A YANG Data Model for Layer 1 Types
draft-ietf-ccamp-layer1-types-10
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Haomian Zheng
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Italo Busi
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2021-02-22
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CCAMP Working Group H. Zheng
Internet-Draft I. Busi
Intended status: Standards Track Huawei Technologies
Expires: August 26, 2021 February 22, 2021
A YANG Data Model for Layer 1 Types
draft-ietf-ccamp-layer1-types-10
Abstract
This document defines a collection of common data types and groupings
in the YANG data modeling language for use with layer 1 networks.
These derived common types and groupings are intended to be imported
by modules that specify OTN networks, such as topology, tunnel,
client signal adaptation and service.
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 August 26, 2021.
Copyright Notice
Copyright (c) 2021 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.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology and Notations . . . . . . . . . . . . . . . . . . 3
3. Prefix in Data Node Names . . . . . . . . . . . . . . . . . . 3
4. Layer 1 Types Overview . . . . . . . . . . . . . . . . . . . 3
4.1. Relationship with other Modules . . . . . . . . . . . . . 3
4.2. Content in Layer 1 Type Module . . . . . . . . . . . . . 3
4.3. OTN Label and Label Range . . . . . . . . . . . . . . . . 6
4.4. ODUflex . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4.1. Resizable ODUflex . . . . . . . . . . . . . . . . . . 10
5. YANG Code for Layer1 Types . . . . . . . . . . . . . . . . . 10
6. Security Considerations . . . . . . . . . . . . . . . . . . . 35
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 35
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 36
9. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 36
10. References . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.1. Normative References . . . . . . . . . . . . . . . . . . 37
10.2. Informative References . . . . . . . . . . . . . . . . . 39
Appendix A. Examples of OTN Label Ranges . . . . . . . . . . . . 40
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 46
1. Introduction
This document specifies common data types for use in YANG [RFC7950]
data models of Layer 1 networks. The derived types and groupings are
types applicable to modeling Traffic Engineering (TE) for Layer 1
networks.
The Optical Transport Networking, a typical Layer 1 network, is
specified in [RFC7062]. The corresponding routing and signaling
protocol are specified in [RFC7138] and [RFC7139]. The types and
groupings defined in this document are consistent to those documents,
and can be imported into other Layer 1 data models, including but not
limited to, [I-D.ietf-ccamp-otn-topo-yang],
[I-D.ietf-ccamp-otn-tunnel-model],
[I-D.ietf-ccamp-client-signal-yang] and [I-D.ietf-ccamp-l1csm-yang].
The data model in this draft only defines groupings, typedef and
identities. There is no configuration or state data as specified in
the Network Management Datastore Architecture [RFC8342]. The
document is consistent with other specifications, including [MEF63]
for Layer 1 service attributes, [ITU-Tg709] and [ITU-Tgsup43] for OTN
data plane definitions.
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2. Terminology and Notations
Refer to [RFC7062] for the key terms used in this document. The
terminology for describing YANG data models can be found in
[RFC7950].
3. Prefix in Data Node Names
In this document, names of data nodes and other data model objects
are prefixed using the standard prefix associated with the
corresponding YANG imported modules.
+-------------+---------------------------+----------------------+
| Prefix | YANG module | Reference |
+-------------+---------------------------+----------------------+
| l1-types | ietf-layer1-types | This Document |
+-------------+---------------------------+----------------------+
4. Layer 1 Types Overview
4.1. Relationship with other Modules
This document defines one YANG module for common Layer 1 types. The
aim is to specify common Layer 1 TE types (i.e. typedef, identity,
grouping) that can be imported by layer 1 specific technology, for
example OTN, in its technology-specific modules, such as topology and
tunnels. It is worth noting that the generic traffic-engineering
(TE) types module is specified in [RFC8776] as ietf-te-types, and
both YANG modules, ietf-te-types and ietf-layer1-types, will need
importing when the OTN is configured. Generic attributes such as te-
bandwidth and te-label, are specified in ietf-te-types in [RFC8776],
while the OTN-specific attributes, such as odu-type, are specified in
ietf-layer1-types in this document.
4.2. Content in Layer 1 Type Module
The module ietf-layer1-types contains the following YANG reusable
types and groupings:
tributary-slot-granularity:
This specifies the granularity of the server layer ODU Link (HO ODUk
or ODUCn) supporting a client layer ODU LSP (LO ODUj or ODUk,
respectively). Three granularities, 1.25G/2.5G/5G, have been
specified.
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odu-type:
This specifies the type of ODUk LSP, including the types specified in
[RFC7139] and [RFC7963].
client-signal:
This specifies the client signal types of OTN networks. The initial
input was the G-PID specified in [RFC7139]. Identities for some of
the categories of client signal types, including ETH, STM-n, OC
[ANSI] and Fiber Channel, have been specified.
otn-label-range-type:
The label range type of OTN is represented in one of two ways,
tributary slots (TS) and tributary port number (TPN), as specified in
[RFC7139]. Two representations are enumerated in the otn-label-
range-type.
otn-link-bandwidth:
This grouping defines the link bandwidth information and could be
used in OTN topology model for link bandwidth representation. All
the bandwidth related sections in generic module, [RFC8776], need to
be augmented with this grouping for the usage of Layer 1. The link
bandwidth is represented by the number of ODUs that can be supported
by the link for each ODU type as follow.
+--:(otn)
+--rw odulist* [odu-type]
+--rw odu-type identityref
+--rw number? uint16
For example, an OTN link with 100G bandwidth can support either
1xODU4, 10xODU2 or 80xODU0.
This grouping is also used to represent the ODUflex resources
available on a link, as described in section Section 4.4.
otn-path-bandwidth:
This grouping defines the path bandwidth information and could be
used in OTN topology model for path bandwidth representation. All
the bandwidth related sections in generic module, [RFC8776], need to
be augmented with this grouping for the usage of Layer 1. This
grouping is also applicable when setting up the OTN tunnel. The path
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bandwidth is usually represented by the type of ODU (e.g., ODU0,
ODU2, ODU4) being setup along the path as follow.
+--:(otn)
+--rw odu-type? identityref
In case of ODUflex paths, more information about the bandwidth of the
ODUflex needs to be provided, as described in section Section 4.4.
otn-label-range-info:
This grouping is used to augment the label-restriction list, defined
in [RFC8776], with OTN technology-specific attributes, as defined in
section Section 4.3.
+--rw range-type? otn-label-range-type
+--rw tsg? identityref
+--rw odu-type-list* identityref
+--rw priority? uint8
otn-label-start-end:
This grouping is used to augment the label-start and label-end
containers within the label-restriction list, defined in [RFC8776],
with OTN technology-specific attributes, as defined in section
Section 4.3.
