[51954] in North American Network Operators' Group
Re: ISPs who de-aggregate intentionally?
daemon@ATHENA.MIT.EDU (Jeffrey Haas)
Tue Sep 10 18:05:36 2002
Date: Tue, 10 Sep 2002 18:05:05 -0400
From: Jeffrey Haas <jhaas@nexthop.com>
To: nanog@merit.edu
In-Reply-To: <20020910170651.P19996@nexthop.com>; from jhaas@nexthop.com on Tue, Sep 10, 2002 at 05:06:51PM -0400
Errors-To: owner-nanog-outgoing@merit.edu
As a quick followup to my request:
On Tue, Sep 10, 2002 at 05:06:51PM -0400, Jeffrey Haas wrote:
> As part of this effort, if anyone is aware of ISPs who intentionally
> de-aggregate routes and could contact me to share some of the
> reasoning and their methodologies behind this, I would greatly
> appreciate it.
Explicit de-aggregation, in this case, is taking an existing announcement
and creating more specific announcements from it. For example,
taking 10/8 and creating (where it didn't exist before) 10/9 and 10.128/9.
The leaking of more specific routes that actually exist in your
network is more a case of failing to aggregate, even if the assiged
internal networks are a result of taking your assigned block and
breaking it into several subnets.
Thanks for all the responses thus far.
--
Jeff Haas
NextHop Technologies
