Deterministic Networking (DetNet) Configuration YANG Model
draft-ietf-detnet-yang-03
The information below is for an old version of the document.
| Document | Type |
This is an older version of an Internet-Draft whose latest revision state is "Active".
|
|
|---|---|---|---|
| Authors | Xuesong Geng , Mach Chen , Yeoncheol Ryoo , Zhenqiang Li , Reshad Rahman | ||
| Last updated | 2019-07-08 (Latest revision 2019-03-25) | ||
| Replaces | draft-geng-detnet-conf-yang | ||
| RFC stream | Internet Engineering Task Force (IETF) | ||
| Formats | |||
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Ready w/nits
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by Xufeng Liu
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draft-ietf-detnet-yang-03
Network Working Group X. Geng
Internet-Draft M. Chen
Intended status: Standards Track Huawei Technologies
Expires: January 9, 2020 Y. Ryoo
ETRI
Z. Li
China Mobile
R. Rahman
Cisco Systems
July 08, 2019
Deterministic Networking (DetNet) Configuration YANG Model
draft-ietf-detnet-yang-03
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
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 January 9, 2020.
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Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
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.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminologies . . . . . . . . . . . . . . . . . . . . . . . . 3
3. DetNet Configuration Model . . . . . . . . . . . . . . . . . 3
3.1. DetNet Appliction Flow Configuration Attributes . . . . . 3
3.2. DetNet Service Sub-layer Configuration Attributes . . . . 4
3.3. DetNet Forwarding Sub-layer Configuration Attributes . . 4
3.4. DetNet Sub-network Configurations Attributes . . . . . . 5
4. Overview of DetNet YANG Structure . . . . . . . . . . . . . . 5
4.1. DetNet YANG Structure Considerations . . . . . . . . . . 5
4.2. DetNet YANG Structure . . . . . . . . . . . . . . . . . . 6
4.2.1. YANG Structure of Application Flow . . . . . . . . . 6
4.2.2. YANG Structure of DetNet Service Sub-layer . . . . . 6
4.2.3. YANG Structure of DetNet Forwarding Sub-layer . . . . 8
4.2.4. YANG Structure of DetNet sub-network . . . . . . . . 9
5. DetNet Configuration YANG Model . . . . . . . . . . . . . . . 10
6. Open Issues . . . . . . . . . . . . . . . . . . . . . . . . . 34
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 34
8. Security Considerations . . . . . . . . . . . . . . . . . . . 34
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 34
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 34
10.1. Normative References . . . . . . . . . . . . . . . . . . 34
10.2. Informative References . . . . . . . . . . . . . . . . . 35
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 37
1. Introduction
Deterministic Networking (DetNet) [I-D.ietf-detnet-architecture] is
defined to provide high-quality network service with extremely low
packet loss rate, bounded low latency and jitter.
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Information models for DetNet are categorized as flow models, service
models and configuration models, which is defined in
[I-D.ietf-detnet-flow-information-model].
Configuration models are used for DetNet topology discovery and
DetNet flow configuration . This document defines a YANG model for
DetNet flow configurations based on YANG data types and modeling
language defined in [RFC6991] and [RFC7950]. A YANG model for
topology discovery is defined in [I-D.ietf-detnet-topology-yang].
The DetNet configuration YANG model 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.
2. Terminologies
This documents uses the terminologies defined in
[I-D.ietf-detnet-architecture].
3. DetNet Configuration Model
DetNet flow configuration includes DetNet App-flow configuration,
DetNet Service Sub-layer configuration, and DetNet Forwarding Sub-
layer configuration and DetNet sub-network. The corresponding
attributes used in different sub-layers are defined in Section 3.1,
3.2, 3.3, 3.4 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 identify a flow at the User Network Interface (UNI), as
defined in [I-D.ietf-detnet-flow-information-model], the following
flow attributes are introduced:
o DetNet L3 Flow Identification, refers to Section 7.1.1 of
[I-D.ietf-detnet-flow-information-model]
o DetNet L2 Flow Identification, refers to Section 7.1.2 of
[I-D.ietf-detnet-flow-information-model]
Application flow can also do flow filtering and policing at the
ingress to prevent the misbehaviored flows from going into the
network, which needs:
o Traffic Specification, refers to Section 7.2 of
[I-D.ietf-detnet-flow-information-model]
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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, refers to Section 8.1.3 of
[I-D.ietf-detnet-flow-information-model].
