Re: .ORG problems this evening

["Stephen J. Wilcox" <steve () telecomplete co uk>]

On Thu, 18 Sep 2003, Todd Vierling wrote:

> On Thu, 18 Sep 2003, E.B. Dreger wrote:
>
> : TV> Date: Thu, 18 Sep 2003 10:05:15 -0400 (EDT)
> : TV> From: Todd Vierling
> :
> : TV> DNS site A goes down, but its BGP advertisements are still in
> : TV> effect.
> :
> : Or are they?
>
> I couldn't know for sure from some sites, but traceroutes sure got there.
> That would imply that (at their end) the advertisements were still up.
>
> BGP has no way to know that an internal network problem occurred.  If
> someone mistakenly tripped over a network cable that disconnected DNS
> clusters from a router, how would the router know to drop anycast
> advertisements?
>
> (Sure, you could run zebra on the cluster.  But what about if the name
> server SEGVs?  There's a lot of possible scenarios....)

ALmost there.. just make sure your zebra IGPs are redistributing to your BGP so 
that a failure such as that knocks out the bgp too

Steve