+--:(otn)
+--rw (range-type)?
+--:(trib-port)
| +--rw otn-tpn? otn-tpn
+--:(trib-slot)
+--rw otn-ts? otn-ts
otn-label-step:
This grouping is used to augment the label-step container within the
label-restriction list, defined in [RFC8776], with OTN technology-
specific attributes, as defined in section Section 4.3.
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+--:(otn)
+--rw (range-type)?
+--:(trib-port)
| +--rw otn-tpn? otn-tpn
+--:(trib-slot)
+--rw otn-ts? otn-ts
otn-label-hop:
This grouping is used to augment the label-hop container, defined in
[RFC8776], with OTN technology-specific attributes, as defined in
section Section 4.3.
+--:(otn)
+--rw otn-tpn? otn-tpn
+--rw tsg? identityref
+--rw ts-list? string
optical-interface-func:
The optical interface function is specified in [MEF63]. Identities
that describe the functionality are specified to encode bits for
transmission and to decode bits upon reception.
4.3. OTN Label and Label Range
As described in [RFC7139], the OTN label usually represents the
Tributary Port Number (TPN) and the related set of Tributary Slots
(TS) assigned to a client layer ODU LSP (LO ODUj or ODUk) on a given
server layer ODU (HO-ODU or ODUCn, respectively) Link (e.g., ODU2 LSP
over ODU3 Link). Some special OTN label values are also defined for
an ODUk LSP being set up over an OTUk Link.
The same OTN label must be assigned to the same ODUk LSP at the two
ends of an OTN Link.
As described in [RFC7139], TPN can be a number from 1 to 4095 and TS
are numbered from 1 to 4095, although the actual maximum values
depend on the type of server layer ODU. For example, a server layer
ODU4 provides 80 time slots (numbered from 1 to 80) and the TPN
values can be any number from 1 to 80.
The OTN Label Range represents the values for the TPN and TS that are
available for ODUk LSPs to be setup over a given OTN Link.
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The OTN Label Range is defined by the label-restriction list, defined
in [RFC8776], which, for OTN, should be augmented using the otn-
label-range-info grouping.
Each entry in the label-restriction list represents either the range
of the available TPN values or the range of the available TS values:
the range-type attribute in the otn-label-range-info grouping defines
the type of range for each entry of the list.
Each entry of the label-restriction list, as defined in [RFC8776],
defines a label-start, a label-end, a label-step and a range-bitmap.
The label-start and label-end definitions for OTN should be augmented
using the otn-label-start-end grouping. The label-step definition
for OTN should be augmented using the otn-label-step grouping. It is
expected that the otn-label-step will always be equal to its default
value (i.e., 1), which is defined in [RFC8776].
As described in [RFC7139], in some cases, the TPN assignment rules
are flexible (e.g., ODU4 Link) while in other cases the TPN
assignment rules are fixed (e.g., ODU1 Link). In the former case,
both TPN and TS ranges are reported, while in the latter case, the
TPN range is not reported which indicates that the TPN shall be set
equal to the TS number assigned to the ODUk LSP.
As described in [RFC7139], in some cases, the TPN assignment rules
depends on the TS Granularity (e.g., ODU2 or ODU3 Links). Different
entries in the label-restriction list will report different TPN
ranges for each TS granularity supported by the link, as indicated by
the tsg attribute in the otn-label-range-info grouping.
As described in [RFC7139], in some cases the TPN ranges are different
for different types of ODUk LSPs. For example, on an ODU2 Link with
1.25G TS granularity, the TPN range is 1-4 for ODU1 but 1-8 for ODU0
and ODUflex. Different entries in the label-restriction list will
report different TPN ranges for different set of ODUk types, as
indicated by the odu-type-list in the otn-label-range-info grouping.
Appendix A provides some examples of how the TPN and TS label ranges
described in Table 3 and Table 4 of [RFC7139] can be represented in
YANG using the groupings defined in this document.
4.4. ODUflex
ODUflex is a type of ODU which has a flexible bit rate which is
configured when setting up an ODUflex LSP.
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[ITU-Tg709], defines six types of ODUflex: ODUflex(CBR),
ODUflex(GFP), ODUflex(GFP,n,k), ODUflex(IMP), ODUflex(IMP,s) and
ODUflex(FlexE-aware).
The main difference between these types of ODUflex is the formula
used to calculate the nominal bit rate of the ODUflex, as described
in Table 7-2 of [ITU-Tg709]. A YANG choice has been defined to
describe these cases:
+--rw (oduflex-type)?
+--:(generic)
| +--rw nominal-bit-rate uint64
+--:(cbr)
| +--rw client-type identityref
+--:(gfp-n-k)
| +--rw gfp-n uint8
| +--rw gfp-k? l1-types:gfp-k
+--:(flexe-client)
| +--rw flexe-client
| l1-types:flexe-client-rate
+--:(flexe-aware)
| +--rw flexe-aware-n uint16
+--:(packet)
+--rw opuflex-payload-rate uint64
The 'generic' case has been added to allow the ODUflex nominal bit
rate to be defined independently from the type of ODUflex. This
could be useful for forward compatibility in the transit domain/nodes
where the setup of ODUflex LSPs does not depend on the ODUflex type.
In order to simplify interoperability the 'generic' case should be
used only when it is needed; the ODUflex type-specific case should be
used whenever possible.
The 'cbr' case is used for Constant Bit Rate (CBR) client signals.
The client-type indicates which CBR client signal is carried by the
ODUflex and, implicitly, the client signal bit rate which is then
used to calculate the ODUflex(CBR) nominal bit rate as described in
Table 7-2 of [ITU-Tg709].
The 'gfp-n-k' case is used for GFP-F mapped client signals based on
ODUk.ts and 'n' 1.25G tributary slots. 'gfp-k' defines the nominal
bit-rate of the ODUk.ts which, together with the value of 'gfp-n', is
used to calculated the ODUflex(GFP,n,k) nominal bit rate as described
in Table 7-8 and Table L-7 of [ITU-Tg709] . With a few exceptions,
shown in Table L-7 of [ITU-Tg709], the nominal bit-rate of the
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ODUk.ts could be inferred from the value of 'n', as shown in
Table 7-8 of [ITU-Tg709] and therefore the 'gfp-k' is optional.
The 'flexe-client' case is used for Idle Mapping Procedure(IMP)
mapped FlexE client signals, The 'flexe-client' represents the type
of FlexE client carried by the ODUflex which implicitly defines the
value of 's' used to calculate the ODUflex(s) nominal bit rate as
described in Table 7-2 of [ITU-Tg709]. The '10G' and '40G'
enumeration values are used for 10G and 40G FlexE clients to
implicitly define the values of s=2 and s=8. For the 'n x 25G' FlexE
Clients the value of 'n' is used to defines the value of s=5 x n.
