Network Working Group                                            X. Geng
Internet-Draft                                                   M. Chen
Intended status: Standards Track                     Huawei Technologies
Expires: January 14, April 15, 2021                                          Y. Ryoo
                                                                    ETRI
                                                                D. Fedyk
                                                 LabN Consulting, L.L.C.
                                                                   Z. Li
                                                            China Mobile
                                                               R. Rahman
                                                           Cisco Systems
                                                           July 13,
                                                                   Z. Li
                                                            China Mobile
                                                        October 12, 2020

       Deterministic Networking (DetNet) Configuration YANG Model
                       draft-ietf-detnet-yang-07
                       draft-ietf-detnet-yang-08

Abstract

   This document contains the specification for Deterministic Networking
   flow configuration YANG Model.  The model allows for provisioning of
   end-to-end DetNet service along the path without dependency on any
   signaling protocol.

   The YANG module defined in this document conforms to the Network
   Management Datastore Architecture (NMDA).

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   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 January 14, April 15, 2021.

Copyright Notice

   Copyright (c) 2020 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
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminologies . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DetNet Configuration Module . . . . . . . . . . . . . . . . .   3
     3.1.  DetNet Appliction Flow Configuration Attributes . . . . .   3
     3.2.  DetNet Service Sub-layer Configuration Attributes . . . .   3
     3.3.  DetNet Forwarding Sub-layer Configuration Attributes  . .   3
   4.  DetNet Flow Aggregation . . . . . . . . . . . . . . . . . . .   4
   5.  DetNet YANG Structure Considerations  . . . . . . . . . . . .   4
   5.   5
   6.  DetNet Configuration YANG Structures  . . . . . . . . . . . .   4
   6.   5
   7.  DetNet Configuration YANG Model . . . . . . . . . . . . . . .  16
   7.  14
   8.  Open Issues . . . . . . . . . . . . . . . . . . . . . . . . .  37
   8.  41
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  37
   9.  41
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  37
   10.  41
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  37
   11.  41
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  37
     11.1.  41
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  38
     11.2.  41
     12.2.  Informative References . . . . . . . . . . . . . . . . .  39  42
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  41  42

1.  Introduction

   DetNet (Deterministic Networking) provides a capability to carry
   specified unicast or multicast data flows for real-time applications
   with extremely low packet loss rates and assured maximum end-to-end
   delivery latency.  A description of the general background and
   concepts of DetNet can be found in [RFC8655].

   This document defines a YANG model for DetNet based on YANG data
   types and modeling language defined in [RFC6991] and [RFC7950].

   DetNet service, which is designed for describing the characteristics
   of services being provided for application flows over a network, and
   DetNet configuration, which is designed for DetNet flow path
   establishment, flow status reporting, and DetNet functions
   configuration in order to achieve end-to-end bounded latency and zero
   congestion loss, are both included in this document.

2.  Terminologies

   This documents uses the terminologies defined in [RFC8655].

3.  DetNet Configuration Module

   DetNet configuration module includes DetNet App-flow configuration,
   DetNet Service Sub-layer configuration, and DetNet Forwarding Sub-
   layer configuration.  The corresponding attributes used in different
   sub-layers are defined in Section 3.1, 3.2, 3.3 respectively.

3.1.  DetNet Appliction Flow Configuration Attributes

   DetNet application flow is responsible for mapping between
   application flows and DetNet flows at the edge node(egress/ingress
   node).  Where the application flows can be either layer 2 or layer 3
   flows.  To map a flow at the User Network Interface (UNI), the
   corresponding attributes are defined in
   [I-D.ietf-detnet-flow-information-model].

3.2.  DetNet Service Sub-layer Configuration Attributes

   DetNet service functions, e.g., DetNet tunnel initialization/
   termination and service protection, are provided in DetNet service
   sub-layer.  To support these functions, the following service
   attributes need to be configured:

   o  DetNet flow identification

   o  Service function indication, indicates which service function will
      be invoked at a DetNet edge, relay node or end station.  (DetNet
      tunnel initialization or termination are default functions in
      DetNet service layer, so there is no need for explicit
      indication).  The corresponding arguments for service functions
      also needs to be defined.

3.3.  DetNet Forwarding Sub-layer Configuration Attributes

   As defined in [RFC8655], DetNet forwarding sub-layer optionally
   provides congestion protection for DetNet flows over paths provided
   by the underlying network.  Explicit route is another mechanism that
   is used by DetNet to avoid temporary interruptions caused by the
   convergence of routing or bridging protocols, and it is also
   implemented at the DetNet forwarding sub-layer.

   To support congestion protection and explicit route, the following
   transport layer related attributes are necessary:

   o  Traffic Specification, refers to Section 7.2 of
      [I-D.ietf-detnet-flow-information-model].  It may used for
      resource reservation, flow shaping, filtering and policing.

   o  Explicit path, existing explicit route mechanisms can be reused.
      For example, if Segment Routing (SR) tunnel is used as the
      transport tunnel, the configuration is mainly at the ingress node
      of the transport layer; if the static MPLS tunnel is used as the
      transport tunnel, the configurations need to be at every transit
      node along the path; for pure IP based transport tunnel, it's
      similar to the static MPLS case.

4.  DetNet YANG Structure Considerations

   The picture shows Flow Aggregation

   DetNet provides the capability of flow aggregation to improve
   scaleability of DetNet data, management and control planes.
   Aggregated flows can be viewed by the some DetNet nodes as individual
   DetNet flows.  When aggregating DetNet flows, the flows should be
   compatible: if bandwidth reservations are used, the reservation
   should be a reasonable representation of the individual reservations;
   if maximum delay bounds are used, the system should ensure that the general structure
   aggregate does not exceed the delay bounds of the individual flows.

   The DetNet YANG
   Model:

                     +-----------+
                     |ietf-detnet|
                     +-----+-----+
                           |
             +-------------+---------------+
             |             |               |
       +-----+-----+ +-----+-----+ +-------+------+
       | App Flows | |service s-l| |forwarding s-l|
       +-----------+ +-----------+ +--------------+

   There are three instances model defined in this document supports DetNet YANG Model: App-flow instance, flow
   aggregation with the following functions:

   o  Aggregation flow encapsulation/decapsulation/identification

   o  Mapping individual DetNet flows to an aggregated flow

   o  Changing traffic specification parameters for aggregated flow

   The following cases of DetNet aggregation are supported:

   o  aggregate data flows into an application which is then mapped to a
      service sub-layer instance and forwarding sub-layer instance,
   respectively corresponding at the ingress node.  Note the data flows may be
      other DetNet flows.

   o  map each DetNet application to four parts a single service sub-layer and
      allowing the aggregation of multiple applications at the ingress
      node, and vice versa for de-aggregation.  A classifier may be
      required to de-aggregate the respective applications.

   o  map each DetNet functions defined
   in section 3.

5.  DetNet Configuration YANG Structures

module: ietf-detnet-config
module: ietf-detnet-config
  +--rw detnet
     +--rw app-flows
     |  +--rw app-flow* [name]
     |     +--rw name                      string application uniquely to a single service sub-layer
      where those sub-layers may be encapsulated as a single service
      sub-layer and hence aggregating the applications at the ingress
      node, and vice versa for de-aggregation.  In this case, the
      service sub-layer identifier may be sufficient to identify the
      application.  A classifier may be required to de-aggregate the
      service sub-layers.

   o  aggregate DetNet service sub-layers into an aggregated flow by
      using the same forwarding sub-layer at ingress node or relay node,
      and vice versa for de-aggregation.

   o  aggregate DetNet flows with different forwarding sub-layer into an
      aggregated flow by using the same forwarding sub-layer at transit
      node, and vice versa for de-aggregation.

   Traffic requirements and traffic specification may be tracked for
   individual or aggregate flows but reserving resources and tracking
   the services in the aggregated flow is out of scope.

5.  DetNet YANG Structure Considerations

   The picture shows that the general structure of the DetNet YANG
   Model:

                     +-----------+
                     |ietf-detnet|
                     +-----+-----+
                           |     +--ro app-id?                   uint16
             +-------------+---------------+
             |     +--rw app-flow-bidir-congruent? boolean             |               |
       +-----+-----+ +-----+-----+ +-------+------+
       | App Flows | |service s-l| |forwarding s-l|
       +-----------+ +-----------+ +--------------+

   There are three instances in DetNet YANG Model: App-flow instance,
   service sub-layer instance and forwarding sub-layer instance,
   respectively corresponding to four parts of DetNet functions defined
   in section 3.

