module openconfig-mpls {

    yang-version 1;

    namespace
      "http://openconfig.net/yang/mpls";

    prefix oc-mpls;

    import openconfig-mpls-rsvp {
      prefix oc-rsvp;
    }
    import openconfig-mpls-ldp {
      prefix oc-ldp;
    }
    import openconfig-interfaces {
      prefix oc-if;
    }
    import openconfig-extensions {
      prefix oc-ext;
    }

    include openconfig-mpls-te;
    include openconfig-mpls-igp;
    include openconfig-mpls-static;

    organization "OpenConfig working group";

    contact
      "OpenConfig working group
netopenconfig@googlegroups.com";

    description
      "This module provides data definitions for configuration of
Multiprotocol Label Switching (MPLS) and associated protocols for
signaling and traffic engineering.

RFC 3031: Multiprotocol Label Switching Architecture

The MPLS / TE data model consists of several modules and
submodules as shown below.  The top-level MPLS module describes
the overall framework.  Three types of LSPs are supported:

i) traffic-engineered (or constrained-path)

ii) IGP-congruent (LSPs that follow the IGP path)

iii) static LSPs which are not signaled

The structure of each of these LSP configurations is defined in
corresponding submodules.  Companion modules define the relevant
configuration and operational data specific to key signaling
protocols used in operational practice.


			 +-------+
       +---------------->| MPLS  |<--------------+
       |                 +-------+               |
       |                     ^                   |
       |                     |                   |
  +----+-----+      +--------+-------+     +-----+-----+
  | TE LSPs  |      | IGP-based LSPs |     |static LSPs|
  |          |      |                |     |           |
  +----------+      +----------------+     +-----------+
      ^  ^                    ^  ^
      |  +----------------+   |  +--------+
      |                   |   |           |
      |   +------+      +-+---+-+      +--+--+
      +---+ RSVP |      |SEGMENT|      | LDP |
	  +------+      |ROUTING|      +-----+
			+-------+
";

    revision "2019-03-26" {
      description
        "Add Pseudowire encapsulation.";
      reference
        "3.1.0";

    }

    revision "2018-11-21" {
      description
        "Add OpenConfig module metadata extensions.";
      reference
        "3.0.1";

    }

    revision "2018-07-02" {
      description
        "Add new RSVP-TE statistics, remove associated-rsvp-session
leaf. Remove use of date-and-time.";
      reference
        "3.0.0";

    }

    revision "2018-06-16" {
      description
        "Included attributes for base LDP configuration.";
      reference
        "2.6.0";

    }

    revision "2018-06-13" {
      description
        "Add ttl-propagation to global MPLS config";
      reference
        "2.5.0";

    }

    revision "2018-06-05" {
      description
        "Fixed bugs in when statements on RSVP-TE attributes";
      reference
        "2.4.2";

    }

    revision "2017-08-24" {
      description "Minor formatting fixes.";
      reference
        "2.4.1";

    }

    revision "2017-06-21" {
      description "Add TC bits typedef.";
      reference
        "2.4.0";

    }

    revision "2017-03-22" {
      description
        "Add RSVP calculated-absolute-subscription-bw";
      reference
        "2.3.0";

    }

    revision "2017-01-26" {
      description
        "Add RSVP Tspec, clarify units for RSVP, remove unused LDP";
      reference
        "2.2.0";

    }

    revision "2016-12-15" {
      description
        "Add additional MPLS parameters";
      reference
        "2.1.0";

    }

    revision "2016-09-01" {
      description
        "Revisions based on implementation feedback";
      reference
        "2.0.0";

    }

    revision "2016-08-08" {
      description
        "Public release of MPLS models";
      reference
        "1.0.1";

    }

    oc-ext:openconfig-version "3.1.0";
    oc-ext:regexp-posix;
    oc-ext:catalog-organization "openconfig";
    oc-ext:origin "openconfig";

    grouping te-interface-attributes-top {
      description
        "Top level grouping for attributes
for TE interfaces.";
      list interface {
        key "interface-id";
        description "List of TE interfaces";
        leaf interface-id {
          type leafref {
            path "../config/interface-id";
          }
          description
            "Reference to the interface id list key";
        }

        container config {
          description
            "Configuration parameters related to TE interfaces:";
          uses te-interface-attributes-config;
        }  // container config
      }  // list interface
    }  // grouping te-interface-attributes-top

    grouping te-interface-attributes-config {
      description
        "global level definitions for interfaces
on which TE is run";
      leaf interface-id {
        type oc-if:interface-id;
        description "Id of the interface";
      }
    }  // grouping te-interface-attributes-config

    grouping mpls-interfaces-top {
      description
        "Top level grouping for attributes
for MPLS-enabled interfaces.";
      container interface-attributes {
        description
          "Parameters related to MPLS interfaces";
        list interface {
          key "interface-id";
          description
            "List of TE interfaces";
          leaf interface-id {
            type leafref {
              path "../config/interface-id";
            }
            description
              "Reference to the interface id list key";
          }

          container config {
            description
              "Configuration parameters related to MPLS interfaces:";
            uses mpls-interface-attributes-config;
          }  // container config
        }  // list interface
      }  // container interface-attributes
    }  // grouping mpls-interfaces-top

    grouping mpls-interface-attributes-config {
      description
        "global level definitions for interfaces
on which MPLS is run";
      leaf interface-id {
        type oc-if:interface-id;
        description
          "Indentifier for the MPLS interface";
      }

      leaf mpls-enabled {
        type boolean;
        default "false";
        description
          "Enable MPLS forwarding on this interface";
      }
    }  // grouping mpls-interface-attributes-config

    grouping mpls-top {
      description
        "Top level grouping for MPLS configuration and state";
      container mpls {
        description
          "Anchor point for mpls configuration and operational
data";
        container global {
          description
            "general mpls configuration applicable to any
type of LSP and signaling protocol - label ranges,
entropy label supportmay be added here";
          uses mpls-interfaces-top;
        }  // container global

        container te-interface-attributes {
          description
            "traffic engineering attributes specific
for interfaces";
          uses te-interface-attributes-top;
        }  // container te-interface-attributes

        container signaling-protocols {
          description
            "top-level signaling protocol configuration";
          uses oc-rsvp:rsvp-global;

          uses oc-ldp:ldp-global;
        }  // container signaling-protocols

        container lsps {
          description
            "LSP definitions and configuration";
          container constrained-path {
            description
              "traffic-engineered LSPs supporting different
path computation and signaling methods";
            uses te-tunnels-top;
          }  // container constrained-path
        }  // container lsps
      }  // container mpls
    }  // grouping mpls-top
  }  // module openconfig-mpls