[c-nsp] Choosing iBGP over eBGP

[Joe Provo]

On Sun, Oct 08, 2006 at 03:17:04PM +0800, Kanagaraj Krishna wrote:
> Hi,
>    I have a problem where an eBGP path is being selected over an 
> iBGP path, although the latter is better option (shorter AS hop 
> and better latency). From my understanding the iBGP vs eBGP selection 
> criteria is way below the higher priority of shorter AS path hop 
> selection criteria. Am i right? 

You are conflating two steps of the decision process. External vs 
internal as a selction criteria is relevant for origin codes only,
when taking a walk through the BGP tabel to decide what gets put 
into the routing table.

> I've even tried to lower the local preference for the eBGP path 
> without much success. 
> Any tips out there that I can use to make this work? Thanks.

What you're describing sounds like you are running with default 
administrative distance.  Refer to to:
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml#topic2

Cheers,

Joe

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