6.  DetNet Configuration YANG Structures

module: ietf-detnet-config
  +--rw outgoing-service?         service-sub-layer-ref detnet
     +--rw traffic-profile* [profile-number]
     |  +--rw incoming-service?         service-sub-layer-ref profile-number                 uint16
     |  +--rw traffic-requirements
     |  |  +--rw min-bandwidth?                    uint64
     |  |  +--rw max-latency?                      uint32
     |  |  +--rw max-latency-variation?            uint32
     |  |  +--rw max-loss?                         uint8
     |  |  +--rw max-consecutive-loss-tolerance?   uint32
     |  |  +--rw max-misordering?                  uint32
     |  +--rw traffic-specification
     |  |  +--rw interval?                       uint32
     |  |  +--rw max-packets-per-interval?       uint32
     |  |  +--rw max-payload-size?               uint32
     |  |  +--rw average-packets-per-interval?   uint32
     |  |  +--rw average-payload-size?           uint32
     |  +--ro member-applications*           app-flow-ref
     |  +--ro member-services*               service-sub-layer-ref
     |  +--ro member-groups*                 aggregation-grp-ref
     |  +--ro member-forwarding-sublayers*   forwarding-sub-layer-ref
     +--rw app-flows
     |  +--rw app-flow* [name]
     |     +--rw name                        string
     |     +--rw app-flow-bidir-congruent?   boolean
     |     +--ro outgoing-service?           service-sub-layer-ref
     |     +--ro incoming-service?           service-sub-layer-ref
     |     +--rw traffic-profile?            traffic-profile-ref
     |     +--rw ingress
     |     |  +--rw name?               string
     |     |  +--ro app-flow-status?    identityref
     |     |  +--rw interface?          if:interface-ref
     |     |  +--rw (data-flow-type)?
     |     |     +--:(tsn-app-flow)
     |     |     |  +--rw source-mac-address?        yang:mac-address
     |     |     |  +--rw destination-mac-address?   yang:mac-address
     |     |     |  +--rw ethertype?                 eth:ethertype
     |     |     |  +--rw vlan-id?                   uint16
     |     |     |  +--rw pcp?                       uint8
     |     |     +--:(ip-app-flow)
     |     |     |  +--rw src-ip-prefix?      inet:ip-prefix
     |     |     |  +--rw dest-ip-prefix?     inet:ip-prefix
     |     |     |  +--rw next-header?        uint8
     |     |     |  +--rw traffic-class?      uint8
     |     |     |  +--rw flow-label?         inet:ipv6-flow-label
     |     |     |  +--rw source-port
     |     |     |  |  +--rw (port-range-or-operator)?
     |     |     |  |     +--:(range)
     |     |     |  |     |  +--rw lower-port    inet:port-number
     |     |     |  |     |  +--rw upper-port    inet:port-number
     |     |     |  |     +--:(operator)
     |     |     |  |        +--rw operator?   operator   packet-fields:operator
     |     |     |  |        +--rw port        inet:port-number
     |     |     |  +--rw destination-port
     |     |     |  |  +--rw (port-range-or-operator)?
     |     |     |  |     +--:(range)
     |     |     |  |     |  +--rw lower-port    inet:port-number
     |     |     |  |     |  +--rw upper-port    inet:port-number
     |     |     |  |     +--:(operator)
     |     |     |  |        +--rw operator?   operator   packet-fields:operator
     |     |     |  |        +--rw port        inet:port-number
     |     |     |  +--rw ipsec-spi?          ipsec-spi
     |     |     +--:(mpls-app-flow)
     |     |        +--rw (label-space)?
     |     |           +--:(context-label-space)
     |     |           |  +--rw mpls-label-stack
     |     |           |     +--rw entry* [id]
     |     |           |        +--rw id               uint8
     |     |           |        +--rw label?
     |     |           |        |       rt-types:mpls-label
     |     |           |        +--rw ttl?             uint8
     |     |           |        +--rw traffic-class?   uint8
     |     |           +--:(platform-label-space)
     |     |              +--rw label?   rt-types:mpls-label
     |     +--rw egress
     |        +--rw name?                 string
     |        +--rw (application-type)?
     |           +--:(ethernet)
     |           |  +--rw ethernet
     |           |     +--rw ethernet-place-holder?   string
     |           +--:(ip-mpls)
     |              +--rw ip-mpls
     |                 +--rw (next-hop-options)
     |                    +--:(simple-next-hop)
     |                    |  +--rw outgoing-interface?
     |                    |  |       if:interface-ref
     |                    |  +--rw (flow-type)?
     |                    |     +--:(ip)
     |                    |     |  +--rw next-hop-address?
     |                    |     |          inet:ip-address
     |                    |     +--:(mpls)
     |                    |        +--rw mpls-label-stack
     |                    |           +--rw entry* [id]
     |                    |              +--rw id               uint8
     |                    |              +--rw label?
     |                    |              |       rt-types:mpls-label
     |                    |              +--rw ttl?             uint8
     |                    |              +--rw traffic-class?   uint8
     |                    +--:(next-hop-list)
     |                       +--rw next-hop-list
     |                          +--rw next-hop* [hop-index]
     |                             +--rw hop-index             uint8
     |                             +--rw outgoing-interface?
     |                             |       if:interface-ref
     |                             +--rw (flow-type)?
     |                                +--:(ip)
     |                                |  +--rw next-hop-address?
     |                                |          inet:ip-address
     |                                +--:(mpls)
     |                                   +--rw mpls-label-stack
     |                                      +--rw entry* [id]
     |                                         +--rw id
     |                                         |       uint8
     |                                         +--rw label?         rt-types:mpls-label
     |                                         |       rt-types:
     |                                         |       mpls-label
     |                                         +--rw ttl?
     |                                         |       uint8
     |                                         +--rw traffic-class?
     |                                                 uint8
     +--rw service-sub-layer service-aggregation-group* [group-name]
     |  +--rw service-sub-layer-list* [name] group-name    aggregation-group
     |  +--rw name                    string outgoing
     |     +--ro service-id?             uint16  |  +--rw service-rank?           uint8 traffic-profile?      traffic-profile-ref
     |  |  +--rw service-protection
     |     +--rw traffic-requirements  |  |  +--rw min-bandwidth?                  uint64 service-protection-type?   service-protection-type
     |  |  |  +--rw max-latency?                    uint32 sequence-number-length?    sequence-number-field
     |  |  +--rw max-latency-variation?          uint32 aggregation-header
     |  |  |  +--rw max-loss? mpls-label-stack
     |  |  |     +--rw entry* [id]
     |  |  |        +--rw id               uint8
     |  |  |        +--rw max-consecutive-loss-tolerance? uint32 label?           rt-types:mpls-label
     |  |  |        +--rw max-misordering?                uint32 ttl?             uint8
     |  |  |        +--rw traffic-specification traffic-class?   uint8
     |  |  +--ro services*             service-sub-layer-ref
     |  +--rw interval?                     uint32 incoming
     |     +--rw aggregation-header
     |     |  +--rw max-packets-per-interval?     uint32 mpls-label-stack
     |     |     +--rw max-payload-size?             uint32 entry* [id]
     |     |        +--rw average-packets-per-interval? uint32 id               uint8
     |     |        +--rw average-payload-size?         uint32 label?           rt-types:mpls-label
     |     |        +--rw ttl?             uint8
     |     |        +--rw traffic-class?   uint8
     |     +--ro services*             service-sub-layer-ref
     +--rw service-sub-layer
     |  +--rw service-sub-layer-list* [name]
     |     +--rw name                      string
     |     +--rw service-rank?             uint8
     |     +--rw (service-type)
     |     |  +--:(non-grouped)
     |     |  |  +--rw non-grouped
     |     |  |     +--rw traffic-profile?          traffic-profile-ref
     |     |  |     +--rw service-operation-type?
     |     |  |             service-operation-type
     |     |  +--:(grouped)
     |     |     +--rw grouped
     |     |        +--rw group-ref?   aggregation-grp-ref
     |     +--rw service-protection
     |     |  +--rw service-protection-type?   service-protection-type
     |     |  +--rw sequence-number-length?    sequence-number-field
     |     +--rw service-operation-type?   service-operation-type
     |     +--rw incoming
     |     |  +--rw (incoming-options)
     |     |     +--:(ingress-proxy)     +--:(ingress-application)
     |     |     |  +--rw app-flow*   app-flow-ref
     |     |     +--:(detnet-service-identification)
     |     |     |  +--rw (detnet-flow-type)?
     |     |     |     +--:(ip-detnet-flow)
     |     |     |     |  +--rw src-ip-prefix?      inet:ip-prefix
     |     |     |     |  +--rw dest-ip-prefix?     inet:ip-prefix
     |     |     |     |  +--rw next-header?        uint8
     |     |     |     |  +--rw traffic-class?      uint8
     |     |     |     |  +--rw flow-label?         inet:ipv6-flow-label
     |     |     |     |  +--rw source-port
     |     |     |     |  |  +--rw (port-range-or-operator)?
     |     |     |     |  |     +--:(range)
     |     |     |     |  |     |  +--rw lower-port    inet:port-number
     |     |     |     |  |     |  +--rw upper-port    inet:port-number
     |     |     |     |  |     +--:(operator)
     |     |     |     |  |        +--rw operator?   operator
     |     |     |     |  |        |       packet-fields:operator
     |     |     |     |  |        +--rw port        inet:port-number
     |     |     |     |  +--rw destination-port
     |     |     |     |  |  +--rw (port-range-or-operator)?
     |     |     |     |  |     +--:(range)
     |     |     |     |  |     |  +--rw lower-port    inet:port-number
     |     |     |     |  |     |  +--rw upper-port    inet:port-number
     |     |     |     |  |     +--:(operator)
     |     |     |     |  |        +--rw operator?   operator
     |     |     |     |  |        |       packet-fields:operator
     |     |     |     |  |        +--rw port        inet:port-number
     |     |     |     |  +--rw ipsec-spi?          ipsec-spi
     |     |     |     +--:(mpls-detnet-flow)
     |     |     |        +--rw (label-space)?
     |     |     |           +--:(context-label-space)
     |     |     |           |  +--rw mpls-label-stack
     |     |     |           |     +--rw entry* [id]
