module huawei-bgp-l2vpnad {

    yang-version 1;

    namespace
      "urn:huawei:yang:huawei-bgp-l2vpnad";

    prefix bgp-l2vpnad;

    import huawei-extension {
      prefix ext;
    }
    import huawei-network-instance {
      prefix ni;
    }
    import huawei-bgp {
      prefix bgp;
    }
    import huawei-routing-policy {
      prefix rtp;
    }
    import huawei-xpl {
      prefix xpl;
    }
    import huawei-bgp-routing-table {
      prefix bgp-rt;
    }

    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
      "Inter-AS routing protocol that exchanges Network Layer Reachability Information (NLRI) with other BGP systems.";

    revision "2020-08-30" {
      description
        "The YANG descriptions are modified according to new standards.";
      reference
        "Huawei private.";

    }

    revision "2019-03-22" {
      description "Initial revision.";
      reference
        "Huawei private.";

    }

    ext:task-name "bgp";

    grouping l2vpnad-cap-type {
      description
        "The l2vpnad-cap-type configuration.";
      leaf vpls-ad-disable {
        type boolean;
        default "false";
        description
          "Enable/disable virtual private LAN service auto-discovery.not receive BGP-AD route.";
      }

      leaf vpws-enable {
        type boolean;
        default "false";
        description
          "Enable/disable virtual private wire services.";
      }

      leaf vpls-enable {
        type boolean;
        default "false";
        description
          "Enable/disable virtual private LAN services.";
      }
    }  // grouping l2vpnad-cap-type

    augment /ni:network-instance/ni:instances/ni:instance/bgp:bgp/bgp:base-process/bgp:afs/bgp:af {
      description
        "BGP l2vpnad address family configuration.";
      container l2vpnad {
        when "../bgp:type='l2vpnad'";
        description
          "Configure l2vpn-ad-family options.";
        container common {
          description
            "Configure l2vpn-ad-family common options.";
          uses bgp:vpn-target-type;

          uses l2vpnad-cap-type;

          leaf multi-homing-nonstand {
            type boolean;
            default "false";
            description
              "Enable/disable capability of multi-homing for virtual private LAN services.";
          }

          leaf vpn-orf-enable {
            type boolean;
            default "false";
            description
              "Enable/disable vpn-orf capability.";
          }

          leaf route-select-delay {
            type uint16 {
              range "0..3600";
            }
            units "s";
            default "0";
            description
              "Route selection delay.";
          }

          leaf reflect-change-path {
            type boolean;
            default "false";
            description
              "Enable/disable an RR to use an export policy to change route AS_Path.";
          }

          leaf reflect-between-client {
            type boolean;
            default "true";
            description
              "Enable/disable route reflection between clients. If clients of a route reflector (RR) are fully meshed, you can disable route reflection among clients to reduce the cost.";
          }

          uses bgp:reflector-cluster-type;

          leaf default-local-preference {
            type uint32 {
              range "0..4294967295";
            }
            default "100";
            description
              "The local preference of BGP routes.";
          }

          uses bgp:bestroute-router-id-prior-clusterlist-type;

          leaf tunnel-selector-name {
            type leafref {
              path "/rtp:routing-policy/rtp:tunnel-selectors/rtp:tunnel-selector/rtp:name";
            }
            description
              "Configure a tunnel selector. Applying it to the BGP IPv4 unicast, BGP VPNv4 address families, BGP VPNv6 address families and BGP L2VPN AD address family so that IPv4,VPNv4,VPNv6 and L2VPN AD labeled routes can be iterated to tunnels based on the tunnel selector. By default, no tunnel selector is configured.";
          }

          uses bgp:route-reflector-ext-community-filter-type;

          leaf nexthop-select-depend-type {
            type bgp:select-depend-type;
            default "depend-ip";
            description
              "Specify the route iteration mode: IP or tunnel. In tunnel mode, the labeled BGP IPv4 route can participate in route selection only after its next hop is iterated to an LSP. In IP 
            mode, the labeled BGP IPv4 route can participate in route selection only after its next hop is iterated to an IP address. By default, the labeled BGP IPv4 route can participate in route selection 
            if its next hop can be iterated to an IP address, regardless of whether the LSP of the next hop exists. This allows the RR that is not enabled with MPLS to forward labeled routes. In non-RR 
            networking or RR networking where the BGP next hop is changed, BGP needs to check whether there is an LSP destined for the next hop. If such an LSP is not found, BGP needs to establish an LSP in 
            advance. If the default setting is adopted, a labeled BGP IPv4 unicast route may be selected prior to LSP establishment. As a result, services are incorrectly switched before LSP establishment and 
            service stability is affected. Therefore, allow route selection only after the labeled BGP IPv4 route is iterated to an LSP.";
          }
        }  // container common

