Border Gateway Protocol - Link State (BGP-LS) Extensions for Segment Routing

Segment Routing (SR) allows for a flexible definition of end-to-end paths by encoding paths as sequences of topological subpaths, called "segments". These segments are advertised by routing protocols, e.g., by the link-state routing protocols (IS-IS, OSPFv2, and OSPFv3) within IGP topologies. This document defines extensions to the Border Gateway Protocol Link State (BGP-LS) address family in order to carry SR information via BGP. Stream: Internet Engineering Task Force (IETF) RFC: 9085 Category: Standards Track Published: August 2021 ISSN: 2070-1721 Authors: S. Previdi Huawei Technologies K. Talaulikar, Ed. Cisco Systems, Inc. C. Filsfils Cisco Systems, Inc. H. Gredler RtBrick Inc. M. Chen Huawei Technologies Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at . https://www.rfc-editor.org/info/rfc9085 Copyright Notice Copyright (c) 2021 IETF Trust and the persons identified as the document authors. All rights reserved. Previdi, et al. Standards Track Page 1 This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents ( ) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. https://trustee.ietf.org/license-info Table of