2020•Unpublished venueRequires access

BGP Link-State Extensions for BGP-only Fabric

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

Abstract

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.

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Key concepts: Border Gateway Protocol, Computer network, Computer science, Routing protocol, Routing (electronic design automation), Default-free zone, Network mapping, State (computer science)