BGP announcements and small providers

David Papp david at
Tue Feb 25 15:32:04 UTC 1997

Isn't it true though that some upstream providers (such as Sprint) filter
out anything smaller than /19 and will not carry those routes? Therefore
in this example, Sprint clients would not be able to see these smaller
providers and vice versa unless he agregates them to /19 or higher and
then announces the routes himself?


*  David Papp         |    4907-99 Street     |      Ph: +1.403.430.0811  *
*  Manager            |   Edmonton, Alberta   |     Fax: +1.403.436.9963  *
*  OA Internet Inc.   |    Canada, T6E 4Y1    |   Email: david at  *

On Tue, 25 Feb 1997, Paul Ferguson wrote:
> If the downstream customers are not multihomed, there's no reason
> to run BGP with them; a simple default/static will work just fine.
> Also, if you suballocate addresses to them from within your address
> space, you can aggregate them.
> This is generally considered a Good Thing.
> - paul

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