| Network Working Group | X. Geng |
| Internet-Draft | M. Chen |
| Intended status: Standards Track | Huawei Technologies |
| Expires: December 13, 2020 | Y. Ryoo |
| ETRI | |
| Z. Li | |
| China Mobile | |
| R. Rahman | |
| Cisco Systems | |
| D. Fedyk | |
| LabN Consulting, L.L.C. | |
| June 11, 2020 |
Deterministic Networking (DetNet) Configuration YANG Model
draft-ietf-detnet-yang-06
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).
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.
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 and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress."
This Internet-Draft will expire on December 13, 2020.
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 carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must 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.
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.
This documents uses the terminologies defined in [RFC8655].
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.
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].
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:
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:
The picture shows that the general structure of the DetNet YANG Model:
+-----------+
|ietf-detnet|
+-----+-----+
|
+-------------+---------------+
| | |
+-----+-----+ +-----+-----+ +-------+------+
| 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. In each instance, there are four elements: name, in-segments, out-segments and operations, which means:
These elements are different when the technologies used for the specific instance is different. So this structure is abstract, which allows for different technology specifics as defined in different data plane drafts.
module: ietf-detnet-config-modify
+--rw app-flows
| +--rw app-flow* [name]
| +--rw name string
| +--ro app-id? uint16
| +--rw app-flow-bidir-congruent? boolean
| +--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
| +--rw in-segment
| | +--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
| | | | +--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
| +--rw out-segment
| +--rw (outgoing-options)
| +--:(ingress-proxy)
| | +--rw service-sub-layer? service-sub-layer-ref
| +--:(egress)
| +--rw (next-hop-options)
| +--:(simple-next-hop)
| | +--rw 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
| | +--rw outgoing-interface? if:interface-ref
| +--:(next-hop-list)
| +--rw next-hop-list
| +--rw next-hop* [hop-index]
| +--rw hop-index uint8
| +--rw 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
| +--rw outgoing-interface? if:interface-ref
+--rw service-sub-layer
| +--rw service-sub-layer-list* [name]
| +--rw name string
| +--ro service-id? uint16
| +--rw service-rank? uint8
| +--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
| +--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 in-segment
| | +--rw (incoming-options)
| | +--:(ingress-proxy)
| | | +--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
| | | | +--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
| +--rw out-segment
| +--rw (outgoing-options)
| +--:(egress-proxy)
| | +--rw app-flow* app-flow-ref
| +--:(detnet-service-output)
| +--rw service-output-list* [service-output-index]
| +--rw service-output-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]
| +--rw name string
| +--ro forwarding-id? 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
| +--rw forwarding-operation-type? forwarding-operations-type
| +--rw in-segment
| | +--rw (incoming-options)
| | +--:(detnet-service-forwarding)
| | | +--rw 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
| | | | +--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
| +--rw out-segment
| +--rw (outgoing-options)
| +--:(service-operation)
| | +--rw service-sub-layer* service-sub-layer-ref
| +--:(detnet-forwarding-output)
| +--rw (next-hop-options)
| +--:(simple-next-hop)
| | +--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 outgoing-interface? if:interface-ref
| +--:(next-hop-list)
| +--rw next-hop-list
| +--rw next-hop* [hop-index]
| +--rw hop-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 outgoing-interface? if:interface-ref
+--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)
| +--rw lower-port inet:port-number
| +--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
| +--rw upper-port inet:port-number
+--:(operator)
+--rw operator? operator
+--rw port inet:port-number
grouping ip-flow-identification:
+--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
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 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
| +--rw outgoing-interface? if:interface-ref
+--:(next-hop-list)
+--rw next-hop-list
+--rw next-hop* [hop-index]
+--rw hop-index uint8
+--rw 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
+--rw outgoing-interface? if:interface-ref
grouping detnet-forwarding-next-hop-content:
+--rw (next-hop-options)
+--:(simple-next-hop)
| +--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 outgoing-interface? if:interface-ref
+--:(next-hop-list)
+--rw next-hop-list
+--rw next-hop* [hop-index]
+--rw hop-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 outgoing-interface? if:interface-ref
<CODE BEGINS>
module ietf-detnet-config-modify {
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-routing {
prefix "rt";
}
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: Zhenqiang Li
<mailto:lizhenqiang@chinamobile.com>
Editor: Reshad Rahman
<mailto:rrahman@cisco.com>
Editor: Yeoncheol Ryoo
<mailto:dbduscjf@etri.re.kr>";
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";
}
typedef app-flow-ref {
type leafref {
path "/ietf-detnet:app-flows"
+ "/ietf-detnet:app-flow"
+ "/ietf-detnet:name";
}
}
typedef service-sub-layer-ref {
type leafref {
path "/ietf-detnet:service-sub-layer"
+ "/ietf-detnet:service-sub-layer-list"
+ "/ietf-detnet:name";
}
}
typedef forwarding-sub-layer-ref {
type leafref {
path "/ietf-detnet:forwarding-sub-layer"
+ "/ietf-detnet:forwarding-sub-layer-list"
+ "/ietf-detnet:name";
}
}
typedef sub-network-ref {
type leafref {
path "/ietf-detnet:sub-network"
+ "/ietf-detnet:sub-network-list"
+ "/ietf-detnet:name";
}
}
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 {
description "there is 16bit DetNet sequence number field";
value 16;
}
enum long-sn {
description "there is 28bit DetNet sequence number field";
value 28;
}
}
}
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{
type uint32;
description
"The maximum number of packets that the
source will transmit in one Interval.";
}
leaf 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";
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 forwarding";
uses rt-types:mpls-label-stack;
}
case detnet-ip-header {
description
"IPv4/IPv6 packet header for DetNet IP encapsulation";
uses ip-header;
}
}
}
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.";
container mpls-header {
description
"MPLS label stack for DetNet MPLS encapsulation or forwarding";
uses rt-types:mpls-label-stack;
}
leaf outgoing-interface {
type if:interface-ref;
}
}
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 "";
}
container mpls-header {
description
"MPLS label stack for DetNet MPLS encapsulation or forwarding";
uses rt-types:mpls-label-stack;
}
leaf outgoing-interface {
type if:interface-ref;
}
}
}
}
}
}
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.";
uses detnet-header;
leaf outgoing-interface {
type if:interface-ref;
}
}
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 "";
}
uses detnet-header;
leaf outgoing-interface {
type if:interface-ref;
}
}
}
}
}
}
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.";
}
uses traffic-requirements;
uses traffic-specification;
container in-segment {
description "app-flow identification";
leaf interface {
type if:interface-ref;
description "";
}
uses data-flow-spec;
}
container out-segment {
description
"ingress proxy that incoming app-flow map to detnet-flow
and egress proxy that next-hop for outging app-flow";
choice outgoing-options {
mandatory true;
description
"";
case ingress-proxy {
leaf service-sub-layer {
type service-sub-layer-ref;
}
}
case egress {
uses detnet-app-next-hop-content;
}
}
}
}
}
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 {
type uint16;
config false;
description
"The DetNet service ID";
}
leaf service-rank {
type uint8;
description
"The DetNet rank for this service";
}
uses traffic-requirements;
uses traffic-specification;
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";
}
}
leaf service-operation-type {
type service-operation-type;
}
container in-segment {
description
"The DetNet service sub-layer inbound configuration.