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.)
o Flow Rank, refers to Section 8.3 of
[I-D.ietf-detnet-flow-information-model].
o Service Rank, refers to Section 16 of
[I-D.ietf-detnet-flow-information-model].
o Service Sub-layer, refers to Section 4.5 and Section 4.6 of
[I-D.ietf-detnet-mpls]
o Forwarding Sub-layer, refers to Section 4.3 of
[I-D.ietf-detnet-ip] and Section 4.5 and Section 4.6 of
[I-D.ietf-detnet-mpls]
3.3. DetNet Forwarding Sub-layer Configuration Attributes
As defined in [I-D.ietf-detnet-architecture], 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
bandwidth 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
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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.
3.4. DetNet Sub-network Configurations Attributes
TBD
4. Overview of DetNet YANG Structure
4.1. DetNet YANG Structure Considerations
The picture shows that the general structure of the DetNet YANG
Model:
+-----------+
|ietf-detnet|
+-----+-----+
|
+-------------+------+--------+--------------+
| | | |
+-----+-----+ +-----+-----+ +-------+------+ +-----+-----+
| App Flows | |service s-l| |forwarding s-l| |sub-network|
+-----------+ +-----------+ +--------------+ +-----------+
There are four instances in DetNet YANG Model: App-flow instance,
service sub-layer instance, forwarding sub-layer instance and sub-
network 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:
o Name: indicates the key value of the instance identification.
o In-segments: indicates the key value of identification, e.g.,
Layer 2 App flow identification, Layer 3 App flow identification
and DetNet flow identification.
o Out-segments: indicates the information of DetNet processing(e.g.,
DetNet forwarding, DetNet header Encapsulation) and the mapping
relationship to the lower sub-layer/sub-network.
o Operations: indicates DetNet functions, e.g., DetNet forwarding
functions, DetNet Service functions, DetNet Resource Reservation.
These elements are different when the technologies used for the
specific instance is different. So this structure is abstract, which
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allows for different technology specifics as defined in different
data plane drafts.
4.2. DetNet YANG Structure
4.2.1. YANG Structure of Application Flow
The picture below shows that the general YANG structure of DetNet
App-flow:
+--rw app-flow
| +--rw operations
| | +--rw sequence-number
| | +--rw sequence-number-generation-type? sequence-number-generation-type
| | +--rw sequence-number-length? uint8
| +--rw in-segments
| | +--rw app-flow-type? flow-type-ref
| | +--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
| | +--rw src-ipv4-prefix inet:ipv4-prefix
| | +--rw dest-ipv4-prefix inet:ipv4-prefix
| | +--rw protocol uint8
| | +--rw dscp? uint8
| | +--rw dscp-bitmask? uint8
| | +--rw src-ipv6-prefix inet:ipv6-prefix
| | +--rw dest-ipv6-prefix inet:ipv6-prefix
| | +--rw next-header uint8
| | +--rw traffic-class? uint8
| | +--rw traffic-class-bitmask? uint8
| | +--rw flow-label? inet:ipv6-flow-label
| | +--rw flow-label-flag? boolean
| | +--rw lower-source-port? inet:port-number
| | +--rw upper-source-port? inet:port-number
| | +--rw lower-destination-port? inet:port-number
| | +--rw upper-destination-port? inet:port-number
| +--rw out-segments
| +--rw detnet-service-sub-layer? lower-layer-ref
4.2.2. YANG Structure of DetNet Service Sub-layer
The picture shows that the general YANG structure of DetNet Service
Sub-layer:
+--rw service-sub-layer
| +--rw operations
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| | +--rw service-operation
| | | +--rw service-operation-type? service-operation-ref
| | +--rw service-protection
| | +--rw service-protection-type? service-protection-type
| +--rw in-segments
| | +--rw detnet-service-type? flow-type-ref
| | +--rw detnet-service-list* [detnet-service-index]
| | +--rw detnet-service-index uint8
| | +--rw src-ipv4-prefix inet:ipv4-prefix
| | +--rw dest-ipv4-prefix inet:ipv4-prefix
| | +--rw protocol uint8
| | +--rw dscp? uint8
| | +--rw dscp-bitmask? uint8
| | +--rw src-ipv6-prefix inet:ipv6-prefix
| | +--rw dest-ipv6-prefix inet:ipv6-prefix
| | +--rw next-header uint8
| | +--rw traffic-class? uint8
| | +--rw traffic-class-bitmask? uint8
| | +--rw flow-label? inet:ipv6-flow-label
| | +--rw flow-label-flag? boolean
| | +--rw mpls-flow-identification
| | +--rw platform-label-flag? boolean
| | +--rw non-platform-label-space
| | | +--rw incoming-interface? if:interface-ref
| | | +--rw non-platform-label-stack* [index]
| | | +--rw index uint8
| | | +--rw label? rt-type:mpls-label
| | | +--rw tc? uint8
| | +--rw platform-label-space
| | +--rw label? rt-type:mpls-label
| | +--rw tc? uint8
