Document:
draft-ietf-pce-gmpls-aps-req-05

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Document Type Active Internet-Draft (pce WG)
Authors Diego Caviglia  , Fatai Zhang  , Kenichi Ogaki  , Tomohiro Otani 
Last updated 2012-01-05 (latest revision 2011-06-08)
Replaces draft-otani-pce-gmpls-aps-req
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Network Working Group                                    Tomohiro Otani 
Internet-Draft                                                     KDDI 
Intended status: Informational                            Kenichi Ogaki 
                                                          KDDI R&D Labs 
                                                         Diego Caviglia 
                                                               Ericsson 
                                                            Fatai Zhang 
                                                                 Huawei 
Expires: July 06, 2012                                 January 06, 2012 
                                      

                                    
               Requirements for GMPLS applications of PCE  
                                      
               Document: draft-ietf-pce-gmpls-aps-req-05.txt 

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with   
   the provisions of BCP 78 and BCP 79. 

   Internet-Drafts are working documents of the Internet Engineering   
   Task Force (IETF), its areas, and its working groups.  Note that   
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   The list of Internet-Draft Shadow Directories can be accessed at   
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   This Internet-Draft will expire on July 06, 2012. 

    

Abstract 

   The initial effort of PCE WG is specifically focused on MPLS (Multi-
   protocol label switching). As a next step, this draft describes 
 
 
 
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   functional requirements for GMPLS (Generalized MPLS) application of 
   PCE (Path computation element).  

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 ................................................. 2 
   2. Terminology .................................................. 3 
   3. GMPLS applications of PCE..................................... 3 
      3.1. GMPLS network model...................................... 3 
      3.2. Path computation in GMPLS network ........................4 
      3.3. Unnumbered Interfaces.................................... 6 
      3.4. Asymmetric Bandwidth Path Computation ................... 6 
   4. Requirements for GMPLS application of PCE .................... 6 
      4.1. Requirements of Path Computation Request ................ 6 
      4.2. Requirements of Path Computation Reply .................. 8 
      4.3. GMPLS PCE Management..................................... 9 
   5. Security consideration........................................ 9 
   6. IANA Considerations .......................................... 9 
   7. Acknowledgement .............................................. 9 
   8. References ................................................... 9 
   9. Authors' Addresses ........................................... 12 
    
1. Introduction 

   The initial effort of PCE WG is focused on solving the path 
   computation problem within a domain or over different domains in 
   MPLS networks. As the same case with MPLS, service providers (SPs) 
   have also come up with requirements for path computation in GMPLS 
   networks such as wavelength, TDM-based or Ethernet-based networks as 
   well. 

   [RFC4655] and [RFC4657] discuss the framework and requirements for 
   PCE on both packet MPLS networks and (non-packet switch capable) 
   GMPLS networks. This document complements these documents by 
   providing some considerations of GMPLS applications in the intra-
   domain and inter-domain networking environments and indicating a set 
   of requirements for the extended definition of series of PCE related 
   protocols. 

 
 
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   Note that the requirements for inter-layer traffic engineering 
   described in [PCE-INTER LAYER-REQ] are outside of the scope of this 
   document. 

   Constraint based shortest path first (CSPF) computation within a 
   domain or over domains for signaling GMPLS Label Switched Paths 
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