BGP Link-State Extensions for BGP-only Fabric

Document Type Replaced Internet-Draft (idr WG)
Authors Ketan Talaulikar  , Clarence Filsfils  , krishnaswamy ananthamurthy  , Shawn Zandi  , Gaurav Dawra  , Muhammad Durrani 
Last updated 2021-02-04 (latest revision 2020-09-08)
Replaced by draft-ietf-idr-bgp-ls-bgp-only-fabric
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state Adopted by a WG
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IESG IESG state Replaced by draft-ietf-idr-bgp-ls-bgp-only-fabric
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


BGP is used as the only routing protocol in some networks today. In such networks, it is useful to get a detailed view of the nodes and underlying links in the topology along with their attributes similar to one available when using link state routing protocols. Such a view of a BGP-only fabric enables use cases like traffic engineering and forwarding of services along paths other than the BGP best path selection. This document defines extensions to the BGP Link-state address-family (BGP-LS) and the procedures for advertisement of the topology in a BGP-only network. It also describes a specific use-case for traffic engineering based on Segment Routing.


Ketan Talaulikar (
Clarence Filsfils (
krishnaswamy ananthamurthy (
Shawn Zandi (
Gaurav Dawra (
Muhammad Durrani (

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