        uses bgp:slow-peer-type;
      }  // container l2vpnad
    }

    augment /ni:network-instance/ni:instances/ni:instance/bgp:bgp/bgp:base-process/bgp:peer-groups/bgp:peer-group/bgp:afs/bgp:af {
      description
        "BGP l2vpnad address family configuration.";
      container l2vpnad {
        when "../bgp:type='l2vpnad'";
        description
          "Configure l2vpn-ad-family options.";
        leaf advertise-community {
          type boolean;
          default "false";
          description
            "Enable/disable advertise the community attribute to a peer or a peer group.";
        }

        leaf reflect-client {
          when "../../../../bgp:type='ibgp'";
          type boolean;
          default "false";
          description
            "Enable/disable the local device as a route reflector (RR) and a peer or peer group as its client. This configuration is applicable between IBGP peers only. The configurations of RRs and its clients in an address family are valid only in this address family. Therefore, it is recommended to configure RRs and its clients in the specified address family that is required.";
        }

        leaf allow-as-loop {
          type uint32 {
            range "1..10";
          }
          description
            "Allow repetitive local AS numbers. By default, repetitive local AS numbers are not allowed.";
        }

        uses l2vpnad-cap-type;

        leaf nexthop-configure {
          type bgp:nexthop-configuration-type;
          description
            "Both the next-hop-local mode and next-hop-invariable mode are available when the peer address family is the VPNv4/VPNv6/L2VPN AD address family. Only the next-hop-local mode is available when the peer address family is not VPNv4/VPNV6/L2VPN AD address family. In next-hop-local mode, you can configure a BGP speaker to set its IP address of as the next hop of the routes to be advertised to IBGP peers or IBGP peer groups. In next-hop-invariable mode, you can configure PEs in different ASs not to change the next hop of routes when the PEs advertise the routes to their EBGP peers and use the next hop addresses of IGP routes to advertise imported IGP routes to IBGP peers. By default, when a BGP speaker advertises routes to EBGP peers and imported IGP routes to IBGP peers, the BGP speaker changes the next hop to its interface address.";
        }

        uses bgp:advertise-large-community-group-type;

        choice import-policy-type {
          description
            "Set route policy or filter.";
          case rtp-ref {
            description "Route policy.";
            leaf import-policy {
              type leafref {
                path "/rtp:routing-policy/rtp:policy-definitions/rtp:policy-definition/rtp:name";
              }
              description
                "Specify the filtering policy applied to the routes learned from a peer. By default, no such policy is specified.";
            }
          }  // case rtp-ref

          case xpl-ref {
            description "Route filter.";
            container import-filter {
              description
                "Configure an import route-filter to filter the routes received from peers. By default, no route-filter is specified to filter the routes imported from peers.";
              leaf name {
                type leafref {
                  path "/xpl:xpl/xpl:route-filters/xpl:route-filter/xpl:name";
                }
                description
                  "Specify an import route-filter name.";
              }

              leaf parameter {
                when "../name";
                type xpl:filter-parameter-type;
                description
                  "Specify an import route-filter parameter.";
              }
            }  // container import-filter
          }  // case xpl-ref
        }  // choice import-policy-type

        choice export-policy-type {
          description
            "Set route policy or filter.";
          case rtp-ref {
            description "Route policy.";
            leaf export-policy {
              type leafref {
                path "/rtp:routing-policy/rtp:policy-definitions/rtp:policy-definition/rtp:name";
              }
              description
                "Specify the filtering policy applied to the routes to be advertised to a peer. By default, no such policy is specified.";
            }
          }  // case rtp-ref

          case xpl-ref {
            description "Route filter.";
            container export-filter {
              description
                "Configure an export route-filter to filter the routes to be advertised to peers. By default, no route-filter is specified to filter the routes to be advertised to peers.";
              leaf name {
                type leafref {
                  path "/xpl:xpl/xpl:route-filters/xpl:route-filter/xpl:name";
                }
                description
                  "Specify an export route-filter name.";
              }

              leaf parameter {
                when "../name";
                type xpl:filter-parameter-type;
                description
                  "Specify an export route-filter parameter.";
              }
            }  // container export-filter
          }  // case xpl-ref
        }  // choice export-policy-type

        uses bgp:rt-update-interval-type;

        uses bgp:preferred-value-type;

        uses bgp:group-independent-peer-group-type;

        uses bgp:route-limit-type;

        uses bgp:public-as-only-type;

        uses bgp:group-public-as-only-import-type;
      }  // container l2vpnad
    }

    augment /ni:network-instance/ni:instances/ni:instance/bgp:bgp/bgp:base-process/bgp:peers/bgp:peer/bgp:afs/bgp:af {
      description
        "BGP l2vpnad address family configuration.";
      container l2vpnad {
        when "../bgp:type='l2vpnad'";
        description
          "Configure l2vpn-ad-family options.";
        leaf group-name {
          ext:operation-exclude "update" {
            description "The node cannot be modified, when the peer already belongs to a peer-group.";
          }
          type leafref {
            path "../../../../../../bgp:peer-groups/bgp:peer-group/bgp:name";
          }
          must
            "../../../../../../bgp:peer-groups/bgp:peer-group[bgp:name = current()]/bgp:afs/bgp:af[bgp:type='l2vpnad']";
          must
            "../../../../../../bgp:peer-groups/bgp:peer-group[bgp:name = current()]/bgp:peer-establish-mode = 'static'";
          description
            "Configure a name for a peer group. After a peer is deleted from the peer group, the peer is disabled from the address family. The object cannot be modified.";
        }