     |     |     |           |        +--rw id               uint8
     |     |     |           |        +--rw label?
     |     |     |           |        |       rt-types:mpls-label
     |     |     |           |        +--rw ttl?             uint8
     |     |     |           |        +--rw traffic-class?   uint8
     |     |     |           +--:(platform-label-space)
     |     |     |              +--rw label?   rt-types:mpls-label
     |     |     +--:(aggregated-service)
     |     |     |  +--rw outgoing service-sub-layer*   service-sub-layer-ref
     |     |     +--:(aggregated-forwarding)
     |     |        +--rw (outgoing-options) forwarding-sub-layer*
     |           +--:(egress-proxy)     |                forwarding-sub-layer-ref
     |     +--rw app-flow*              app-flow-ref outgoing
     |        +--rw (outgoing-options)
     |           +--:(detnet-service-outgoing)
     |           |  +--rw service-outgoing-list*
     |           |          [service-outgoing-index]
     |           |     +--rw service-outgoing-index    uint8
     |           |     +--rw (header-type)?
     |           |     |  +--:(detnet-mpls-header)
     |           |     |  |  +--rw mpls-label-stack
     |           |     |  |     +--rw entry* [id]
     |           |     |  |        +--rw id               uint8
     |           |     |  |        +--rw label?
     |           |     |  |        |       rt-types:mpls-label
     |           |     |  |        +--rw ttl?             uint8
     |           |     |  |        +--rw traffic-class?   uint8
     |           |     |  +--:(detnet-ip-header)
     |           |     |     +--rw src-ip-address?     inet:ip-address
     |           |     |     +--rw dest-ip-address?    inet:ip-address
     |           |     |     +--rw next-header?        uint8
     |           |     |     +--rw traffic-class?      uint8
     |           |     |     +--rw flow-label?
     |           |     |     |       inet:ipv6-flow-label
     |           |     |     +--rw source-port?        inet:port-number
     |           |     |     +--rw destination-port?   inet:port-number
     |           |     +--rw next-layer* [index]
     |           |        +--rw index                   uint8
     |           |        +--rw forwarding-sub-layer?
     |           |                forwarding-sub-layer-ref
     +--rw forwarding-sub-layer
     |  +--rw forwarding-sub-layer-list* [name]           +--:(detnet-service-aggregation)
     |           |  +--rw name                       string aggregation-service-sub-layer?
     |     +--ro forwarding-id?             uint16           |     +--rw traffic-requirements  |       service-sub-layer-ref
     |           |  +--rw min-bandwidth?                  uint64 service-label
     |           |     +--rw max-latency?                    uint32 mpls-label-stack
     |           |        +--rw max-latency-variation?          uint32 entry* [id]
     |           |           +--rw max-loss? id               uint8
     |           |           +--rw max-consecutive-loss-tolerance? uint32
     | label?           rt-types:mpls-label
     |  +--rw max-misordering?                uint32           |           +--rw traffic-specification ttl?             uint8
     |           |           +--rw interval?                     uint32
     | traffic-class?   uint8
     |  +--rw max-packets-per-interval?     uint32           +--:(egress-proxy)
     |           |  +--rw max-payload-size?             uint32 app-flow*   app-flow-ref
     |           +--:(detnet-service-operation)
     |           |  +--rw average-packets-per-interval? uint32 service-sub-layer*   service-sub-layer-ref
     |           +--:(detnet-forwarding-operation)
     |              +--rw average-payload-size?         uint32 forwarding-sub-layer*
     |                      forwarding-sub-layer-ref
     +--rw forwarding-sub-layer
        +--rw forwarding-sub-layer-list* [name]
           +--rw name                         string
           +--rw traffic-profile?             traffic-profile-ref
           +--rw forwarding-operation-type?   forwarding-operations-type
     |
           +--rw incoming
           |     |  +--rw (incoming-options)
           |     |     +--:(detnet-service-forwarding)
           |     |     |  +--rw  +--ro service-sub-layer*   service-sub-layer-ref
           |     |     +--:(detnet-forwarding-identification)
           |     |  +--rw interface?            if:interface-ref
           |     |  +--rw (detnet-flow-type)?
           |     |     +--:(ip-detnet-flow)
           |     |     |  +--rw src-ip-prefix?      inet:ip-prefix
           |     |     |  +--rw dest-ip-prefix?     inet:ip-prefix
           |     |     |  +--rw next-header?        uint8
           |     |     |  +--rw traffic-class?      uint8
           |     |     |  +--rw flow-label?         inet:ipv6-flow-label
           |     |     |  +--rw source-port
           |     |     |  |  +--rw (port-range-or-operator)?
           |     |     |  |     +--:(range)
           |     |     |  |     |  +--rw lower-port    inet:port-number
           |     |     |  |     |  +--rw upper-port    inet:port-number
           |     |     |  |     +--:(operator)
           |     |     |  |        +--rw operator?   operator
           |     |     |  |        |       packet-fields:operator
           |     |     |  |        +--rw port        inet:port-number
           |     |     |  +--rw destination-port
           |     |     |  |  +--rw (port-range-or-operator)?
           |     |     |  |     +--:(range)
           |     |     |  |     |  +--rw lower-port    inet:port-number
           |     |     |  |     |  +--rw upper-port    inet:port-number
           |     |     |  |     +--:(operator)
           |     |     |  |        +--rw operator?   operator
           |     |     |  |        |       packet-fields:operator
           |     |     |  |        +--rw port        inet:port-number
           |     |     |  +--rw ipsec-spi?          ipsec-spi
           |     |     +--:(mpls-detnet-flow)
           |     |        +--rw (label-space)?
           |     |           +--:(context-label-space)
           |     |           |  +--rw mpls-label-stack
           |     |           |     +--rw entry* [id]
           |     |           |        +--rw id               uint8
           |     |           |        +--rw label?
           |     |           |        |       rt-types:mpls-label
           |     |           |        +--rw ttl?             uint8
           |     |           |        +--rw traffic-class?   uint8
           |     |           +--:(platform-label-space)
           |     |              +--rw label?   rt-types:mpls-label
           |     +--rw outgoing     +--:(aggregated-forwarding)
           |        +--rw (outgoing-options)
     |           +--:(detnet-service-operation)
     | forwarding-sub-layer*
           |                forwarding-sub-layer-ref
           +--rw service-sub-layer*  service-sub-layer-ref
     | outgoing
              +--rw (outgoing-options)
                 +--:(detnet-forwarding-outgoing)
                 |  +--rw (next-hop-options)
                 |     +--:(simple-next-hop)
                 |     |  +--rw outgoing-interface?   if:interface-ref
                 |     |  +--rw (flow-type)?
                 |     |     +--:(ip)
                 |     |     |  +--rw (operation-type)?
                 |     |     |     +--:(ip-forwarding)
                 |     |     |     |  +--rw next-hop-address?
                 |     |     |     |          inet:ip-address
                 |     |     |     +--:(mpls-over-ip-encapsulation)
                 |     |     |        +--rw src-ip-address?
                 |     |     |        |       inet:ip-address
                 |     |     |        +--rw dest-ip-address?
                 |     |     |        |       inet:ip-address
                 |     |     |        +--rw next-header?        uint8
                 |     |     |        +--rw traffic-class?      uint8
                 |     |     |        +--rw flow-label?
                 |     |     |        |       inet:ipv6-flow-label
                 |     |     |        +--rw source-port?
                 |     |     |        |       inet:port-number
                 |     |     |        +--rw destination-port?
                 |     |     |                inet:port-number
                 |     |     +--:(mpls)
                 |     |        +--rw mpls-label-stack
                 |     |           +--rw entry* [id]
                 |     |              +--rw id               uint8
                 |     |              +--rw label?
                 |     |              |       rt-types:mpls-label
                 |     |              +--rw ttl?             uint8
                 |     |              +--rw traffic-class?   uint8
                 |     +--:(next-hop-list)
                 |        +--rw next-hop-list
                 |           +--rw next-hop* [hop-index]
                 |              +--rw hop-index             uint8
                 |              +--rw outgoing-interface?
                 |              |       if:interface-ref
                 |              +--rw (flow-type)?
                 |                 +--:(ip)
                 |                 |  +--rw (operation-type)?
                 |                 |     +--:(ip-forwarding)
                 |                 |     |  +--rw next-hop-address?
                 |                 |     |          inet:ip-address
                 |                 |     +--:(mpls-over-ip-encapsulation)     +--:(mpls-over-ip-
                 |                 |        | encapsulation)
                 |                 |        +--rw src-ip-address?
                 |                 |        |       inet:ip-address
                 |                 |        +--rw dest-ip-address?
                 |                 |        |       inet:ip-address
                 |                 |        +--rw next-header?
                 |                 |        |       uint8
                 |                 |        +--rw traffic-class?
                 |                 |        |       uint8
                 |                 |        +--rw flow-label?
                 |                 |        |       inet:ipv6-flow-label
                 |                 |        +--rw source-port?
                 |                 |        |       inet:port-number
                 |                 |        +--rw destination-port?
                 |                 |                inet:port-number
                 |                 +--:(mpls)
                 |                    +--rw mpls-label-stack
                 |                       +--rw entry* [id]
                 |                          +--rw id               uint8
                 |                          +--rw label?
                 |                          |       rt-types:mpls-label
                 |                          +--rw ttl?             uint8
                 |                          +--rw traffic-class?   uint8
     +--rw sub-network
        +--rw sub-network-list* [name]
           +--rw name  string

