[64070] in North American Network Operators' Group
Re: Pitfalls of annoucing /24s
daemon@ATHENA.MIT.EDU (Phil Rosenthal)
Wed Oct 15 17:53:39 2003
In-Reply-To: <B3F9235672C543459FF9783503CC54B36B6D5C@cauexch01.cau.edu>
Cc: <nanog@merit.edu>, "'John Palmer'" <nanog@adns.net>
From: Phil Rosenthal <pr@isprime.com>
Date: Wed, 15 Oct 2003 17:42:21 -0400
To: "H. Michael Smith, Jr." <michael@awtechnologies.com>
Errors-To: owner-nanog-outgoing@merit.edu
On Oct 15, 2003, at 5:24 PM, H. Michael Smith, Jr. wrote:
>
>
> What about the /24's that many ISPs (especially tier 2-3) are assigning
> to multi-homed customers?  What about an IX or "critical infrastructure
> providers" that may be issued a /24 from ARIN (Policy 2001-3)?
>
As long as it's provider assigned, and your provider announces the 
supernet that the /24 is from, it will still work.  If you announce PI 
space out of the old class A space in /24's, many networks wont be able 
to reach you.