redirecting overseas requests to local servers

[Patrick Greenwell]

On Mon, 6 Sep 1999, Michael Voight wrote:

> Patrick Greenwell wrote:
> > 
> > On Mon, 6 Sep 1999, Michael Voight wrote:
> > 
> > > > UltraDNS provides a service where you can reach the *topologically*
> > > > closest server according to BGP. http://www.ultradns.com.
> > > >
> > >
> > > Yes.. But this means the clients need to be near a server running bgp
> > > that participates in the server's bgp.
> > 
> > Nope.
> 
> If the client is in a domain served by a bgp router, how would this
> work?

Hey, aren't you the guy that works for Cisco the routing company here? ;-)

Basically: (beware, bad ascii art follows)

                                       
+--------+      +-----+       +-----+        +-----+      +------+
| client |<---->| IGP |<----->| BGP |<------>| BGP |<---->|server|
+--------+      +-----+       +-----+<-      +-----+      +------+
                                       \ 
                                         \ 
                                           \   +-----+      +------+ 
                                             ->| BGP |<---->|server| 
                                               +-----+      +------+




The above is just for illustration, it is abbreviated and not intended to
be complete, correct for every possible configuration,
all-encompassing, etc. etc. The "BGP" portions could be any number of hops
away from one another, they don't have to be direct BGP neighbors, and
most likely aren't going to be. The client doesn't have to know anything
about BGP, as at some point their upstream will.