| +--rw out-segments
| +--rw detnet-service-processing-type? flow-type-ref
| +--rw detnet-service-encapsulation
| +--rw detnet-service-processing-list* [detnet-service-processing-index]
| +--rw detnet-service-processing-index uint32
| +--rw ip-flow
| | +--rw ipv4-flow
| | | +--rw src-ipv4-address inet:ipv4-address
| | | +--rw dest-ipv4-address inet:ipv4-address
| | | +--rw protocol uint8
| | | +--rw dscp? uint8
| | +--rw ipv6-flow
| | | +--rw src-ipv6-address inet:ipv6-address
| | | +--rw dest-ipv6-address inet:ipv6-address
| | | +--rw next-header uint8
| | | +--rw traffic-class? uint8
| | | +--rw flow-label? inet:ipv6-flow-label
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| | +--rw l4-port-header
| | +--rw source-port? inet:port-number
| | +--rw destination-port? inet:port-number
| +--rw mpls-flow
| | +--rw detnet-mpls-label-stack* [index]
| | +--rw index uint8
| | +--rw label? rt-type:mpls-label
| | +--rw tc? uint8
| | +--rw s-bit? boolean
| | +--rw d-cw-encapsulate-flag? boolean
| +--rw detnet-forwarding-sub-layer-info
| +--rw detnet-forwarding-sub-layer? lower-layer-ref
4.2.3. YANG Structure of DetNet Forwarding Sub-layer
The picture shows that the general YANG structure of DetNet
Forwarding Sub-layer:
+--rw forwarding-sub-layer
| +--rw operations
| | +--rw forwarding-operation
| | | +--rw forwarding-operation-type? forwarding-operation-ref
| | +--rw resource-allocate
| | | +--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 qos
| +--rw in-segments
| | +--rw detnet-forwarding-type? flow-type-ref
| | +--rw src-ipv4-prefix inet:ipv4-prefix
| | +--rw dest-ipv4-prefix inet:ipv4-prefix
| | +--rw protocol uint8
| | +--rw dscp? uint8
| | +--rw dscp-bitmask? uint8
| | +--rw src-ipv6-prefix inet:ipv6-prefix
| | +--rw dest-ipv6-prefix inet:ipv6-prefix
| | +--rw next-header uint8
| | +--rw traffic-class? uint8
| | +--rw traffic-class-bitmask? uint8
| | +--rw flow-label? inet:ipv6-flow-label
| | +--rw flow-label-flag? boolean
| | +--rw mpls-flow-identification
| | +--rw platform-label-flag? boolean
| | +--rw non-platform-label-space
| | | +--rw incoming-interface? if:interface-ref
| | | +--rw non-platform-label-stack* [index]
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| | | +--rw index uint8
| | | +--rw label? rt-type:mpls-label
| | | +--rw tc? uint8
| | +--rw platform-label-space
| | +--rw label? rt-type:mpls-label
| | +--rw tc? uint8
| +--rw out-segments
| +--rw detnet-forwarding-processing-type? flow-type-ref
| +--rw natively-detnet-forwarding
| | +--rw ipv4-flow
| | | +--rw ipv4-next-hop-address? inet:ipv4-address
| | +--rw ipv6-flow
| | +--rw ipv6-next-hop-address? inet:ipv6-address
| +--rw detnet-forwarding-encapsulation
| +--rw ip-flow
| | +--rw ipv4-flow
| | | +--rw src-ipv4-address inet:ipv4-address
| | | +--rw dest-ipv4-address inet:ipv4-address
| | | +--rw protocol uint8
| | | +--rw dscp? uint8
| | +--rw ipv6-flow
| | | +--rw src-ipv6-address inet:ipv6-address
| | | +--rw dest-ipv6-address inet:ipv6-address
| | | +--rw next-header uint8
| | | +--rw traffic-class? uint8
| | | +--rw flow-label? inet:ipv6-flow-label
| | +--rw l4-port-header
| | +--rw source-port? inet:port-number
| | +--rw destination-port? inet:port-number
| +--rw mpls-flow
| | +--rw detnet-mpls-label-stack* [index]
| | +--rw index uint8
| | +--rw label? rt-type:mpls-label
| | +--rw tc? uint8
| | +--rw s-bit? boolean
| | +--rw d-cw-encapsulate-flag? boolean
| +--rw lower-layer-info
| +--rw lower-layer-type? flow-type-ref
| +--rw interface
| | +--rw outgoing-interface? if:interface-ref
| +--rw sub-layer
| +--rw sub-layer? lower-layer-ref
4.2.4. YANG Structure of DetNet sub-network
TBD
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5. DetNet Configuration YANG Model
<CODE BEGINS> file ietf-detnet-config@20190324.yang
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-type";
}
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
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<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 2019-03-24 {
description "initial revision";
reference "RFC XXXX: draft-ietf-detnet-yang-02";
}
identity ttl-action {
description
"Base identity from which all TTL
actions are derived";
}
identity no-action {
base "ttl-action";
description
"Do nothing regarding the TTL";
}
identity copy-to-inner {
base "ttl-action";
description
"Copy the TTL of the outer header
to the inner header";
}
identity decrease-and-copy-to-inner {
base "ttl-action";
description
"Decrease TTL by one and copy the TTL
to the inner header";
}
identity config-type {
description
"Base identity from which all configuration instances are derived";
}
identity App-flow {
base "config-type";
description
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"App-flow configuration";