        leaf advertise-community {
          type boolean;
          default "false";
          description
            "Enable/disable advertise the community attribute to a peer or a peer group.";
        }

        leaf reflect-client {
          type boolean;
          default "false";
          description
            "Enable/disable the local device as a route reflector (RR) and a peer or peer group as its client. This configuration is applicable between IBGP peers only. The configurations of RRs and its clients in an address family are valid only in this address family. Therefore, it is recommended to configure RRs and its clients in the specified address family that is required.";
        }

        leaf allow-as-loop {
          type uint32 {
            range "1..10";
          }
          description
            "Allow repetitive local AS numbers. By default, repetitive local AS numbers are not allowed.";
        }

        uses l2vpnad-cap-type;

        leaf nexthop-configure {
          type bgp:nexthop-configuration-type;
          description
            "Both the next-hop-local mode and next-hop-invariable mode are available when the peer address family is the VPNv4/VPNV6/L2VPN AD address family. Only the next-hop-local mode is available when the peer address family is not VPNv4/VPNV6/L2VPN AD address family. In next-hop-local mode, you can configure a BGP speaker to set its IP address of as the next hop of the routes to be advertised to IBGP peers or IBGP peer groups. In next-hop-invariable mode, you can configure PEs in different ASs not to change the next hop of routes when the PEs advertise the routes to their EBGP peers and use the next hop addresses of IGP routes to advertise imported IGP routes to IBGP peers. By default, when a BGP speaker advertises routes to EBGP peers and imported IGP routes to IBGP peers, the BGP speaker changes the next hop to its interface address.";
        }

        uses bgp:advertise-large-community-type;

        choice import-policy-type {
          description
            "Set route policy or filter.";
          case rtp-ref {
            description "Route policy.";
            leaf import-policy {
              type leafref {
                path "/rtp:routing-policy/rtp:policy-definitions/rtp:policy-definition/rtp:name";
              }
              description
                "Specify the filtering policy applied to the routes learned from a peer. By default, no such policy is specified.";
            }
          }  // case rtp-ref

          case xpl-ref {
            description "Route filter.";
            container import-filter {
              description
                "Configure an import route-filter to filter the routes received from peers. By default, no route-filter is specified to filter the routes imported from peers.";
              leaf name {
                type leafref {
                  path "/xpl:xpl/xpl:route-filters/xpl:route-filter/xpl:name";
                }
                description
                  "Specify an import route-filter name.";
              }

              leaf parameter {
                when "../name";
                type xpl:filter-parameter-type;
                description
                  "Specify an import route-filter parameter.";
              }
            }  // container import-filter
          }  // case xpl-ref
        }  // choice import-policy-type

        choice export-policy-type {
          description
            "Set route policy or filter.";
          case rtp-ref {
            description "Route policy.";
            leaf export-policy {
              type leafref {
                path "/rtp:routing-policy/rtp:policy-definitions/rtp:policy-definition/rtp:name";
              }
              description
                "Specify the filtering policy applied to the routes to be advertised to a peer. By default, no such policy is specified.";
            }
          }  // case rtp-ref

          case xpl-ref {
            description "Route filter.";
            container export-filter {
              description
                "Configure an export route-filter to filter the routes to be advertised to peers. By default, no route-filter is specified to filter the routes to be advertised to peers.";
              leaf name {
                type leafref {
                  path "/xpl:xpl/xpl:route-filters/xpl:route-filter/xpl:name";
                }
                description
                  "Specify an export route-filter name.";
              }

              leaf parameter {
                when "../name";
                type xpl:filter-parameter-type;
                description
                  "Specify an export route-filter parameter.";
              }
            }  // container export-filter
          }  // case xpl-ref
        }  // choice export-policy-type

        uses bgp:rt-update-interval-type;

        uses bgp:preferred-value-type;

        uses bgp:peer-independent-peer-group-type;

        uses bgp:route-limit-type;

        uses bgp:public-as-only-type;

        uses bgp:peer-public-as-only-import-type;

        uses bgp:path-attr-map-type;
      }  // container l2vpnad
    }

    augment /bgp:bgp/bgp:base-process/bgp-rt:bgp-route {
      description
        "BGP l2vpnad address family routes information.";
      container l2vpnad {
        config false;
        description
          "Statistics of L2VPN AD routes.";
        container statistic {
          description
            "Statistics of BGP routes information of L2VPN AD address family.";
          uses bgp-rt:route-total-st-type;
        }  // container statistic
      }  // container l2vpnad
    }
  }  // module huawei-bgp-l2vpnad