Operational Guidance for IPv6 Deployment in IPv4 Sites Using the Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
RFC 6964
| Document | Type |
RFC - Informational
(May 2013; No errata)
Was draft-templin-v6ops-isops (individual)
|
|
|---|---|---|---|
| Last updated | 2013-05-31 | ||
| Stream | ISE | ||
| Formats | plain text pdf html bibtex | ||
| IETF conflict review | conflict-review-templin-v6ops-isops | ||
| Stream | ISE state | Published RFC | |
| Consensus Boilerplate | Unknown | ||
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6964 (Informational) | |
| Telechat date | |||
| Responsible AD | (None) | ||
| Send notices to | (None) | ||
Independent Submission F. Templin
Request for Comments: 6964 Boeing Research & Technology
Category: Informational May 2013
ISSN: 2070-1721
Operational Guidance for IPv6 Deployment in IPv4 Sites Using the
Intra-Site Automatic Tunnel Addressing Protocol (ISATAP)
Abstract
Many end-user sites in the Internet today still have predominantly
IPv4 internal infrastructures. These sites range in size from small
home/office networks to large corporate enterprise networks, but
share the commonality that IPv4 provides satisfactory internal
routing and addressing services for most applications. As more and
more IPv6-only services are deployed, however, end-user devices
within such sites will increasingly require at least basic IPv6
functionality. This document therefore provides operational guidance
for deployment of IPv6 within predominantly IPv4 sites using the
Intra-Site Automatic Tunnel Addressing Protocol (ISATAP).
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This is a contribution to the RFC Series, independently of any other
RFC stream. The RFC Editor has chosen to publish this document at
its discretion and makes no statement about its value for
implementation or deployment. Documents approved for publication by
the RFC Editor are not a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6964.
Templin Informational [Page 1]
RFC 6964 ISATAP Operational Guidance May 2013
Copyright Notice
Copyright (c) 2013 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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Enabling IPv6 Services Using ISATAP . . . . . . . . . . . . . 4
3. SLAAC Services . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Advertising ISATAP Router Behavior . . . . . . . . . . . 5
3.2. ISATAP Host Behavior . . . . . . . . . . . . . . . . . . 6
3.3. Reference Operational Scenario - Shared Prefix Model . . 6
3.4. Reference Operational Scenario - Individual Prefix Model 9
3.5. SLAAC Site Administration Guidance . . . . . . . . . . . 12
3.6. Loop Avoidance . . . . . . . . . . . . . . . . . . . . . 14
3.7. Considerations for Compatibility of Interface Identifiers 14
4. Manual Configuration . . . . . . . . . . . . . . . . . . . . 15
5. Scaling Considerations . . . . . . . . . . . . . . . . . . . 15
6. Site Renumbering Considerations . . . . . . . . . . . . . . . 16
7. Path MTU Considerations . . . . . . . . . . . . . . . . . . . 16
8. Alternative Approaches . . . . . . . . . . . . . . . . . . . 17
9. Security Considerations . . . . . . . . . . . . . . . . . . . 17
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.1. Normative References . . . . . . . . . . . . . . . . . . 18
11.2. Informative References . . . . . . . . . . . . . . . . . 18
Templin Informational [Page 2]
RFC 6964 ISATAP Operational Guidance May 2013
1. Introduction
End-user sites in the Internet today internally use IPv4 routing and
addressing for core operating functions, such as web browsing, file
sharing, network printing, email, teleconferencing, and numerous
other site-internal networking services. Such sites typically have
an abundance of public and/or private IPv4 addresses for internal
networking and are separated from the public Internet by firewalls,
packet filtering gateways, proxies, address translators, and other
site-border demarcation devices. To date, such sites have had little
incentive to enable IPv6 services internally [RFC1687].
End-user sites that currently use IPv4 services internally come in
endless sizes and varieties. For example, a home network behind a
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