[c-nsp] Late night BGP puzzler

Stephen Wilcox steve.wilcox at packetrade.com
Wed Aug 1 06:17:28 EDT 2007


On Wed, Aug 01, 2007 at 08:54:16AM +0200, Gert Doering wrote:
> Hi,
> 
> On Wed, Aug 01, 2007 at 04:43:20PM +1000, Gunjan GANDHI (BR/EPA) wrote:
> >  Because ebgp routes are preferred over ibgp routes.
> 
> Thats is a tie breaker if the MED is equal.  Which it isn't.
> 
> So indeed this is puzzling.

Um no, MED isnt compared as the paths are different so yes, ebgp is being preferred.

According to Cisco's documentation the cost community is compared after the ebgp/ibgp step so it will always prefer the ebgp path.

Steve


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