This should not be used if this service operation is initiation";
choice incoming-options {
mandatory true;
description
"";
case ingress-proxy {
uses app-flows-ref;
}
case detnet-service-identification {
uses detnet-flow-spec;
}
}
}
container out-segment {
description
"The DetNet service sub-layer outbound configuration.
This should not be used
if this service operation is termination";
choice outgoing-options {
mandatory true;
description
"";
case egress-proxy {
uses app-flows-ref;
}
case detnet-service-output {
//uses detnet-service-next-hop-content;
list service-output-list {
key "service-output-index";
leaf service-output-index {
type uint8;
}
uses detnet-header;
list next-layer{
key "index";
description "lower-layer info";
leaf index {
type uint8;
}
leaf forwarding-sub-layer {
type 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 {
type uint16;
config false;
description
"The DetNet forwarding ID";
}
uses traffic-requirements;
uses traffic-specification;
leaf forwarding-operation-type {
type forwarding-operations-type;
}
container in-segment {
description
"The DetNet forwarding sub-layer inbound configuration. This should not be used
if this forwarding operation is impose-and-forward";
choice incoming-options {
mandatory true;
description
"";
case detnet-service-forwarding {
uses service-sub-layer-ref;
}
case detnet-forwarding-identification {
leaf interface {
type if:interface-ref;
description "";
}
uses detnet-flow-spec;
}
}
}
container out-segment {
description
"The DetNet forwarding sub-layer outbound configuration. This should not be used
if this forwarding operation is pop-and-lookup";
choice outgoing-options {
mandatory true;
description
"";
case service-operation {
uses service-sub-layer-ref;
}
case detnet-forwarding-output {
uses detnet-forwarding-next-hop-content;
}
}
}
}
}
container sub-network {
description "";
list sub-network-list {
key "name";
description "";
leaf name {
type string;
description "";
}
}
}
}
<CODE ENDS>
This is a model that is organized by the concepts in the flow model. In order to align with the principles in the flow document a ground up model was built. In order to illustrate this YANG model some example test configurations are used to validate the model. Building the DetNet YANG model is not that easy because the number of permutations of IP/MPLS data planes with and without aggregation at each layer is hard to keep straight. This model tries to follow the current DetNet data plane documents and supported data planes. The examples do not illustrate aggregation but the models are build for several levels of aggregation.
This YANG model consists of three main sections: application, service sub-layer and forwarding sub-layer, that use a number of common building blocks. Many of the building blocks are also the same as the first model presented in this document. To minimize duplication, leaf-refs between the sections are utilized. With a single leaf-ref between an application and a service sub-layer the backend code can relate the two instances. The backend code can also populate a read only instance of a leaf-ref for the operational view so leaf-refs only need to be configured once for both objects. Early versions of the model used leaf-refs configure mainly outside the service sub-layer, however this turned out being awkward because the in the current model of the service sub-layer presented here it is binding a service id to the leaf-ref. Therefore the leaf-ref for an application and a forwarding sub-layer is more naturally configured from the service sub-layer.
Another point about the model is each component has two unidirectional parts. Applications would typically contain both directions and become a complete bidirectional entity containing both directionsl of a flow. Service sub-layers components can be configured as unidirectional with only one direction being configured. Forwarding sub-layer components are unidirectional. Leaf-refs are used for each direction even though there are cases where a single leaf-ref could work in a bidirctional model. DetNet Services require configuarion of each undirectional flow and have configuration options based on the roles they play and the types of traffic mappings.
DetNet Edges have application, service and forwarding configuration. DetNet Relays only use DetNet services sub-layer and forwarding sub-layer configuration. DetNet Transit nodes may only have forwarding sub-layer configuration. The behavior is DetNet service dependent, such that a a physical node may be an edge node for some flows, it may be a relay node for some flows and it may be a transit node for some flows. The full YANG model is defined and only the relevant aspects are configured at each stage.
Aggregation may be configured at each of the instances. Aggregation is data plane specific. DetNet Service Sub-layer MPLS aggregation for example, from application to service adds a per Application Service sub-layer label. If a DetNet service is aggregated to another DetNet service there are a couple ways this can be accomplished.
A service sub-layer can play a role similar to an application to another service allowing aggregation of services. A service sub-layer can appear as relay service peering with that service. Relay functions are dependent in the traffic type. Aggregation can be achieved by encapsulation (MPLS) or by wild cards (IP) using the native IP header. IP headers that are used in place aggregate by allowing a broader address range (wild cards) or port range or DSCP filter. These aggregating flows also require the reverse operation to disaggregate the traffic at the edge of the DetNet service.
