Problem Statements of FlexE Interface Management
draft-jiang-ccamp-flexe-ifmps-00

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Network Working Group                                 Y. Jiang
Internet Draft                                         F. Yang
Intended status: Informational                         I. Busi
                                                        Huawei
                                                       J. Wang
                                                     Fiberhome
Expires: May 2020                         November 4, 2019

            Problem Statements of FlexE Interface Management
                   draft-jiang-ccamp-flexe-ifmps-00

Abstract

   This document outlines the problem statements for FlexE interface
   management; it also gives an analysis of configuration requirements
   for Flex Ethernet (FlexE) interface management. Requirements on FlexE
   interface management are summarized in the end.

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   This Internet-Draft will expire on April 4, 2020.

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   Copyright (c) 2019 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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   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.    Introduction ........................................ 2
      1.1.  Conventions used in this document ................ 3
      1.2.  Terminology ...................................... 4
   2.    Problem statements .................................. 4
      2.1.  Overview of FlexE management ..................... 4
      2.2.  Considerations on parameters in FlexE Overhead ... 5
      2.2.1. Static or configurable .......................... 6
      2.2.2. Negotiation enable or not ....................... 7
      2.2.3. Management of FlexE clients ..................... 7
      2.3.  Considerations on bidirectional transport ........ 8
   3.    Requirements ........................................ 9
   4.    Security Considerations ............................ 10
   5.    IANA Considerations ................................ 10
   6.    References ......................................... 10
      6.1.  Normative References ............................ 10
      6.2.  Informative References .......................... 10
   7.    Acknowledgments .................................... 10

1. Introduction

   The Flex Ethernet (FlexE) 2.0 Implementation Agreement
   [FLEXE] defined by the OIF provides the support of a
   variety of Ethernet MAC rates that may or may not
   correspond to any existing Ethernet PHY rate. This
   includes MAC rates that are both greater than (through
   bonding) and less than (through sub-rate and
   channelization) the Ethernet PHY rates used to carry
   FlexE.

   Besides 100GBASE-R PHYs as supported in FlexE 1.0, FlexE
   2.0 supports the bonding of 200GBASE-R PHYs or 400GBASE-R
   PHYs respectively. FlexE 2.1 further supports the bonding
   of 50GBASE-R PHYs.

   According to [FLEXE], FlexE supports the following
   features:

   - Bonding of multiple ETH PHYs (1~254)

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   - Sub-rates of ETH PHY (minimum of 5G to maximum capacity
   of bandwidth in a PHY)

   - Channelization within a PHY or a group of bonded PHYs
   (5G ~ k*5G, combination of multiple slots, where each
   slot can be allocated from any PHY)

   In the FlexE, multiple Ethernet PHYs (each PHY can
   further consist of one or more FlexE Instances) are
   bonded into a FlexE Group, and the total capacity of the
   FlexE Group is represented as a collection of slots (e.g.,
   each slot has a granularity of 5Gbps or 25Gbps).  Based