[106595] in North American Network Operators' Group
RE: was bogon filters, now "Brief Segue on 1918"
daemon@ATHENA.MIT.EDU (Darden, Patrick S.)
Wed Aug 6 12:27:07 2008
Date: Wed, 6 Aug 2008 12:26:51 -0400
In-Reply-To: <4899C155.7000501@bogus.com>
From: "Darden, Patrick S." <darden@armc.org>
To: "Joel Jaeggli" <joelja@bogus.com>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
Most organizations that would be doing this would not randomly pick out =
subnets, if I understand you. They would randomly pick out a subnet, =
then they would sub-subnet that based on a scheme. I believe this is =
the intent of RFC 1918. Not to apply a random IP scheme, but to =
randomly pick a network from the appropriate sized Private Networking =
ranges, then apply a well thought out scheme to the section of IP =
addresses you chose.
E.g. 10.150.x.y/16 as their network. X could be physical positioning, =
and Y could be purposive in nature. 10.150.0.0 as basement, 10.150.1.0 =
as first floor, 10.150.2.0 as second floor, etc. 1-20 as =
switches/routers, 21-50 as servers and static workstations, 51-100 as =
printers, and 101--200 as DHCP scope for PCs, and 201-254 for remote =
login DHCP scope (vpn, dialup, etc.)
Yes, I think a large private network would work this way. RFC 1918 =
wants it to work this way (imho).
--p
-----Original Message-----
From: Joel Jaeggli [mailto:joelja@bogus.com]
Sent: Wednesday, August 06, 2008 11:21 AM
To: Darden, Patrick S.
Cc: nanog@nanog.org
Subject: Re: was bogon filters, now "Brief Segue on 1918"
Darden, Patrick S. wrote:
> *randomly* from the reserved pool of private addresses, when
You're supposed to choose ula-v6 /48 prefixs randomly as well... Any=20
bets on whether that routinely happens?
While you're home can probably randomly allocate subnets out of a /8 or=20
/12 for a while without collisions, nobody that's actually building a=20
subnetting plan for a large private network is going to be able to get=20
away with that in v4.