There are many ways to achieve aggregation and this can complicate the YANG design to some degree. The current models support aggregation but the configuration examples provided are illustrating no aggregation for this version of the draft.
module: ietf-detnet-configa
+--rw detnet
+--rw applications
| +--rw app-list* [name]
| | +--rw name string
| | +--ro app-id? uint16
| | +--rw app-flow-bidir-congruent? boolean
| | +--ro service-outbound? service-ref
| | +--ro service-inbound? service-ref
| | +--rw traffic-requirements
| | | +--rw min-bandwidth? uint64
| | | +--rw max-latency? uint32
| | | +--rw max-latency-variation? uint32
| | | +--rw max-loss? percent
| | | +--rw max-consecutive-loss-tolerance? uint32
| | | +--rw max-misordering? uint32
| | +--rw traffic-specification
| | +--rw interval? uint32
| | +--rw max-packets-per-interval? uint64
| | +--rw max-payload-size? uint32
| +--rw app-ingress* [name]
| | +--rw name string
| | +--ro app-flow-status? identityref
| | +--rw incoming-interface* if:interface-ref
| | +--rw (detnet-forwarding-type)?
| | +--:(ethernet)
| | | +--rw ethernet
| | | +--rw placeholder? string
| | +--:(ip)
| | | +--rw ip
| | | +--rw source inet:ip-prefix
| | | +--rw destination inet:ip-prefix
| | | +--rw protocol-next uint8
| | | +--rw dscp* uint8
| | | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | | +--rw (l4)?
| | | +--:(tcp)
| | | | +--rw tcp
| | | | +--rw source-port
| | | | | +--rw (source-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-operator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port inet:
port-number
| | | | | | +--rw upper-port inet:
port-number
| | | | | +--:(operator)
| | | | | +--rw operator? opera
tor
| | | | | +--rw port inet:
port-number
| | | | +--rw destination-port
| | | | +--rw (destination-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-operator)?
| | | | +--:(range)
| | | | | +--rw lower-port inet:
port-number
| | | | | +--rw upper-port inet:
port-number
| | | | +--:(operator)
| | | | +--rw operator? opera
tor
| | | | +--rw port inet:
port-number
| | | +--:(udp)
| | | | +--rw udp
| | | | +--rw source-port
| | | | | +--rw (source-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-operator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port inet:
port-number
| | | | | | +--rw upper-port inet:
port-number
| | | | | +--:(operator)
| | | | | +--rw operator? opera
tor
| | | | | +--rw port inet:
port-number
| | | | +--rw destination-port
| | | | +--rw (destination-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-operator)?
| | | | +--:(range)
| | | | | +--rw lower-port inet:
port-number
| | | | | +--rw upper-port inet:
port-number
| | | | +--:(operator)
| | | | +--rw operator? opera
tor
| | | | +--rw port inet:
port-number
| | | +--:(ipsec)
| | | +--rw ipsec
| | | +--rw ipsec-spi? ipsec-spi
| | +--:(mpls)
| | +--rw mpls
| | +--rw (label-space)?
| | +--:(interface)
| | | +--rw interface
| | | +--rw mpls-label-stack
| | | +--rw entry* [id]
| | | +--rw id uint8
| | | +--rw label? rt-types:mpls-
label
| | | +--rw ttl? uint8
| | | +--rw traffic-class? uint8
| | +--:(platform)
| | +--rw platform
| | +--rw mpls-label-stack
| | +--rw entry* [id]
| | +--rw id uint8
| | +--rw label? rt-types:mpls-
label
| | +--rw ttl? uint8
| | +--rw traffic-class? uint8
| +--rw app-egress* [name]
| +--rw name string
| +--ro app-flow-status? identityref
| +--rw next-hop
| +--rw (application-type)?
| +--:(ethernet)
| | +--rw ethernet
| | +--rw ethernet-place-holder? string
| +--:(ip-mpls)
| +--rw ip-mpls
| +--rw (next-hop-options)
| +--:(simple-next-hop)
| | +--rw simple-next-hop
| | +--rw outgoing-interface? if:interface
-ref
| | +--rw mpls-label-stack
| | +--rw entry* [id]
| | +--rw id uint8
| | +--rw label? rt-types:mp
ls-label
| | +--rw ttl? uint8
| | +--rw traffic-class? uint8
| +--:(special-next-hop)
| | +--rw special-next-hop
| | +--rw special-next-hop? enumeration
| +--:(next-hop)
| +--rw next-hop* [hop-index]
| +--rw hop-index uint8
| +--rw outgoing-interface? if:interface
-ref
| +--rw index? string
| +--rw backup-index? string
| +--rw loadshare? uint16
| +--rw role? nhlfe-role
| +--rw mpls-label-stack
| +--rw entry* [id]
| +--rw id uint8
| +--rw label? rt-types:mp
ls-label
| +--rw ttl? uint8
| +--rw traffic-class? uint8
+--rw services
| +--rw service-list* [name]
| +--rw name string
| +--ro service-id? uint16
| +--rw service-rank? uint8
| +--rw outbound
| | +--ro forward-sublayer-output* fwd-sub-layer-output-ref
| | +--rw service-protection-type? identityref
| | +--rw sequence_number_length? uint8
| | +--rw application-input* [name]
| | | +--rw name application-ref
| | | +--rw (detnet-forwarding-type)?
| | | +--:(ip)
| | | | +--rw ip
| | | | +--rw source inet:ip-prefix
| | | | +--rw destination inet:ip-prefix
| | | | +--rw protocol-next uint8
| | | | +--rw dscp* uint8
| | | | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | | | +--rw (l4)?
| | | | +--:(tcp)
| | | | | +--rw tcp
| | | | | +--rw source-port
| | | | | | +--rw (source-port)?
| | | | | | +--:(range-or-operator)
| | | | | | +--rw range-or-operator
| | | | | | +--rw (port-range-or-oper
ator)?
| | | | | | +--:(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 (destination-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port
inet:port-number
| | | | | | +--rw upper-port
inet:port-number
| | | | | +--:(operator)
| | | | | +--rw operator?
operator
| | | | | +--rw port
inet:port-number
| | | | +--:(udp)
| | | | | +--rw udp
| | | | | +--rw source-port
| | | | | | +--rw (source-port)?
| | | | | | +--:(range-or-operator)
| | | | | | +--rw range-or-operator
| | | | | | +--rw (port-range-or-oper
ator)?
| | | | | | +--:(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 (destination-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port
inet:port-number
| | | | | | +--rw upper-port
inet:port-number
| | | | | +--:(operator)
| | | | | +--rw operator?
