BGP-LS Advertisement of Segment Routing Service Segments
draft-dawra-idr-bgp-ls-sr-service-segments-00

Document Type Active Internet-Draft (individual)
Last updated 2018-07-16
Replaces draft-dawra-idr-bgp-sr-service-chaining
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Inter-Domain Routing                                       G. Dawra, Ed.
Internet-Draft                                                  LinkedIn
Intended status: Standards Track                             C. Filsfils
Expires: January 17, 2019                                  Cisco Systems
                                                              D. Bernier
                                                             Bell Canada
                                                               J. Uttaro
                                                                    AT&T
                                                             B. Decraene
                                                                  Orange
                                                              H. Elmalky
                                                                Ericsson
                                                                   X. Xu
                                                                 Alibaba
                                                                 F. Clad
                                                           K. Talaulikar
                                                           Cisco Systems
                                                           July 16, 2018

        BGP-LS Advertisement of Segment Routing Service Segments
             draft-dawra-idr-bgp-ls-sr-service-segments-00

Abstract

   BGP Link-State (BGP-LS) enables distribution of topology information
   from the network to a Path Computation Engine (PCE) or any
   controller/application in general so it can learn the network
   topology.  Service functions are deployed as virtualized elements
   along with network elements or on servers in data centers.  The
   advertisement of such attached service capabilities along with the
   network nodes that they are attached to or associated with enable
   their discovery and for programming of service paths that use these
   service functions.  Segment Routing (SR) bring in the concept of
   segments which can be topological or service instructions.  SR
   Policies enable setup of paths which are a mix of topological and
   service segments.

   This document specifies the extensions to BGP-LS for discovery and
   advertisement of service segments so as to enable setup of service
   programming paths using Segment Routing.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Dawra, et al.           Expires January 17, 2019                [Page 1]
Internet-Draft  BGP-LS Extensions for SR Service Segments      July 2018

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on January 17, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  BGP-LS Extensions for Service Chaining  . . . . . . . . . . .   4
   3.  Illustration  . . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Service Type Table  . . . . . . . . . . . . . . . . . . .   7
     4.2.  Segment routing function Identifier(SFI)  . . . . . . . .   8
   5.  Manageability Considerations  . . . . . . . . . . . . . . . .   8
   6.  Operational Considerations  . . . . . . . . . . . . . . . . .   8
     6.1.  Operations  . . . . . . . . . . . . . . . . . . . . . . .   9
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   8.  Conclusions . . . . . . . . . . . . . . . . . . . . . . . . .   9
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