BGP-LS Extension for Inter-AS Topology Retrieval

Document Type Replaced Internet-Draft (idr WG)
Authors Aijun Wang  , Huaimo Chen 
Last updated 2018-10-20 (latest revision 2018-08-13)
Replaced by draft-ietf-idr-bgpls-inter-as-topology-ext
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG
Revised I-D Needed - Issue raised by WG
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IESG IESG state Replaced by draft-ietf-idr-bgpls-inter-as-topology-ext
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This Internet-Draft is no longer active.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 the process to build BGP-LS key parameters in Native IP multi-domain scenario and defines some new inter-AS TE related TLVs for BGP-LS to let SDN controller retrieve the network topology automatically under various environments. Such process and extension can expand the usage of BGP-LS protocol to multi- domain, enable the network operator to collect the connection relationship between different AS domains and then calculate the overall network topology automatically based on the information provided by BGP-LS protocol.


Aijun Wang (
Huaimo Chen (

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