operator
| | | | | +--rw port
inet:port-number
| | | | +--:(ipsec)
| | | | +--rw ipsec
| | | | +--rw ipsec-spi? ipsec-spi
| | | +--:(mpls-service-label)
| | | +--rw mpls-service-label? rt-types:mpls-label-g
eneral-use
| | +--rw prev-relay-services* [name]
| | | +--rw name service-ref
| | | +--rw (detnet-forwarding-type)?
| | | +--:(ip)
| | | | +--rw ip
| | | | +--rw source inet:ip-prefix
| | | | +--rw destination inet:ip-prefix
| | | | +--rw protocol-next uint8
| | | | +--rw dscp* uint8
| | | | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | | | +--rw (l4)?
| | | | +--:(tcp)
| | | | | +--rw tcp
| | | | | +--rw source-port
| | | | | | +--rw (source-port)?
| | | | | | +--:(range-or-operator)
| | | | | | +--rw range-or-operator
| | | | | | +--rw (port-range-or-oper
ator)?
| | | | | | +--:(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 (destination-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port
inet:port-number
| | | | | | +--rw upper-port
inet:port-number
| | | | | +--:(operator)
| | | | | +--rw operator?
operator
| | | | | +--rw port
inet:port-number
| | | | +--:(udp)
| | | | | +--rw udp
| | | | | +--rw source-port
| | | | | | +--rw (source-port)?
| | | | | | +--:(range-or-operator)
| | | | | | +--rw range-or-operator
| | | | | | +--rw (port-range-or-oper
ator)?
| | | | | | +--:(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 (destination-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(range)
| | | | | | +--rw lower-port
inet:port-number
| | | | | | +--rw upper-port
inet:port-number
| | | | | +--:(operator)
| | | | | +--rw operator?
operator
| | | | | +--rw port
inet:port-number
| | | | +--:(ipsec)
| | | | +--rw ipsec
| | | | +--rw ipsec-spi? ipsec-spi
| | | +--:(mpls-service-label)
| | | +--rw mpls-service-label? rt-types:mpls-label-g
eneral-use
| | +--rw traffic-requirements
| | | +--rw min-bandwidth? uint64
| | | +--rw max-latency? uint32
| | | +--rw max-latency-variation? uint32
| | | +--rw max-loss? percent
| | | +--rw max-consecutive-loss-tolerance? uint32
| | | +--rw max-misordering? uint32
| | +--rw traffic-specification
| | +--rw interval? uint32
| | +--rw max-packets-per-interval? uint64
| | +--rw max-payload-size? uint32
| +--rw inbound
| +--rw forward-sublayer-input* fwd-sub-layer-input-ref
| +--rw service-protection-type? identityref
| +--rw sequence_number_length? uint8
| +--rw application-output* [name]
| | +--rw name application-ref
| | +--rw (detnet-forwarding-type)?
| | +--:(ip)
| | | +--rw ip
| | | +--rw source inet:ip-prefix
| | | +--rw destination inet:ip-prefix
| | | +--rw protocol-next uint8
| | | +--rw dscp* uint8
| | | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | | +--rw (l4)?
| | | +--:(tcp)
| | | | +--rw tcp
| | | | +--rw source-port
| | | | | +--rw (source-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(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 (destination-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-oper
ator)?
| | | | +--:(range)
| | | | | +--rw lower-port
inet:port-number
| | | | | +--rw upper-port
inet:port-number
| | | | +--:(operator)
| | | | +--rw operator?
operator
| | | | +--rw port
inet:port-number
| | | +--:(udp)
| | | | +--rw udp
| | | | +--rw source-port
| | | | | +--rw (source-port)?
| | | | | +--:(range-or-operator)
| | | | | +--rw range-or-operator
| | | | | +--rw (port-range-or-oper
ator)?
| | | | | +--:(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 (destination-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-oper
ator)?
| | | | +--:(range)
| | | | | +--rw lower-port
inet:port-number
| | | | | +--rw upper-port
inet:port-number
| | | | +--:(operator)
| | | | +--rw operator?
operator
| | | | +--rw port
inet:port-number
| | | +--:(ipsec)
| | | +--rw ipsec
| | | +--rw ipsec-spi? ipsec-spi
| | +--:(mpls-service-label)
| | +--rw mpls-service-label? rt-types:mpls-label-g
eneral-use
| +--rw next-relay-services* [name]
| +--rw name service-ref
| +--rw (detnet-forwarding-type)?
| +--:(ip)
| | +--rw ip
| | +--rw source inet:ip-prefix
| | +--rw destination inet:ip-prefix
| | +--rw protocol-next uint8
| | +--rw dscp* uint8
| | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | +--rw (l4)?
| | +--:(tcp)
| | | +--rw tcp
| | | +--rw source-port
| | | | +--rw (source-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-oper
ator)?
| | | | +--:(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 (destination-port)?
| | | +--:(range-or-operator)
| | | +--rw range-or-operator
| | | +--rw (port-range-or-oper
ator)?
| | | +--:(range)
| | | | +--rw lower-port
inet:port-number
| | | | +--rw upper-port
inet:port-number
| | | +--:(operator)
| | | +--rw operator?
operator
| | | +--rw port
inet:port-number
| | +--:(udp)
| | | +--rw udp
| | | +--rw source-port
| | | | +--rw (source-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-oper
ator)?
| | | | +--:(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 (destination-port)?
| | | +--:(range-or-operator)
| | | +--rw range-or-operator
| | | +--rw (port-range-or-oper
ator)?
| | | +--:(range)
| | | | +--rw lower-port
inet:port-number
| | | | +--rw upper-port
inet:port-number
| | | +--:(operator)
| | | +--rw operator?
operator
| | | +--rw port
inet:port-number
| | +--:(ipsec)
| | +--rw ipsec
| | +--rw ipsec-spi? ipsec-spi
| +--:(mpls-service-label)
| +--rw mpls-service-label? rt-types:mpls-label-g
eneral-use
+--rw fwd-sub-layer-input* [name]
| +--rw name string
| +--rw incoming-interface* if:interface-ref
| +--rw (connectors)?
| | +--:(service-sub-layers)
| | | +--ro service-sub-layers* service-ref
| | +--:(forwarding-sub-layers)
| | +--ro forwarding-sub-layers* fwd-sub-layer-output-ref
| +--rw (detnet-forwarding-type)?
