Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Path Diversity using Exclude Route
draft-ietf-teas-lsp-diversity-08

Document Type Active Internet-Draft (teas WG)
Last updated 2017-08-31 (latest revision 2017-07-02)
Replaces draft-ietf-ccamp-lsp-diversity
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2015 - Submit XRO based LSP... )
Document shepherd Lou Berger
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TEAS Working Group                                    Zafar Ali, Ed. 
   Internet Draft                                   George Swallow, Ed. 
   Intended status: Standard Track                        Cisco Systems 
   Updates RFC4874                                        F. Zhang, Ed. 
   Expires: January 3, 2018                                      Huawei 
                                                         D. Beller, Ed. 
                                                                  Nokia 
                                                           July 2, 2017 
    
      Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) Path 
                       Diversity using Exclude Route 

                    draft-ietf-teas-lsp-diversity-08.txt 

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   Ali, Swallow, Zhang, Beller, et al. Expires January 2018    [Page 1] 

   Internet Draft      draft-ietf-teas-lsp-diversity-08.txt 

   Abstract 

   Resource ReserVation Protocol-Traffic Engineering provides support 
   for the communication of exclusion information during label switched 
   path (LSP) setup. This document specifies two new diversity 
   subobjects for the RSVP XRO and EXRS subobjects. Three different 
   mechanisms are supported how LSP diversity can be accomplished in 
   the provider or core network: the signaled diversity type, indicates 
   whether diversity is based on client, path computation engine (PCE), 
   or network assigned identifiers. 
   The solution described in this document is based on the assumption 
   that LSPs are requested sequentially, i.e., the time period between 
   the LSP setup requests for the two LSPs may be longer (days, weeks, 
   months). Re-routing the first LSP that may have existed for a longer 
   period of time is not considered.  
    
   Conventions used in this document 

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", 
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this 
   document are to be interpreted as described in RFC 2119 [RFC2119]. 

   Table of Contents 

   1. Introduction..................................................3 
      1.1. Client-Initiated Identifier..............................5 
      1.2. PCE-allocated Identifier.................................6 
      1.3. Network-Assigned Identifier..............................7 
   2. RSVP-TE signaling extensions..................................9 
      2.1. Diversity XRO Subobject..................................9 
      2.2. Diversity EXRS Subobject................................15 
      2.3. Processing rules for the Diversity XRO and EXRS 
           subobjects..............................................16 
   3. Security Considerations......................................20 
   4. IANA Considerations..........................................20 
      4.1. New XRO subobject types.................................20 
      4.2. New EXRS subobject types................................21 
      4.3. New RSVP error sub-codes................................21 
   5. Acknowledgements.............................................22 
   6. References...................................................22 
      6.1. Normative References....................................22 
      6.2. Informative References..................................23 
    

    
    
                            Expires January 2018               [Page 2] 
       

   Internet Draft      draft-ietf-teas-lsp-diversity-08.txt 
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