}
identity service-sub-layer {
base "config-type";
description
"A DetNet MPLS or IP service sub-layer configuration";
}
identity forwarding-sub-layer {
base "config-type";
description
"A DetNet MPLS or IP forwarding sub-layer configuration";
}
identity tsn-sub-network {
base "config-type";
description
"A TSN sub-net configuration";
}
identity flow-type {
description
"Base identity from which all flow type are derived";
}
identity ipv4 {
base "flow-type";
description
"An IPv4 flow";
}
identity ipv6 {
base "flow-type";
description
"An IPv6 flow";
}
identity mpls {
base "flow-type";
description
"An MPLS flow";
}
identity l2 {
base "flow-type";
description
"An MPLS flow";
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}
identity tsn {
base "flow-type";
description
"An MPLS flow";
}
identity service-operation {
description
"Base identity from which all service operation are derived";
}
identity service-initiation {
base "service-operation";
description
"A DetNet service encapsulates";
}
identity service-termination {
base "service-operation";
description
"A DetNet service decapsulates";
}
identity service-relay {
base "service-operation";
description
"A DetNet service swap";
}
identity forwarding-operation {
description
"Base identity from which all data plane operation are derived";
}
identity natively-forward {
base "forwarding-operation";
description
"A packet natively forward to lower-layer";
}
identity impose-and-forward {
base "forwarding-operation";
description
"Impose a header(MPLS/IP) and forward to lower-layer";
}
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identity pop-and-forward {
base "forwarding-operation";
description
"Pop an identified packet header and forward to lower-layer";
}
identity pop-impose-and-forward {
base "forwarding-operation";
description
"Pop an identified packet header, impose a one or more outgoing
header and forward to lower-layer ";
}
identity swap-and-forward {
base "forwarding-operation";
description
"Swap an identified packet header with outgoing header and forward
to lower-layer ";
}
identity pop-and-lookup {
base "forwarding-operation";
description
"Pop an identified packet header and perform a lookup";
}
identity label-space {
description
"Base identity from which all label space are derived";
}
identity platform-label {
base "label-space";
description
"label allocated from the platform label space";
}
identity non-platform-label {
base "label-space";
description
"label allocated from the non-platform label space";
}
typedef ttl-action-definition {
type identityref {
base "ttl-action";
}
description
"TTL action definition";
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}
typedef config-type-ref {
type identityref {
base "config-type";
}
description
"config-type-ref";
}
typedef flow-type-ref {
type identityref {
base "flow-type";
}
description
"flow-type-ref";
}
typedef service-operation-ref{
type identityref {
base "service-operation";
}
description
"service-operation-ref";
}
typedef forwarding-operation-ref {
type identityref {
base "forwarding-operation";
}
description
"forwarding-operation-ref";
}
typedef label-space-ref {
type identityref {
base "label-space";
}
description
"label-space-ref";
}
typedef lower-layer-ref {
type leafref {
path "/ietf-detnet:detnet-config/ietf-detnet:detnet-config-list"
+ "/ietf-detnet:name";
}
description
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"lower-layer-ref";
}
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";
}
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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";
}
}
description
"service-protection-type";
}
typedef sequence-number-generation-type {
type enumeration {
enum none {
description
"No sequence number generation function provide";
}
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";
}
}
description
"sequence-number-generation-type";
}
grouping l4-port-header {
description
"The TCP/UDP port(source/destination) information";
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 ipv4-header {
description
"The IPv4 packet header information";
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leaf src-ipv4-address {
type inet:ipv4-address;
mandatory true;
description
"The source IP address of the header";
}
leaf dest-ipv4-address {
type inet:ipv4-address;
mandatory true;
description
"The destination IP address of the header";
}
leaf protocol {
type uint8;
mandatory true;
description
"The protocol of the header";
}
leaf dscp {
type uint8;
description
"The DSCP field of the header";
}
}
grouping ipv6-header {
description
"The IPv6 packet header information";
leaf src-ipv6-address {
type inet:ipv6-address;
mandatory true;
description