  grouping ip-header:
    +--rw src-ip-address?   inet:ip-address
    +--rw dest-ip-address?  inet:ip-address
    +--rw next-header?      uint8
    +--rw traffic-class?    uint8
    +--rw flow-label?       inet:ipv6-flow-label
    +--rw source-port?      inet:port-number
    +--rw destination-port? inet:port-number
  grouping l2-header:
    +--rw source-mac-address?      yang:mac-address
    +--rw destination-mac-address? yang:mac-address
    +--rw ethertype?               eth:ethertype
    +--rw vlan-id?                 uint16
    +--rw pcp?                     uint8
  grouping destination-ip-port-identification:
    +--rw destination-port
       +--rw (port-range-or-operator)?
          +--:(range)
                 +--:(detnet-service-aggregation)
                 |  +--rw lower-port  inet:port-number aggregation-service-sub-layer?
                 |  +--rw upper-port  inet:port-number
          +--:(operator)
             +--rw operator?   operator
             +--rw port        inet:port-number
  grouping source-ip-port-identification:
    +--rw source-port
       +--rw (port-range-or-operator)?
          +--:(range)  |  +--rw lower-port  inet:port-number       service-sub-layer-ref
                 |  +--rw upper-port  inet:port-number
          +--:(operator) optional-forwarding-label
                 |     +--rw operator?   operator mpls-label-stack
                 |        +--rw port        inet:port-number
  grouping ip-flow-identification: entry* [id]
                 |           +--rw src-ip-prefix?    inet:ip-prefix id               uint8
                 |           +--rw dest-ip-prefix?   inet:ip-prefix label?           rt-types:mpls-label
                 |           +--rw next-header? ttl?             uint8
                 |           +--rw traffic-class?   uint8
    +--rw flow-label?       inet:ipv6-flow-label
    +--rw source-port
                 +--:(detnet-forwarding-aggregation)
                 |  +--rw (port-range-or-operator)? aggregation-forwarding-sub-layer?
                 |     +--:(range)  |       forwarding-sub-layer-ref
                 |  +--rw lower-port  inet:port-number
    | forwarding-label
                 |     +--rw upper-port  inet:port-number
    |     +--:(operator) mpls-label-stack
                 |        +--rw operator?   operator entry* [id]
                 |           +--rw port        inet:port-number
    +--rw destination-port
    |  +--rw (port-range-or-operator)?
    |     +--:(range)
    |     |  +--rw lower-port  inet:port-number
    |     |  +--rw upper-port  inet:port-number
    |     +--:(operator)
    |        +--rw operator?   operator
    |        +--rw port        inet:port-number
    +--rw ipsec-spi?        ipsec-spi
  grouping mpls-flow-identification:
    +--rw (label-space)?
       +--:(context-label-space)
       |  +--rw mpls-label-stack
       |     +--rw entry* [id]
       |        +--rw id             uint8
       |        +--rw label?         rt-types:mpls-label
       |        +--rw ttl?           uint8
       |        +--rw traffic-class? uint8
       +--:(platform-label-space)
          +--rw label?            rt-types:mpls-label
  grouping traffic-specification:
    +--rw traffic-specification
       +--rw interval?                     uint32
       +--rw max-packets-per-interval?     uint32
       +--rw max-payload-size?             uint32
       +--rw average-packets-per-interval? uint32
       +--rw average-payload-size?         uint32
  grouping traffic-requirements:
    +--rw traffic-requirements
       +--rw min-bandwidth?                  uint64
       +--rw max-latency?                    uint32
       +--rw max-latency-variation?          uint32
       +--rw max-loss?                       uint8
       +--rw max-consecutive-loss-tolerance? uint32
       +--rw max-misordering?                uint32
  grouping data-flow-spec:
    +--rw (data-flow-type)?
       +--:(tsn-app-flow)
       |  +--rw source-mac-address?      yang:mac-address
       |  +--rw destination-mac-address? yang:mac-address
       |  +--rw ethertype?               eth:ethertype
       |  +--rw vlan-id?                 uint16
       |  +--rw pcp?                     uint8
       +--:(ip-app-flow)
       |  +--rw src-ip-prefix?           inet:ip-prefix
       |  +--rw dest-ip-prefix?          inet:ip-prefix
       |  +--rw next-header?             uint8
       |  +--rw traffic-class?           uint8
       |  +--rw flow-label?              inet:ipv6-flow-label
       |  +--rw source-port
       |  |  +--rw (port-range-or-operator)?
       |  |     +--:(range)
       |  |     |  +--rw lower-port  inet:port-number
       |  |     |  +--rw upper-port  inet:port-number
       |  |     +--:(operator)
       |  |        +--rw operator?   operator
       |  |        +--rw port        inet:port-number
       |  +--rw destination-port
       |  |  +--rw (port-range-or-operator)?
       |  |     +--:(range)
       |  |     |  +--rw lower-port  inet:port-number
       |  |     |  +--rw upper-port  inet:port-number
       |  |     +--:(operator)
       |  |        +--rw operator?   operator
       |  |        +--rw port        inet:port-number
       |  +--rw ipsec-spi?               ipsec-spi
       +--:(mpls-app-flow)
          +--rw (label-space)?
             +--:(context-label-space)
             |  +--rw mpls-label-stack
             |     +--rw entry* [id]
             |        +--rw id             uint8
             |        +--rw label?         rt-types:mpls-label
             |        +--rw ttl?           uint8
             |        +--rw traffic-class? uint8
             +--:(platform-label-space)
                +--rw label?                   rt-types:mpls-label
  grouping detnet-flow-spec:
    +--rw (detnet-flow-type)?
       +--:(ip-detnet-flow)
       |  +--rw src-ip-prefix?    inet:ip-prefix
       |  +--rw dest-ip-prefix?   inet:ip-prefix
       |  +--rw next-header?      uint8
       |  +--rw traffic-class?    uint8
       |  +--rw flow-label?       inet:ipv6-flow-label
       |  +--rw source-port
       |  |  +--rw (port-range-or-operator)?
       |  |     +--:(range)
       |  |     |  +--rw lower-port  inet:port-number
       |  |     |  +--rw upper-port  inet:port-number
       |  |     +--:(operator)
       |  |        +--rw operator?   operator
       |  |        +--rw port        inet:port-number
       |  +--rw destination-port
       |  |  +--rw (port-range-or-operator)?
       |  |     +--:(range)
       |  |     |  +--rw lower-port  inet:port-number
       |  |     |  +--rw upper-port  inet:port-number
       |  |     +--:(operator)
       |  |        +--rw operator?   operator
       |  |        +--rw port        inet:port-number
       |  +--rw ipsec-spi?        ipsec-spi
       +--:(mpls-detnet-flow)
          +--rw (label-space)?
             +--:(context-label-space)
             |  +--rw mpls-label-stack
             |     +--rw entry* [id]
             |        +--rw id             uint8
             |        +--rw label?         rt-types:mpls-label
             |        +--rw ttl?           uint8
             |        +--rw traffic-class? uint8
             +--:(platform-label-space)
                +--rw label?            rt-types:mpls-label
  grouping app-flows-ref:
    +--rw app-flow* app-flow-ref
  grouping service-sub-layer-ref:
    +--rw service-sub-layer* service-sub-layer-ref
  grouping forwarding-sub-layer-ref:
    +--rw forwarding-sub-layer* forwarding-sub-layer-ref
  grouping detnet-header:
    +--rw (header-type)?
       +--:(detnet-mpls-header)
       |  +--rw mpls-label-stack
       |     +--rw entry* [id]
       |        +--rw id             uint8
       |        +--rw label?         rt-types:mpls-label
       |        +--rw ttl?           uint8
       |        +--rw traffic-class? uint8
       +--:(detnet-ip-header)
          +--rw src-ip-address?   inet:ip-address
          +--rw dest-ip-address?  inet:ip-address
          +--rw next-header?      uint8
          +--rw traffic-class?    uint8
          +--rw flow-label?       inet:ipv6-flow-label
          +--rw source-port?      inet:port-number
          +--rw destination-port? inet:port-number
  grouping detnet-app-next-hop-content:
    +--rw (next-hop-options)
       +--:(simple-next-hop)
       |  +--rw outgoing-interface? if:interface-ref
       |  +--rw (flow-type)?
       |     +--:(ip)
       |     |  +--rw next-hop-address?   inet:ip-address
       |     +--:(mpls)
       |        +--rw mpls-label-stack
       |           +--rw entry* [id]
       |              +--rw id             uint8
       |              +--rw label?         rt-types:mpls-label
       |              +--rw ttl?           uint8
       |              +--rw traffic-class? uint8
       +--:(next-hop-list)
          +--rw next-hop-list
             +--rw next-hop* [hop-index]
                +--rw hop-index           uint8
                +--rw outgoing-interface? if:interface-ref
                +--rw (flow-type)?
                   +--:(ip)
                   |  +--rw next-hop-address?   inet:ip-address
                   +--:(mpls)
                      +--rw mpls-label-stack
                         +--rw entry* [id]
                            +--rw id             uint8
                            +--rw label?         rt-types:mpls-label
                            +--rw ttl?           uint8
                            +--rw traffic-class? uint8
  grouping detnet-forwarding-next-hop-content:
    +--rw (next-hop-options)
       +--:(simple-next-hop)
       |  +--rw outgoing-interface? if:interface-ref
       |  +--rw (flow-type)?
       |     +--:(ip)
       |     |  +--rw (operation-type)?
       |     |     +--:(ip-forwarding)
       |     |     |  +--rw next-hop-address?   inet:ip-address
       |     |     +--:(mpls-over-ip-encapsulation)
       |     |        +--rw src-ip-address?     inet:ip-address
       |     |        +--rw dest-ip-address?    inet:ip-address
       |     |        +--rw next-header?        uint8
       |     |        +--rw traffic-class?      uint8
       |     |        +--rw flow-label?         inet:ipv6-flow-label
       |     |        +--rw source-port?        inet:port-number
       |     |        +--rw destination-port?   inet:port-number
       |     +--:(mpls)
       |        +--rw mpls-label-stack
       |           +--rw entry* [id]
       |              +--rw id             uint8 id               uint8
                 |           +--rw label?           rt-types:mpls-label
                 |           +--rw ttl?             uint8
                 |           +--rw traffic-class?   uint8
       +--:(next-hop-list)
          +--rw next-hop-list
             +--rw next-hop* [hop-index]
                +--rw hop-index           uint8
                +--rw outgoing-interface? if:interface-ref
                +--rw (flow-type)?
                   +--:(ip)
                   |  +--rw (operation-type)?
                   |     +--:(ip-forwarding)
                   |     |  +--rw next-hop-address?   inet:ip-address
                   |     +--:(mpls-over-ip-encapsulation)
                   |        +--rw src-ip-address?     inet:ip-address
                   |        +--rw dest-ip-address?    inet:ip-address
                   |        +--rw next-header?        uint8
                   |        +--rw traffic-class?      uint8
                   |        +--rw flow-label?         inet:ipv6-flow-label
                   |        +--rw source-port?        inet:port-number
                 +--:(detnet-service-operation)
                 |  +--rw destination-port?   inet:port-number
                   +--:(mpls)
                      +--rw mpls-label-stack
                         +--rw entry* [id]
                            +--rw id             uint8
                            +--rw label?         rt-types:mpls-label
                            +--rw ttl?           uint8 service-sub-layer*   service-sub-layer-ref
                 +--:(detnet-forwarding-operation)
                    +--rw traffic-class? uint8

