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Re: BGP announcements and small providers

  • From: Paul Ferguson
  • Date: Tue Feb 25 08:33:42 1997

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

At 08:06 AM 2/25/97 -0500, Avi Freedman wrote:

>
>I think the general feeling is that if the customer is multi-homed, there's
>going to be another route announcement for them anyway - whether it's a 
>/23, /24, or /16 or /17.
>
>If the customer isn't multi-homed, and you're their only path, then:
>
>a) If you BGP with them and pass it on to the global 'net, that path
>   will flap if the line goes up or down.  This is considered bad.
>
>b) There's no point, if that route is out of your address space, in
>   announcing the more specific if there's no extra path to them if
>   their connection to you goes down.
>

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