ISP Filter Policies--Effect is what?
John Fraizer
nanog at Overkill.EnterZone.Net
Tue May 8 18:43:33 UTC 2001
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
providers.
><snip>
>Site BGP Advertisement to ISP
>Amsterdam 169.61.201.0/24 AMSISP
>Austin 169.61.111.0/24 Genuity & Internap
>SanFran 169.61.119.0/24 Genuity & Internap
>Tokyo 169.61.202.0/24 TOKISP
>Sydney 169.61.156.0/24 SYDISP
---
John Fraizer
EnterZone, Inc
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