"The source IP address of the header";
}
leaf dest-ipv6-address {
type inet:ipv6-address;
mandatory true;
description
"The destination IP address of the header";
}
leaf next-header {
type uint8;
mandatory true;
description
"The next header of the IPv6 header";
}
leaf traffic-class {
type uint8;
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description
"The traffic class value of the header";
}
leaf flow-label {
type inet:ipv6-flow-label;
description
"The flow label value of the header";
}
}
grouping mpls-header {
description
"The MPLS packet header information";
leaf label {
type rt-type:mpls-label;
description
"The label value of the MPLS header";
}
leaf tc {
type uint8;
description
"The traffic class value of the MPLS header";
}
leaf s-bit {
type boolean;
description
"The s-bit value of the MPLS header,
which indicates the bottom of the label shack";
}
leaf d-cw-encapsulate-flag {
type boolean;
description
"the indication of whether D-CW is encapsulated or not,
when the D-CW is encapsulated, the sequence number is
determined by sequence generation type";
}
}
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;
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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 l4-port-identification {
description
"The TCP/UDP port(source/destination) identification information";
leaf lower-source-port {
type inet:port-number;
description
"The lower source port number of the source port range";
}
leaf upper-source-port {
type inet:port-number;
description
"The upper source port number of the source port range";
}
leaf lower-destination-port {
type inet:port-number;
description
"The lower destination port number or the destination port range";
}
leaf upper-destination-port {
type inet:port-number;
description
"The upper destination port number of the destination port range";
}
}
grouping ipv4-flow-identification {
description
"The IPv4 packet header identification information";
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leaf src-ipv4-prefix {
type inet:ipv4-prefix;
mandatory true;
description
"The source IP address of the header";
}
leaf dest-ipv4-prefix {
type inet:ipv4-prefix;
mandatory true;
description
"The destination IP address of the header";
}
leaf protocol {
type uint8;
mandatory true;
description
"The protocol of the header";
}
leaf dscp {
type uint8;
description
"The DSCP field of the header";
}
leaf dscp-bitmask {
type uint8;
description
"The bitmask value that determines whether to use
the DSCP(IPv4) value for flow identification or not";
}
}
grouping ipv6-flow-identification {
description
"The IPv6 packet header identification information";
leaf src-ipv6-prefix {
type inet:ipv6-prefix;
mandatory true;
description
"The source IP address of the header";
}
leaf dest-ipv6-prefix {
type inet:ipv6-prefix;
mandatory true;
description
"The destination IP address of the header";
}
leaf next-header {
type uint8;
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mandatory true;
description
"The next header of the IPv6 header";
}
leaf traffic-class {
type uint8;
description
"The traffic class value of the header";
}
leaf traffic-class-bitmask {
type uint8;
description
"The bitmask value that determines whether to use
the Traffic class(IPv6) value for flow identification or not";
}
leaf flow-label {
type inet:ipv6-flow-label;
description
"The flow label value of the header";
}
leaf flow-label-flag {
type boolean;
description
"The flag that determines whether to use
the Flow Label value for flow identification or not";
}
}
grouping mpls-flow-identification {
description
"The MPLS packet header identification information";
leaf label {
type rt-type:mpls-label;
description
"The label value of the MPLS header";
}
leaf tc {
type uint8;
description
"The traffic class value of the MPLS header";
}
}
grouping l2-flow-identification {
description
"The Ethernet or TSN packet header identification information";
leaf source-mac-address {
type yang:mac-address;
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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 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{
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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.";
}
}
container detnet-config {
description
"DetNet configurations";
leaf node-id {
type yang:dotted-quad;
description
"A 32-bit number in the form of a dotted quad that is used by
identifying a DetNet node";
}
list detnet-config-list {
key "name";
description
"list of the DetNet configurations";
leaf name {
type string;
description
"The name to identify the DetNet configuration";
}
leaf config-type {
type config-type-ref;
description
"The DetNet configuration type such as a App-flow, service
