[110034] in North American Network Operators' Group
Re: What is the most standard subnet length on internet
daemon@ATHENA.MIT.EDU (Danny McPherson)
Sat Dec 20 12:43:06 2008
From: Danny McPherson <danny@tcb.net>
To: lionair@samsung.com
In-Reply-To: <15850784.26571229661837046.JavaMail.weblogic@epml12>
Date: Sat, 20 Dec 2008 10:42:47 -0700
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
On Dec 18, 2008, at 9:43 PM, =C1=A4=C4=A1=BF=B5 wrote:
> Suresh,
>
> Yes, I guess my concern is close to the second meaning.
>
> It seems so simple. Currently annoucement of /24 seems to be okey, =20
> most upstream providers accept this.
> However I wonder if there is any ground rule based on any standard =20
> or official recommandation.
> If there is some standardized rule about prefix length to be =20
> annouced, I will make my bgp & IP allocation policy of
> each data center of my company, and I will be able to more fairly =20
> and squarely speak to my customer like this
> "You have to change your server's IP address if you want move your =20
> server to other place"
Some useful guidance is provided here (and in
subsequent references) as well:
An Architecture for IP Address Allocation with CIDR
<http://tools.ietf.org/html/rfc1518>
Classless Inter-Domain Routing (CIDR): an Address Assignment and =20
Aggregation Strategy
<http://tools.ietf.org/html/rfc1519>
Network Renumbering Overview
<http://tools.ietf.org/html/rfc2071>
A Framework for Inter-Domain Route Aggregation
<http://tools.ietf.org/html/rfc2519>
HTH,
-danny=