| +--:(ip)
| | +--rw ip
| | +--rw source inet:ip-prefix
| | +--rw destination inet:ip-prefix
| | +--rw protocol-next uint8
| | +--rw dscp* uint8
| | +--rw ipv6-flow-label? inet:ipv6-flow-label
| | +--rw (l4)?
| | +--:(tcp)
| | | +--rw tcp
| | | +--rw source-port
| | | | +--rw (source-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-operator)?
| | | | +--:(range)
| | | | | +--rw lower-port inet:por
t-number
| | | | | +--rw upper-port inet:por
t-number
| | | | +--:(operator)
| | | | +--rw operator? operator
| | | | +--rw port inet:por
t-number
| | | +--rw destination-port
| | | +--rw (destination-port)?
| | | +--:(range-or-operator)
| | | +--rw range-or-operator
| | | +--rw (port-range-or-operator)?
| | | +--:(range)
| | | | +--rw lower-port inet:por
t-number
| | | | +--rw upper-port inet:por
t-number
| | | +--:(operator)
| | | +--rw operator? operator
| | | +--rw port inet:por
t-number
| | +--:(udp)
| | | +--rw udp
| | | +--rw source-port
| | | | +--rw (source-port)?
| | | | +--:(range-or-operator)
| | | | +--rw range-or-operator
| | | | +--rw (port-range-or-operator)?
| | | | +--:(range)
| | | | | +--rw lower-port inet:por
t-number
| | | | | +--rw upper-port inet:por
t-number
| | | | +--:(operator)
| | | | +--rw operator? operator
| | | | +--rw port inet:por
t-number
| | | +--rw destination-port
| | | +--rw (destination-port)?
| | | +--:(range-or-operator)
| | | +--rw range-or-operator
| | | +--rw (port-range-or-operator)?
| | | +--:(range)
| | | | +--rw lower-port inet:por
t-number
| | | | +--rw upper-port inet:por
t-number
| | | +--:(operator)
| | | +--rw operator? operator
| | | +--rw port inet:por
t-number
| | +--:(ipsec)
| | +--rw ipsec
| | +--rw ipsec-spi? ipsec-spi
| +--:(mpls)
| +--rw mpls
| +--rw (label-space)?
| +--:(interface)
| | +--rw interface
| | +--rw mpls-label-stack
| | +--rw entry* [id]
| | +--rw id uint8
| | +--rw label? rt-types:mpls-lab
el
| | +--rw ttl? uint8
| | +--rw traffic-class? uint8
| +--:(platform)
| +--rw platform
| +--rw mpls-label-stack
| +--rw entry* [id]
| +--rw id uint8
| +--rw label? rt-types:mpls-lab
el
| +--rw ttl? uint8
| +--rw traffic-class? uint8
+--rw fwd-sub-layer-output* [name]
+--rw name string
+--rw connectors
| +--rw outbound-service* service-ref
| +--rw prev-forward-sub-layer* fwd-sub-layer-output-ref
+--rw traffic-requirements
| +--rw min-bandwidth? uint64
| +--rw max-latency? uint32
| +--rw max-latency-variation? uint32
| +--rw max-loss? percent
| +--rw max-consecutive-loss-tolerance? uint32
| +--rw max-misordering? uint32
+--rw traffic-specification
| +--rw interval? uint32
| +--rw max-packets-per-interval? uint64
| +--rw max-payload-size? uint32
+--rw next-hop
+--rw (next-hop-options)
+--:(simple-next-hop)
| +--rw simple-next-hop
| +--rw outgoing-interface? if:interface-ref
| +--rw mpls-label-stack
| +--rw entry* [id]
| +--rw id uint8
| +--rw label? rt-types:mpls-label
| +--rw ttl? uint8
| +--rw traffic-class? uint8
+--:(special-next-hop)
| +--rw special-next-hop
| +--rw special-next-hop? enumeration
+--:(next-hop)
+--rw next-hop* [hop-index]
+--rw hop-index uint8
+--rw outgoing-interface? if:interface-ref
+--rw index? string
+--rw backup-index? string
+--rw loadshare? uint16
+--rw role? nhlfe-role
+--rw mpls-label-stack
+--rw entry* [id]
+--rw id uint8
+--rw label? rt-types:mpls-label
+--rw ttl? uint8
+--rw traffic-class? uint8
<CODE BEGINS> file "ietf-detnet-configa@2020-06-02.yang"
module ietf-detnet-configa {
namespace "urn:ietf:params:xml:ns:yang:ietf-detnet-configa";
prefix "ietf-detnet";
import ietf-inet-types{
prefix "inet";
}
import ietf-routing-types {
prefix "rt-types";
}
import ietf-interfaces {
prefix "if";
}
import ietf-routing {
prefix "rt";
}
import ietf-mpls {
prefix "mpls";
}
import ietf-packet-fields {
prefix "packet-fields";
}
organization "IETF DetNet Working Group";
contact
" Editor: Don Fedyk dfedyk@labn.net ";
description
"This YANG module describes the parameters needed
for DetNet flow configuration and flow status reporting";
revision 2020-06-02 {
description "initial revision";
reference
"RFC XXXX: draft-ietf-detnet-flow-information-model-06";
}
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
"Application One or more Egress ready, and one or more Egress
failed. The DetNet flow can be used if the Ingress is
Ready.";
reference
"draft-ietf-detnet-flow-information-model-06 Section 5.8";
}
typedef ipsec-spi {
type uint32 {
range "1..max";
}
description
"SPI";
}
typedef application-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:applications" +
"/ietf-detnet:app-list/ietf-detnet:name";
}
description
"This type is used by applications ingress and egress to
refernce application.";
}
typedef application-ingress-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:applications" +
"/ietf-detnet:app-ingress/ietf-detnet:name";
}
description
"This type is used by applications to reference ingress
interfaces.";
}
typedef application-egress-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:applications" +
"/ietf-detnet:app-egress/ietf-detnet:name";
}
description
"This type is used by applications to reference egress
interfaces.";
}
typedef service-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:services" +
"/ietf-detnet:service-list/ietf-detnet:name";
}
description
"This type is used by applications and forwarding sub-layers
data models that need to reference a configured
service-sub-layer.";
}
typedef fwd-sub-layer-input-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:fwd-sub-layer-input"
+ "/ietf-detnet:name";
}
description
"This type is used by applications to reference input
interfaces.";
}
typedef fwd-sub-layer-output-ref {
type leafref {
path "/ietf-detnet:detnet/ietf-detnet:fwd-sub-layer-output"
+ "/ietf-detnet:name";
}
description
"This type is used by applications to reference output
