Re: weird BGP cisco-ism? [problem resolved]

[Chris Garner <cgarner () sni net>]

> >      I'd think prefix based filters would be more likely to be correct.
> > Since you have to explicitly list what you think you should be announcing
> > you protect against having routes you don't expect in your tables and
> > against having interactions that cause unexpected routes to get tagged as
> > announceable.
>
> OK, so then what do you do with BGP customers?  Ideally, you'd be filtering 
> the ingress advertisements from your customers.  Now you have to add those 
> prefixes to your egress filters as well.
>
> Using communities to accomplish this is much more efficient and "hands-off".
>
> -danny

        You can build your customer BGP filters off data in the IRR.  Make
it a requirement that BGP customers must keep that information up to date
(or do it for them).

-- 

                                -Chris (cgarner () sni net)