bgp best path confusion

From: oo IPX <oispxl_at_gmail.com>
Date: Wed, 29 Aug 2012 22:27:58 +0530

i have a hub and spoke topology, R1 being hub.

R1-is a Route reflector.

also, R1, R2 and R3 are fully meshed ibgp peers. with R1, R2 and R3
advertising networks 1.0.0.0/8, 2.0.0.0/8 and 3.0.0.0/8

*on what level of the bgp path decision making the following route is been
chosen?*

*R3(config-router)#do sh ip bgp 2.0.0.0
BGP routing table entry for 2.0.0.0/8, version 4
Paths: (2 available, best #2, table Default-IP-Routing-Table)
Flag: 0x820
  Not advertised to any peer
  Local
    10.1.12.2 (metric 1) from 10.1.13.1 (1.1.1.1)
      Origin IGP, metric 0, localpref 100, valid, internal
      Originator: 2.2.2.2, Cluster list: 1.1.1.1
  Local
    10.1.12.2 (metric 1) from 10.1.12.2 (2.2.2.2)
      Origin IGP, metric 0, localpref 100, valid, internal, best
*

   Network Next Hop Metric LocPrf Weight Path
*>i1.0.0.0 10.1.13.1 0 100 0 i
** i2.0.0.0 10.1.12.2 0 100 0 i
*>i 10.1.12.2 0 100 0 i*
*> 3.0.0.0 0.0.0.0 0 32768 i

Regards

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Received on Wed Aug 29 2012 - 22:27:58 ART

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