Internet DRAFT - draft-zheng-ccamp-client-tunnel-yang
draft-zheng-ccamp-client-tunnel-yang
CCAMP Working Group C. Yu
Internet-Draft H. Zheng
Intended status: Standards Track Huawei Technologies
Expires: 11 April 2024 A. Guo
Futurewei
I. Busi
Huawei Technologies
Y. Xu
CAICT
Y. Zhao
China Mobile
X. Liu
Alef Edge
9 October 2023
A YANG Data Model for Client-layer Tunnel
draft-zheng-ccamp-client-tunnel-yang-13
Abstract
A transport network is a server-layer network to provide connectivity
services to its client. In this draft the tunnel of client is
described, with the definition of client tunnel YANG model.
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
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Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on 11 April 2024.
Copyright Notice
Copyright (c) 2023 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Please review these documents carefully, as they describe your rights
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology and Notations . . . . . . . . . . . . . . . . . . 3
3. YANG Model for Client-layer Tunnel . . . . . . . . . . . . . 3
3.1. YANG Tree for Ethernet Tunnel . . . . . . . . . . . . . . 3
3.2. YANG Tree for Tunnel of other Client Signal Model . . . . 4
4. YANG Code for Client-layer Tunnel . . . . . . . . . . . . . . 4
4.1. The ETH Tunnel YANG Code . . . . . . . . . . . . . . . . 4
4.2. Other Client-layer Tunnel YANG Code . . . . . . . . . . . 6
5. Considerations and Open Issue . . . . . . . . . . . . . . . . 6
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
7. Manageability Considerations . . . . . . . . . . . . . . . . 6
8. Security Considerations . . . . . . . . . . . . . . . . . . . 6
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 7
9.1. Normative References . . . . . . . . . . . . . . . . . . 7
9.2. Informative References . . . . . . . . . . . . . . . . . 7
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 8
Contributors . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
A transport network is a server-layer network designed to provide
connectivity services for a client-layer network to carry the client
traffic transparently across the server-layer network resources. The
tunnel model in Traffic-Engineered network has been defined in both
generic way and technology-specific way. The generic model, which is
the base TE tunnel YANG model, can be found at
[I-D.ietf-teas-yang-te]. Technology-specific models, such as OTN/
WSON tunnel model, have also been defined in
[I-D.ietf-ccamp-otn-tunnel-model] and
[I-D.ietf-ccamp-wson-tunnel-model] respectively. Corresponding
tunnel on client-layer is also required, to have a complete topology
view from the perspective of network controllers.
This document defines a data model of all client-layer tunnel, using
YANG language defined in [RFC7950]. The model is augmenting the
generic TE tunnel model, and can be used by applications exposing to
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a network controller via a REST interface. Furthermore, it can be
used by an application to describe the client tunnel that constructed
above the server-layer network. It is also worth noting that the
client layer network will only need the tunnel model when there is a
demand for switching techniques, such as Carrier Ethernet and MPLS-
TP. The transparent signals do not need this model.
2. Terminology and Notations
A simplified graphical representation of the data model is used in
this document. The meaning of the symbols in the YANG data tree
presented later in this document is defined in [RFC8340]. They are
provided below for reference.
* Brackets "[" and "]" enclose list keys.
* Abbreviations before data node names: "rw" means configuration
(read-write) and "ro" state data (read-only).
* Symbols after data node names: "?" means an optional node, "!"
means a presence container, and "*" denotes a list and leaf-list.
* Parentheses enclose choice and case nodes, and case nodes are also
marked with a colon (":").
* Ellipsis ("...") stands for contents of subtrees that are not
shown.
3. YANG Model for Client-layer Tunnel
3.1. YANG Tree for Ethernet Tunnel
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module: ietf-eth-te-tunnel
augment /te:te/te:tunnels/te:tunnel:
+--rw src-eth-tunnel-endpoint
| +--rw vlanid? etht-types:vlanid
| +--rw tag-type? etht-types:eth-tag-type
+--rw dst-eth-tunnel-endpoint
| +--rw vlanid? etht-types:vlanid
| +--rw tag-type? etht-types:eth-tag-type
+--rw bandwidth-profile
+--rw bandwidth-profile-type?
| etht-types:bandwidth-profile-type
+--rw CIR? uint64
+--rw CBS? uint64
+--rw EIR? uint64
+--rw EBS? uint64
+--rw color-aware? boolean
+--rw coupling-flag? boolean
Figure 1: Ethernet TE Tunnel YANG tree
3.2. YANG Tree for Tunnel of other Client Signal Model
This section will be completed later.