The 'flexe-aware' case is used for FlexE-aware client signals. The
flexe-aware-n represents the value n (n = n1 + n2 + ... + np) which
is used to calculate the ODUflex(FlexE-aware) nominal bit rate as
described in Table 7-2 of [ITU-Tg709].
The 'packet' case is used for both the GFP-F mapped client signals
and the IMP mapped client signals. The opuflex-payload-rate is
either the GFP-F encapsulated-packet client nominal bit rate or the
64b/66b encoded-packet client nominal bit rate. The calculation of
ODUflex(GFP) nominal bit rate is defined in section 12.2.5 of
[ITU-Tg709], and the calculation of ODUflex(IMP) nominal bit rate is
defined in section 12.2.6 of [ITU-Tg709]. The same formula is used
in both cases.
Section 5.1 and 5.2 of [RFC7139] defines two rules to compute the
number of tributary slots to be allocated to ODUflex(CBR) and
ODUflex(GFP) LSPs when carried over a HO-ODUk link. According to
section 19.6 of [ITU-Tg709], the rules in section 5.2 apply only to
ODUflex(GFP,n,k) while the rules defined in section 5.1 apply to any
other ODUflex type, including, but not limited, to ODUflex(CBR).
Section 20.5 of [ITU-Tg709] defines the rules for computing the
number of tributary slots to be allocated to ODUflex LSPs when
carried over an ODUCn link.
Following the [ITU-Tg709] definitions, the rules defined for
ODUflex(GFP,n,k) are used only when the 'gfp-n-k' case is used. In
all the other cases, including the (generic) case, the rules defined
any other ODUflex type are used.
The number of available ODUs, defined for each ODUk type, including
ODUflex, together with the number of available time-slots, reported
as part of the OTN label range, provide sufficient information to
infer the OTN link bandwidth availability for ODUflex LSPs. This
information is independent of the ODUflex type.
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4.4.1. Resizable ODUflex
Resizable ODUflex is a special type of ODUflex that supports the
procedures defined in [ITU-Tg7044] for hitless resizing of the
ODUflex nominal bit rate.
Two odu-type identities have been defined for ODUflex:
o The ODUflex identity, which is used with any type of non-resizable
ODUflex, as defined in Table 7-2 of [ITU-Tg709].
o The ODUflex-resizable identity, which is used only with resizable
ODUflex(GFP,n,k).
These two identities are used to identify whether an ODUflex(GFP,n,k)
LSP does or does support the [ITU-Tg7044] hitless resizing
procedures. They also identify whether an OTN link only supports the
setup of non-resizable ODUflex LSPs or also supports the setup of
resizable ODUflex(GFP,n,k) LSP but with different capabilities (e.g.,
a lower number of LSPs).
5. YANG Code for Layer1 Types
<CODE BEGINS>file "ietf-layer1-types@2021-02-19.yang"
module ietf-layer1-types {
yang-version 1.1;
namespace "urn:ietf:params:xml:ns:yang:ietf-layer1-types";
prefix "l1-types";
organization
"IETF CCAMP Working Group";
contact
"WG Web: <http://tools.ietf.org/wg/ccamp/>
WG List: <mailto:ccamp@ietf.org>
Editor: Haomian Zheng
<mailto:zhenghaomian@huawei.com>
Editor: Italo Busi
<mailto:Italo.Busi@huawei.com>";
description
"This module defines Layer 1 types. The model fully conforms
to the Network Management Datastore Architecture (NMDA).
Copyright (c) 2021 IETF Trust and the persons
identified as authors of the code. All rights reserved.
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Redistribution and use in source and binary forms, with or
without modification, is permitted pursuant to, and subject
to the license terms contained in, the Simplified BSD License
set forth in Section 4.c of the IETF Trust's Legal Provisions
Relating to IETF Documents
(https://trustee.ietf.org/license-info).
This version of this YANG module is part of RFC XXXX; see
the RFC itself for full legal notices.";
revision "2021-02-19" {
description
"Initial Version";
reference
"RFC XXXX: A YANG Data Model for Layer 1 Types";
// RFC Editor: replace XXXX with actual RFC number, update date
// information and remove this note
}
/*
* Typedefs
*/
typedef otn-tpn {
type uint16 {
range "1..4095";
}
description
"Tributary Port Number for OTN. ";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks.";
}
typedef otn-ts {
type uint16 {
range "1..4095";
}
description
"Tributary Slot for OTN. ";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks.";
}
typedef otn-label-range-type {
type enumeration {
enum trib-slot {
description
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"Defines a range of OTN tributary slots. ";
}
enum trib-port {
description
"Defines a range of OTN tributary ports. ";
}
}
description
"Defines the type of OTN label range: TS or TPN. ";
}
typedef gfp-k {
type enumeration {
enum 2 {
description
"The ODU2.ts rate (1,249,177.230 kbit/s) is used
to compute the rate of an ODUflex(GFP,n,2). ";
}
enum 3 {
description
"The ODU3.ts rate (1,254,470.354 kbit/s) is used
to compute the rate of an ODUflex(GFP,n,3). ";
}
enum 4 {
description
"The ODU4.ts rate (1,301,467.133 kbit/s) is used
to compute the rate of an ODUflex(GFP,n,4). ";
}
}
description
"The ODUk.ts used to compute the rate of an ODUflex(GFP,n,k)";
reference
"ITU-T G.709 v6.0 (06/2020), Table 7-8 and L.7: Interfaces for
the Optical Transport Network (OTN)";
}
typedef flexe-client-rate {
type union {
type uint16;
type enumeration {
enum "10G" {
description
"Represents a 10G FlexE Client signal (s=2)";
}
enum "40G" {
description
"Represents a 40G FlexE Client signal (s=8)";
}
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}
}
description
"The FlexE Client signal rate (s x 5,156,250.000 kbit/s)
used to compute the rate of an ODUflex(IMP, s).
Valid values for s are s=2 (10G), s=4 (40G) and
s=5 x n (n x 25G).
