Asymmetric Extended Route Optimization (AERO)
draft-templin-intarea-6706bis-51
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
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
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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 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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