OSPF extension for 5G Edge Computing Service
draft-dunbar-lsr-5g-edge-compute-ospf-ext-01

Document Type Active Internet-Draft (individual)
Authors Linda Dunbar  , Huaimo Chen 
Last updated 2020-11-02
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Network Working Group                                L. Dunbar
Internet Draft                                         H. Chen
Intended status: Standard                            Futurewei
Expires: May 2, 2021

                                              November 2, 2020

          OSPF extension for 5G Edge Computing Service
          draft-dunbar-lsr-5g-edge-compute-ospf-ext-01

Abstract

   This draft describes an OSPF extension that can distribute
   the 5G Edge Computing App running status and environment,
   so that other routers in the 5G Local Data Network can make
   intelligent decision on optimized forwarding of flows from
   UEs. The goal is to improve latency and performance for 5G
   Edge Computing services.

Status of this Memo

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   the provisions of BCP 78 and BCP 79.

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Internet-Draft     OSPF Extension for 5G EC Service

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Table of Contents

   1. Introduction........................................... 3
      1.1. 5G Edge Computing Background...................... 3
      1.2. Problem#1: ANYCAST in 5G EC Environment........... 4
      1.3. Problem #2: Unbalanced Anycast Distribution due to
      UE Mobility............................................ 5
      1.4. Problem 3: Application Server Relocation.......... 6
   2. Conventions used in this document...................... 6
   3. OSPF Extension for 5G EC............................... 7
      3.1. Solution Overview................................. 7
      3.2. IP Layer Metrics to Gauge Application Behavior.... 9
      3.3. To Equalize among Multiple ANYCAST Locations..... 10
      3.4. OSPF Protocol Extension to advertise Load &
      Capacity.............................................. 11
      3.5. Reason for using IGP Based Solution:............. 11
      3.6. OSPF Extension Using TE Stub Link................ 12
      3.7. Aggregated Link Cost Solution.................... 15
   4. Soft Anchoring of an ANYCAST Flow..................... 16

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Internet-Draft     OSPF Extension for 5G EC Service

   5. Manageability Considerations.......................... 18
   6. Security Considerations............................... 18
   7. IANA Considerations................................... 18
   8. References............................................ 18
      8.1. Normative References............................. 18
      8.2. Informative References........................... 19
   9. Acknowledgments....................................... 20

1. Introduction

   This document describes an OSPF extension that can
   distribute the 5G Edge Computing App running status and
   environment, so that other routers in the 5G Local Data
   Network can make intelligent decision on optimized
   forwarding of flows from UEs. The goal is to improve
   latency and performance for 5G Edge Computing services..

1.1. 5G Edge Computing Background

   As described in [5G-EC-Metrics], one Application can have
   multiple Application Servers hosted in different Edge
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