Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-94

Document Type Active Internet-Draft (individual)
Author Fred Templin 
Last updated 2021-02-09
Replaces draft-templin-aerolink
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Network Working Group                                    F. Templin, Ed.
Internet-Draft                              Boeing Research & Technology
Obsoletes: rfc5320, rfc5558, rfc5720,                   February 9, 2021
           rfc6179, rfc6706 (if
           approved)
Intended status: Standards Track
Expires: August 13, 2021

             Asymmetric Extended Route Optimization (AERO)
                    draft-templin-intarea-6706bis-94

Abstract

   This document specifies an Asymmetric Extended Route Optimization
   (AERO) service for IP internetworking over Overlay Multilink Network
   (OMNI) interfaces.  AERO/OMNI 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, multicast, quality
   of service (QoS) signaling and route optimization are naturally
   supported through dynamic neighbor cache updates.  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

   This Internet-Draft is submitted in full conformance with the
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   This Internet-Draft will expire on August 13, 2021.

Templin                  Expires August 13, 2021                [Page 1]
Internet-Draft                    AERO                     February 2021

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Asymmetric Extended Route Optimization (AERO) . . . . . . . .  11
     3.1.  AERO Node Types . . . . . . . . . . . . . . . . . . . . .  11
     3.2.  The AERO Service over OMNI Links  . . . . . . . . . . . .  12
       3.2.1.  AERO/OMNI Reference Model . . . . . . . . . . . . . .  12
       3.2.2.  Addressing and Node Identification  . . . . . . . . .  15
       3.2.3.  AERO Routing System . . . . . . . . . . . . . . . . .  16
       3.2.4.  OMNI Link Segment Routing . . . . . . . . . . . . . .  18
       3.2.5.  Segment Routing Topologies (SRTs) . . . . . . . . . .  22
       3.2.6.  Segment Routing For OMNI Link Selection . . . . . . .  23
       3.2.7.  Segment Routing Within the OMNI Link  . . . . . . . .  23
     3.3.  OMNI Interface Characteristics  . . . . . . . . . . . . .  24
     3.4.  OMNI Interface Initialization . . . . . . . . . . . . . .  26
       3.4.1.  AERO Server/Relay Behavior  . . . . . . . . . . . . .  26
       3.4.2.  AERO Proxy Behavior . . . . . . . . . . . . . . . . .  26
       3.4.3.  AERO Client Behavior  . . . . . . . . . . . . . . . .  27
       3.4.4.  AERO Bridge Behavior  . . . . . . . . . . . . . . . .  27
     3.5.  OMNI Interface Neighbor Cache Maintenance . . . . . . . .  27
       3.5.1.  OMNI Neighbor Interface Attributes  . . . . . . . . .  29
       3.5.2.  OMNI Neighbor Advertisement Message Flags . . . . . .  30
     3.6.  OMNI Interface Encapsulation and Re-encapsulation . . . .  30
     3.7.  OMNI Interface Decapsulation  . . . . . . . . . . . . . .  32
     3.8.  OMNI Interface Data Origin Authentication . . . . . . . .  32
     3.9.  OMNI Adaptation Layer and OMNI Interface MTU  . . . . . .  32
     3.10. OMNI Interface Forwarding Algorithm . . . . . . . . . . .  33
       3.10.1.  Client Forwarding Algorithm  . . . . . . . . . . . .  34
       3.10.2.  Proxy Forwarding Algorithm . . . . . . . . . . . . .  35
       3.10.3.  Server/Relay Forwarding Algorithm  . . . . . . . . .  36
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