In the first two cases an enumeration value
(either 10G or 40G) is used, while in the latter case
the value of n is used";
reference
"ITU-T G.709 v6.0 (06/2020), Table 7-2: Interfaces for the
Optical Transport Network (OTN)";
}
/*
* Identities
*/
identity tributary-slot-granularity {
description
"Tributary slot granularity";
reference
"ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity tsg-1.25G {
base tributary-slot-granularity;
description
"1.25G tributary slot granularity";
}
identity tsg-2.5G {
base tributary-slot-granularity;
description
"2.5G tributary slot granularity";
}
identity tsg-5G {
base tributary-slot-granularity;
description
"5G tributary slot granularity";
}
identity odu-type {
description
"Base identity from which specific ODU protocol is derived.";
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}
identity ODU0 {
base odu-type;
description
"ODU0 protocol (1.24Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODU1 {
base odu-type;
description
"ODU1 protocol (2.49Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODU1e {
base odu-type;
description
"ODU1e protocol (10.35Gb/s).";
reference
"RFC7963: RSVP-TE Extension for Additional Signal Types in
G.709 Optical Transport Networks (OTNs)
ITU-T G.sup43 v5.0 (02/2011): Transport of IEEE 10GBASE-R
in optical transport networks (OTN)";
}
identity ODU2 {
base odu-type;
description
"ODU2 protocol (10.03Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
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}
identity ODU2e {
base odu-type;
description
"ODU2e protocol (10.39Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODU3 {
base odu-type;
description
"ODU3 protocol (40.31Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODU3e1 {
base odu-type;
description
"ODU3e1 protocol (41.77Gb/s).";
reference
"RFC7963: RSVP-TE Extension for Additional Signal Types in
G.709 Optical Transport Networks (OTNs)
ITU-T G.sup43 v5.0 (02/2011): Transport of IEEE 10GBASE-R
in optical transport networks (OTN)";
}
identity ODU3e2 {
base odu-type;
description
"ODU3e2 protocol (41.78Gb/s).";
reference
"RFC7963: RSVP-TE Extension for Additional Signal Types in
G.709 Optical Transport Networks (OTNs)
ITU-T G.sup43 v5.0 (02/2011): Transport of IEEE 10GBASE-R
in optical transport networks (OTN)";
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}
identity ODU4 {
base odu-type;
description
"ODU4 protocol (104.79Gb/s).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODUflex {
base odu-type;
description
"ODUflex protocol (flexibile bit rate, not resizable).
It could be used for any type of ODUflex, including
ODUflex(CBR), ODUflex(GFP), ODUflex(GFP,n,k), ODUflex(IMP,s),
ODUflex(IMP) and ODUflex(FlexE-aware).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ODUflex-resizable {
base odu-type;
description
"ODUflex protocol (flexibile bit rate, resizable).
It could be used only for ODUflex(GFP,n,k).";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity protocol {
description
"Base identity from which specific protocol is derived.";
reference
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"MEF63: Subscriber Layer 1 Service Attributes";
}
identity Ethernet {
base protocol;
description
"Ethernet protocol.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity Fibre-Channel {
base protocol;
description
"Fibre-Channel (FC) protocol.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity SDH {
base protocol;
description
"SDH protocol.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity SONET {
base protocol;
description
"SONET protocol.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity client-signal {
description
"Base identity from which specific client signal is derived";
}
identity coding-func {
description
"Base identity from which specific coding function
is derived.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
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identity ETH-1Gb {
base client-signal;
description
"Client signal type of 1GbE";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ETH-10Gb-LAN {
base client-signal;
description
"Client signal type of ETH-10Gb-LAN (10.3 Gb/s)";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
IEEE 802.3-2018, Clause 49: IEEE Standard for Ethernet";
}
identity ETH-10Gb-WAN {
base client-signal;
description
"Client signal type of ETH-10Gb-WAN (9.95 Gb/s)";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
IEEE 802.3-2018, Clause 50: IEEE Standard for Ethernet";
}
identity ETH-40Gb {
base client-signal;
description
"Client signal type of 40GbE";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
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ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ETH-100Gb {
base client-signal;
description
"Client signal type of 100GbE";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity STM-1 {
base client-signal;
base coding-func;
description
"Client signal type of STM-1;
STM-1 G.707 (N=1) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity STM-4 {
base client-signal;
base coding-func;
description
"Client signal type of STM-4;
STM-4 G.707 (N=4) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
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identity STM-16 {
base client-signal;
base coding-func;
description
"Client signal type of STM-16;
STM-16 G.707 (N=16) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity STM-64 {
base client-signal;
base coding-func;
description
"Client signal type of STM-64;
STM-64 G.707 (N=64) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity STM-256 {
base client-signal;
base coding-func;
description
"Client signal type of STM-256;
STM-256 G.707 (N=256) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
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identity OC-3 {
base client-signal;
base coding-func;
description
"Client signal type of OC3;
OC-3 GR-253-CORE (N=3) coding function.";
reference
"ANSI T1.105-1995: Synchronous Optical Network (SONET)
Basic Description including Multiplex Structure, Rates,
and Formats
MEF63: Subscriber Layer 1 Service Attributes";
}
identity OC-12 {
base client-signal;
base coding-func;
description
"Client signal type of OC12;
OC-12 GR-253-CORE (N=12) coding function.";
reference
"ANSI T1.105-1995: Synchronous Optical Network (SONET)
Basic Description including Multiplex Structure, Rates,
and Formats
MEF63: Subscriber Layer 1 Service Attributes";
}
identity OC-48 {
base client-signal;
base coding-func;
description
"Client signal type of OC48;
OC-48 GR-253-CORE (N=48) coding function.";
reference
"ANSI T1.105-1995: Synchronous Optical Network (SONET)
Basic Description including Multiplex Structure, Rates,
and Formats
MEF63: Subscriber Layer 1 Service Attributes";
}
identity OC-192 {
base client-signal;
base coding-func;
description
"Client signal type of OC192;
OC-192 GR-253-CORE (N=192) coding function.";
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reference
"ANSI T1.105-1995: Synchronous Optical Network (SONET)
Basic Description including Multiplex Structure, Rates,
and Formats
MEF63: Subscriber Layer 1 Service Attributes";
}
identity OC-768 {
base client-signal;
base coding-func;
description
"Client signal type of OC768;
OC-768 GR-253-CORE (N=768) coding function.";
reference
"ANSI T1.105-1995: Synchronous Optical Network (SONET)
Basic Description including Multiplex Structure, Rates,
and Formats
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-100 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-100;
FC-100 FC-FS-2 (1.0625 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-200 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-200;
FC-200 FC-FS-2 (2.125 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
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ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-400 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-400;
FC-400 FC-FS-2 (4.250 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-800 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-800;
FC-800 FC-FS-2 (8.500 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-1200 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-1200;
FC-1200 FC-10GFC (10.51875 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