6. forwarding-sub-layer*
                            forwarding-sub-layer-ref

7.  DetNet Configuration YANG Model

<CODE BEGINS>
module ietf-detnet-config {
  namespace "urn:ietf:params:xml:ns:yang:ietf-detnet-config";
  prefix "ietf-detnet";

  import ietf-yang-types {
    prefix "yang";
  }

  import ietf-inet-types{
    prefix "inet";
  }

  import ietf-ethertypes {
    prefix "eth";
  }

  import ietf-routing-types {
    prefix "rt-types";
  }

  import ietf-packet-fields {
    prefix "packet-fields";
  }
  import ietf-interfaces {
    prefix "if";
  }

  organization
    "IETF DetNet Working Group";

  contact
    "WG Web:   <http://tools.ietf.org/wg/detnet/>
     WG List:  <mailto: detnet@ietf.org>
     WG Chair: Lou Berger
                 <mailto:lberger@labn.net>

                 Janos Farkas
                 <mailto:janos.farkas@ericsson.com>

     Editor:   Xuesong Geng
                <mailto:gengxuesong@huawei.com>

     Editor:   Mach Chen
                <mailto:mach.chen@huawei.com>

     Editor:   Yeoncheol Ryoo
                <mailto:dbduscjf@etri.re.kr>";
                <mailto:dbduscjf@etri.re.kr>

     Editor:   Don Fedyk
                <mailto:dfedyk@labn.net>";

     Editor:   Zhenqiang Li
                <mailto:lizhenqiang@chinamobile.com>
                <mailto:dfedyk@labn.net>;

     Editor:   Reshad Rahman
                <mailto:rrahman@cisco.com>

     Editor:   Zhenqiang Li
                <mailto:lizhenqiang@chinamobile.com>";

  description
    "This YANG module describes the parameters needed
     for DetNet flow configuration and flow status
     reporting";

  revision 2020-03-04 {
    description
      "initial revision";
    reference
      "RFC XXXX: draft-ietf-detnet-yang-02";
  }

  identity status {
    description
      "Base identity from which all application-status
       actions are derived";
  }

  identity none {
    base status;
    description
      "Application no ingress/egress";

    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity ready {
    base status;
    description
      "Application ingress/egress ready";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity failed {
    base status;
    description
      "Application ingres/egresss failed";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity out-of-service {
    base status;
    description
      "Application Administratively blocked";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity partial-failed {
    base status;
    description
    "This YANG module describes the parameters needed
     for DetNet flow configuration
      "Application One or more Egress ready, and one or more Egress
       failed.  The DetNet flow status

  reporting";

  revision 2020-07-13 {
    description "initial revision"; can be used if the Ingress is
       Ready.";
    reference "RFC XXXX: draft-ietf-detnet-yang-02";
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  typedef app-flow-ref {
    type leafref {
      path "/ietf-detnet:detnet"
         + "/ietf-detnet:app-flows"
         + "/ietf-detnet:app-flow"
         + "/ietf-detnet:name";
    }
  }

  typedef service-sub-layer-ref {
    type leafref {
      path "/ietf-detnet:detnet"
         + "/ietf-detnet:service-sub-layer"
         + "/ietf-detnet:service-sub-layer-list"
         + "/ietf-detnet:name";
    }
  }

  typedef forwarding-sub-layer-ref {
    type leafref {
      path "/ietf-detnet:detnet"
         + "/ietf-detnet:forwarding-sub-layer"
         + "/ietf-detnet:forwarding-sub-layer-list"
         + "/ietf-detnet:name";
    }
  }

  typedef sub-network-ref aggregation-grp-ref {
    type leafref {
      path "/ietf-detnet:detnet"
         + "/ietf-detnet:sub-network" "/ietf-detnet:service-aggregation-group"
         + "/ietf-detnet:group-name";
    }
  }

  typedef traffic-profile-ref {
    type leafref {
      path "/ietf-detnet:detnet"
         + "/ietf-detnet:sub-network-list" "/ietf-detnet:traffic-profile"
         + "/ietf-detnet:name"; "/ietf-detnet:profile-number";
    }
  }

  typedef ipsec-spi {
    type uint32 {
      range "1..max";
    }
    description
      "SPI";
  }

  typedef service-operation-type {
    type enumeration {
      enum service-initiation {
        description
          "Operation for DetNet service sub-layer encapsulation";
      }
      enum service-termination {
        description
          "Operation for DetNet service sub-layer decapsulation";
      }
      enum service-relay {
        description
          "Operation for DetNet service sub-layer swap";
      }
      enum non-detnet {
        description
          "No operation for DetNet service sub-layer";
      }
    }
  }

  typedef forwarding-operations-type {
    type enumeration {
      enum forward {
        description
          "Operation forward to next-hop";
      }
      enum impose-and-forward {
        description
          "Operation impose outgoing label(s) and forward to
           next-hop";
      }
      enum pop-and-forward {
        description
          "Operation pop incoming label and forward to next-hop";
      }
      enum pop-impose-and-forward {
        description
          "Operation pop incoming label, impose one or more
           outgoing label(s) and forward to next-hop";
      }
      enum swap-and-forward {
        description
          "Operation swap incoming label, with outgoing label and
           forward to next-hop";
      }
      enum pop-and-lookup {
        description
          "Operation pop incoming label and perform a lookup";
      }
    }
    description
      "MPLS operations types";
  }
  typedef service-protection-type {
    type enumeration {
      enum none {
        description
          "no service protection provide";
      }
      enum replication {
        description
          "A Packet Replication Function (PRF) replicates
           DetNet flow packets and forwards them to one or
           more next hops in the DetNet domain.  The number
           of packet copies sent to each next hop is a
           DetNet flow specific parameter at the node doing
           the replication.  PRF can be implemented by an
           edge node, a relay node, or an end system";
      }
      enum elimination {
        description
          "A Packet Elimination Function (PEF) eliminates
           duplicate copies of packets to prevent excess
           packets flooding the network or duplicate
           packets being sent out of the DetNet domain.
           PEF can be implemented by an edge node, a relay
           node, or an end system.";
      }
      enum ordering {
        description
          "A Packet Ordering Function (POF) re-orders
           packets within a DetNet flow that are received
           out of order.  This function can be implemented
           by an edge node, a relay node, or an end system.";
      }
      enum elimination-ordering {
        description
          "A combination of PEF and POF that can be
           implemented by an edge node, a relay node, or
           an end system.";
      }
      enum elimination-replication {
        description
          "A combination of PEF and PRF that can be
           implemented by an edge node, a relay node, or
           an end system";
      }
      enum elimination-ordering-replicaiton {
        description
          "A combination of PEF, POF and PRF that can be
           implemented by an edge node, a relay node, or
           an end system";
      }
    }
  }

  typedef sequence-number-generation-type {
    type enumeration {
      enum copy-from-app-flow {
        description
          "Copy the app-flow sequence number to the DetNet-flow";
      }
      enum generate-by-detnet-flow {
        description
          "Generate the sequence number by DetNet flow";
      }
    }
  }

  typedef sequence-number-field {
    type enumeration {
      enum zero-sn {
        description
          "there is no DetNet sequence number field.";
      }
      enum short-sn {
        value 16;
        description
          "there is 16bit DetNet sequence number field";
        value 16;
      }
      enum long-sn {
        value 28;
        description
          "there is 28bit DetNet sequence number field";
        value 28;
      }
    }
  }

