Re: BGP Path Selection - eBGP vs iBGP

Hi,
IBGP --> AD 200
EBGP --> AD 20

HTH,

On 2/16/10, Garth Bryden <hacked.the.planet.on.28.8k.dialup_at_gmail.com> wrote:
> Hello Group!
>
> I have what is probably a fairly simple question, but I am slightly confused
> with my BGP Labs.
>
> I have a simple topology.
>
> R1 and R3 are in AS 1 and iBGP Peers
>
> R4 and R5 are in AS 2 and iBGP Peers
>
> R1 and R4 are eBGP Peers
>
> R3 and R5 are eBGP Peers
>
> I have the network 10.0.0.0/16 being advertised by R3
>
> On R5 I recieve the NLRI with two paths. One is eBGP via R3 the other iBGP
> via R4... R4 sends the iBGP prefix with a Local Preference of 100 and of
> course since it's external R3 doesn't send a Local Preference attribute...
> Now since the second method of best path selection is "Highest Local
> Preference" why do my routers choose eBGP over iBGP?
>
> Here is the BGP RIB.....
>
> Network Next Hop Metric LocPrf Weight Path
> * i10.0.0.0/16 155.1.45.4 0 100 0 2 i
> *> 155.1.0.3 0 2 i
>
>
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-- 
Best Regards,
Tolulope.
Blogs and organic groups at http://www.ccie.net