[AusNOG] Downstream BGP Config

[Julien Goodwin]

On 01/05/12 18:50, James Mcintosh wrote:
> Hi Noggers,
> 
> We use BGP upstream with our upstream carriers but now for the first
> time we have been asked by one of our larger customers to allow them to
> advertise their own IP block and AS number.
> 
> We've never had a customer with this requirement before.
> 
> I'm hoping some of the experienced admins on the list could comment on
> what we need to consider.
> 
> Also a sample config for IOS would be super helpful as my BGP knowledge
> is pretty basic.

I'll add one thing to what Macca said.

Have a plan for *when* someone advertises the internet to you and you
accept it (eg, Telstra/Dodo just recently).

Pretty much every serious BGP managing engineer has done this at one
point, even if only by not properly filtering peers[1].

Do you know how to troubleshoot BGP down due to max prefixes? Do you
have a *printed* copy of the 24/7 NOC lines for all your transit
providers so you can come back once they've cut you off?

Thanks,
Julien

1: No I don't care if you, $READER, never have, the vast majority of
engineers have at least configured up such a scenario, even if they've
not been burnt by it (yet).