  identity status {
    description
      "Base identity from which all application-status
       actions are derived";
  }
  identity none {
    base "status";
    description
      "Application no ingress/egress";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity ready {
    base "status";
    description
      "Application ingress/egress ready";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
      }

  identity failed {
    base "status";
    description
      "Application ingres/egresss failed";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
    }

  identity out-of-service {
    base "status";
    description
      "Application Administratively blocked";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8";
  }

  identity partial-failed

  typedef aggregation-group {
    base "status";
    type string;
    description
      "Application One or more Egress ready, and one or more Egress
      failed.  The DetNet flow can be used if
      "The name of the Ingress is
      Ready.";
    reference
      "draft-ietf-detnet-flow-information-model-06 Section 5.8"; aggregation group";
  }

  grouping ip-header {
    description
      "The IPv4/IPv6 packet header information";
    leaf src-ip-address {
      type inet:ip-address;
      description
        "The source IP address of the header";
    }

    leaf dest-ip-address {
      type inet:ip-address;
      description
        "The destination IP address of the header";
    }

    leaf next-header {
      type uint8;
      description
        "The next header of the IPv6 header";
    }

    leaf traffic-class {
      type uint8;
      description
        "The traffic class value of the header";
    }

    leaf flow-label {
      type inet:ipv6-flow-label;
      description
        "The flow label value of the header";
    }

    leaf source-port {
      type inet:port-number;
      description
        "The source port number";
    }

    leaf destination-port {
      type inet:port-number;
      description
        "The destination port number";
    }
  }

  grouping l2-header {
    description
      "The Ethernet or TSN packet header information";
    leaf source-mac-address {
      type yang:mac-address;
      description
        "The source MAC address value of the ethernet header";

    }

    leaf destination-mac-address {
      type yang:mac-address;
      description
        "The destination MAC address value of the ethernet header";
    }

    leaf ethertype {
      type eth:ethertype;
      description
        "The ethernet packet type value of the ethernet header";
    }

    leaf vlan-id {
      type uint16;
      description
        "The Vlan value of the ethernet header";
    }

    leaf pcp {
      type uint8;
      description
        "The priority value of the ethernet header";
    }
  }

  grouping destination-ip-port-identification {
    description
      "The TCP/UDP port(source/destination) identification information";
    container destination-port {
      uses packet-fields:port-range-or-operator;
    }
  }

  grouping source-ip-port-identification {
    description
      "The TCP/UDP port(source/destination) identification information";
    container source-port {
      uses packet-fields:port-range-or-operator;
    }
  }

  grouping ip-flow-identification {
    description
      "The IPv4/IPv6 packet header identification information";
    leaf src-ip-prefix {
      type inet:ip-prefix;
      description
        "The source IP address of the header";
    }

    leaf dest-ip-prefix {
      type inet:ip-prefix;
      description
        "The destination IP address of the header";
    }

    leaf next-header {
      type uint8;
      description
        "The next header of the IPv6 header";
    }

    leaf traffic-class {
      type uint8;
      description
        "The traffic class value of the header";
    }

    leaf flow-label {
      type inet:ipv6-flow-label;
      description
        "The flow label value of the header";
    }

    uses source-ip-port-identification;

    uses destination-ip-port-identification;

    leaf ipsec-spi {
      type ipsec-spi;
      description
        "Security parameter index of SA entry";
    }
  }

  grouping mpls-flow-identification {
    description
      "The MPLS packet header identification information";
    choice label-space {
      description
        "";
      case context-label-space {
        uses rt-types:mpls-label-stack;
      }
      case platform-label-space {
        leaf label {
          type rt-types:mpls-label;
        }
      }
    }
  }

  grouping traffic-specification {
    container traffic-specification {
      description
        "traffic-specification specifies how the Source
         transmits packets for the flow.  This is the
         promise/request of the Source to the network.
         The network uses this traffic specification
         to allocate resources and adjust queue
         parameters in network nodes.";
      reference
        "draft-ietf-detnet-flow-information-model";
      leaf interval {
        type uint32;
        description
          "The period of time in which the traffic
           specification cannot be exceeded";
      }

      leaf max-packets-per-interval{ max-packets-per-interval {
        type uint32;
        description
          "The maximum number of packets that the
           source will transmit in one Interval.";
      }

      leaf max-payload-size{ max-payload-size {
        type uint32;
        description
          "The maximum payload size that the source
           will transmit.";
      }

      leaf average-packets-per-interval {
        type uint32;
        description
          "The average number of packets that the
           source will transmit in one Interval";
      }

      leaf average-payload-size {
        type uint32;
        description
          "The average payload size that the
           source will transmit.";
      }
    }
  }

  grouping traffic-requirements {
    container traffic-requirements {
      description
        "FlowRequirements: defines the attributes of the App-flow
         regarding bandwidth, latency, latency variation, loss, and
         misordering tolerance.";
      leaf min-bandwidth {
        type uint64;
        description
          "MinBandwidth is the minimum bandwidth that has to be
           guaranteed for the DetNet service.  MinBandwidth is
           specified in octets per second.";
      }

      leaf max-latency {
        type uint32;
        description
          "MaxLatency is the maximum latency from Ingress to Egress(es)
           for a single packet of the DetNet flow.  MaxLatency is
           specified as an integer number of nanoseconds";
      }

      leaf max-latency-variation {
        type uint32;
        description
          "MaxLatencyVariation is the difference between the minimum and
           the maximum end-to-end one-way latency.  MaxLatencyVariation
           is specified as an integer number of nanoseconds.";
      }

      leaf max-loss {
        type uint8;
        description
          "MaxLoss defines the maximum Packet Loss Ratio (PLR) parameter
           for the DetNet service between the Ingress and Egress(es) of
           the DetNet domain.";
      }

      leaf max-consecutive-loss-tolerance {
        type uint32;
        description
          "Some applications have special loss requirement, such as
           MaxConsecutiveLossTolerance.  The maximum consecutive loss
           tolerance parameter describes the maximum number of
           consecutive packets whose loss can be tolerated.  The maximum
           consecutive loss tolerance can be measured for example based
           on sequence number";
      }

      leaf max-misordering {
        type uint32;
        description
          "MaxMisordering describes the tolerable maximum number of
           packets that can be received out of order.  The maximum
           allowed misordering can be measured for example based on
           sequence number.  The value zero for the maximum allowed
           misordering indicates that in order delivery is required,
           misordering cannot be tolerated.";
      }
    }
  }

  grouping data-flow-spec {
    description
      "app-flow identification";
    choice data-flow-type {
      case tsn-app-flow {
        uses l2-header;
      }

      case ip-app-flow {
        uses ip-flow-identification;
      }

      case mpls-app-flow {
        uses mpls-flow-identification;
      }
    }
  }

  grouping detnet-flow-spec {
    description
      "detnet-flow identificatioin"; identification";
    choice detnet-flow-type {
      case ip-detnet-flow {
        uses ip-flow-identification;
      }
      case mpls-detnet-flow {
        uses mpls-flow-identification;
      }
    }
  }

  grouping app-flows-ref {
    description
      "incoming or outgoing app-flow reference group";
    leaf-list app-flow {
      type app-flow-ref;
      description
        "List of ingress or egress app-flows";
    }
  }

  grouping service-sub-layer-ref {
    description
      "incoming or outgoing service sub-layer reference group";
    leaf-list service-sub-layer {
      type service-sub-layer-ref;
      description
        "List of incoming or outgoing service sub-layer
         that has to aggregate or disaggregate";
    }
  }

  grouping forwarding-sub-layer-ref {
    description
      "incoming or outgoing forwarding sub-layer reference group";
    leaf-list forwarding-sub-layer {
      type forwarding-sub-layer-ref;
      description
        "List of incoming or outgoing forwarding sub-layer
         that has to aggregate or disaggregate";
    }
  }

  grouping detnet-header {
    description
      "DetNet header info for DetNet encapsulation or swap";
    choice header-type { {:
      case detnet-mpls-header {
        description
        "MPLS label stack for DetNet MPLS encapsulation or
         for forwarding";
        uses rt-types:mpls-label-stack;
      }
      case detnet-ip-header {
        description
          "IPv4/IPv6 packet header for DetNet IP encapsulation";
        uses ip-header;
      }
    }
  }

  grouping aggregation-header {
    description
      "DetNet aggregation header  DetNet encapsulation";
    container aggregation-header {
      description
        "MPLS label stack for DetNet MPLS encapsulation or
         forwarding";
      uses rt-types:mpls-label-stack;
    }
  }

  grouping detnet-app-next-hop-content {
    description
      "Generic parameters of DetNet next hops.";
    choice next-hop-options {
      mandatory true;
      description
        "Options for next hops.
         It is expected that further cases will be added through
         augments from other modules, e.g., for recursive
         next hops.";
      case simple-next-hop {
        description
          "This case represents a simple next hop consisting of the
           next-hop address and/or outgoing interface.
           Modules for address families MUST augment this case with a
           leaf containing a next-hop address of that address
           family.";
        leaf outgoing-interface {
          type if:interface-ref;
        }

        choice flow-type {
          case ip {
            leaf next-hop-address {
              type inet:ip-address;
            }
          }

          case mpls {
            uses rt-types:mpls-label-stack;
          }
        }
      }

