Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-17
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Network Working Group F. Templin, Ed.
Internet-Draft Boeing Research & Technology
Obsoletes: rfc5320, rfc5558, rfc5720, August 12, 2019
rfc6179, rfc6706 (if
approved)
Intended status: Standards Track
Expires: February 13, 2020
Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-17.txt
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, mobile Virtual Private Networks
(VPNs) and many other applications.
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
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on February 13, 2020.
Templin Expires February 13, 2020 [Page 1]
Internet-Draft AERO August 2019
Copyright Notice
Copyright (c) 2019 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
(https://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 . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Asymmetric Extended Route Optimization (AERO) . . . . . . . . 10
3.1. AERO Link Reference Model . . . . . . . . . . . . . . . . 10
3.2. AERO Node Types . . . . . . . . . . . . . . . . . . . . . 12
3.3. AERO Routing System . . . . . . . . . . . . . . . . . . . 13
3.3.1. IPv4 Compatibility Routing . . . . . . . . . . . . . 15
3.4. AERO Addresses . . . . . . . . . . . . . . . . . . . . . 15
3.5. Spanning Partitioned AERO Networks (SPAN) . . . . . . . . 17
3.5.1. SPAN Compatibility Addressing . . . . . . . . . . . . 21
3.6. AERO Interface Characteristics . . . . . . . . . . . . . 21
3.7. AERO Interface Initialization . . . . . . . . . . . . . . 25
3.7.1. AERO Server/Gateway Behavior . . . . . . . . . . . . 26
3.7.2. AERO Proxy Behavior . . . . . . . . . . . . . . . . . 26
3.7.3. AERO Client Behavior . . . . . . . . . . . . . . . . 26
3.7.4. AERO Relay Behavior . . . . . . . . . . . . . . . . . 27
3.8. AERO Interface Neighbor Cache Maintenance . . . . . . . . 27
3.9. AERO Interface Encapsulation and Re-encapsulation . . . . 29
3.10. AERO Interface Decapsulation . . . . . . . . . . . . . . 30
3.11. AERO Interface Data Origin Authentication . . . . . . . . 30
3.12. AERO Interface Forwarding Algorithm . . . . . . . . . . . 31
3.12.1. Client Forwarding Algorithm . . . . . . . . . . . . 32
3.12.2. Proxy Forwarding Algorithm . . . . . . . . . . . . . 32
3.12.3. Server/Gateway Forwarding Algorithm . . . . . . . . 33
3.12.4. Relay Forwarding Algorithm . . . . . . . . . . . . . 35
3.13. AERO Interface MTU and Fragmentation . . . . . . . . . . 35
3.13.1. AERO MTU Requirements . . . . . . . . . . . . . . . 38
3.14. AERO Interface Error Handling . . . . . . . . . . . . . . 38
3.15. AERO Router Discovery, Prefix Delegation and
Autoconfiguration . . . . . . . . . . . . . . . . . . . . 41
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