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ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-1600 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-1600;
FC-1600 FC-FS-3 (14.025 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FC-3200 {
base client-signal;
base coding-func;
description
"Client signal type of Fibre Channel FC-3200;
FC-3200 FC-FS-4 (28.05 Gb/s) coding function.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)
MEF63: Subscriber Layer 1 Service Attributes";
}
identity FICON-4G {
base client-signal;
description
"Client signal type of Fibre Connection 4G";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
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}
identity FICON-8G {
base client-signal;
description
"Client signal type of Fibre Connection 8G";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks
ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
identity ETH-1000X {
base coding-func;
description
"1000BASE-X PCS clause 36 coding function.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ETH-10GW {
base coding-func;
description
"10GBASE-W (WAN PHY) PCS clause 49 and WIS clause 50
coding function.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ETH-10GR {
base coding-func;
description
"10GBASE-R (LAN PHY) PCS clause 49 coding function.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ETH-40GR {
base coding-func;
description
"40GBASE-R PCS clause 82 coding function.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ETH-100GR {
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base coding-func;
description
"100GBASE-R PCS clause 82 coding function.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity optical-interface-func {
description
"Base identity from which optical-interface-function
is derived.";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity SX-PMD-1000 {
base optical-interface-func;
description
"SX-PMD-clause-38 Optical Interface function for
1000BASE-X PCS-36";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LX-PMD-1000 {
base optical-interface-func;
description
"LX-PMD-clause-38 Optical Interface function for
1000BASE-X PCS-36";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LX10-PMD-1000 {
base optical-interface-func;
description
"LX10-PMD-clause-59 Optical Interface function for
1000BASE-X PCS-36";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity BX10-PMD-1000 {
base optical-interface-func;
description
"BX10-PMD-clause-59 Optical Interface function for
1000BASE-X PCS-36";
reference
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"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LW-PMD-10G {
base optical-interface-func;
description
"LW-PMD-clause-52 Optical Interface function for
10GBASE-W PCS-49-WIS-50";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity EW-PMD-10G {
base optical-interface-func;
description
"EW-PMD-clause-52 Optical Interface function for
10GBASE-W PCS-49-WIS-50";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LR-PMD-10G {
base optical-interface-func;
description
"LR-PMD-clause-52 Optical Interface function for
10GBASE-R PCS-49";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ER-PMD-10G {
base optical-interface-func;
description
"ER-PMD-clause-52 Optical Interface function for
10GBASE-R PCS-49";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LR4-PMD-40G {
base optical-interface-func;
description
"LR4-PMD-clause-87 Optical Interface function for
40GBASE-R PCS-82";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
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identity ER4-PMD-40G {
base optical-interface-func;
description
"ER4-PMD-clause-87 Optical Interface function for
40GBASE-R PCS-82";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity FR-PMD-40G {
base optical-interface-func;
description
"FR-PMD-clause-89 Optical Interface function for
40GBASE-R PCS-82";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity LR4-PMD-100G {
base optical-interface-func;
description
"LR4-PMD-clause-88 Optical Interface function for
100GBASE-R PCS-82";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
identity ER4-PMD-100G {
base optical-interface-func;
description
"ER4-PMD-clause-88 Optical Interface function for
100GBASE-R PCS-82";
reference
"MEF63: Subscriber Layer 1 Service Attributes";
}
/*
* Groupings
*/
grouping otn-link-bandwidth {
description
"Bandwidth attributes for OTN links";
list odulist {
key "odu-type";
description
"OTN bandwidth definition";
leaf odu-type {
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type identityref {
base odu-type;
}
description "ODU type";
}
leaf number {
type uint16;
description "Number of ODUs";
}
}
}
grouping otn-path-bandwidth {
description
"Bandwidth attributes for OTN paths.";
container otn {
description
"Bandwidth attributes for OTN paths.";
leaf odu-type {
type identityref {
base odu-type;
}
description "ODU type";
}
choice oduflex-type {
when 'derived-from-or-self(./odu-type,"ODUflex") or
derived-from-or-self(./odu-type,"ODUflex-resizable")'{
description
"Applicable when odu-type is ODUflex or
ODUflex-resizable";
}
description
"Types of ODUflex used to compute the ODUflex
nominal bit rate.";
reference
"ITU-T G.709 v6.0 (06/2020), Table 7-2: Interfaces for the
Optical Transport Network (OTN)";
case generic {
leaf nominal-bit-rate {
type uint64;
units "bps";
mandatory true;
description
"Nominal ODUflex bit rate.";
}
}
case cbr {
leaf client-type {
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type identityref {
base client-signal;
}
mandatory true;
description
"The CBR client signal for an ODUflex(CBR).";
}
}
case gfp-n-k {
leaf gfp-n {
type uint8 {
range "1..80";
}
mandatory true;
description
"The value of n for an ODUflex(GFP,n,k).";
reference
"ITU-T G.709 v6.0 (06/2020), Tables 7-8 and L.7:
Interfaces for the Optical Transport Network (OTN)";
}
leaf gfp-k {
type gfp-k;
description
"The value of k for an ODUflex(GFP,n,k).
If omitted, it is calculated from the value of gfp-n
as described in Table 7-8 of G.709";
reference
"ITU-T G.709 v6.0 (06/2020), Tables 7-8 and L.7:
Interfaces for the Optical Transport Network (OTN)";
}
}
case flexe-client {
leaf flexe-client {
type flexe-client-rate;
mandatory true;
description
"The rate of the FlexE-client for an ODUflex(IMP,s).";
}
}
case flexe-aware {
leaf flexe-aware-n {
type uint16;
mandatory true;
description
"The rate of FlexE-aware client signal
for ODUflex(FlexE-aware)";
}
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}
case packet {
leaf opuflex-payload-rate {
type uint64;
units "Kbps";
mandatory true;
description
"Either the GFP-F encapsulated packet client nominal
bit rate for an ODUflex(GFP) or the 64b/66b encoded
packet client nominal bit rate for an ODUflex(IMP).";
}
}
}
}
}
grouping otn-label-range-info {
description
"Label range information for OTN.
This grouping should be used together with the
otn-label-start-end and otn-label-step groupings to provide
OTN technology-specific label information to the models which
use the label-restriction-info grouping defined in the module
ietf-te-types.";
leaf range-type {
type otn-label-range-type;
description "The type of range (e.g., TPN or TS)
to which the label range applies";
}
leaf tsg {
type identityref {
base tributary-slot-granularity;
}
description
"Tributary slot granularity (TSG) to which the label range
applies.
This leaf shall be present when the range-type is TS.
This leaf can be omitted when mapping an ODUk over an OTUk
Link. In this case the range-type is tpn, with only one
entry (ODUk), and the tpn range has only one value (1).";
reference
"ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
leaf-list odu-type-list {
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type identityref {
base odu-type;
}
description
"List of ODU types to which the label range applies.
An Empty odu-type-list means that the label range
applies to all the supported ODU types.";
}
leaf priority {
type uint8;
description
"Priority in Interface Switching Capability
Descriptor (ISCD).";
reference
"RFC4203: OSPF Extensions in Support of Generalized
Multi-Protocol Label Switching (GMPLS)";
}
}
grouping otn-label-start-end {
description
"The OTN label-start or label-end used to specify an OTN label
range.
