IPv6 Enterprise Network Analysis - IP Layer 3 Focus
RFC 4852

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• 07

Network Working Group                                           J. Bound
Request for Comments: 4852                                   Y. Pouffary
Category: Informational                                  Hewlett-Packard
                                                              S. Klynsma
                                                                   MITRE
                                                                T. Chown
                                               University of Southampton
                                                                D. Green
                                                     Command Information
                                                              April 2007

          IPv6 Enterprise Network Analysis - IP Layer 3 Focus

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 analyzes the transition to IPv6 in enterprise networks
   focusing on IP Layer 3.  These networks are characterized as having
   multiple internal links and one or more router connections to one or
   more Providers, and as being managed by a network operations entity.
   The analysis focuses on a base set of transition notational networks
   and requirements expanded from a previous document on enterprise
   scenarios.  Discussion is provided on a focused set of transition
   analysis required for the enterprise to transition to IPv6, assuming
   a Dual-IP layer (IPv4 and IPv6) network and node environment within
   the enterprise.  Then, a set of transition mechanisms are recommended
   for each notational network.

Bound, et al.                Informational                      [Page 1]
RFC 4852            IPv6 Enterprise Network Analysis          April 2007

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................5
   3. Enterprise Matrix Analysis for Transition .......................5
   4. Wide-Scale Dual-Stack Deployment Analysis ......................10
      4.1. Staged Dual-Stack Deployment ..............................10
      4.2. Routing Capability Analysis for Dual-IP Deployment ........11
           4.2.1. IPv6 Routing Capability ............................11
           4.2.2. IPv6 Routing Non-Capability ........................11
                  4.2.2.1. Tunnel IPv6 over the IPv4 infrastructure ..12
                  4.2.2.2. Deploy a Parallel IPv6 Infrastructure .....12
      4.3. Remote IPv6 Access to the Enterprise ......................12
      4.4. Other Considerations ......................................13
   5. Sparse Dual-Stack Deployment Analysis ..........................13
      5.1. Internal versus External Tunnel Endpoint ..................13
      5.2. Manual versus Autoconfigured ..............................14
   6. IPv6-Dominant Network Deployment Analysis ......................14
   7. General Issues from Analysis ...................................15
      7.1. Staged Plan for IPv6 Deployment ...........................15
      7.2. Network Infrastructure Requirements .......................15
      7.3. Stage 1: Initial Connectivity Steps .......................15
           7.3.1. Obtaining External Connectivity ....................16
           7.3.2. Obtaining Global IPv6 Address Space ................16
      7.4. Stage 2: Deploying Generic Basic Service Components .......16
           7.4.1. Developing an IPv6 Addressing Plan .................16
           7.4.2. IPv6 DNS ...........................................17
           7.4.3. IPv6 Routing .......................................17
           7.4.4. Configuration of Hosts .............................18
           7.4.5. Security ...........................................18
      7.5. Stage 3: Widespread Dual-Stack Deployment On-Site .........19
   8. Applicable Transition Mechanisms ...............................20
      8.1. Recognizing Incompatible Network Touchpoints ..............20
      8.2. Recognizing Application Incompatibilities .................21
      8.3. Using Multiple Mechanisms to Support IPv6 Transition ......22
   9. Security Considerations ........................................22
   10. References ....................................................22
      10.1. Normative References .....................................22
      10.2. Informative References ...................................24
   11. Acknowledgments ...............................................25
   Appendix A. Crisis Management Network Scenarios ...................26
      A.1. Introduction ..............................................26
      A.2. Scenarios for IPv6 Deployment in Crisis Management
           Networks ..................................................26