Segment Routing for Resource Guaranteed Virtual Networks
draft-dong-spring-sr-for-enhanced-vpn-09

The information below is for an old version of the document
Document Type Active Internet-Draft (individual)
Authors Jie Dong  , Stewart Bryant  , Takuya Miyasaka  , Yongqing Zhu  , Fengwei Qin  , Zhenqiang Li  , Francois Clad 
Last updated 2020-07-13 (latest revision 2020-06-22)
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SPRING Working Group                                             J. Dong
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                               S. Bryant
Expires: January 14, 2021                         Futurewei Technologies
                                                             T. Miyasaka
                                                        KDDI Corporation
                                                                  Y. Zhu
                                                           China Telecom
                                                                  F. Qin
                                                                   Z. Li
                                                            China Mobile
                                                                 F. Clad
                                                           Cisco Systems
                                                           July 13, 2020

        Segment Routing for Resource Guaranteed Virtual Networks
                draft-dong-spring-sr-for-enhanced-vpn-09

Abstract

   This document describes the mechanism to associate network resource
   attributes to Segment Routing Identifiers (SIDs).  Such SIDs are
   referred to as resource-aware SIDs in this document.  The resource-
   aware SIDs retain their original forwarding semantics, but with the
   additional semantics to identify the set of network resources
   available for the packet processing action.  The resource-aware SIDs
   can therefore be used to build SR paths with a set of reserved
   network resources.  In addition, the resource-aware SIDs can also be
   used to build SR based virtual networks, which provide the network
   topology and resource attributes required by customers or services.
   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
   Task Force (IETF).  Note that other groups may also distribute

Dong, et al.            Expires January 14, 2021                [Page 1]
Internet-Draft                 SR for VPN+                     July 2020

   working documents as Internet-Drafts.  The list of current Internet-
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   This Internet-Draft will expire on January 14, 2021.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Segment Routing with Topology and Resource Awareness  . . . .   4
     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  . . . . . . . . .  12
   5.  Benefits of the Proposed Mechanism  . . . . . . . . . . . . .  12
   6.  Service Assurance . . . . . . . . . . . . . . . . . . . . . .  13
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   9.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
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