similar number of
> hosts in it as say, a /23|4 in the IPv4 world?
>=20
> Cheers,
> Anton
Now you have deduced the beauty of the scheme. The number of end points =
does not matter to IPv6 address planning.
Said another way - my factory subnet may have a gazillion(1) little =
machines on one subnet while my data center boxes may have several =
subnets. Just count the subnets. Let the traffic/technology drive the =
use per subnet whilst you TRILL(2) a pretty tune.
Note (1) Gazillion < 2^64
Note (2) Thanks, Radia
James R. Cutler
james.cutler@consultant.com
