[c-nsp] BGP Route selection

[Gert Doering]

Hi,

On Fri, May 23, 2008 at 03:08:54PM +0100, Gary Roberton wrote:
> Router A BGP table entry is shown here;
> 
> *  90.0.0.0         10.40.1.6               50             0 64604 1000 i
> 
> *>                  10.40.1.2                              0 64603 1000 i

Ah.  Different next-hop ASes.

You need to configure "bgp always-compare-med" or "bgp deterministic-med"
to take the MED into account if the neighbour AS is not the same.

Otherwise MED is ignored (because by original design, it's "multi exit
discriminator", to be used for multiple paths to the *same* neighbour AS).

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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