interfaces.";
}
// Service protection
identity service-protection-type {
description
"Base identity from which specific
interface types are derived.";
}
identity no-protection {
base "service-protection-type";
description
"no service protection provided";
}
identity replication {
base "service-protection-type";
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";
}
identity elimination {
base "service-protection-type";
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.";
}
identity ordering {
base "service-protection-type";
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.";
}
identity elimination-ordering {
base "service-protection-type";
description
"A combination of PEF and POF that can be implemented by an
edge node, a relay node, or an end system.";
}
identity elimination-replication {
base "service-protection-type";
description
"A combination of PEF and PRF that can be implemented by an
edge node, a relay node, or an end system";
}
identity elimination-ordering-replication {
base "service-protection-type";
description
"A combination of PEF, POF and PRF that can be implemented by
an edge node, a relay node, or an end system";
}
typedef percent {
type uint8 {
range "0 .. 100";
}
description "Percentage";
}
grouping ip-ports {
container source-port {
choice source-port {
container range-or-operator {
uses packet-fields:port-range-or-operator;
description
"Source port definition from range or operator.";
}
description
"Choice of source port definition using range/operator or a
choice to support future 'case' statements, such as one
enabling a group of source ports to be referenced.";
}
description
"Source port definition.";
}
container destination-port {
choice destination-port {
container range-or-operator {
uses packet-fields:port-range-or-operator;
description
"Destination port definition from range or operator.";
}
description
"Choice of destination port definition using range/operator
or a choice to support future 'case' statements, such as
one enabling a group of source ports to be referenced.";
}
description
"Destination port definition.";
}
}
grouping ip-incoming {
description
"The IPv4 packet header identification information";
leaf source {
type inet:ip-prefix;
mandatory true;
description "IP source address prefix";
}
leaf destination {
type inet:ip-prefix;
description "IP destination address prefix";
mandatory true;
}
leaf protocol-next {
type uint8;
mandatory true;
description
"Internet Protocol number. Refers to the protocol of the
payload. In IPv6, this field is known as 'next-header', and
if extension headers are present, the protocol is present in
the 'upper-layer' header.";
reference
"RFC 791: Internet Protocol
RFC 8200: Internet Protocol, Version 6 (IPv6) Specification.";
}
leaf-list dscp {
type uint8 {
range "0 .. 64";
}
description
"The DSCP field of the header";
}
leaf ipv6-flow-label {
type inet:ipv6-flow-label;
description
"The DSCP field of the header";
}
choice l4 {
container tcp {
uses ip-ports;
}
container udp {
uses ip-ports;
}
container ipsec {
leaf ipsec-spi {
type ipsec-spi;
description
"Security parameter index of SA entry.";
}
}
}
} // End of ip-incoming
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-06 Section 5.5";
leaf interval {
type uint32;
description
"The period of time in which the traffic specification
cannot be exceeded";
}
leaf max-packets-per-interval{
type uint64;
units "bits";
description
"The maximum number of packets that the source will
transmit in one Interval.";
}
leaf max-payload-size{
type uint32;
description
"The maximum payload size in bytes 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.";
reference
"draft-ietf-detnet-flow-information-model-06 Section 5.9";
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 percent;
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.";
}
}
}
// Copied from ietf-routing
grouping next-hop-state-content {
description
"Generic state parameters of 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.";
container 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;
description
"Name of the outgoing interface.";
}
uses rt-types:mpls-label-stack;
}
container special-next-hop {
uses rt:special-next-hop;
}
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;
description
"Name of the outgoing interface.";
}
uses mpls:nhlfe-multiple-contents;
}
}
}
grouping mpls-incoming {
description "";
choice label-space {
description "";
container interface{
description
"MPLS label is associated with non-platform label space, all
of the F-labels and incoming interface information was used
for identification";
uses rt-types:mpls-label-stack;
} //End of non-platform-label-space
container platform {
description
"MPLS label is associated with platform label space, only
the F-label is used for identification";
uses rt-types:mpls-label-stack;
}
}
}
grouping ip-mpls-service {
choice detnet-forwarding-type {
container ip {
uses ip-incoming;
}
leaf mpls-service-label {
type rt-types:mpls-label-general-use;
description
"A service label for DetNet sent on egress, checked on
ingress";
} //End of Service-Label
} //End of detnet-forwarding-type */
} //End of ip-mpls-service */
grouping ip-mpls-profile {
choice detnet-forwarding-type {
container ip {
uses ip-incoming;
}
container mpls {
uses mpls-incoming;
} //End of mpls
} //End of detnet-forwarding-type */
} // ip-mpls-profile */
grouping ip-mpls-incoming {
leaf-list incoming-interface {
type if:interface-ref;
description
"The name of the interface";
}
choice detnet-forwarding-type {
description "Traffic type";
container ip {
description "IP encapsulation information";
uses ip-incoming;
}
container mpls {
uses mpls-incoming;
} //End of mpls
} //End of detnet-forwarding-type */
} // ip-mpls-incoming */
