Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-05
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Network Working Group F. Templin, Ed.
Internet-Draft Boeing Research & Technology
Obsoletes: rfc5320, rfc5558, rfc5720, February 13, 2019
rfc6179, rfc6706 (if
approved)
Intended status: Standards Track
Expires: August 17, 2019
Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-05.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
route optimization services for improved performance. AERO provides
an IPv6 link-local address format that supports operation of the IPv6
Neighbor Discovery (ND) protocol and links ND to IP forwarding.
Dynamic link selection, mobility management, quality of service (QoS)
signaling and route optimization are naturally supported through
dynamic neighbor cache updates, while IPv6 Prefix Delegation (PD) is
supported by network services such as the Dynamic Host Configuration
Protocol for IPv6 (DHCPv6). AERO is a widely-applicable tunneling
solution especially well-suited to aviation services, 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
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 August 17, 2019.
Templin Expires August 17, 2019 [Page 1]
Internet-Draft AERO February 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 . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Asymmetric Extended Route Optimization (AERO) . . . . . . . . 8
3.1. AERO Link Reference Model . . . . . . . . . . . . . . . . 8
3.2. AERO Node Types . . . . . . . . . . . . . . . . . . . . . 9
3.3. AERO Routing System . . . . . . . . . . . . . . . . . . . 10
3.4. AERO Addresses . . . . . . . . . . . . . . . . . . . . . 12
3.5. AERO Interface Characteristics . . . . . . . . . . . . . 14
3.6. AERO Interface Initialization . . . . . . . . . . . . . . 17
3.6.1. AERO Relay Behavior . . . . . . . . . . . . . . . . . 17
3.6.2. AERO Server Behavior . . . . . . . . . . . . . . . . 17
3.6.3. AERO Client Behavior . . . . . . . . . . . . . . . . 18
3.6.4. AERO Proxy Behavior . . . . . . . . . . . . . . . . . 18
3.7. AERO Interface Neighbor Cache Maintenance . . . . . . . . 19
3.8. AERO Interface Forwarding Algorithm . . . . . . . . . . . 20
3.8.1. Client Forwarding Algorithm . . . . . . . . . . . . . 21
3.8.2. Proxy Forwarding Algorithm . . . . . . . . . . . . . 21
3.8.3. Server Forwarding Algorithm . . . . . . . . . . . . . 22
3.8.4. Relay Forwarding Algorithm . . . . . . . . . . . . . 22
3.8.5. Processing Return Packets . . . . . . . . . . . . . . 23
3.9. AERO Interface Encapsulation and Re-encapsulation . . . . 24
3.10. AERO Interface Decapsulation . . . . . . . . . . . . . . 25
3.11. AERO Interface Data Origin Authentication . . . . . . . . 25
3.12. AERO Interface Packet Size Issues . . . . . . . . . . . . 26
3.13. AERO Interface Error Handling . . . . . . . . . . . . . . 28
3.14. AERO Router Discovery, Prefix Delegation and
Autoconfiguration . . . . . . . . . . . . . . . . . . . . 31
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