sub-layer, forwarding sub-layer, and TSN sub-network";
}
container App-flow {
when "../config-type = 'ietf-detnet:App-flow'";
description
"The DetNet App-flow configuration";
container operations {
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description "operations";
container sequence-number {
description "The DetNet sequence number operations grouping";
leaf sequence-number-generation-type {
type sequence-number-generation-type;
description "The DetNet sequence number generation type";
}
leaf sequence-number-length {
type uint8;
description
"The DetNet sequence number length";
}
}
}
container in-segments {
description "The App-flow identification information";
leaf app-flow-type {
type flow-type-ref;
description
"The App-flow type such as a L2, IPv4, and IPv6";
}
uses l2-flow-identification {
when "app-flow-type = 'ietf-detnet:tsn' or 'ietf-detnet:l2'";
}
uses ipv4-flow-identification {
when "app-flow-type = 'ietf-detnet:ipv4'";
}
uses ipv6-flow-identification {
when "app-flow-type = 'ietf-detnet:ipv6'";
}
uses l4-port-identification {
when "app-flow-type = 'ietf-detnet:ipv6' or 'ietf-detnet:ipv4'";
or 'ietf-detnet:ipv4'";
}
}
container out-segments {
description
"The DetNet service information associated with this App-flow";
leaf detnet-service-sub-layer {
type lower-layer-ref;
description "Specify associated service sub-layer";
}
}
}
container service-sub-layer {
when "../config-type = 'ietf-detnet:service-sub-layer'";
description "The DetNet service sub-layer configuration";
container operations {
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description
"The DetNet service sub-layer operations grouping";
container service-operation {
description "The DetNet service operations grouping";
leaf service-operation-type {
type service-operation-ref;
description
"The DetNet service operations type such as DetNet
service initiation, termination, and relay";
}
}
container service-protection {
description
"The DetNet service protection operations grouping";
leaf service-protection-type {
type service-protection-type;
description
"The DetNet service protection type such as PRF, PEF, PEOF,
PERF, and PEORF";
}
}
}
container in-segments {
when "../operations/service-operation"
+ "/service-operation-type != 'service-initation'";
description
"DetNet service identification information";
leaf detnet-service-type {
type flow-type-ref;
description
"incoming DetNet service flow type";
}
list detnet-service-list {
key "detnet-service-index";
description
"Incoming DetNet member flows or a compound flow";
leaf detnet-service-index {
type uint8;
description
"Incoming DetNet service index";
}
uses ipv4-flow-identification {
when "../detnet-service-type = 'ietf-detnet:ipv4'";
}
uses ipv6-flow-identification {
when "../detnet-service-type = 'ietf-detnet:ipv6'";
}
container mpls-flow-identification {
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when "../../detnet-service-type = 'ietf-detnet:mpls'";
description
"MPLS type DetNet service identification";
leaf label-space {
type label-space-ref;
description
"Indicate the incoming MPLS label is associated with
platform label space or not";
}
container non-platform-label-space {
when "../label-space = 'ietf-detnet:non-platform-label'";
description
"MPLS label is associated with non-platform label space,
all of the F-labels and incoming interface information was
used for identification";
leaf incoming-interface {
type if:interface-ref;
description
"DetNet service incoming interface information";
}
list non-platform-label-stack {
key "index";
description
"All of the label information from the outer label
to the current label";
leaf index {
type uint8;
description
"Index of the labels stack";
}
uses mpls-flow-identification;
}
}
container platform-label-space {
when "../label-space = 'ietf-detnet:platform-label'";
description
"MPLS label is associated with platform label space, only
the F-label is used for identification";
uses mpls-flow-identification;
}
}
}
}
container out-segments {
when "../operations/service-operation"
+ "/service-operation-type != 'service-termination'";
description
"DetNet Service outgoing processing grouping";
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leaf detnet-service-processing-type {
type flow-type-ref;
description
"Outgoing DetNet service flow type";
}
container detnet-service-encapsulation {
description
"DetNet service encapsulation information";
list detnet-service-processing-list {
key "detnet-service-processing-index";
description
"The list of single or multiple outgoing DetNet service(s)";
leaf detnet-service-processing-index {
type uint32;
description "Outgoing segment entry";
}
container ip-flow {
when "../../../detnet-service-processing-type ="
