Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-51

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Last updated 2020-05-20
Replaces draft-templin-aerolink
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Network Working Group                                    F. Templin, Ed.
Internet-Draft                              Boeing Research & Technology
Obsoletes: rfc5320, rfc5558, rfc5720,                       May 20, 2020
           rfc6179, rfc6706 (if
           approved)
Intended status: Standards Track
Expires: November 21, 2020

             Asymmetric Extended Route Optimization (AERO)
                    draft-templin-intarea-6706bis-51

Abstract

   This document specifies the operation of IP over tunnel virtual links
   using Asymmetric Extended Route Optimization (AERO).  AERO interfaces
   use an IPv6 link-local address format that supports operation of the
   IPv6 Neighbor Discovery (ND) protocol and links ND to IP forwarding.
   Prefix delegation/registration services are employed for network
   admission and to manage the routing system.  Multilink operation,
   mobility management, quality of service (QoS) signaling and route
   optimization are naturally supported through dynamic neighbor cache
   updates.  Standard IP multicasting services are also supported.  AERO
   is a widely-applicable mobile internetworking service especially
   well-suited to aviation services, intelligent transportation systems,
   mobile Virtual Private Networks (VPNs) and many other applications.

Status of This Memo

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   This Internet-Draft will expire on November 21, 2020.

Templin                 Expires November 21, 2020               [Page 1]
Internet-Draft                    AERO                          May 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Asymmetric Extended Route Optimization (AERO) . . . . . . . .  10
     3.1.  AERO Node Types . . . . . . . . . . . . . . . . . . . . .  10
     3.2.  The AERO Link . . . . . . . . . . . . . . . . . . . . . .  11
       3.2.1.  AERO Link Reference Model . . . . . . . . . . . . . .  11
       3.2.2.  AERO Link-Local Addresses (LLAs)  . . . . . . . . . .  14
       3.2.3.  AERO Unique Local Addresses (ULAs)  . . . . . . . . .  15
       3.2.4.  AERO Routing System . . . . . . . . . . . . . . . . .  16
       3.2.5.  AERO Link Encapsulation . . . . . . . . . . . . . . .  17
       3.2.6.  Segment Routing Topologies (SRTs) . . . . . . . . . .  19
       3.2.7.  Segment Routing To the AERO Link  . . . . . . . . . .  19
       3.2.8.  Segment Routing Within the AERO Link  . . . . . . . .  20
     3.3.  AERO Interface Characteristics  . . . . . . . . . . . . .  22
     3.4.  AERO Interface Initialization . . . . . . . . . . . . . .  27
       3.4.1.  AERO Server/Relay Behavior  . . . . . . . . . . . . .  27
       3.4.2.  AERO Proxy Behavior . . . . . . . . . . . . . . . . .  27
       3.4.3.  AERO Client Behavior  . . . . . . . . . . . . . . . .  27
       3.4.4.  AERO Bridge Behavior  . . . . . . . . . . . . . . . .  28
     3.5.  AERO Interface Neighbor Cache Maintenance . . . . . . . .  28
     3.6.  AERO Interface Encapsulation and Re-encapsulation . . . .  30
     3.7.  AERO Interface Decapsulation  . . . . . . . . . . . . . .  31
     3.8.  AERO Interface Data Origin Authentication . . . . . . . .  31
     3.9.  AERO Interface MTU and Fragmentation  . . . . . . . . . .  32
     3.10. AERO Interface Forwarding Algorithm . . . . . . . . . . .  34
       3.10.1.  Client Forwarding Algorithm  . . . . . . . . . . . .  34
       3.10.2.  Proxy Forwarding Algorithm . . . . . . . . . . . . .  35
       3.10.3.  Server/Relay Forwarding Algorithm  . . . . . . . . .  36
       3.10.4.  Bridge Forwarding Algorithm  . . . . . . . . . . . .  37
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