grouping eth-ip-mpls-incoming {
leaf-list incoming-interface {
type if:interface-ref;
description
"The name of the interface";
}
choice detnet-forwarding-type {
description "Traffic type";
container ethernet {
leaf placeholder {
type string;
description "Place holder for matching ethernet";
}
}
container ip {
description "IP encapsulation information";
uses ip-incoming;
}
container mpls {
uses mpls-incoming;
} //End of mpls
} //End of detnet-forwarding-type */
} // ip-mpls-incoming */
grouping service-group {
leaf service-protection-type {
type identityref {
base service-protection-type;
}
description
"The DetNet service protection type such as PRF, PEF,
PEOF, PERF, and PEORF";
}
leaf sequence_number_length {
type uint8 {
range "0 | 16 | 28";
}
default 0;
description
"When the sequence number field length is 16 or 28 bits for
a flow, the sequence number MUST be incremented by one for
each new app-flow packet sent. When the field length is 16
bits, d-CW bits 4 to 15 MUST be set to zero (0).";
}
}
container detnet {
container applications {
description
"DetNet applications";
list app-list {
key "name";
description
"list of the DetNet configurations";
leaf name {
type string;
description
"The name to identify the DetNet configuration";
}
leaf app-id {
type uint16;
config false;
description
"The DetNet service ID";
reference
"draft-ietf-detnet-flow-information-model-06 Section 6.1";
}
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 service-outbound{
type service-ref;
description "Binding to this applications outgoing
service";
}
leaf service-inbound{
type service-ref;
description "Binding to this applications incoming
service";
}
uses traffic-requirements;
uses traffic-specification;
}
list app-ingress {
key "name";
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";
}
uses eth-ip-mpls-incoming;
} //End of app-ingress
list app-egress {
key "name";
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 egress application flows";
}
container next-hop {
description
"Route's next-hop attribute.";
choice application-type {
container ethernet {
leaf ethernet-place-holder {
type string;
description "Place holder for matching ethernet";
}
}
container ip-mpls {
uses next-hop-state-content;
}
}
}
} // End of app-egress
} // End of applications
container services {
description
"DetNet services";
list service-list {
key "name";
description
"list of the DetNet configurations";
leaf name {
type string;
description
"The name to identify the DetNet configuration";
}
leaf service-id {
type uint16;
config false;
description
"The DetNet service ID";
}
leaf service-rank {
type uint8;
description
"The DetNet rank for this service";
}
container outbound{
leaf-list forward-sublayer-output {
type fwd-sub-layer-output-ref;
config false;
}
uses service-group;
list application-input {
key "name";
description
"list of the DetNet applications";
leaf name {
type application-ref;
description
"List of input applications";
}
uses ip-mpls-service;
}
list prev-relay-services {
key "name";
description
"list of the DetNet applications";
leaf name {
type service-ref;
description
"List of input applications";
}
uses ip-mpls-service;
}
uses traffic-requirements;
uses traffic-specification;
}
container inbound{
leaf-list forward-sublayer-input {
type fwd-sub-layer-input-ref;
config false;
description
"List of input forwarding sub-layer interfaces";
}
uses service-group;
list application-output {
key "name";
description "";
leaf name {
type application-ref;
//config false;
description
"List of input applications";
}
uses ip-mpls-service;
}
list next-relay-services {
key "name";
description "The Next service";
leaf name {
type service-ref;
description "Binding to another service";
}
uses ip-mpls-service;
}
}
} // End of service-list
} // End of services
list fwd-sub-layer-input {
key "name";
description
"Incoming DetNet member flows or a compound flow
for receiving a packet from a port";
leaf name {
type string;
description
"Incoming DetNet sub-layer name";
}
leaf-list incoming-interface {
type if:interface-ref;
description
"The name of the interface";
}
choice connectors {
list services {
key "name";
description "Binding to this sub-layer services";
leaf name {
type service-ref;
description "Binding to this sub-layer services";
}
uses ip-mpls-profile;
}
list forwarding-sub-layers {
key "name";
description "Binding to the next forwarding sub-layer ";
leaf name {
type fwd-sub-layer-output-ref;
description "Binding to the next forwarding sub-layer ";
}
uses ip-mpls-profile;
}
}
} //End of sub-layer
list fwd-sub-layer-output {
key "name";
description
"Outgoing DetNet member flows or a compound flow
for sending a packet to a port";
leaf name {
type string;
description
"Outgoing DetNet sub-layer index";
}
container connectors {
leaf-list outbound-service {
type service-ref;
description "Binding to this sub-layer services";
}
leaf-list prev-forward-sub-layer {
type fwd-sub-layer-output-ref;
description "Binding to the next forwarding sub-layer ";
}
}
uses traffic-requirements;
uses traffic-specification;
container next-hop {
description
"IPv4 packet header encapsulation information";
uses next-hop-state-content;
}
} // End of out-segments
} // End of detnet
} // End of ietf-detnet-flow
<CODE ENDS>
The following XML test configuration shows some of the parameters for a DetNet application, service sub-layer and forwarding sub-layer.
The case illustrated is for an ingress IP application to an MPLS service sub-layer and MPLS forwarding sub-layer. In this example a unidirectional flow is configured. The application input traffic is IP. The Service links the application "app1", the service ID, a service label and the outgoing forwarding sublayer "fsl1". The service label is from the remote end serice for the unidirectional path.
