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 * 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@oanet.com * 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