      case next-hop-list {
        container next-hop-list {
          description
            "Container for multiple next hops.";
          list next-hop {
            key "hop-index";
            description
              "An entry in a next-hop list.
               Modules for address families MUST augment this list
               with a leaf containing a next-hop address of that
               address family.";
            leaf hop-index {
              type uint8;
              description
                "";
            }

            leaf outgoing-interface {
              type if:interface-ref;
            }

            choice flow-type {
              case ip {
                leaf next-hop-address {
                  type inet:ip-address;
                }
              }

              case mpls {
                uses rt-types:mpls-label-stack;
              }
            }
          }
        }
      }
    }
  }

  grouping detnet-forwarding-next-hop-content {
    description
      "Generic parameters of DetNet next hops.";
    choice next-hop-options {
      mandatory true;
      description
        "Options for next hops.
         It is expected that further cases will be added through
         augments from other modules, e.g., for recursive
         next hops.";
      case simple-next-hop {
        description
          "This case represents a simple next hop consisting of the
           next-hop address and/or outgoing interface.
           Modules for address families MUST augment this case with a
           leaf containing a next-hop address of that address
           family.";
        leaf outgoing-interface {
          type if:interface-ref;
        }

        choice flow-type {
          case ip {
            choice operation-type {
              case ip-forwarding {
                leaf next-hop-address {
                  type inet:ip-address;
                }
              }

              case mpls-over-ip-encapsulation {
                uses ip-header;
              }
            }
          }

          case mpls {
            uses rt-types:mpls-label-stack;
          }
        }
      }

      case next-hop-list {
        container next-hop-list {
          description
            "Container for multiple next hops.";
          list next-hop {
            key "hop-index";
            description
              "An entry in a next-hop list.

               Modules for address families MUST augment this list
               with a leaf containing a next-hop address of that
               address family.";
            leaf hop-index {
              type uint8;
              description
                "";
            }

            leaf outgoing-interface {
              type if:interface-ref;
            }

            choice flow-type {
              case ip {
                choice operation-type {
                  case ip-forwarding {
                    leaf next-hop-address {
                      type inet:ip-address;
                    }
                  }

                  case mpls-over-ip-encapsulation {
                    uses ip-header;
                  }
                }
              }

              case mpls {
                uses rt-types:mpls-label-stack;
              }
            }
          }
        }
      }
    }
  }

  container detnet {
    container detnet {
    list traffic-profile {
      key "profile-number";
      description
        "A traffic profile";
      leaf profile-number {
        type uint16;
        description
          "An Aggregation group ID. Zero means the service is not
           part of a group";
      }
      uses traffic-requirements;

      uses traffic-specification;

      leaf-list member-applications {
        type app-flow-ref;
        config false;
        description
          "Applicaions attached to this profile";
      }

      leaf-list member-services {
        type service-sub-layer-ref;
        config false;
        description
          "Services attached to this profile";
      }

      leaf-list member-groups {
        type aggregation-grp-ref;
        config false;
        description
          "Groups attached to this profile";
      }

      leaf-list member-forwarding-sublayers {
        type forwarding-sub-layer-ref;
        config false;
        description
          "Forwarding sub-layer attached to this profile";
      }
    }

    container app-flows {
      description
        "The DetNet app-flow configuration";
      list app-flow {
        key "name";
        description
          "";
        leaf name {
          type "string";
          description
            "The name to identify the DetNet app-flow";
        }

        leaf app-id {
          type uint16;
          config false;
          description
            "The DetNet Application ID";
        }
        leaf app-flow-bidir-congruent {
          type boolean;
          description
            "Defines the data path requirement of the App-flow whether
             it must share the same data path and physical path
             for both directions through the network,
             e.g., to provide congruent paths in the two directions.";
        }

        leaf outgoing-service {
          type service-sub-layer-ref;
          //config
          config false;
          description
            "Binding to this applications outgoing
             service";
        }

        leaf incoming-service {
          type service-sub-layer-ref;
          //config
          config false;
          description
            "Binding to this applications incoming
             service";
        }
        uses traffic-requirements;
        uses traffic-specification;

        leaf traffic-profile {
          type traffic-profile-ref;
          description
            "The Traffic Profile for this group";
        }

        container ingress {
          // key "name";  This should be a list for aggregation
          description
            "Ingress DetNet application flows or a compound flow";
          leaf name {
            type string;
            description
              "Ingress DetNet application";
          }

          leaf app-flow-status {
            type identityref {
              base status;
            }
            config false;
            description
              "Status of ingress application flow";
          }
          leaf interface {
            type if:interface-ref;
          }

          uses data-flow-spec;
        } //End of app-ingress

        container egress {
          description
            "Route's next-hop attribute.";
          // key "name";  This should be a list for aggregation
          leaf name {
            type string;
            description
              "Egress DetNet application";
          }

          choice application-type {
            container ethernet {
              leaf ethernet-place-holder {
                type string;
                description
                  "Place holder for matching ethernet";
              }
            }

            container ip-mpls {
              uses detnet-app-next-hop-content;
            }
          }
        }
      }
    }

    list service-aggregation-group {
      key "group-name";
      description
        "A group of services";
      leaf group-name {
        type aggregation-group;
        description
          "An Aggregation group name. Empty means the service is not
           part of a group";
      }

      container outgoing {
        leaf traffic-profile {
          type traffic-profile-ref;
          description
            "The Traffic Profile for this group";
        }

        container service-protection {
          leaf service-protection-type {
            type service-protection-type;
            description
              "The DetNet service protection type such as PRF, PEF,
               PEOF,PERF, and PEORF";
          }

          leaf sequence-number-length {
            type sequence-number-field;
            description
              "Sequence number filed can choice 0 bit, 16bit, 28 bit
               filed";
            }
          }

        uses aggregation-header;

        leaf-list services {
          type service-sub-layer-ref;
          config false;
          description
            "List of registered services";
        }
      }

      container incoming {
        uses aggregation-header;

        leaf-list services {
          type service-sub-layer-ref;
          config false;
          description
            "List of registered services";
        }
      }
    }

    container service-sub-layer {
      description
        "The DetNet service sub-layer configuration";
      list service-sub-layer-list {
        key "name";
        description
          "";
        leaf name {
          type string;
          description
            "The name of the DetNet service sub-layer";
        }

        leaf service-id service-rank {
          type uint16;
          config false; uint8;
          description
            "The DetNet service ID"; rank for this service";
        }

        choice service-type {
          mandatory true;
          container non-grouped {
            leaf service-rank traffic-profile {
              type uint8; traffic-profile-ref;
              description
                "The DetNet rank Traffic Profile for this service";
            }
        uses traffic-requirements;
        uses traffic-specification;

            leaf service-operation-type {
              type service-operation-type;
            }
          }

          container grouped {
            leaf group-ref {
              type aggregation-grp-ref;
              description
                "The aggregation group this service belongs to";
            }
          }
        }

        container service-protection {
          leaf service-protection-type {
            type service-protection-type;
            description
              "The DetNet service protection type such as PRF, PEF,
               PEOF,PERF, and PEORF";
          }

          leaf sequence-number-length {
            type sequence-number-field;
            description
            "sequence
              "Sequence number filed field can choice 0 bit, 16bit, 28 bit
               filed";
          }
        }

        leaf service-operation-type {
          type service-operation-type;
        }

        container incoming {
          description
            "The DetNet service sub-layer incoming configuration.";
          choice incoming-options {
            mandatory true;
            description
              "";
            case ingress-proxy ingress-application {
              uses app-flows-ref;
            }

            case detnet-service-identification {
              uses detnet-flow-spec;
            }

            case aggregated-service {
              uses service-sub-layer-ref;
            }

            case aggregated-forwarding {
              uses forwarding-sub-layer-ref;
            }
          }
        }

        container outgoing {
          description
            "The DetNet service sub-layer outgoing configuration.";
          choice outgoing-options {
            mandatory true;
            description
              "";
            case egress-proxy {
              uses app-flows-ref;
            }
            case detnet-service-outgoing {
              //uses detnet-service-next-hop-content;
              list service-outgoing-list {
                key "service-outgoing-index";
                leaf service-outgoing-index {
                  type uint8;
                }
                uses detnet-header;

                list next-layer{ next-layer {
                  key "index";
                  description
                    "lower-layer info";
                  leaf index {
                    type uint8;
                  }

                  leaf forwarding-sub-layer {
                    type forwarding-sub-layer-ref;
                  }
                }
              }
            }

            case detnet-service-aggregation {
              leaf aggregation-service-sub-layer {
                type service-sub-layer-ref;
              }

              container service-label {
                uses rt-types:mpls-label-stack;
              }
            }

            case egress-proxy {
              uses app-flows-ref;
            }

            case detnet-service-operation {
              uses service-sub-layer-ref;
            }

            case detnet-forwarding-operation {
              uses forwarding-sub-layer-ref;
            }
          }
        }
      }
    }

    container forwarding-sub-layer {
      description
        "The DetNet forwarding sub-layer configuration";
      list forwarding-sub-layer-list {
        key "name";
        description
          "";
        leaf name {
          type string;
          description
            "The name of the DetNet forwarding sub-layer";
        }

        leaf forwarding-id traffic-profile {
          type uint16;
          config false; traffic-profile-ref;
          description
            "The DetNet forwarding ID"; Traffic Profile for this group";
        }
        uses traffic-requirements;
        uses traffic-specification;

        leaf forwarding-operation-type {
          type forwarding-operations-type;
        }

        container incoming {
          description
            "The DetNet forwarding sub-layer incoming configuration.";
          choice incoming-options {
            mandatory true;
            description
              "";
            case detnet-service-forwarding {
              uses
              leaf-list service-sub-layer {
                type service-sub-layer-ref;
                config false;
                description
                  "";
              }
            }

            case detnet-forwarding-identification {
              leaf interface {
                type if:interface-ref;
                description
                  "";
              }

              uses detnet-flow-spec;
            }

            case aggregated-forwarding {
              uses forwarding-sub-layer-ref;
            }
          }

