Analysis of IPv6 Link Models for 802.16 Based Networks
RFC 4968
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RFC - Informational
(August 2007; Errata)
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Last updated |
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2015-10-14
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IETF
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(None)
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IESG state |
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RFC 4968 (Informational)
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Jari Arkko
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Network Working Group S. Madanapalli, Ed.
Request for Comments: 4968 Ordyn Technologies
Category: Informational August 2007
Analysis of IPv6 Link Models for IEEE 802.16 Based Networks
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
This document provides different IPv6 link models that are suitable
for IEEE 802.16 based networks and provides analysis of various
considerations for each link model and the applicability of each link
model under different deployment scenarios. This document is the
result of a design team (DT) that was formed to analyze the IPv6 link
models for IEEE 802.16 based networks.
Madanapalli Informational [Page 1]
RFC 4968 IPv6 Link Models for IEEE 802.16 August 2007
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. IPv6 Link Models for IEEE 802.16 Based Networks . . . . . . . 3
3.1. Shared IPv6 Prefix Link Model . . . . . . . . . . . . . . 3
3.1.1. Prefix Assignment . . . . . . . . . . . . . . . . . . 5
3.1.2. Address Autoconfiguration . . . . . . . . . . . . . . 5
3.1.3. Duplicate Address Detection . . . . . . . . . . . . . 5
3.1.4. Considerations . . . . . . . . . . . . . . . . . . . . 6
3.1.5. Applicability . . . . . . . . . . . . . . . . . . . . 7
3.2. Point-to-Point Link Model . . . . . . . . . . . . . . . . 7
3.2.1. Prefix Assignment . . . . . . . . . . . . . . . . . . 8
3.2.2. Address Autoconfiguration . . . . . . . . . . . . . . 8
3.2.3. Considerations . . . . . . . . . . . . . . . . . . . . 8
3.2.4. Applicability . . . . . . . . . . . . . . . . . . . . 9
3.3. Ethernet-Like Link Model . . . . . . . . . . . . . . . . . 10
3.3.1. Prefix Assignment . . . . . . . . . . . . . . . . . . 10
3.3.2. Address Autoconfiguration . . . . . . . . . . . . . . 10
3.3.3. Duplicate Address Detection . . . . . . . . . . . . . 10
3.3.4. Considerations . . . . . . . . . . . . . . . . . . . . 11
3.3.5. Applicability . . . . . . . . . . . . . . . . . . . . 11
4. Renumbering . . . . . . . . . . . . . . . . . . . . . . . . . 11
5. Effect on Dormant Mode . . . . . . . . . . . . . . . . . . . . 12
6. Effect on Routing . . . . . . . . . . . . . . . . . . . . . . 12
7. Conclusions and Relevant Link Models . . . . . . . . . . . . . 13
8. Security Considerations . . . . . . . . . . . . . . . . . . . 13
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
10. Contributors . . . . . . . . . . . . . . . . . . . . . . . . . 14
11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11.1. Normative References . . . . . . . . . . . . . . . . . . . 14
11.2. Informative References . . . . . . . . . . . . . . . . . . 14
1. Introduction
IEEE 802.16 [4] [5] is a point-to-multipoint, connection-oriented
access technology for the last mile without bi-directional native
multicast support. IEEE 802.16 has defined only downlink multicast
support. This leads to two methods for running IP protocols that
traditionally assume the availability of multicast at the link layer.
One method is to use bridging, e.g., IEEE 802.1D [6], to support bi-
directional multicast. Another method is to treat the IEEE 802.16
MAC (Message Authentication Code) transport connections between an MS
(Mobile Station) and BS (Base Station) as point-to-point IP links so
that the IP protocols (e.g., ARP (Address Resolution Protocol), IPv6
Neighbor Discovery) can be run without any problems.
Madanapalli Informational [Page 2]
RFC 4968 IPv6 Link Models for IEEE 802.16 August 2007
This is further complicated by the definition of commercial network
models like WiMAX, which defines the WiMAX transport connection that
extends the IEEE 802.16 MAC transport connection all the way to an
access router by using a tunnel between the base station and the
access router [14]. This leads to multiple ways of deploying IP over
IEEE 802.16 based networks.
This document looks at various considerations in selecting a link
model for IEEE 802.16 based networks and provides an analysis of the
various possible link models. And finally, this document provides a
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