YANG Data Model for Point-to-Point Tunnel Policy
draft-li-rtgwg-tunnel-policy-yang-02

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INTERNET-DRAFT                                                     Z. Li
Intended status: Proposed Standard                             S. Zhuang
                                                                  G. Yan
                                                             D. Eastlake
                                                                  Huawei
Expires: May 7, 2019                                    November 8, 2018

            YANG Data Model for Point-to-Point Tunnel Policy
                  draft-li-rtgwg-tunnel-policy-yang-02

Abstract

   This document defines a YANG data model that can be used to configure
   and manage point-to-point tunnel policy.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Distribution of this document is unlimited. Comments should be sent
   to the authors or the TRILL working group mailing list:
   trill@ietf.org.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   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."

   The list of current Internet-Drafts can be accessed at
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L. Zhenbin, et al                                               [Page 1]
INTERNET-DRAFT                              YANG Model for Tunnel Policy

Table of Contents

      1. Introduction............................................3
      2. Definitions and Acronyms................................3

      3. Introduction............................................4
      3.1 Tunnel Policy..........................................4
      3.1.1 Selection Sequence...................................4
      3.1.2 Tunnel Binding.......................................4
      3.2 Tunnel Selector for Routes.............................5
      3.3 Tunnel Selector for VPNs...............................6

      4. Design of Data Model....................................7
      4.1 Tunnel Policy YANG Model...............................7
      4.2 Tunnel Selector YANG Model.............................7

      5. Tunnel Policy Yang Module...............................9

      6. IANA Considerations....................................24
      7. Security Considerations................................24

      Acknowledgements..........................................25

      Informational References..................................26
      Normative References......................................26

      Authors' Addresses........................................27

L. Zhenbin, et al                                               [Page 2]
INTERNET-DRAFT                              YANG Model for Tunnel Policy

1. Introduction

   YANG [RFC6020] is a data definition language used to define the
   contents of a conceptual data store that allows networked devices to
   be managed using NETCONF [RFC6241].  YANG is proving relevant beyond
   its initial confines, as bindings to other interfaces (e.g. ReST) and
   encoding other than XML (e.g. JSON) are being defined.  Furthermore,
   YANG data models can be used as the basis of implementation for other
   interfaces, such as CLI and programmatic APIs.

   This document defines a YANG data model that can be used to configure
   and manage point-to-point tunnel policy.

2. Definitions and Acronyms

   JSON: JavaScript Object Notation

   LSP: Label Switched Path

   NETCONF: Network Configuration Protocol

   RD: Route Distinguisher

   TNLM: Tunnel Management

   VPN: Virtual Private Network

   YANG: A data definition language specified in [RFC6020] for use with
      NETCONF [RFC6241]

L. Zhenbin, et al                                               [Page 3]
INTERNET-DRAFT                              YANG Model for Tunnel Policy

3. Introduction

3.1 Tunnel Policy

   Multiple types of tunnels can be used for VPN services, such as LDP
   LSPs, static LSPs, and CRLSP.  It is necessary to select different
   tunnels for the VPN services to satisfy the required specific tunnel
   policy.

   A tunnel policy determines which type of tunnels can be selected.
   Tunnel policies can be classified into two modes:

   o  Selection Sequence: The system selects a tunnel for the service
      based on the tunnel type priorities defined in the tunnel policy.

   o  Tunnel binding: The system selects only a specified tunnel for the
      service.

3.1.1 Selection Sequence

   Selection sequence, as a tunnel policy mode, specifies the tunnel-
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