RSVP-TE Extensions in Support of Proactive Protection
draft-lin-teas-gmpls-proactive-protection-00

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TEAS Working Group                                               Yi Lin 
Internet Draft                                      Huawei Technologies 
Intended status: Standards Track                         Bin Yeong Yoon 
                                                                   ETRI 
Expires: September 2020                                   March 9, 2020 
 
 
                                      
           RSVP-TE Extensions in Support of Proactive Protection 
              draft-lin-teas-gmpls-proactive-protection-00.txt 

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   Section 4.e of the Trust Legal Provisions and are provided without 
   warranty as described in the Simplified BSD License. 

Abstract 

   This document describes protocol-specific procedures and extensions 
   for Generalized Multi-Protocol Label Switching (GMPLS) Resource 
   ReSerVation Protocol - Traffic Engineering (RSVP-TE) signaling to 
   support Label Switched Path (LSP) Proactive Protection, which create 
   the protecting LSP after a failure is predicted and before it 
   becomes a real failure. 

Table of Contents 

   1. Introduction .................................................. 2 
   2. Conventions used in this document ............................. 3 
   3. Overview of Predicted Failure and Related Recovery Methods .... 3 
      3.1. Predicted Failure ........................................ 3 
      3.2. Proactive Protection ..................................... 4 
   4. Modified PROTECTION Object Format ............................. 6 
   5. Extension to ERROR_SPEC Object ................................ 7 
      5.1. New Error Code / Sub-code ................................ 7 
      5.2. New TLVs in ERROR_SPEC Object ............................ 7 
   6. End-to-end Proactive Protection ............................... 8 
      6.1. Creation of the Protected LSP ............................ 8 
      6.2. Notification of Predicted Failure Event .................. 9 
      6.3. Tearing Down of the Protecting LSP ....................... 9 
   7. Proactive Segment Protection ................................. 10 
      7.1. Creation of the Protected LSP ........................... 10 
      7.2. Notification of Predicted Failure Event ................. 11 
      7.3. Tearing Down of the Segment Recovery LSP ................ 12 
      7.4. Priority and Resource Pre-emption ....................... 12 
   8. Consideration of Backward Compatibility ...................... 14 
   9. Security Considerations ...................................... 14 
   10. IANA Considerations.......................................... 14 
   11. References .................................................. 14 
      11.1. Normative References ................................... 14 
      11.2. Informative References ................................. 15 
   12. Authors' Addresses .......................................... 15 
    
    

1. Introduction 

   [RFC4872] and [RFC4873] describe protocol-specific procedures and 
   extensions for GMPLS RSVP-TE signaling to support end-to-end LSP 

 
 
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   recovery (including protection and restoration) and segment LSP 
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