unequal cost load balancing?

[Otto Solares]

On Thu, Nov 26, 2009 at 09:03:30PM +0100, Ondrej Zajicek wrote:
> On Thu, Nov 26, 2009 at 12:54:15AM +0100, KORN Andras wrote:
> > Hi,
> > 
> > we have a 5Mbps symmetric microwave uplink with one static IP and a /30
> > subnet. We're contemplating getting an additional ADSL connection to serve
> > as backup. If the ISP cooperates, is there a way for me to load-balance and
> > fail over between these two connections using BIRD? If so, how?
> 
> Hmm, load-balancing and multipath is not implemented. The best thing you can do
> with BIRD is to have asymetric routing (one link preferred for upstream and
> the other for downstream), or prefix based load-balancing (some prefixes
> are preferred over one link and other prefixes are preferred over the other
> link).

Could you please describe prefering prefixes over one link with an
example please? I happen to need this but haven't figured out yet.
-
 Otto