Extension of Transport Aware Mobility in Data Network
draft-mcd-rtgwg-extension-tn-aware-mobility-00

Document Type Active Internet-Draft (individual)
Authors Kausik Majumdar  , Uma Chunduri  , Linda Dunbar 
Last updated 2020-10-31
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RTG Working Group                                           K. Majumdar
Internet Draft                                                CommScope
Intended status: Informational                              U. Chunduri
Expires: April 30, 2021                                       L. Dunbar
                                                              Futurewei
                                                       October 31, 2020

           Extension of Transport Aware Mobility in Data Network
              draft-mcd-rtgwg-extension-tn-aware-mobility-00

Abstract

   The existing Transport Network Aware Mobility for 5G [TN-AWARE-
   MOBILITY] draft specifies a framework for mapping the 5G mobile
   systems Slice and Service Types (SSTs) to corresponding underlying
   network paths in IP and Layer 2 Transport networks.The focus of that
   work is limited to the mobility domain and transport network
   characteristics till the UPF and doesn't go beyond the UPF to the
   Data Network.

   To maintain E2E transport network characteristics the framework
   needs to be extended beyond UPF. This document describes a framework
   for extending the mobility aware transport network characteristics
   from the UPF through the Data Network.

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xxx, et al.             Expires April 30, 2021                 [Page 1]
Internet-Draft      Extension of TN Aware Mobility         October 2020

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Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................3
   3. Framework for Extension of Transport Network Aware Mobility....4
   4. Mobility Packet Transition to the Data Network.................5
   5. Transport Network Characteristics Mapping to SR-TE Paths.......7
      5.1. Extend TN Aware Mobility for BGP SR-TE Policy.............8
      5.2. Extend TN Aware Mobility for SR-PCE Controller...........12
      5.3. Extend TN Aware Mobility for SR-TE Controller............15
   6. Mapping of TN Characteristics on SD-WAN Edge Node.............17
   7. IANA Considerations...........................................20
   8. Security Considerations.......................................20
   9. References....................................................20
      9.1. Normative References.....................................20
      9.2. Informative References...................................20
   10. Acknowledgments..............................................21
   Authors' Addresses...............................................22

Majumdar, et al.        Expires April 30, 2021                 [Page 2]
Internet-Draft      Extension of TN Aware Mobility         October 2020

1. Introduction

   The [TN-AWARE-MOBILITY] draft defines the transport path
   characteristics in backhaul, midhaul, and fronthaul segments between
   the radio side network functions and user plane functions (UPF). It
   describes how various transport network underlay routing mechanisms
   apply to the framework laid out including RSVP-TE, SR, and also a
   data plane agnostic integrated routing and TE mechanism - Preferred
   Path Routing (PPR) to map the network slice properties into the
   IP/L2 transport network.

   The current [TN-AWARE-MOBILITY] draft doesn't extend the transport
   network characteristics from the UPF through the Data Network. If
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