module huawei-bras-cu-agent {

    yang-version 1;

    namespace
      'urn:huawei:yang:huawei-bras-cu-agent';

    prefix bras-cu-agent;

    import ietf-inet-types {
      prefix inet;
    }
    import huawei-ifm {
      prefix ifm;
    }
    import huawei-monitor-group {
      prefix monitor-group;
    }
    import huawei-route-monitor-group {
      prefix rmg;
    }
    import huawei-bfd {
      prefix bfd;
    }
    import huawei-fim-ifm {
      prefix fim-ifm;
    }
    import huawei-extension {
      prefix ext;
    }

    organization
      "Huawei Technologies Co., Ltd.";

    contact
      "Huawei Industrial Base
     Bantian, Longgang
     Shenzhen 518129
     People's Republic of China
     Website: http://www.huawei.com
     Email: support@huawei.com";

    description "CU agent.";

    revision "2019-04-26" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "bras-control";

    typedef cu-mode-access-type {
      type enumeration {
        enum "layer2" {
          value 2;
          description "Layer2 access.";
        }
        enum "layer3" {
          value 3;
          description "Layer3 access.";
        }
        enum "layer3-leased-line" {
          value 4;
          description "Layer3 leased line.";
        }
      }
      description "CU mode access type.";
    }

    typedef cu-mode-type {
      type enumeration {
        enum "true" {
          value 1;
          description "CU mode is enabled.";
        }
      }
      description "CU mode type.";
    }

    container bras-cu-agent {
      description
        "Specify configuration information of CU agent.";
      container cu-agent {
        presence
          "Enable the UP mode so that the current device functions as a vBRAS-UP.";
        description
          "Enable/disable the UP mode so that the current device functions as a vBRAS-UP.";
        container interface-monitoring-groups {
          description
            "List of configuring a vBRAS-UP to track the session status of interface monitoring groups to detect network-side link faults.";
          list interface-monitoring-group {
            key "name";
            description
              "Configure a vBRAS-UP to track the session status of a specified interface monitoring group.";
            leaf name {
              type leafref {
                path "/monitor-group:monitor-group/monitor-group:groups/monitor-group:group/monitor-group:name";
              }
              description
                "Name of an interface monitoring group.";
            }

            leaf down-weight {
              type uint32 {
                range "1..32000";
              }
              mandatory true;
              description
                "Interface weight for reporting a network-side fault. A higher weight indicates a higher fault priority.";
            }
          }  // list interface-monitoring-group
        }  // container interface-monitoring-groups

        container route-monitoring-groups {
          description
            "List of configuring a vBRAS-UP to track the session status of a route monitoring group to detect network-side link faults.";
          list route-monitoring-group {
            key "name";
            description
              "Configure a vBRAS-UP to track the session status of a specified route monitoring group.";
            leaf name {
              type leafref {
                path "/rmg:route-monitor-group/rmg:monitor-groups/rmg:monitor-group/rmg:group-name";
              }
              description
                "Name of a route monitoring group.";
            }

            leaf down-weight {
              type uint32 {
                range "1..32000";
              }
              mandatory true;
              description
                "Route weight for reporting a network-side fault. A higher weight indicates a higher fault priority.";
            }
          }  // list route-monitoring-group
        }  // container route-monitoring-groups

        container bfd-sessions {
          description
            "List of configure a vBRAS-UP to track the status of a BFD session to detect access-side faults.";
          list bfd-session {
            key "name";
            description
              "Configure a vBRAS-UP to track the status of a BFD session.";
            leaf name {
              type leafref {
                path "/bfd:bfd/bfd:sessions/bfd:session/bfd:name";
              }
              description
                "Name of a BFD session.";
            }
          }  // list bfd-session
        }  // container bfd-sessions

        container up-nqa-detect {
          presence "Creat up-nqa-detect.";
          description
            "Enable/disable NQA dectct to the VXLAN tunnel.";
          leaf count {
            type uint32 {
              range "0..4294967295";
            }
            default "3";
            description
              "Number of sent Echo Request messages.";
          }

          leaf interval {
            type uint32 {
              range "1..10000";
            }
            units "min";
            default "1";
            description
              "Time elapses before a next Echo Request message is sent.";
          }

          leaf timeout {
            type uint32 {
              range "1..65535";
            }
            units "min";
            default "1";
            description
              "Timeout period of waiting for an Echo Reply message.";
          }

          leaf destination-port {
            type uint32 {
              range "1..65535";
            }
            mandatory true;
            description
              "Destination port number.";
          }
        }  // container up-nqa-detect

        container up-cusp-agent {
          config false;
          description
            "Operational state of binding a CUSP agent to the vBRAS-UP and the control tunnel between the vBRAS-CP and vBRAS-UP is established.";
          leaf name {
            type string {
              length "1..31";
            }
            description
              "Name of the CUSP agent bound to the control tunnel. After the CUSP agent is bound to the vBRAS-UP, the control tunnel between the vBRAS-CP and vBRAS-UP is established.";
          }
        }  // container up-cusp-agent

