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Re: ISP Filter Policies--Effect is what?
From: John Fraizer <nanog () Overkill EnterZone Net>
Date: Tue, 8 May 2001 14:43:33 -0400 (EDT)

On Tue, 8 May 2001, Stephen J. Wilcox wrote:

if you have a /16 why would it be broken down to /24? i would assume the
only reason you advertise /24 is because that is the size of your
assignment from the NIC, in which case you cannot advertise the /16.

if you do own the /16 then yes of course you can advertise it.

Stephen, you neglected to look at the big picture.  The "organization" has
the /16 but has sites spread out all over the planet and has assigned
/24's to them.  Additionally, they connect into the global net via diverse

Site                    BGP Advertisement       to      ISP
Amsterdam              AMSISP
Austin         Genuity & Internap
SanFran         Genuity & Internap
Tokyo                  TOKISP
Sydney         SYDISP

John Fraizer
EnterZone, Inc

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