GMPLS Routing and Signaling Framework for Flexible Ethernet (FlexE)
draft-izh-ccamp-flexe-fwk-02

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Last updated 2017-03-13
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Common Control and Measurment Plane                      I. Hussain, Ed.
Internet-Draft                                               R. Valiveti
Intended status: Informational                             Infinera Corp
Expires: September 14, 2017                                 Q. Wang, Ed.
                                                                     ZTE
                                                       L. Andersson, Ed.
                                                                 M. Chen
                                                                H. Zheng
                                                                  Huawei
                                                          March 13, 2017

  GMPLS Routing and Signaling Framework for Flexible Ethernet (FlexE)
                      draft-izh-ccamp-flexe-fwk-02

Abstract

   This document specifies GMPLS Control Plane Signalling and Routing
   protocol extensions for Flexible Ethernet (FlexE).  The FlexE data
   plane were specified by Optical Internetworking Forum (OIF) in two
   implementation agreements in 2016.

   As different from earlier Ethernet data planes FlexE allows for
   decoupling of the Ethernet Physical layer (PHY) and Media Access
   Control layer (MAC) rates.

   This document also specifies the use cases of FlexE technology, GMPLS
   control plane requirements, framework and architecture.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on September 14, 2017.

Hussain, et al.        Expires September 14, 2017               [Page 1]
Internet-Draft              FlexE Extensions                  March 2017

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Usecases  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  FlexE Unware transport  . . . . . . . . . . . . . . . . .   6
     3.2.  FlexE Aware transport . . . . . . . . . . . . . . . . . .   8
     3.3.  FlexE Termination in Transport  . . . . . . . . . . . . .  12
       3.3.1.  FlexE Client at Both endpoints  . . . . . . . . . . .  12
       3.3.2.  Interworking of FlexE Client w/ Native Client at the
               other endpoint  . . . . . . . . . . . . . . . . . . .  14
       3.3.3.  Interworking of FlexE client w/ Client from OIF_MLG .  15
     3.4.  Back-to-Back FlexE  . . . . . . . . . . . . . . . . . . .  16
     3.5.  FlexE Client BW Resizing  . . . . . . . . . . . . . . . .  17
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .  19
   5.  Framework . . . . . . . . . . . . . . . . . . . . . . . . . .  21
     5.1.  FlexE Layer Model . . . . . . . . . . . . . . . . . . . .  21
       5.1.1.  Layer Model in FlexE Unaware Case . . . . . . . . . .  21
       5.1.2.  Layer Model in FlexE Terminating Case . . . . . . . .  22
       5.1.3.  Layer Model in FlexE Aware Case . . . . . . . . . . .  22
     5.2.  GMPLS Considerations  . . . . . . . . . . . . . . . . . .  23
       5.2.1.  General Considerations  . . . . . . . . . . . . . . .  23
       5.2.2.  Consideration of FlexE LSPs . . . . . . . . . . . . .  23
       5.2.3.  Control-Plane Modelling of FlexE Network Elements . .  24
       5.2.4.  FlexE Layer Resource Allocation Considerations  . . .  24
       5.2.5.  Neighbour Discovery and Link Property Correlation . .  25
       5.2.6.  Routing and Topology Dissemination  . . . . . . . . .  25
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