module fujitsu-ppp-interface {

    yang-version 1;

    namespace
      "urn:fujitsu:params:xml:ns:yang:interface:ppp";

    prefix ppp;

    import ietf-interfaces {
      prefix if;
    }
    import fujitsu-entity-states {
      prefix entity-states;
    }

    organization "Fujitsu Ltd.";

    contact
      "Fujitsu Ltd.

        Address: 2801 Telecom Parkway
                 Richardson, Texas 75082

        Tel: +1-800-USE-FTAC (1-800-873-3822)
        Email: ftac@fnc.fujitsu.com
        Author: Abinder S Dhillon
        Web: www.fujitsu.com/us/services/telecom";

    description
      "This module contains YANG definitions 
        for the PPP Interfaces. 

        Copyright (c) 2015 Fujitsu Ltd.
        All rights reserved. ";

    revision "2017-05-08" {
      description "Add PPP sync leaf.";
    }

    revision "2016-01-11" {
      description "Initial revision.";
    }


    grouping ppp-attributes {
      description
        "Point to Point (PPP)  attributes";
      leaf restartTimer {
        type uint32;
        must ". = 3" {
          error-message
            "restartTimer must be 3.";
        }
        default "3";
        description
          " Restart Timer timer is used to time transmissions of
                  Configure-Request and Terminate-Request packets.
                  Expiration of the Restart timer causes a Timeout event,
                  and retransmission of the corresponding Configure-Request
                  or Terminate-Request packet.
                  default: 3 seconds
                  Standards allow this configurable but we only support
                  3 seconds";
      }

      leaf MRU {
        type uint32 {
          range "128..16384";
        }
        default "1500";
        description
          " PPP Maximum Receive Unit size";
      }

      leaf magicNumber {
        type boolean;
        default "false";
        description
          " If true then the local node will attempt to
                  perform Magic Number negotiation with the
                  remote node. If false then this negotiation
                  is not performed";
      }

      leaf fcsSize {
        type uint32;
        must ". = 16" {
          error-message
            "fcsSize must be 16.";
        }
        default "16";
        description
          " The size of FCS in bits
            Allowed value is only 16
          default : 16 ";
      }

      leaf sync {
        type boolean;
        default "false";
        description
          "Enable/disable HDLC serial encoding rule.";
      }

      uses entity-states:admin-status {
        refine admin-status {
          default 'down';
          mandatory false;
          description
            "PPP port admin status";
        }
      }
    }  // grouping ppp-attributes

    augment /if:interfaces/if:interface {
      container ppp-config {
        when "../if:type = 'ianaift:ppp'";
        description "PPP Interface";
        uses ppp-attributes;
      }  // container ppp-config
    }

    grouping ppp-packet-stats {
      leaf numBytesRx {
        type uint32;
        description
          " Number of Received Bytes";
      }

      leaf numBytesTx {
        type uint32;
        description " Number of Tx Bytes";
      }

      leaf numPduRx {
        type uint32;
        description
          " Number of Received PDus";
      }

      leaf numPduTx {
        type uint32;
        description " Number of Tx PDUs";
      }
    }  // grouping ppp-packet-stats

    augment /if:interfaces-state/if:interface {
      container ppp-if-status {
        when "../if:type = 'ianaift:ppp'";
        description "PPP Interface Status";
        container packet-stats {
          uses ppp-packet-stats {
            description " PPP Link Status";
          }
        }  // container packet-stats
      }  // container ppp-if-status
    }
  }  // module fujitsu-ppp-interface