        }

        container outgoing {
          description
            "The DetNet forwarding sub-layer outbound configuration.";
          choice outgoing-options {
            mandatory true;
            description
              "";
            case detnet-service-operation {
              uses service-sub-layer-ref;
            }
            case detnet-forwarding-outgoing {
              uses detnet-forwarding-next-hop-content;
            }

            case detnet-service-aggregation {
              leaf aggregation-service-sub-layer {
                type service-sub-layer-ref;
              }

              container optional-forwarding-label {
                uses rt-types:mpls-label-stack;
              }
            }

            case detnet-forwarding-aggregation {
              leaf aggregation-forwarding-sub-layer {
                type forwarding-sub-layer-ref;
              }

              container sub-network forwarding-label {
      description "";
      list sub-network-list
                uses rt-types:mpls-label-stack;
              }
            }

            case detnet-service-operation {
        key "name";
        description "";
        leaf name
              uses service-sub-layer-ref;
            }

            case detnet-forwarding-operation {
          type string;
          description "";
              uses forwarding-sub-layer-ref;
            }
          }
        }
      }
    }
  }
}
<CODE ENDS>

7.
8.  Open Issues

   There are some open issues that are still under discussion:

   o  Aggregation.

   o  Going along the the updated data plane model.

   o  Terminologies.

   These issues will be resolved in the following versions of the draft.

8.

9.  IANA Considerations

   This document makes no request of IANA.

   Note to RFC Editor: this section may be removed on publication as an
   RFC.

9.

10.  Security Considerations

   <TBD>

10.  Acknowledgements

11.  Acknowledgements

12.  References
11.1.

12.1.  Normative References

   [I-D.finn-detnet-bounded-latency]
              Finn, N., Boudec, J., Mohammadpour, E., Zhang, J., Varga,
              B., and J. Farkas, "DetNet Bounded Latency", draft-finn-
              detnet-bounded-latency-04 (work in progress), June 2019.

   [I-D.ietf-detnet-flow-information-model]
              Varga, B., Farkas, J., Cummings, R., Jiang, Y., and D.
              Fedyk, "DetNet Flow Information Model", draft-ietf-detnet-
              flow-information-model-10 (work in progress), May 2020.

   [I-D.ietf-detnet-ip]
              Varga, B., Farkas, J., Berger, L., Fedyk, D., and S.
              Bryant, "DetNet Data Plane: IP", draft-ietf-detnet-ip-07
              (work in progress), July 2020.

   [I-D.ietf-detnet-mpls]
              Varga, B., Farkas, J., Berger, L., Malis, A., Bryant, S.,
              and J. Korhonen, "DetNet Data Plane: MPLS", draft-ietf-
              detnet-mpls-07 (work in progress), June 2020.

   [I-D.ietf-detnet-topology-yang]
              Geng, X., Chen, M., Li, Z., and R. Rahman, "Deterministic
              Networking (DetNet) Topology YANG Model", draft-ietf-
              detnet-topology-yang-00 (work in progress), January 2019.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC6991]  Schoenwaelder, J., Ed., "Common YANG Data Types",
              RFC 6991, DOI 10.17487/RFC6991, July 2013,
              <https://www.rfc-editor.org/info/rfc6991>.

   [RFC7950]  Bjorklund, M., Ed., "The YANG 1.1 Data Modeling Language",
              RFC 7950, DOI 10.17487/RFC7950, August 2016,
              <https://www.rfc-editor.org/info/rfc7950>.

   [RFC8655]  Finn, N., Thubert, P., Varga, B., and J. Farkas,
              "Deterministic Networking Architecture", RFC 8655,
              DOI 10.17487/RFC8655, October 2019,
              <https://www.rfc-editor.org/info/rfc8655>.

11.2.

12.2.  Informative References

   [I-D.geng-detnet-info-distribution]
              Geng, X., Chen, M., Li, Z., Qin, F., and L. Qiang, "IGP-TE
              Extensions for DetNet Information Distribution", draft-
              geng-detnet-info-distribution-04 (work in progress), July
              2019.

   [I-D.ietf-detnet-use-cases]
              Grossman, E., "Deterministic Networking Use Cases", draft-
              ietf-detnet-use-cases-20 (work in progress), December
              2018.

   [I-D.ietf-teas-yang-te]
              Saad, T., Gandhi, R., Liu, X., Beeram, V., and I. Bryskin,
              "A YANG Data Model for Traffic Engineering Tunnels and
              Interfaces", draft-ietf-teas-yang-te-23 (work in
              progress), March 2020.

   [I-D.ietf-teas-yang-te-topo]
              Liu, X., Bryskin, I., Beeram, V., Saad, T., Shah, H., and
              O. Dios, "YANG Data Model for Traffic Engineering (TE)
              Topologies", draft-ietf-teas-yang-te-topo-22 (work in
              progress), June 2019.

   [I-D.thubert-tsvwg-detnet-transport]
              Thubert, P., "A Transport Layer for Deterministic
              Networks", draft-thubert-tsvwg-detnet-transport-01 (work
              in progress), October 2017.

   [I-D.varga-detnet-service-model]

   [I-D.ietf-detnet-flow-information-model]
              Varga, B. and J. B., Farkas, J., Cummings, R., Jiang, Y., and D.
              Fedyk, "DetNet Service Flow Information Model", draft-
              varga-detnet-service-model-02 draft-ietf-detnet-
              flow-information-model-10 (work in progress), May
              2017.

   [IEEE802.1CB]
              IEEE, "IEEE, "Frame Replication and Elimination for
              Reliability (IEEE Draft P802.1CB)", 2017,
              <http://www.ieee802.org/1/files/private/cb-drafts/>.",
              2016.

   [IEEE802.1Q-2014]
              "IEEE, "IEEE Std 802.1Q Bridges and Bridged Networks",
              2014, <http://ieeexplore.ieee.org/document/6991462/>.",
              2014.

   [IEEE802.1Qbu]
              IEEE, "IEEE, "IEEE Std 802.1Qbu Bridges and Bridged
              Networks - Amendment 26: Frame Preemption", 2016,
              <http://ieeexplore.ieee.org/document/7553415/>.", 2016.

   [IEEE802.1Qbv]
              "IEEE, "IEEE Std 802.1Qbu Bridges and Bridged Networks -
              Amendment 25: Enhancements for Scheduled Traffic", 2015,
              <http://ieeexplore.ieee.org/document/7572858/>.", 2016.

   [IEEE802.1Qcc]
              IEEE, "IEEE, "Stream Reservation Protocol (SRP)
              Enhancements and Performance Improvements (IEEE Draft
              P802.1Qcc)", 2017,
              <http://www.ieee802.org/1/files/private/cc-drafts/>.".

   [IEEE802.1Qch]
              IEEE, "IEEE, "Cyclic Queuing and Forwarding (IEEE Draft
              P802.1Qch)", 2017,
              <http://www.ieee802.org/1/files/private/ch-drafts/>.",
              2016.

   [IEEE802.1Qci]
              IEEE, "IEEE, "Per-Stream Filtering and Policing (IEEE
              Draft P802.1Qci)", 2016,
              <http://www.ieee802.org/1/files/private/ci-drafts/>.",
              2016.

   [RFC3209]  Awduche, D., Berger, L., Gan, D., Li, T., Srinivasan, V.,
              and G. Swallow, "RSVP-TE: Extensions to RSVP for LSP
              Tunnels", RFC 3209, DOI 10.17487/RFC3209, December 2001,
              <https://www.rfc-editor.org/info/rfc3209>.

   [RFC4875]  Aggarwal, R., Ed., Papadimitriou, D., Ed., and S.
              Yasukawa, Ed., "Extensions to Resource Reservation
              Protocol - Traffic Engineering (RSVP-TE) for Point-to-
              Multipoint TE Label Switched Paths (LSPs)", RFC 4875,
              DOI 10.17487/RFC4875, May 2007,
              <https://www.rfc-editor.org/info/rfc4875>.

   [RFC8342]  Bjorklund, M., Schoenwaelder, J., Shafer, P., Watsen, K.,
              and R. Wilton, "Network Management Datastore Architecture
              (NMDA)", RFC 8342, DOI 10.17487/RFC8342, March 2018,
              <https://www.rfc-editor.org/info/rfc8342>. 2020.

Authors' Addresses

   Xuesong Geng
   Huawei Technologies

   Email: gengxuesong@huawei.com

   Mach(Guoyi) Chen
   Huawei Technologies

   Email: mach.chen@huawei.com

   Yeoncheol Ryoo
   ETRI

   Email: dbduscjf@etri.re.kr

   Don Fedyk
   LabN Consulting, L.L.C.

   Email: dfedyk@labn.net

   Zhenqiang Li
   China Mobile

   Email: lizhenqiang@chinamobile.com

   Reshad Rahman
   Cisco Systems

   Email: rrahman@cisco.com

   Zhenqiang Li
   China Mobile

   Email: lizhenqiang@chinamobile.com