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Requirements for the Conversion between Permanent Connections and Switched Connections in a Generalized Multiprotocol Label Switching (GMPLS) Network
RFC 5493

Network Working Group                                        D. Caviglia
Request for Comments: 5493                                   D. Bramanti
Category: Informational                                         Ericsson
                                                                   D. Li
                                           Huawei Technologies Co., Ltd.
                                                              D. McDysan
                                                                 Verizon
                                                              April 2009

                Requirements for the Conversion between
          Permanent Connections and Switched Connections in a
       Generalized Multiprotocol Label Switching (GMPLS) Network

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.

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Caviglia, et al.             Informational                      [Page 1]
RFC 5493         Conversion between PC and SC in GMPLS        April 2009

Abstract

   From a carrier perspective, the possibility of turning a permanent
   connection (PC) into a soft permanent connection (SPC) and vice
   versa, without actually affecting data plane traffic being carried
   over it, is a valuable option.  In other terms, such operation can be
   seen as a way of transferring the ownership and control of an
   existing and in-use data plane connection between the management
   plane and the control plane, leaving its data plane state untouched.

   This memo sets out the requirements for such procedures within a
   Generalized Multiprotocol Label Switching (GMPLS) network.

Table of Contents

   1. Introduction ....................................................3
      1.1. Conventions Used in This Document ..........................3
   2. Label Switched Path Terminology .................................3
   3. LSP within GMPLS Control Plane ..................................4
      3.1. Resource Ownership .........................................4
      3.2. Setting Up a GMPLS-Controlled Network ......................5
   4. Typical Use Cases ...............................................6
      4.1. PC-to-SC/SPC Conversion ....................................6
      4.2. SC-to-PC Conversion ........................................6
   5. Requirements ....................................................7
      5.1. Data Plane LSP Consistency .................................7
      5.2. No Disruption of User Traffic ..............................7
      5.3. Transfer from Management Plane to Control Plane ............7
      5.4. Transfer from Control Plane to Management Plane ............7
      5.5. Synchronization of State among Nodes during Conversion .....7
      5.6. Support of Soft Permanent Connections ......................8
      5.7. Failure of Transfer ........................................8
   6. Security Considerations .........................................8
   7. Contributors ....................................................9
   8. Acknowledgments .................................................9
   9. References ......................................................9
      9.1. Normative References .......................................9
      9.2. Informational References ..................................10

Caviglia, et al.             Informational                      [Page 2]
RFC 5493         Conversion between PC and SC in GMPLS        April 2009

1.  Introduction

[include full document text]