4. YANG Code for Client-layer Tunnel
4.1. The ETH Tunnel YANG Code
<CODE BEGINS> file "ietf-eth-te-tunnel@2018-03-01.yang"
module ietf-eth-te-tunnel {
namespace "urn:ietf:params:xml:ns:yang:ietf-eth-te-tunnel";
prefix "eth-tunnel";
import ietf-te {
prefix "te";
}
import ietf-eth-tran-types {
prefix "etht-types";
}
organization
"Internet Engineering Task Force (IETF) CCAMP WG";
contact
"
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WG List: <mailto:ccamp@ietf.org>
ID-draft editor:
Haomian Zheng (zhenghaomian@huawei.com);
Italo Busi (italo.busi@huawei.com);
Aihua Guo (aihuaguo.ietf@gmail.com);
Yunbin Xu (xuyunbin@caict.ac.cn);
Yang Zhao (zhaoyangyjy@chinamobile.com);
Xufeng Liu (xufeng.liu.ietf@gmail.com);
";
description
"This module defines a model for ETH transport tunnel";
revision 2018-03-01 {
description
"Initial revision";
reference
"draft-zheng-ccamp-client-tunnel-yang";
}
grouping eth-tunnel-endpoint {
description "Parameters for ETH tunnel.";
leaf vlanid {
type etht-types:vlanid;
description
"VLAN tag id.";
}
leaf tag-type {
type etht-types:eth-tag-type;
description "VLAN tag type.";
}
}
augment "/te:te/te:tunnels/te:tunnel" {
description
"Augment with additional parameters required for ETH
service.";
container src-eth-tunnel-endpoint {
description
"Source ETH tunnel endpoint.";
uses eth-tunnel-endpoint;
}
container dst-eth-tunnel-endpoint {
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description
"Destination ETH tunnel endpoint.";
uses eth-tunnel-endpoint;
}
container bandwidth-profile {
description
"ETH tunnel bandwidth profile specification.";
uses etht-types:etht-bandwidth-profiles;
}
}
}
<CODE ENDS>
Figure 2: Ethernet TE Tunnel YANG module
4.2. Other Client-layer Tunnel YANG Code
TBD.
5. Considerations and Open Issue
Editor Notes: This section is used to note temporary discussion/
conclusion that to be fixed in the future version, and will be
removed before publication. This is a part of L2 work, need to
discuss how to go with other L2 network models. The expectation is
to include all potential L2 TE part in this work.
6. IANA Considerations
TBD.
7. Manageability Considerations
TBD.
8. Security Considerations
The data following the model defined in this document is exchanged
via, for example, the interface between an orchestrator and a
transport network controller. The security concerns mentioned in
[I-D.ietf-teas-yang-te] also applies to this document.
The YANG module defined in this document can be accessed via the
RESTCONF protocol defined in [RFC8040], or maybe via the NETCONF
protocol [RFC6241].
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9. References
9.1. Normative References
[I-D.ietf-teas-yang-te]
Saad, T., Gandhi, R., Liu, X., Beeram, V. P., Bryskin, I.,
and O. G. de Dios, "A YANG Data Model for Traffic
Engineering Tunnels, Label Switched Paths and Interfaces",
Work in Progress, Internet-Draft, draft-ietf-teas-yang-te-
33, 4 July 2023, <https://datatracker.ietf.org/doc/html/
draft-ietf-teas-yang-te-33>.
[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>.
[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>.
[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>.
9.2. Informative References
[I-D.ietf-ccamp-otn-tunnel-model]
Zheng, H., Busi, I., Belotti, S., Lopez, V., and Y. Xu,
"OTN Tunnel YANG Model", Work in Progress, Internet-Draft,
draft-ietf-ccamp-otn-tunnel-model-18, 3 April 2023,
<https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-
otn-tunnel-model-18>.
[I-D.ietf-ccamp-wson-tunnel-model]
Lee, Y., Zheng, H., Guo, A., Lopez, V., King, D., Yoon, B.
Y., and R. Vilalta, "A Yang Data Model for WSON Tunnel",
Work in Progress, Internet-Draft, draft-ietf-ccamp-wson-
tunnel-model-09, 9 July 2023,
<https://datatracker.ietf.org/doc/html/draft-ietf-ccamp-
wson-tunnel-model-09>.
[RFC8340] Bjorklund, M. and L. Berger, Ed., "YANG Tree Diagrams",
BCP 215, RFC 8340, DOI 10.17487/RFC8340, March 2018,
<https://www.rfc-editor.org/info/rfc8340>.
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Acknowledgments
We would like to thank Igor Bryskin and Daniel King for their
comments and discussions.
Contributors
Zhe Liu
Huawei Technologies
Email: liuzhe123@huawei.com
Sergio Belotti
Nokia
Email: sergio.belotti@nokia.com
Yingxi Yao
Shanghai Bell
Email: yingxi.yao@nokia-sbell.com
Giuseppe Fioccola
Huawei Technologies
Email: giuseppe.fioccola@huawei.com
Yanlei Zheng
China Unicom
Email: zhengyanlei@chinaunicom.cn
Authors' Addresses
Chaode Yu
Huawei Technologies
Email: yuchaode@huawei.com
Haomian Zheng
Huawei Technologies
H1, Huawei Xiliu Beipo Village, Songshan Lake
Dongguan
Guangdong, 523808
China
Email: zhenghaomian@huawei.com
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Aihua Guo
Futurewei
Email: aihuaguo@futurewei.com
Italo Busi
Huawei Technologies
Email: italo.busi@huawei.com
Yunbin Xu
CAICT
Email: xuyunbin@caict.ac.cn
Yang Zhao
China Mobile
Email: zhaoyangyjy@chinamobile.com
Xufeng Liu
Alef Edge
Email: xufeng.liu.ietf@gmail.com
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