BGP Path Analyzer
Analyze BGP path selection decisions and understand why specific routes are chosen as best paths.
Add BGP Route
Best Path Selection
Add routes to analyze path selection
BGP Route Table
| Status | Network | Next Hop | AS Path | Local Pref | MED | Origin | Weight | Type | Actions |
|---|---|---|---|---|---|---|---|---|---|
| No routes added yet | |||||||||
BGP Decision Process
BGP Best Path Selection Algorithm
- Weight: Prefer highest weight (Cisco-specific)
- Local Preference: Prefer highest local preference
- Local Origination: Prefer locally originated routes
- AS Path: Prefer shortest AS path
- Origin: Prefer IGP > EGP > INCOMPLETE
- MED: Prefer lowest MED (if comparing same neighboring AS)
- External vs Internal: Prefer eBGP over iBGP
- IGP Metric: Prefer lowest IGP metric to next-hop
- Multipath: If multipath enabled, install multiple paths
- Oldest Route: Prefer oldest external route
- Router ID: Prefer lowest BGP router ID
- Cluster Length: Prefer shortest cluster list
- Neighbor Address: Prefer lowest neighbor IP address