Asymmetric Extended Route Optimization (AERO)
draft-templin-aerolink-74

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Last updated 2016-11-23
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Network Working Group                                    F. Templin, Ed.
Internet-Draft                              Boeing Research & Technology
Obsoletes: rfc5320, rfc5558, rfc5720,                  November 23, 2016
           rfc6179, rfc6706 (if
           approved)
Intended status: Standards Track
Expires: May 27, 2017

             Asymmetric Extended Route Optimization (AERO)
                     draft-templin-aerolink-74.txt

Abstract

   This document specifies the operation of IP over tunnel virtual links
   using Asymmetric Extended Route Optimization (AERO).  Nodes attached
   to AERO links can exchange packets via trusted intermediate routers
   that provide forwarding services to reach off-link destinations and
   redirection services for route optimization.  AERO provides an IPv6
   link-local address format that supports operation of the IPv6
   Neighbor Discovery (ND) protocol and links IPv6 ND to IP forwarding.
   Admission control and address/prefix provisioning are supported by
   the Dynamic Host Configuration Protocol for IPv6 (DHCPv6), while
   mobility management and route optimization are naturally supported
   through dynamic neighbor cache updates.  Although DHCPv6 and IPv6 ND
   messaging are used in the control plane, both IPv4 and IPv6 are
   supported in the data plane.  AERO is a widely-applicable tunneling
   solution especially well suited to mobile Virtual Private Networks
   (VPNs) and other applications as described in this document.

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
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   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 27, 2017.

Templin                   Expires May 27, 2017                  [Page 1]
Internet-Draft                    AERO                     November 2016

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Asymmetric Extended Route Optimization (AERO) . . . . . . . .   7
     3.1.  AERO Link Reference Model . . . . . . . . . . . . . . . .   7
     3.2.  AERO Node Types . . . . . . . . . . . . . . . . . . . . .   8
     3.3.  AERO Routing System . . . . . . . . . . . . . . . . . . .   9
     3.4.  AERO Interface Link-local Addresses . . . . . . . . . . .  11
     3.5.  AERO Interface Characteristics  . . . . . . . . . . . . .  12
     3.6.  AERO Interface Initialization . . . . . . . . . . . . . .  14
       3.6.1.  AERO Relay Behavior . . . . . . . . . . . . . . . . .  14
       3.6.2.  AERO Server Behavior  . . . . . . . . . . . . . . . .  15
       3.6.3.  AERO Client Behavior  . . . . . . . . . . . . . . . .  15
     3.7.  AERO Interface Neighbor Cache Maintenace  . . . . . . . .  15
     3.8.  AERO Interface Forwarding Algorithm . . . . . . . . . . .  17
       3.8.1.  Client Fowarding Algorithm  . . . . . . . . . . . . .  18
       3.8.2.  Server Fowarding Algorithm  . . . . . . . . . . . . .  18
       3.8.3.  Relay Fowarding Algorithm . . . . . . . . . . . . . .  19
     3.9.  AERO Interface Encapsulation and Re-encapsulation . . . .  19
     3.10. AERO Interface Decapsulation  . . . . . . . . . . . . . .  20
     3.11. AERO Interface Data Origin Authentication . . . . . . . .  20
     3.12. AERO Interface Packet Size Issues . . . . . . . . . . . .  21
     3.13. AERO Interface Error Handling . . . . . . . . . . . . . .  23
     3.14. AERO Router Discovery, Prefix Delegation and
           Autoconfiguration . . . . . . . . . . . . . . . . . . . .  26
       3.14.1.  AERO DHCPv6 and IPv6 ND Service Model  . . . . . . .  26
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