Path validation toward BGP next-hop with AUTO-BFD

Document Type Expired Internet-Draft (candidate for idr WG)
Authors Jerome Durand  , David Freedman 
Last updated 2015-10-14 (latest revision 2015-03-09)
Stream Internet Engineering Task Force (IETF)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Call For Adoption By WG Issued
Document shepherd No shepherd assigned
IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a solution called AUTO-BFD, that automatically initiates BFD sessions for BGP next-hops. This makes it possible to avoid blackholing scenarios when a BGP peer is not the BGP next-hop, especially on Internet eXchange Points (IXPs) when BGP Route-Servers are deployed. When they are configured with this mechanism, routers can automatically try to establish a new adjacency for every new BGP next-hop. BGP routes are then checked against the state of the BFD session for the corresponding next-hop. Foreword A placeholder to list general observations about this document.


Jerome Durand (
David Freedman (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)