Preferred Path Route Graph Structure

Document Type Expired Internet-Draft (individual)
Authors Uma Chunduri  , Toerless Eckert 
Last updated 2021-04-01 (latest revision 2020-09-28)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines a graph structure for the Preferred Path Route (PPR) for IS-IS, OSPFv2 and OSPFv3 protocols. This structure helps further scale of the PPR and reduce domain level global entries needed in some data planes.


Uma Chunduri (
Toerless Eckert (

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