This grouping is dependent on the range-type defined in the
otn-label-range-info grouping.
This grouping should be used together with the
otn-label-range-info and otn-label-step groupings to provide
OTN technology-specific label information to the models which
use the label-restriction-info grouping defined in the module
ietf-te-types.";
choice range-type {
description
"OTN label range type, either TPN range or TS range";
case trib-port {
leaf otn-tpn {
when "../../../range-type = 'trib-port'" {
description
"Valid only when range-type represented by trib-port";
}
type otn-tpn;
description
"Tributary Port Number.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of
Evolving G.709 Optical Transport Networks.";
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}
}
case trib-slot {
leaf otn-ts {
when "../../../range-type = 'trib-slot'" {
description
"Valid only when range-type represented by trib-slot";
}
type otn-ts;
description
"Tributary Slot Number.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of
Evolving G.709 Optical Transport Networks";
}
}
}
}
grouping otn-label-hop {
description "OTN Label";
reference
"RFC7139, section 6: GMPLS Signaling Extensions for Control of
Evolving G.709 Optical Transport Networks";
leaf otn-tpn {
type otn-tpn;
description
"Tributary Port Number.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of Evolving
G.709 Optical Transport Networks.";
}
leaf tsg {
type identityref {
base tributary-slot-granularity;
}
description "Tributary slot granularity.";
reference
"ITU-T G.709 v6.0 (06/2020): Interfaces for the Optical
Transport Network (OTN)";
}
leaf ts-list {
type string {
pattern "([1-9][0-9]{0,3}(-[1-9][0-9]{0,3})?"
+ "(,[1-9][0-9]{0,3}(-[1-9][0-9]{0,3})?)*)";
}
description
"A list of available tributary slots ranging
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between 1 and 4095. If multiple values or
ranges are given, they all must be disjoint
and must be in ascending order.
For example 1-20,25,50-1000.";
reference
"RFC 7139: GMPLS Signaling Extensions for Control
of Evolving G.709 Optical Transport Networks";
}
}
grouping otn-label-step {
description
"Label step for OTN.
This grouping is dependent on the range-type defined in the
otn-label-range-info grouping.
This grouping should be used together with the
otn-label-range-info and otn-label-start-end groupings to
provide OTN technology-specific label information to the models
which use the label-restriction-info grouping defined in the
module ietf-te-types.";
choice range-type {
description
"OTN label range type, either TPN range or TS range";
case trib-port {
leaf otn-tpn {
when "../../range-type = 'trib-port'" {
description
"Valid only when range-type represented by trib-port";
}
type otn-tpn;
description
"Label step which represents possible increments for
Tributary Port Number.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of
Evolving G.709 Optical Transport Networks.";
}
}
case trib-slot {
leaf otn-ts {
when "../../range-type = 'trib-slot'" {
description
"Valid only when range-type represented by trib-slot";
}
type otn-ts;
description
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"Label step which represents possible increments for
Tributary Slot Number.";
reference
"RFC7139: GMPLS Signaling Extensions for Control of
Evolving G.709 Optical Transport Networks.";
}
}
}
}
}
<CODE ENDS>
6. Security Considerations
The YANG module specified in this document defines a schema for data
that is designed to be accessed via network management protocols such
as NETCONF [RFC6241] or RESTCONF [RFC8040]. The lowest NETCONF layer
is the secure transport layer, and the mandatory-to-implement secure
transport is Secure Shell (SSH) [RFC6242]. The lowest RESTCONF layer
is HTTPS, and the mandatory-to-implement secure transport is TLS
[RFC8446].
The NETCONF access control model [RFC8341] provides the means to
restrict access for particular NETCONF or RESTCONF users to a
preconfigured subset of all available NETCONF or RESTCONF protocol
operations and content.
The YANG module in this document defines layer 1 type definitions
(i.e., typedef, identity and grouping statements) in YANG data
modeling language to be imported and used by other layer 1
technology-specific modules. When imported and used, the resultant
schema will have data nodes that can be writable, or readable. The
access to such data nodes may be considered sensitive or vulnerable
in some network environments. Write operations (e.g., edit-config)
to these data nodes without proper protection can have a negative
effect on network operations.
The security considerations spelled out in the YANG 1.1 specification
[RFC7950] apply for this document as well.
7. IANA Considerations
It is proposed that IANA should assign new URIs from the "IETF XML
Registry" [RFC3688] as follows:
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URI: urn:ietf:params:xml:ns:yang:ietf-layer1-types
Registrant Contact: The IESG
XML: N/A; the requested URI is an XML namespace.
This document registers following YANG modules in the YANG Module
Names registry [RFC7950].
name: ietf-layer1-types
namespace: urn:ietf:params:xml:ns:yang:ietf-layer1-types
prefix: l1-types
reference: RFC XXXX
8. Acknowledgements
The authors and the working group give their sincere thanks for
Robert Wilton for the YANG doctor review, and Tom Petch for his
comments during the model and document development.
9. Contributors
Dieter Beller
Nokia
Email: dieter.beller@nokia.com
Sergio Belotti
Nokia
Email: sergio.belotti@nokia.com
Yanlei Zheng
China Unicom
Email: zhengyanlei@chinaunicom.cn
Aihua Guo
Futurewei Technologies
Email: aihuaguo@futurewei.com
Young Lee
Samsung
Email: younglee.tx@gmail.com
Lei Wang
China Mobile
Email: wangleiyj@chinamobile.com
Oscar Gonzalez de Dios
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Telefonica
Email: oscar.gonzalezdedios@telefonica.com
Xufeng Liu
Volta Networks
Email: xufeng.liu.ietf@gmail.com
Yunbin Xu
CAICT
Email: xuyunbin@caict.ac.cn
Anurag Sharma
Google
Email: ansha@google.com
Rajan Rao
Infinera
Email: rrao@infinera.com
Victor Lopez
Telefonica
Email: victor.lopezalvarez@telefonica.com
Yunbo Li
China Mobile
Email: liyunbo@chinamobile.com
10. References
10.1. Normative References
[ANSI] American National Standards Institute, "Synchronous
Optical Network (SONET) Basic Description including
Multiplex Structure, Rates, and Formats", ANSI T1.105,
January 1995.
[IEEE] Institute of Electrical and Electronics Engineers, "IEEE
Standard for Ethernet", IEEE 802.3-2018, June 2018.
[ITU-Tg7044]
International Telecommunication Union, "Hitless adjustment
of ODUflex(GFP)", ITU-T G.7044, October 2011.
[ITU-Tg709]
International Telecommunication Union, "Interfaces for the
optical transport network", ITU-T G.709, June 2020.
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[ITU-Tgsup43]
International Telecommunication Union, "Transport of IEEE
10GBASE-R in optical transport networks (OTN)",
ITU-T G.sup43, November 2011.
