State Machines for the Protocol for Carrying Authentication for Network Access (PANA)
RFC 5609

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Network Working Group                                    V. Fajardo, Ed.
Request for Comments: 5609                        Telcordia Technologies
Category: Informational                                          Y. Ohba
                                                                 Toshiba
                                                          R. Marin-Lopez
                                                         Univ. of Murcia
                                                             August 2009

                           State Machines for
   the Protocol for Carrying Authentication for Network Access (PANA)

Abstract

   This document defines the conceptual state machines for the Protocol
   for Carrying Authentication for Network Access (PANA).  The state
   machines consist of the PANA Client (PaC) state machine and the PANA
   Authentication Agent (PAA) state machine.  The two state machines
   show how PANA can interface with the Extensible Authentication
   Protocol (EAP) state machines.  The state machines and associated
   models are informative only.  Implementations may achieve the same
   results using different methods.

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) 2009 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 in effect on the date of
   publication of this document (http://trustee.ietf.org/license-info).
   Please review these documents carefully, as they describe your rights
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Fajardo, et al.              Informational                      [Page 1]
RFC 5609                  PANA State Machines                August 2009

Table of Contents

   1. Introduction ....................................................3
   2. Terminology .....................................................3
   3. Interface between PANA and EAP ..................................3
   4. Document Authority ..............................................5
   5. Notations .......................................................5
   6. Common Rules ....................................................6
      6.1. Common Procedures ..........................................6
      6.2. Common Variables ...........................................9
      6.3. Configurable Values .......................................10
      6.4. Common Message Initialization Rules .......................10
      6.5. Common Retransmission Rules ...............................10
      6.6. Common State Transitions ..................................11
   7. PaC State Machine ..............................................12
      7.1. Interface between PaC and EAP Peer ........................12
           7.1.1. Delivering EAP Messages from PaC to EAP Peer .......12
           7.1.2. Delivering EAP Messages from EAP Peer to PaC .......12
           7.1.3. EAP Restart Notification from PaC to EAP Peer ......13
           7.1.4. EAP Authentication Result Notification from
                  EAP Peer to PaC ....................................13
           7.1.5. Alternate Failure Notification from PaC to
                  EAP Peer ...........................................13
      7.2. Configurable Values .......................................13
      7.3. Variables .................................................14
      7.4. Procedures ................................................15
      7.5. PaC State Transition Table ................................15
   8. PAA State Machine ..............................................21
      8.1. Interface between PAA and EAP Authenticator ...............21
           8.1.1. EAP Restart Notification from PAA to EAP
                  Authenticator ......................................21
           8.1.2. Delivering EAP Responses from PAA to EAP
                  Authenticator ......................................22
           8.1.3. Delivering EAP Messages from EAP
                  Authenticator to PAA ...............................22
           8.1.4. EAP Authentication Result Notification from
                  EAP Authenticator to PAA ...........................22
      8.2. Variables .................................................23
      8.3. Procedures ................................................24
      8.4. PAA State Transition Table ................................24
   9. Implementation Considerations ..................................29
      9.1. PAA and PaC Interface to Service Management Entity ........29
   10. Security Considerations .......................................29
   11. Acknowledgments ...............................................29
   12. References ....................................................29