Introduction

BGP Best External is a feature which distributes backup paths within an iBGP for eBGP paths. Usually the edge eBGP routers only send the best path and iBGP sessions only see the selected best path. Best External feature provides for an active/backup routes.

BGP Best External is a feature which distributes the eBGP best route to other iBGP neighbors as a backup path. Usually all routers will decide on the same bes

BGP Best External

Advertises best EBGP path into IBGP even if not using it as overall best.
In contract Add-Path is only used for iBGP.

Additional Resources

Advertisement of the best external route in draft-ietf-idr-best-external-05 - IETF

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Introduction

BGP Best External

Additional Resources

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