BGP/MPLS Traffic Blackhole Avoidance
draft-asati-bgp-mpls-blackhole-avoidance-00

Document Type Replaced Internet-Draft (individual)
Author Rajiv Asati 
Last updated 2007-02-26
Replaced by draft-asati-idr-bgp-bestpath-selection-criteria
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IESG IESG state Replaced by draft-asati-idr-bgp-bestpath-selection-criteria
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-asati-bgp-mpls-blackhole-avoidance-00.txt

Abstract

In any BGP based MPLS network such as MPLS VPN [RFC4364], an ingress PE router would continue to attract traffic from the CE router by advertising the prefix reachability, even though the Label Switched Path (LSP) from the ingress PE router to the egress PE router may be broken. This causes the VPN traffic to be dropped inside the MPLS VPN network. This document proposes a framework to make BGP consider the MPLS path availability to the "NEXT_HOP" (i.e. egress PE router) during the BGP bestpath candidate selection process. This document also defines a local database for storing the MPLS path health information for one or more IP prefixes and its interaction with BGP.

Authors

Rajiv Asati (rajiva@cisco.com)

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