DetNet MPLS Data Plane Encapsulation
draft-ietf-detnet-dp-sol-mpls-02

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Last updated 2019-03-10
Replaces draft-ietf-detnet-dp-sol
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DetNet                                                  J. Korhonen, Ed.
Internet-Draft
Intended status: Standards Track                           B. Varga, Ed.
Expires: September 11, 2019                                     Ericsson
                                                          March 10, 2019

                  DetNet MPLS Data Plane Encapsulation
                    draft-ietf-detnet-dp-sol-mpls-02

Abstract

   This document specifies the Deterministic Networking data plane when
   operating over an MPLS Packet Switched Networks.

Status of This Memo

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

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   This Internet-Draft will expire on September 11, 2019.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Korhonen & Varga       Expires September 11, 2019               [Page 1]
Internet-Draft           DetNet MPLS Data Plane               March 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Terms Used in This Document . . . . . . . . . . . . . . .   4
     2.2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Requirements Language . . . . . . . . . . . . . . . . . . . .   5
   4.  DetNet MPLS Data Plane Overview . . . . . . . . . . . . . . .   6
     4.1.  Layers of DetNet Data Plane . . . . . . . . . . . . . . .   6
     4.2.  DetNet MPLS Data Plane Scenarios  . . . . . . . . . . . .   7
       4.2.1.  IP Over DetNet MPLS Data Plane Scenarios  . . . . . .   9
       4.2.2.  IEEE 802.1 TSN Over DetNet MPLS Data Plane Scenario .  12
     4.3.  Packet Flow Example with Service Protection . . . . . . .  14
   5.  DetNet MPLS Data Plane Considerations . . . . . . . . . . . .  15
     5.1.  End-System Specific Considerations  . . . . . . . . . . .  16
     5.2.  Sub-Network Considerations  . . . . . . . . . . . . . . .  17
   6.  MPLS-Based DetNet Data Plane Solution . . . . . . . . . . . .  18
     6.1.  DetNet Over MPLS Encapsulation Components . . . . . . . .  18
     6.2.  MPLS Data Plane Encapsulation . . . . . . . . . . . . . .  19
       6.2.1.  DetNet Control Word and the DetNet Sequence Number  .  20
       6.2.2.  S-Labels  . . . . . . . . . . . . . . . . . . . . . .  21
       6.2.3.  F-Labels  . . . . . . . . . . . . . . . . . . . . . .  24
     6.3.  OAM Indication  . . . . . . . . . . . . . . . . . . . . .  26
     6.4.  Flow Aggregation  . . . . . . . . . . . . . . . . . . . .  27
       6.4.1.  Aggregation at the LSP  . . . . . . . . . . . . . . .  28
       6.4.2.  Aggregating DetNet Flows as a new DetNet flow . . . .  28
       6.4.3.  Simple Aggregation at the DetNet Layer  . . . . . . .  29
     6.5.  Service Sub-Layer Considerations  . . . . . . . . . . . .  29
       6.5.1.  Edge Node Processing  . . . . . . . . . . . . . . . .  30
       6.5.2.  Relay Node Processing . . . . . . . . . . . . . . . .  31
     6.6.  Forwarding Sub-Layer Considerations . . . . . . . . . . .  31
       6.6.1.  Class of Service  . . . . . . . . . . . . . . . . . .  31
       6.6.2.  Quality of Service  . . . . . . . . . . . . . . . . .  32
       6.6.3.  Cross-DetNet Flow Resource Aggregation  . . . . . . .  32
       6.6.4.  Layer 2 Addressing and QoS Considerations . . . . . .  33
       6.6.5.  Time Synchronization  . . . . . . . . . . . . . . . .  34
   7.  Controller Plane (Management and Control)
       Considerations  . . . . . . . . . . . . . . . . . . . . . . .  34
     7.1.  S-Label and F-Label Assignment and Distribution . . . . .  35
     7.2.  Packet Replication, Elimination, and Ordering (PREOF) . .  36
     7.3.  Contention Loss and Jitter Reduction  . . . . . . . . . .  36
     7.4.  Bidirectional Traffic . . . . . . . . . . . . . . . . . .  37
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