RFC 2894 (rfc2894) - Page 2 of 32

Router Renumbering for IPv6

RFC 2894              Router Renumbering for IPv6            August 2000


Table of Contents

   1.  Functional Overview .......................................    2
   2.  Definitions ...............................................    4
       2.1.  Terminology .........................................    4
       2.2.  Requirements ........................................    5
   3.  Message Format ............................................    5
       3.1.  Router Renumbering Header ...........................    7
       3.2.  Message Body -- Command Message .....................    9
           3.2.1.  Prefix Control Operation ......................    9
               3.2.1.1.  Match-Prefix Part .......................    9
               3.2.1.2.  Use-Prefix Part .........................   11
       3.3.  Message Body -- Result Message ......................   12
   4.  Message Processing ........................................   14
       4.1.  Header Check ........................................   14
       4.2.  Bounds Check ........................................   15
       4.3.  Execution ...........................................   16
       4.4.  Summary of Effects ..................................   17
   5.  Sequence Number Reset .....................................   18
   6.  IANA Considerations .......................................   19
   7.  Security Considerations ...................................   19
       7.1.  Security Policy and Association Database Entries ....   19
   8.  Implementation and Usage Advice for Reliability ...........   20
       8.1.  Outline and Definitions .............................   21
       8.2.  Computations ........................................   23
       8.3.  Additional Assurance Methods ........................   24
   9.  Usage Examples ............................................   25
       9.1.  Maintaining Global-Scope Prefixes ...................   25
       9.2.  Renumbering a Subnet ................................   26
   10.  Acknowledgments ..........................................   27
   11.  References ...............................................   28
   12.  Author's Address .........................................   29
   Appendix -- Derivation of Reliability Estimates ...............   30
   Full Copyright Statement ......................................   32

1.  Functional Overview

   Router Renumbering Command packets contain a sequence of Prefix
   Control Operations (PCOs).  Each PCO specifies an operation, a
   Match-Prefix, and zero or more Use-Prefixes.  A router processes each
   PCO in sequence, checking each of its interfaces for an address or
   prefix which matches the Match-Prefix.  For every interface on which
   a match is found, the operation is applied.  The operation is one of
   ADD, CHANGE, or SET-GLOBAL to instruct the router to respectively add
   the Use-Prefixes to the set of configured prefixes, remove the prefix
   which matched the Match-Prefix and replace it with the Use-Prefixes,





Crawford                    Standards Track