+ "'ietf-detnet:ipv4' or 'ietf-detnet:ipv6'";
description
"IP type DetNet flow(s) encapsulation information";
container ipv4-flow {
when "../../../../detnet-service-processing-type ="
+ "'ietf-detnet:ipv4'";
description
"IPv4 packet header encapsulation information";
uses ipv4-header;
}
container ipv6-flow {
when "../../../../detnet-service-processing-type ="
+ "'ietf-detnet:ipv6'";
description
"IPv6 packet header encapsulation information";
uses ipv6-header;
}
container l4-port-header {
description
"TCP/UDP source or destination port number";
uses l4-port-header;
}
}
container mpls-flow {
when "../../../detnet-service-processing-type ="
+ "'ietf-detnet:mpls'";
description
"MPLS type DetNet flow(s) encapsulation information";
list detnet-mpls-label-stack {
key "index";
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description
"The list of MPLS labels stack for swap or encapsulation";
leaf index {
type uint8;
description "Index of the labels stack";
}
uses mpls-header;
}
}
container detnet-forwarding-sub-layer-info {
description
"The forwarding sub-layer information that associated with
this DetNet service sub-layer";
leaf detnet-forwarding-sub-layer {
type lower-layer-ref;
description
"Specify associated forwarding sub-layer";
}
}
}
}
}
}
container forwarding-sub-layer {
when "../config-type = 'ietf-detnet:forwarding-sub-layer'";
description
"The DetNet forwarding sub-layer configuration";
container operations {
description
"The DetNet forwarding sub-layer operations grouping";
container forwarding-operation {
description
"DetNet forwarding function operations grouping";
leaf forwarding-operation-type {
type forwarding-operation-ref;
description
"DetNet forwarding operation type such as
natively forward, impose and forward, pop and forward,
pop and impose and forward, swap and forward,
and pop and lookup";
}
}
container resource-allocate {
description
"resource-allocation function operations grouping";
uses traffic-specification;
}
container qos {
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description
"QoS function operations grouping";
}
}
container in-segments {
description
"DetNet forwarding sub-layer packet identification information";
leaf detnet-forwarding-type {
type flow-type-ref;
description
"incoming DetNet forwarding packet type";
}
uses ipv4-flow-identification {
when "detnet-forwardinge-type = 'ietf-detnet:ipv4'";
}
uses ipv6-flow-identification {
when "detnet-forwarding-type = 'ietf-detnet:ipv6'";
}
container mpls-flow-identification {
when "../detnet-forwarding-type = 'ietf-detnet:mpls'";
description
"MPLS type identification information";
leaf label-space {
type label-space-ref;
description
"Indicate the incoming MPLS label is associated with platform
label space or not";
}
container non-platform-label-space {
when "../label-space = 'ietf-detnet:non-platform-label'";
description
"MPLS label is associated with non-platform label space,
all of the F-labels and incoming interface information was
used for identification";
leaf incoming-interface {
type if:interface-ref;
description
"The information of DetNet forwarding packet incoming
interface";
}
list non-platform-label-stack {
key "index";
description
"All of the label information from the outer label to
the current label";
leaf index {
type uint8;
description
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"index number 0 indicate last inner label";
}
uses mpls-flow-identification;
}
}
container platform-label-space {
when "../label-space = 'ietf-detnet:platform-label'";
description
"MPLS label is associated with platform label space, only
the F-label is used for identification";
uses mpls-flow-identification;
}
}
}
container out-segments {
description
"DetNet forwarding sub-layer packet processing information";
leaf detnet-forwarding-processing-type {
type flow-type-ref;
description
"outgoing DetNet forwarding packet type";
}
container natively-detnet-forwarding {
when "../../operations/forwarding-operation"
+ " /forwarding-operation-type = 'natively-forwarding'";
description
"Packet forwarding processing information";
container ipv4-flow {
when "../../detnet-forwarding-processing-type ="
+ "'ietf-detnet:ipv4'";
description
"IPv4 type packet forwarding information";
leaf ipv4-next-hop-address {
type inet:ipv4-address;
description
"IPv4 type Next hop IP address";
}
}
container ipv6-flow {
when "../../detnet-forwarding-processing-type ="
+ "'ietf-detnet:ipv6'";
description
"IPv6 type packet forwarding information";
leaf ipv6-next-hop-address {
type inet:ipv6-address;
description
"IPv6 type Next hop IP address";
}
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}
}
container detnet-forwarding-encapsulation {
when "../../operations/forwarding-operation"
