module czechlight-lldp {
  yang-version 1.1;
  namespace
    "http://czechlight.cesnet.cz/yang/czechlight-lldp";

  prefix "cla-lldp";

  import iana-afn-safi {
    prefix ianaaf;
    revision-date 2013-07-04;
  }
  import ietf-inet-types {
    prefix inet;
    revision-date 2013-07-15;
  }

  organization "CESNET";
  contact "photonic@cesnet.cz";
  description
    "Model for listing neighbours discovered via LLDP protocol.
     Based on OpenROADM's org-openroadm-lldp@2020-05-29 model.";

  revision 2020-11-04 {
    description "Allow multiple neighbor entries on in interface.";
  }
  revision 2020-08-25 {
    description "Initial release";
  }

  typedef capabilities {
    type bits {
      bit other {
        position 0;
        description
          "This bit indicates that the system has capabilities
           other than those listed below.";
      }
      bit repeater {
        position 1;
        description
          "This bit indicates that the system has repeater
           capability.";
      }
      bit bridge {
        position 2;
        description
          "This bit indicates that the system has bridge
           capability.";
      }
      bit wlan-access-point {
        position 3;
        description
          "This bit indicates that the system has
           WLAN access point capability.";
      }
      bit router {
        position 4;
        description
          "This bit indicates that the system has router
           capability.";
      }
      bit telephone {
        position 5;
        description
          "This bit indicates that the system has telephone
           capability.";
      }
      bit docsis-cable-device {
        position 6;
        description
          "This bit indicates that the system has
           DOCSIS Cable Device capability (IETF RFC 4639 & 2670).";
      }
      bit station-only {
        position 7;
        description
          "This bit indicates that the system has only
           station capability and nothing else.";
      }
      bit cvlan-component {
        position 8;
        description
          "This bit indicates that the system has
           C-VLAN component functionality.";
      }
      bit svlan-component {
        position 9;
        description
          "This bit indicates that the system has
           S-VLAN component functionality.";
      }
      bit two-port-mac-relay {
        position 10;
        description
          "This bit indicates that the system has
           Two-port MAC Relay (TPMR) functionality.";
      }
    }
    description
      "This describes system capabilities.";
    reference
      "IEEE Std 802.1AB-2016: 8.5.8.1";

  }

  typedef chassisSubtype {
    type enumeration {
      enum reserved {
        value 0;
        description
          "reserved";
      }
      enum chassiscomponent {
        value 1;
        description
          "Chassis component (EntPhysicalAlias IETF RFC 4133)";
      }
      enum ifalias {
        value 2;
        description
          "Interface Alias (IfAlias - IETF RFC 2863) ";
      }
      enum portcomponent {
        value 3;
        description
          "Port component (EntPhysicalAlias IETF RFC 4133)";
      }
      enum macaddress {
        value 4;
        description
          "MAC address (IEEE Std 802) ";
      }
      enum networkaddress {
        value 5;
        description
          "Network Address";
      }
      enum ifname {
        value 6;
        description
          "Interface Name (ifName - IETF RFC 2863)";
      }
      enum local {
        value 7;
        description
          "Locally assigned";
      }
    }
  }
  typedef portSubtype {
    type enumeration {
      enum other {
        value 0;
        description
          "reserved";
      }
      enum ifalias {
        value 1;
        description
          "Interface Alias (IfAlias - IETF RFC 2863) ";
      }
      enum portcomponent {
        value 2;
        description
          "Port component (EntPhysicalAlias IETF RFC 4133)";
      }
      enum macaddress {
        value 3;
        description
          "MAC address (IEEE Std 802) ";
      }
      enum networkaddress {
        value 4;
        description
          "Network Address";
      }
      enum ifname {
        value 5;
        description
          "Interface Name (ifName - IETF RFC 2863)";
      }
      enum agentcircuitid {
        value 6;
        description
          "Agent Circuit Id (IETF RFC 3046)";
      }
      enum local {
        value 7;
        description
          "Locally assigned";
      }
    }
  }

  container nbr-list {
    config false;
    description
      "LLDP Operational data - Neighbour List information";

    list neighbors {
      leaf ifName {
        type string;
        description
          "Ethernet interface name where LLDP runs";
      }
      leaf remoteSysName {
        type string;
        description
          "remote neighbour system name";
      }
      leaf remoteMgmtAddressSubType {
        type ianaaf:address-family;
        description
          "remote neighbour Management Address Subtype Enumeration";
      }
      leaf remoteMgmtAddress {
        type inet:ip-address;
        description
          "remote neighbour management address";
      }
      leaf remotePortIdSubType {
        type cla-lldp:portSubtype;
        description
          "remote neighbour Port ID Subtype Enumeration";
      }
      leaf remotePortId {
        type string;
        description
          "remote neighbour port Id";
      }
      leaf remoteChassisIdSubType {
        type cla-lldp:chassisSubtype;
        description
          "Chassis ID Subtype Enumeration";
      }
      leaf remoteChassisId {
        type string;
        description
          "remote neighbour Chassis Id";
      }
      leaf systemCapabilitiesSupported {
        type cla-lldp:capabilities;
        description
          "The bitmap value used to identify which system capabilities
           are supported on the local system.";
        reference
          "IEEE Std 802.1AB-2016: 8.5.8.1";
      }

      leaf systemCapabilitiesEnabled {
        type cla-lldp:capabilities;
        description
          "The bitmap value used to identify which system capabilities
           are enabled on the local system.";
        reference
          "IEEE Std 802.1AB-2016: 8.5.8.2";
      }
    }
  }
}