SF Aware TE Topology YANG Model
draft-ietf-teas-sf-aware-topo-model-02
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Network Working Group I. Bryskin
Internet-Draft Huawei Technologies
Intended status: Informational X. Liu
Expires: March 25, 2019 Volta Networks
Y. Lee
J. Guichard
Huawei Technologies
L. Contreras
Telefonica
D. Ceccarelli
Ericsson
J. Tantsura
Nuage Networks
September 21, 2018
SF Aware TE Topology YANG Model
draft-ietf-teas-sf-aware-topo-model-02
Abstract
This document describes a YANG data model for TE network topologies
that are network service and function aware.
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 March 25, 2019.
Copyright Notice
Copyright (c) 2018 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
Bryskin, et al. Expires March 25, 2019 [Page 1]
Internet-Draft SF Aware Topo YANG Model September 2018
(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 . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Tree Diagrams . . . . . . . . . . . . . . . . . . . . . . 5
1.3. Prefixes in Data Node Names . . . . . . . . . . . . . . . 5
2. Modeling Considerations . . . . . . . . . . . . . . . . . . . 6
3. Model Structure . . . . . . . . . . . . . . . . . . . . . . . 7
4. YANG Modules . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Model Structure . . . . . . . . . . . . . . . . . . . . . . . 15
6. YANG Modules . . . . . . . . . . . . . . . . . . . . . . . . 17
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 22
8. Security Considerations . . . . . . . . . . . . . . . . . . . 23
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.1. Normative References . . . . . . . . . . . . . . . . . . 23
9.2. Informative References . . . . . . . . . . . . . . . . . 24
9.3. Normative References . . . . . . . . . . . . . . . . . . 25
Appendix A. Companion YANG Model for Non-NMDA Compliant
Implementations . . . . . . . . . . . . . . . . . . 26
A.1. SF Aware TE Topology State Module . . . . . . . . . . . . 26
Appendix B. Data Examples . . . . . . . . . . . . . . . . . . . 28
B.1. A Topology with Multiple Connected Network Functions . . 28
B.2. A Topology with an Encapsulated Network Service . . . . . 33
Appendix C. Use Cases for SF Aware Topology Models . . . . . . . 37
C.1. Exporting SF/NF Information to Network Clients and Other
Network SDN Controllers . . . . . . . . . . . . . . . . . 37
C.2. Flat End-to-end SFCs Managed on Multi-domain Networks . 38
C.3. Managing SFCs with TE Constraints . . . . . . . . . . . . 39
C.4. SFC Protection and Load Balancing . . . . . . . . . . . . 40
C.5. Network Clock Synchronization . . . . . . . . . . . . . . 43
C.6. Client - Provider Network Slicing Interface . . . . . . . 43
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