1998•Unpublished venueRequires access

IGP Flexible Algorithm

Peter Pšenák, Arkadiy Gulko, Shraddha Hegde, Ketan Talaulikar, Clarence Filsfils

Abstract

IGP protocols traditionally compute best paths over the network based on the IGP metric assigned to the links. Many network deployments use RSVP-TE based or Segment Routing based Traffic Engineering to enforce traffic over a path that is computed using different metrics or constraints than the shortest IGP path. This document proposes a solution that allows IGPs themselves to compute constraint based paths over the network. This document also specifies a way of using Segment Routing (SR) Prefix-SIDs and SRv6 locators to steer packets along the constraint-based paths.

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Key concepts: Computer science, Network packet, Computer network, Equal-cost multi-path routing, Routing protocol, Routing (electronic design automation), Path (computing), Constraint (computer-aided design)