[MEF63] Metro Ethernet Forum, "Subscriber Layer1 Service
Attributes Technical Specification", MEF 63, August 2018.
[RFC3688] Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
DOI 10.17487/RFC3688, January 2004,
<https://www.rfc-editor.org/info/rfc3688>.
[RFC4203] Kompella, K., Ed. and Y. Rekhter, Ed., "OSPF Extensions in
Support of Generalized Multi-Protocol Label Switching
(GMPLS)", RFC 4203, DOI 10.17487/RFC4203, October 2005,
<https://www.rfc-editor.org/info/rfc4203>.
[RFC6241] Enns, R., Ed., Bjorklund, M., Ed., Schoenwaelder, J., Ed.,
and A. Bierman, Ed., "Network Configuration Protocol
(NETCONF)", RFC 6241, DOI 10.17487/RFC6241, June 2011,
<https://www.rfc-editor.org/info/rfc6241>.
[RFC6242] Wasserman, M., "Using the NETCONF Protocol over Secure
Shell (SSH)", RFC 6242, DOI 10.17487/RFC6242, June 2011,
<https://www.rfc-editor.org/info/rfc6242>.
[RFC7139] Zhang, F., Ed., Zhang, G., Belotti, S., Ceccarelli, D.,
and K. Pithewan, "GMPLS Signaling Extensions for Control
of Evolving G.709 Optical Transport Networks", RFC 7139,
DOI 10.17487/RFC7139, March 2014,
<https://www.rfc-editor.org/info/rfc7139>.
[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>.
[RFC7963] Ali, Z., Bonfanti, A., Hartley, M., and F. Zhang, "RSVP-TE
Extension for Additional Signal Types in G.709 Optical
Transport Networks (OTNs)", RFC 7963,
DOI 10.17487/RFC7963, August 2016,
<https://www.rfc-editor.org/info/rfc7963>.
[RFC8040] Bierman, A., Bjorklund, M., and K. Watsen, "RESTCONF
Protocol", RFC 8040, DOI 10.17487/RFC8040, January 2017,
<https://www.rfc-editor.org/info/rfc8040>.
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[RFC8341] Bierman, A. and M. Bjorklund, "Network Configuration
Access Control Model", STD 91, RFC 8341,
DOI 10.17487/RFC8341, March 2018,
<https://www.rfc-editor.org/info/rfc8341>.
[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>.
[RFC8446] Rescorla, E., "The Transport Layer Security (TLS) Protocol
Version 1.3", RFC 8446, DOI 10.17487/RFC8446, August 2018,
<https://www.rfc-editor.org/info/rfc8446>.
[RFC8776] Saad, T., Gandhi, R., Liu, X., Beeram, V., and I. Bryskin,
"Common YANG Data Types for Traffic Engineering",
RFC 8776, DOI 10.17487/RFC8776, June 2020,
<https://www.rfc-editor.org/info/rfc8776>.
10.2. Informative References
[I-D.ietf-ccamp-client-signal-yang]
Zheng, H., Guo, A., Busi, I., Snitser, A., Lazzeri, F.,
Xu, Y., Zhao, Y., Liu, X., and G. Fioccola, "A YANG Data
Model for Transport Network Client Signals", draft-ietf-
ccamp-client-signal-yang-04 (work in progress), January
2021.
[I-D.ietf-ccamp-l1csm-yang]
Lee, Y., Lee, K., Zheng, H., Dios, O., and D. Ceccarelli,
"A YANG Data Model for L1 Connectivity Service Model
(L1CSM)", draft-ietf-ccamp-l1csm-yang-13 (work in
progress), November 2020.
[I-D.ietf-ccamp-otn-topo-yang]
Zheng, H., Busi, I., Liu, X., Belotti, S., and O. Dios, "A
YANG Data Model for Optical Transport Network Topology",
draft-ietf-ccamp-otn-topo-yang-11 (work in progress),
September 2020.
[I-D.ietf-ccamp-otn-tunnel-model]
Zheng, H., Busi, I., Belotti, S., Lopez, V., and Y. Xu,
"OTN Tunnel YANG Model", draft-ietf-ccamp-otn-tunnel-
model-11 (work in progress), September 2020.
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[I-D.ietf-ccamp-transport-nbi-app-statement]
Busi, I., King, D., Zheng, H., and Y. Xu, "Transport
Northbound Interface Applicability Statement", draft-ietf-
ccamp-transport-nbi-app-statement-12 (work in progress),
January 2021.
[RFC7062] Zhang, F., Ed., Li, D., Li, H., Belotti, S., and D.
Ceccarelli, "Framework for GMPLS and PCE Control of G.709
Optical Transport Networks", RFC 7062,
DOI 10.17487/RFC7062, November 2013,
<https://www.rfc-editor.org/info/rfc7062>.
[RFC7138] Ceccarelli, D., Ed., Zhang, F., Belotti, S., Rao, R., and
J. Drake, "Traffic Engineering Extensions to OSPF for
GMPLS Control of Evolving G.709 Optical Transport
Networks", RFC 7138, DOI 10.17487/RFC7138, March 2014,
<https://www.rfc-editor.org/info/rfc7138>.
[RFC8792] Watsen, K., Auerswald, E., Farrel, A., and Q. Wu,
"Handling Long Lines in Content of Internet-Drafts and
RFCs", RFC 8792, DOI 10.17487/RFC8792, June 2020,
<https://www.rfc-editor.org/info/rfc8792>.
Appendix A. Examples of OTN Label Ranges
This appendix provides some examples of how the TPN and TS label
ranges described in Table 3 and Table 4 of [RFC7139] can be
represented in YANG using the groupings defined in this document.
It also considers the OTUk links in addition to HO-ODUk links.
The JSON code examples provided in this appendix provides some
embedded comments following the conventions in section 3.2 of
[I-D.ietf-ccamp-transport-nbi-app-statement] and have been folded
using the tool in [RFC8792].
========== NOTE: '\\' line wrapping per BCP XXX (RFC XXXX) ==========
{
"examples of label-restrictions for different OTN Links": [
{
"// ": "HO-ODU1 or OTU1 Link",
"label-restrictions": {
"label-restriction": [
{
"index ": 1,
"// ___DEFAULT___ restriction": "inclusive",
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"range-type": "label-range-trib-port",
"// ___NOT-PRESENT___ tsg": "",
"odu-type-list": "[ ODU1 ]",
"// ___DEFAULT___ priority": 7,
"// tpn-range": 1,
"// ___ COMMENT ___": "Since no TS range and no TSG are \
\reported for ODU1, the link is an OTU1 Link. TS allocation is not n\
\eeded and TPN shall be set to '1' for mapping ODU1 over OTU1. This \
\entry is not present if the OTN Link is an HO-ODU1 Link."
