BGP decision process final illustration

1) Highest Local-Preference

2)Shortest AS-Path

3)Lowest Origin Type(IGP<BGP)

4)Lowest MED value(with the same next-hop AS)

5)E-BGP learned route over I-BGP learned

6)Lowest IGP cost to exit point(Hot-Potato)

7)Lowest router ID or BGP speaker

 其实也就第一步是选择最高的，其余步骤都是选择最低的。