Interworking of GMPLS Control and Centralized Controller System
draft-ietf-teas-gmpls-controller-inter-work-02
TEAS Working Group Haomian Zheng
Internet Draft Xianlong Luo
Yi Lin
Category: Informational Huawei Technologies
Yang Zhao
China Mobile
Yunbin Xu
CAICT
Sergio Belotti
Dieter Beller
Nokia
Expires: May 4, 2020 November 4, 2019
Interworking of GMPLS Control and Centralized Controller System
draft-ietf-teas-gmpls-controller-inter-work-02
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.
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Zheng, et al. Expires May 2020 [Page 1]
Internet-Draft GMPLS and Controller Interwork November 2019
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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. Discovery Options ............................................. 6
3.1. LMP ...................................................... 6
4. Routing Options ............................................... 6
4.1. OSPF-TE .................................................. 7
4.2. ISIS-TE .................................................. 7
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) ........................... 8
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