+ "/forwarding-operation-type != 'natively-forward'";
description
"Packet encapsulation information";
container ip-flow {
when "../../detnet-forwarding-processing-type = "
+ "'ietf-detnet:ipv4' or 'ietf-detnet:ipv6'";
description
"The IP type DetNet flow(s) encapsulation information";
container ipv4-flow {
when "../../../detnet-forwarding-processing-type = "
+ "'ietf-detnet:ipv4'";
description
"IPv4 packet header encapsulation information";
uses ipv4-header;
}
container ipv6-flow {
when "../../../detnet-forwarding-processing-type = "
+ "'ietf-detnet:ipv6'";
description
"IPv6 packet header encapsulation information";
uses ipv6-header;
}
container l4-port-header {
description
"TCP/UDP source or destination port number";
uses l4-port-header;
}
}
container mpls-flow {
when "../../detnet-forwarding-processing-type = "
+ "'ietf-detnet:mpls'";
description
"MPLS label encapsulation information";
list detnet-mpls-label-stack {
key "index";
description
"The list of MPLS labels stack for swap or encapsulation";
leaf index {
type uint8;
description
"Index of the labels stack";
}
uses mpls-header;
}
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}
container lower-layer-info {
description
"The lower-layer information associated with
this forwarding sub-layer";
leaf lower-layer-type {
type flow-type-ref;
description
"indicate lower-layer type";
}
container interface {
when "../lower-layer-type = 'ietf-detnet:l2'";
description
"indicate the lower-layer is the outgoing interface";
leaf outgoing-interface {
type if:interface-ref;
description
"Outgoing interface";
}
}
container sub-layer {
when "../lower-layer-type != 'ietf-detnet:l2'";
description
"indicate the lower-layer is some of the DetNet sub-layer
or TSN sub-network";
leaf sub-layer {
type lower-layer-ref;
description
"Specify associated DetNet sub-layer or TSN sub-network";
}
}
}
}
}
}
container sub-network {
when "../config-type = 'ietf-detnet:tsn-sub-network'";
description
"sub-network";
}
}
}
}
<CODE ENDS>
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6. Open Issues
There are some open issues that are still under discussion:
o The Relationship with 802.1 TSN YANG models is TBD. TSN YANG
models include: P802.1Qcw, which defines TSN YANG for Qbv, Qbu,
and Qci, and P802.1CBcv, which defines YANG for 802.1CB. The
possible problem here is how to avoid possible overlap among yang
models defined in IETF and IEEE. A common YANG model may be
defined in the future to shared by both TSN and DetNet. More
discussion are needed here.
o How to support DetNet OAM is TBD.
These issues will be resolved in the following versions of the draft.
7. IANA Considerations
This document makes no request of IANA.
Note to RFC Editor: this section may be removed on publication as an
RFC.
8. Security Considerations
<TBD>
9. Acknowledgements
10. References
10.1. 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-architecture]
Finn, N., Thubert, P., Varga, B., and J. Farkas,
"Deterministic Networking Architecture", draft-ietf-
detnet-architecture-13 (work in progress), May 2019.
[I-D.ietf-detnet-flow-information-model]
Farkas, J., Varga, B., Cummings, R., and Y. Jiang, "DetNet
Flow Information Model", draft-ietf-detnet-flow-
information-model-03 (work in progress), March 2019.
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[I-D.ietf-detnet-ip]
Varga, B., Farkas, J., Berger, L., Fedyk, D., Malis, A.,
Bryant, S., and J. Korhonen, "DetNet Data Plane: IP",
draft-ietf-detnet-ip-01 (work in progress), July 2019.
[I-D.ietf-detnet-mpls]
Varga, B., Farkas, J., Berger, L., Fedyk, D., Malis, A.,
Bryant, S., and J. Korhonen, "DetNet Data Plane: MPLS",
draft-ietf-detnet-mpls-00 (work in progress), May 2019.
[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>.
10.2. Informative References
[I-D.geng-detnet-info-distribution]
Geng, X., Chen, M., and Z. Li, "IGP-TE Extensions for
DetNet Information Distribution", draft-geng-detnet-info-
distribution-03 (work in progress), October 2018.
[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-21 (work in
progress), April 2019.
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[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]
Varga, B. and J. Farkas, "DetNet Service Model", draft-
varga-detnet-service-model-02 (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.
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[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>.
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
Zhenqiang Li
China Mobile
Email: lizhenqiang@chinamobile.com
Geng, et al. Expires January 9, 2020 [Page 37]
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Reshad Rahman
Cisco Systems
Email: rrahman@cisco.com
Geng, et al. Expires January 9, 2020 [Page 38]