module ietf-network-topology {

    yang-version 1.1;

    namespace
      "urn:ietf:params:xml:ns:yang:ietf-network-topology";

    prefix nt;

    import ietf-inet-types {
      prefix inet;
      reference
        "RFC 6991: Common YANG Data Types";


    }
    import ietf-network {
      prefix nw;
      reference
        "RFC 8345: A YANG Data Model for Network Topologies";


    }

    organization
      "IETF I2RS (Interface to the Routing System) Working Group";

    contact
      "WG Web:    <https://datatracker.ietf.org/wg/i2rs/>
WG List:   <mailto:i2rs@ietf.org>

Editor:    Alexander Clemm
	   <mailto:ludwig@clemm.org>

Editor:    Jan Medved
	   <mailto:jmedved@cisco.com>

Editor:    Robert Varga
	   <mailto:robert.varga@pantheon.tech>

Editor:    Nitin Bahadur
	   <mailto:nitin_bahadur@yahoo.com>

Editor:    Hariharan Ananthakrishnan
	   <mailto:hari@packetdesign.com>

Editor:    Xufeng Liu
	   <mailto:xufeng.liu.ietf@gmail.com>";

    description
      "This module defines a common base model for a network topology,
augmenting the base network data model with links to connect
nodes, as well as termination points to terminate links
on nodes.

Copyright (c) 2018 IETF Trust and the persons identified as
authors of the code.  All rights reserved.

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 8345;
see the RFC itself for full legal notices.";

    revision "2018-02-26" {
      description "Initial revision.";
      reference
        "RFC 8345: A YANG Data Model for Network Topologies";

    }


    typedef link-id {
      type inet:uri;
      description
        "An identifier for a link in a topology.  The precise
structure of the link-id will be up to the implementation.
The identifier SHOULD be chosen such that the same link in a
real network topology will always be identified through the
same identifier, even if the data model is instantiated in
separate datastores.  An implementation MAY choose to capture
semantics in the identifier -- for example, to indicate the
type of link and/or the type of topology of which the link is
a part.";
    }

    typedef tp-id {
      type inet:uri;
      description
        "An identifier for termination points on a node.  The precise
structure of the tp-id will be up to the implementation.
The identifier SHOULD be chosen such that the same termination
point in a real network topology will always be identified
through the same identifier, even if the data model is
instantiated in separate datastores.  An implementation MAY
choose to capture semantics in the identifier -- for example,
to indicate the type of termination point and/or the type of
node that contains the termination point.";
    }
  }  // module ietf-network-topology