Segment Routing for Resource Partitioned Virtual Networks
draft-dong-spring-sr-for-enhanced-vpn-06

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Document Type Active Internet-Draft (individual)
Authors Jie Dong  , Stewart Bryant  , Takuya Miyasaka  , Yongqing Zhu  , Fengwei Qin  , Zhenqiang Li 
Last updated 2019-12-16
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SPRING Working Group                                             J. Dong
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                               S. Bryant
Expires: June 18, 2020                            Futurewei Technologies
                                                             T. Miyasaka
                                                        KDDI Corporation
                                                                  Y. Zhu
                                                           China Telecom
                                                                  F. Qin
                                                                   Z. Li
                                                            China Mobile
                                                       December 16, 2019

       Segment Routing for Resource Partitioned Virtual Networks
                draft-dong-spring-sr-for-enhanced-vpn-06

Abstract

   This document describes the mechanism to associate Segment Routing
   Identifiers (SIDs) with network resource attributes.  The resource-
   aware SIDs retain their original functionality, with the additional
   semantics of identifying the set of network resources available for
   the packet processing action.  These SIDs can be used to build SID
   lists with reserved network resources, which can be used for many
   network scenarios.  One typical use case is to provide SR virtual
   networks with required network topology and resource attributes.  The
   proposed mechanism is applicable to both segment routing with MPLS
   data plane (SR-MPLS) and segment routing with IPv6 data plane (SRv6).

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].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
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Dong, et al.              Expires June 18, 2020                 [Page 1]
Internet-Draft                 SR for VPN+                 December 2019

   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 18, 2020.

Copyright Notice

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   document authors.  All rights reserved.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Segment Routing with Topology and Resource Awareness  . . . .   3
     2.1.  SR-MPLS . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  SRv6  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Control Plane Considerations  . . . . . . . . . . . . . . . .   6
   4.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Virtual Network Topology and Resource Computation . . . .   8
     4.2.  Network Resource and SID Allocation . . . . . . . . . . .   8
     4.3.  Construction of SR based Virtual Networks . . . . . . . .  10
     4.4.  Service to SR Virtual Network Mapping . . . . . . . . . .  11
     4.5.  Virtual Network Visibility to Customer  . . . . . . . . .  11
   5.  Benefits of the Proposed Mechanism  . . . . . . . . . . . . .  12
   6.  Service Assurance . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     11.2.  Informative References . . . . . . . . . . . . . . . . .  14
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