Nov 25, 2009

BGP Best Path Criteria

Updated from Cisco 360 Workshop 1 Vol.1

1. Highest weight(default=0)
2. Highest local preference(default=100)
3. Locally originated(Next hop:0.0.0.0, weight=32768)
4. Shortest AS path length
5. Lowest origin code(IGP < EGP < incomplete)
6. Lowest MED(default=0)
7. EBGP over IBGP
8. If internal, prefer path with lowest IGP metric to next hop
9. If external, consider multipath (NEW!)
10. If external, prefer old one
11. Lowest router ID or originator ID
12. Minimum cluster list length (NEW!)
13. Lowest neighbor address

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