        container up-vxlan-channels {
          config false;
          description
            "List of binding VxLAN Tunnel state.";
          list up-vxlan-channel {
            key "vni source-ip-address destination-ip-address";
            description
              "Binding VxLAN Tunnel state.";
            leaf vni {
              type uint32 {
                range "1..16777215";
              }
              description
                "VxLAN Network Identify.";
            }

            leaf source-ip-address {
              type inet:ipv4-address-no-zone;
              description
                "Source IP Address.";
            }

            leaf destination-ip-address {
              type inet:ipv4-address-no-zone;
              description
                "Destination IP Address.";
            }

            leaf vpn-instance-name {
              type string {
                length "1..31";
              }
              description
                "VPN Instance Name.";
            }
          }  // list up-vxlan-channel
        }  // container up-vxlan-channels
      }  // container cu-agent

      container up-versions {
        config false;
        description
          "List of Checking CU interface version information on the UP side state.";
        list up-version {
          key "instance";
          description
            "Checking CU interface version information on the UP side state.";
          leaf instance {
            type enumeration {
              enum "master" {
                value 0;
                description "Master type.";
              }
              enum "slave" {
                value 1;
                description "Slave type.";
              }
              enum "no-disaster-environment" {
                value 255;
                description
                  "Not disaster environment.";
              }
            }
            description
              "UP connect with multiple CP.";
          }

          leaf cp-version {
            type string {
              length "1..7";
            }
            description
              "CP version information.";
          }

          leaf up-version {
            type string {
              length "1..7";
            }
            description
              "UP version information.";
          }

          leaf negotiation-result {
            type string {
              length "1..15";
            }
            description
              "Negotiation result.";
          }
        }  // list up-version
      }  // container up-versions

      container disaster-recoverys {
        config false;
        description
          "List of disaster recovery configurations on a vBRAS-UP.";
        list disaster-recovery {
          key "cp-address";
          description
            "Display disaster recovery configurations on a vBRAS-UP statistics.";
          leaf cp-address {
            type inet:ipv4-address-no-zone;
            description
              "Source IP address used to establish a connection between the vBRAS-CP and vBRAS-UP.";
          }

          leaf master-address {
            type inet:ipv4-address-no-zone;
            description
              "IP address of the master vBRAS-CP.";
          }

          leaf slave-address {
            type inet:ipv4-address-no-zone;
            description
              "IP address of the backup vBRAS-CP.";
          }

          leaf openflow-address {
            type inet:ipv4-address-no-zone;
            description
              "IP address of an control channel.";
          }

          leaf vxlan-address {
            type inet:ipv4-address-no-zone;
            description
              "IP address of a protocol channel.";
          }

          leaf priority {
            type uint32;
            description
              "Priority of the vBRAS-CP master/backup role.";
          }

          leaf negotiation-master-address {
            type inet:ipv4-address-no-zone;
            description
              "Negotiation result IP address of the master vBRAS-CP.";
          }

          leaf negotiation-slave-address {
            type inet:ipv4-address-no-zone;
            description
              "Negotiation result IP address of the backup vBRAS-CP.";
          }
        }  // list disaster-recovery
      }  // container disaster-recoverys
    }  // container bras-cu-agent

    augment /ifm:ifm/ifm:interfaces/ifm:interface {
      description
        "Configure CU agent to interface model.";
      container cu-agent {
        description
          "Configure CU agent to interface model.";
        container up-ve-track {
          when
            "../../ifm:type = 'Virtual-Ethernet' and ../../ifm:class='main-interface'";
          description
            "Configure the UP VE port to track the status of the UP/CP channel (including CUSP and VXLAN).";
          leaf up-ve-track-tunnel-enable {
            type empty;
            description
              "Enable the UP VE port to track the status of the UP/CP channel (including CUSP and VXLAN).";
          }
        }  // container up-ve-track

        container cu-multicast-rbp {
          when
            "(../../ifm:type='Virtual-Ethernet' or
              ../../ifm:type='100GE' or
              ../../ifm:type='400GE' or
              ../../ifm:type='25GE' or
              ../../ifm:type='GigabitEthernet') and ../../ifm:class='main-interface'";
          description
            "Configure an RBP to a specified interface on a vBRAS-UP.";
          leaf name {
            type string {
              length "1..128";
            }
            must
              "/bras-cu-agent:bras-cu-agent/bras-cu-agent:cu-agent";
            must
              "(../../../ifm:type='Virtual-Ethernet' and ../../../fim-ifm:ve-group/fim-ifm:type='L3VE') or ../../../ifm:type!='Virtual-Ethernet'";
            description
              "Bind an RBP to a specified interface on a vBRAS-UP.";
          }
        }  // container cu-multicast-rbp

        container cu-mode-interface {
          config false;
          description
            "Operational state of the UP mode in the interface and report the interface to the vBRAS-CP for management.";
          leaf cu-mode-enable {
            type cu-mode-type;
            description
              "Enable/disable CU mode.";
          }

          leaf user-access-type {
            type cu-mode-access-type;
            description
              "Access type of a user.";
          }
        }  // container cu-mode-interface
      }  // container cu-agent
    }
  }  // module huawei-bras-cu-agent