Interworking of GMPLS Control and Centralized Controller System
draft-ietf-teas-gmpls-controller-inter-work-00

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Last updated 2019-06-12
Replaces draft-zheng-teas-gmpls-controller-inter-work
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TEAS Working Group                                        Haomian Zheng 
Internet Draft                                             Xianlong Luo 
Category: Informational                             Huawei Technologies  
                                                             Yang Zhao 
                                                          China Mobile 
                                                             Yunbin Xu 
                                                                 CAICT 
                                                        Sergio Belotti 
                                                         Dieter Beller 
                                                                 Nokia 
Expires: December 12, 2019                               June 12, 2019 
                                    
                                    
     Interworking of GMPLS Control and Centralized Controller System 
                                    
                                    
              draft-ietf-teas-gmpls-controller-inter-work-00 

Abstract 
 
   Generalized Multi-Protocol Label Switching (GMPLS) control allows 
   each network element (NE) to perform local resource discovery, 
   routing and signaling in a distributed manner.  

   On the other hand, with the development of software-defined 
   transport networking technology, a set of NEs can be controlled via 
   centralized controller hierarchies to address the issue from multi-
   domain, multi-vendor and multi-technology. An example of such 
   centralized architecture is ACTN controller hierarchy described in 
   RFC 8453.   

   Instead of competing with each other, both the distributed and the 
   centralized control plane have their own advantages, and should be 
   complementary in the system. This document describes how the GMPLS 
   distributed control plane can interwork with a centralized 
   controller system in a transport network. 

Status of this Memo 

   This Internet-Draft is submitted to IETF in full conformance with   
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Zheng, et al.            Expires August 2019                   [Page 1] 



Internet-Draft        GMPLS and Controller Interwork        June 2019 

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Conventions used in this document 

    

Table of Contents 

   1. Introduction ................................................ 3 
   2. Overview .................................................... 4 
   2.1. Overview of GMPLS Control Plane............................ 4 
   2.2. Overview of Centralized Controller System ................. 4 
   2.3. GMPLS Control Interwork with Centralized Controller System. 4 
   3. Link Management Protocol .................................... 6 
   4. Routing Options ............................................. 6 
      4.1. OSPF-TE ................................................ 6 
      4.2. ISIS-TE ................................................ 6 
      4.3. Netconf/RESTconf ....................................... 7 
   5. Path Computation ............................................ 7 
      5.1. Constraint-based Path Computing in GMPLS Control........ 7 
      5.2. Path Computation Element (PCE) ......................... 7 
   6. Signaling Options ........................................... 8 
      6.1. RSVP-TE ................................................ 8 
   7. Interworking Scenarios....................................... 8 
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