},
{
"index ": 2,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODU0 ]",
"// ts-range": "1-2",
"// ___ COMMENT ___": "Since no TPN range is reportd for\
\ ODU0 with 1.25G TSG, the TPN allocation rule is fixed (TPN = TS#) \
\for mapping LO-ODU0 over HO-ODU1 with 1.25G TSG. See Table 4 of [RF\
\C7139]."
}
]
}
},
{
"// ": "HO-ODU2 or OTU2 Link",
"label-restrictions": {
"label-restriction": [
{
"index ": 1,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"// ___NOT-PRESENT___ tsg": "",
"odu-type-list": "[ ODU2 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": 1,
"// ___ COMMENT ___": "Since no TS range and no TSG are \
\reported for ODU2, the link is an OTU2 Link. TS allocation is not n\
\eeded and TPN shall be set to '1' for mapping ODU2 over OTU2. This \
\entry is not present if the OTN Link is an HO-ODU2 Link."
},
{
"index ": 2,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
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\ ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-8"
},
{
"index ": 3,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G ",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-8",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for ODUflex and ODU0 with 1.25G TSG, the TPN assignment rule is fle\
\xible within a common range for mapping LO-ODUflex and LO-ODU0 over\
\ HO-ODU2 with 1.25G TSG. See Table 4 of [RFC7139]."
},
{
"index ": 4,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODU1 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-4",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for ODU1 with 1.25G TSG, the TPN assignment rule is flexible within\
\ a common range for mapping LO-ODU1 over HO-ODU2 with 1.25G TSG. Se\
\e Table 4 of [RFC7139]."
},
{
"index ": 5,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-2.5G",
"odu-type-list": "[ ODU1 ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-4",
"// ___ COMMENT ___": "Since no TPN range is reported fo\
\r ODU1 with 2.5G TSG, the TPN allocation rule is fixed (TPN = TS#) \
\for mapping LO-ODU1 over HO-ODU2 with 2.5G TSG. See Table 3 of [RFC\
\7139]."
}
]
}
},
{
"// ": "HO-ODU3 or OTU3 Link",
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"label-restrictions": {
"label-restriction": [
{
"index ": 1,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"// ___NOT-PRESENT___ tsg": "",
"odu-type-list": "[ ODU3 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": 1,
"// ___ COMMENT ___": "Since no TS range and no TSG are \
\reported for ODU3, the link is an OTU3 Link. TS allocation is not n\
\eeded and TPN shall be set to '1' for mapping ODU3 over OTU3. This \
\entry is not present if the OTN Link is an HO-ODU3 Link."
},
{
"index ": 2,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
\, ODU2, ODU2e ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-32"
},
{
"index ": 3,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU2\
\e ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-32",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for ODUflex, ODU0 and ODU2e with 1.25G TSG, the TPN assignment rule\
\ is flexible within a common range for mapping LO-ODUflex, LO-ODU0 \
\and LO-ODU2e over HO-ODU3 with 1.25G TSG. See Table 4 of [RFC7139]."
},
{
"index ": 4,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODU1 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-16",
"// ___ COMMENT ___": "Since this TPN range is reported \
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\for ODU1 with 1.25G TSG, the TPN assignment rule is flexible within\
\ a common range for mapping LO-ODU1 over HO-ODU3 with 1.25G TSG. Se\
\e Table 4 of [RFC7139]."
},
{
"index ": 5,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODU2 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-4",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for ODU2 with 1.25G TSG, the TPN assignment rule is flexible within\
\ a common range for mapping LO-ODU2 over HO-ODU3 with 1.25G TSG. Se\
\e Table 4 of [RFC7139]."
},
{
"index ": 6,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-2.5G",
"odu-type-list": "[ ODU1, ODU2 ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-16"
},
{
"index ": 7,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-2.5G ",
"odu-type-list": "[ ODU2 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-4",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for ODU2 with 2.5G TSG, the TPN assignment rule is flexible within \
\a common range for mapping LO-ODU2 over HO-ODU3. Since no TPN range\
\ is reported for ODU1 with 2.5G TSG, the TPN allocation rule is fix\
\ed (TPN = TS#) for mapping LO-ODU1 over HO-ODU3 with 2.5G TSG. See \
\Table 3 of [RFC7139]."
}
]
}
},
{
"// ": "HO-ODU4 or OTU4 Link",
"label-restrictions": {
"label-restriction": [
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{
"index ": 1,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"// ___NOT-PRESENT___ tsg": "",
"odu-type-list": "[ ODU4 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": 1,
"// ___ COMMENT ___": "Since no TS range and no TSG are \
\reported for ODU4, the link is an OTU4 Link. TS allocation is not n\
\eeded and TPN shall be set to '1' for mapping ODU4 over OTU4. This \
\entry is not present if the OTN Link is an HO-ODU4 Link."
},
{
"index ": 2,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
\, ODU2, ODU2e, ODU3 ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-80"
},
{
"index ": 3,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-1.25G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
\, ODU2, ODU2e, ODU3 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-80",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for any LO-ODUj with 1.25G TSG, the TPN assignment rule is flexible\
\ within a common range for mapping any LO-ODUj over HO-ODU4 with 1.\
\25G TSG. See Table 4 of [RFC7139]."
}
]
}
},
{
"// ": "ODUC1 Link",
"label-restrictions": {
"label-restriction": [
{
"index ": 1,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-slot",
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"tsg": "tsg-5G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
\, ODU2, ODU2e, ODU3, ODU4 ]",
"// ___ DEFAULT ___ priority": 7,
"// ts-range": "1-20",
"// ___ COMMENT ___": "Since the TS range is specified f\
\or any ODUk, the OTN Link is an ODUCn Link."
},
{
"index ": 2,
"// ___DEFAULT___ restriction": "inclusive",
"range-type": "label-range-trib-port",
"tsg": "tsg-5G",
"odu-type-list": "[ ODUFlex-cbr, ODUFlex-gfp, ODU0, ODU1\
\, ODU2, ODU2e, ODU3, ODU4 ]",
"// ___ DEFAULT ___ priority": 7,
"// tpn-range": "1-10",
"// ___ COMMENT ___": "Since this TPN range is reported \
\for any ODUk with 5G TSG, the TPN assignment rule is flexible withi\
\n a common range for mapping any ODUk over ODUCn with 5G TSG."
}
]
}
}
]
}
Authors' Addresses
Haomian Zheng
Huawei Technologies
H1, Huawei Xiliu Beipo Village, Songshan Lake
Dongguan, Guangdong 523808
China
Email: zhenghaomian@huawei.com
Italo Busi
Huawei Technologies
Milan
Italy
Email: Italo.Busi@huawei.com
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