<dn:detnet
xmlns:dn="urn:ietf:params:xml:ns:yang:ietf-detnet-configa"
xmlns:in="urn:ietf:params:xml:ns:yang:ietf-inet-types"
xmlns:rt="urn:ietf:params:xml:ns:yang:ietf-routing-types"
xmlns:if="urn:ietf:params:xml:ns:yang:ietf-interfaces"
xmlns:r="urn:ietf:params:xml:ns:yang:ietf-routing"
xmlns:mpls="urn:ietf:params:xml:ns:yang:ietf-mpls"
xmlns:pf="urn:ietf:params:xml:ns:yang:ietf-packet-fields">
<dn:applications>
<dn:app-list>
<dn:name>app1</dn:name>
<dn:app-flow-bidir-congruent>false</dn:app-flow-bidir-congruent>
</dn:app-list>
<dn:app-ingress>
<dn:name>port1</dn:name>
<if:incoming-interface>eth0</if:incoming-interface>
<dn:ip>
<dn:source>1.1.1.1/32</dn:source>
<dn:destination>2.2.2.2/32</dn:destination>
<dn:protocol-next>6</dn:protocol-next>
<dn:dscp>40</dn:dscp>
</dn:ip>
</dn:app-ingress>
</dn:applications>
<dn:services>
<dn:service-list>
<dn:name>ssl1</dn:name>
<dn:service-rank>10</dn:service-rank>
<dn:outbound>
<dn:forward-sublayer-output>fsl1</dn:forward-sublayer-output>
<dn:sequence_number_length>0</dn:sequence_number_length>
<dn:application-input>
<dn:name>app1</dn:name>
<dn:mpls-service-label>55555</dn:mpls-service-label>
</dn:application-input>
<dn:traffic-requirements>
<dn:min-bandwidth>100000000 </dn:min-bandwidth>
<dn:max-latency>10000000</dn:max-latency>
<dn:max-latency-variation>2000000</dn:max-latency-variation>
<dn:max-loss>2</dn:max-loss>
<dn:max-consecutive-loss-tolerance>5
</dn:max-consecutive-loss-tolerance>
<dn:max-misordering>0</dn:max-misordering>
</dn:traffic-requirements>
<dn:traffic-specification>
<dn:interval>5</dn:interval>
<dn:max-packets-per-interval>10</dn:max-packets-per-interval>
<dn:max-payload-size>1500</dn:max-payload-size>
</dn:traffic-specification>
</dn:outbound>
</dn:service-list>
</dn:services>
<dn:fwd-sub-layer-output>
<dn:name>fsl1</dn:name>
<dn:next-hop>
<dn:next-hop>
<dn:hop-index>1</dn:hop-index>
<if:outgoing-interface>eth1</if:outgoing-interface>
<dn:mpls-label-stack>
<dn:entry>
<dn:id>1</dn:id>
<dn:label>42</dn:label>
<dn:traffic-class>5</dn:traffic-class>
</dn:entry>
</dn:mpls-label-stack>
</dn:next-hop>
</dn:next-hop>
</dn:fwd-sub-layer-output>
</dn:detnet>
The next case illustrated is for an egress IP application from an MPLS service sub-layer and MPLS forwarding sub-layer. In this example a unidirectional flow is configured. The application egress traffic is IP. The Service links the application "app2", the service ID, a service label and the outgoing forwarding sub-layer "fsl2". Again the service label is relevant to this egress service. The forwarding sub-layer has an mpls stack that it removes. The next label can be looked up because the forwarding sub-layer has a reference to any DetNet services and those services have registered the service label such that forwarding layer can forward to the respective service sub-layer. Since the service sub-layer label is unique to "app1" the service layer can forward the flow to the correct app1. While not illustrated a single service can associated multiple applications with a unique service label.
<dn:detnet
xmlns:dn="urn:ietf:params:xml:ns:yang:ietf-detnet-configa"
xmlns:in="urn:ietf:params:xml:ns:yang:ietf-inet-types"
xmlns:rt="urn:ietf:params:xml:ns:yang:ietf-routing-types"
xmlns:if="urn:ietf:params:xml:ns:yang:ietf-interfaces"
xmlns:r="urn:ietf:params:xml:ns:yang:ietf-routing"
xmlns:mpls="urn:ietf:params:xml:ns:yang:ietf-mpls"
xmlns:pf="urn:ietf:params:xml:ns:yang:ietf-packet-fields">
<dn:applications>
<dn:app-list>
<dn:name>app2</dn:name>
<dn:app-flow-bidir-congruent>false</dn:app-flow-bidir-congruent>
</dn:app-list>
<dn:app-egress>
<dn:name>port1</dn:name>
<dn:ip-mpls>
<dn:next-hop>
<dn:hop-index> </dn:hop-index>
<if:outgoing-interface>eth0</if:outgoing-interface>
</dn:next-hop>
</dn:ip-mpls>
</dn:app-egress>
</dn:applications>
<dn:services>
<dn:service-list>
<dn:name>ssl2</dn:name>
<dn:service-rank>10</dn:service-rank>
<dn:inbound>
<dn:forward-sublayer-input>fsl2</dn:forward-sublayer-input>
<dn:sequence_number_length>0</dn:sequence_number_length>
<dn:application-output>
<dn:name>app1</dn:name>
<dn:mpls-service-label>55555</dn:mpls-service-label>
</dn:application-output>
</dn:inbound>
</dn:service-list>
</dn:services>
<dn:fwd-sub-layer-input>
<dn:name>fsl2</dn:name>
<if:incomming-interface>eth1</if:incomming-interface>
<dn:service-sub-layer>
<dn:name>ssl2</dn:name>
</dn:service-sub-layer>
<dn:mpls>
<dn:interface>
<dn:mpls-label-stack>
<dn:entry>
<dn:id>1</dn:id>
<dn:label>42</dn:label>
<dn:traffic-class>5</dn:traffic-class>
</dn:entry>
</dn:mpls-label-stack>
</dn:interface>
</dn:mpls>
</dn:fwd-sub-layer-input>
</dn:detnet>
There are some open issues that are still under discussion:
These issues will be resolved in the following versions of the draft.
This document makes no request of IANA.
Note to RFC Editor: this section may be removed on publication as an RFC.
<TBD>
| [I-D.finn-detnet-bounded-latency] | Finn, N., Boudec, J., Mohammadpour, E., Zhang, J., Varga, B. and J. Farkas, "DetNet Bounded Latency", Internet-Draft draft-finn-detnet-bounded-latency-04, June 2019. |
| [I-D.ietf-detnet-flow-information-model] | Varga, B., Farkas, J., Cummings, R., Jiang, Y. and D. Fedyk, "DetNet Flow Information Model", Internet-Draft draft-ietf-detnet-flow-information-model-10, May 2020. |
| [I-D.ietf-detnet-ip] | Varga, B., Farkas, J., Berger, L., Fedyk, D. and S. Bryant, "DetNet Data Plane: IP", Internet-Draft draft-ietf-detnet-ip-06, April 2020. |
| [I-D.ietf-detnet-mpls] | Varga, B., Farkas, J., Berger, L., Malis, A., Bryant, S. and J. Korhonen, "DetNet Data Plane: MPLS", Internet-Draft draft-ietf-detnet-mpls-07, June 2020. |
| [I-D.ietf-detnet-topology-yang] | Geng, X., Chen, M., Li, Z. and R. Rahman, "Deterministic Networking (DetNet) Topology YANG Model", Internet-Draft draft-ietf-detnet-topology-yang-00, 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. |
| [RFC6991] | Schoenwaelder, J., "Common YANG Data Types", RFC 6991, DOI 10.17487/RFC6991, July 2013. |
| [RFC7950] | Bjorklund, M., "The YANG 1.1 Data Modeling Language", RFC 7950, DOI 10.17487/RFC7950, August 2016. |
| [RFC8655] | Finn, N., Thubert, P., Varga, B. and J. Farkas, "Deterministic Networking Architecture", RFC 8655, DOI 10.17487/RFC8655, October 2019. |