diff --git a/models/demo/BUCK b/models/demo/BUCK
new file mode 100644
index 0000000..6b4456a
--- /dev/null
+++ b/models/demo/BUCK
@@ -0,0 +1,57 @@
+COMPILE_DEPS = [
+  '//lib:CORE_DEPS',
+]
+
+
+# The following will be wrapped into a macro to be used something like this:
+#
+# yang_model (
+#   app_name = 'org.onosproject.models.foobar',
+#   title = 'Demo YANG Model',
+#   url = 'http://onosproject.org',
+# )
+
+
+YANG_TOOLS = [
+  '//apps/yang:onos-apps-yang',
+  '//lib:onos-yang-runtime',
+]
+
+yang_library(
+  name = 'yang',
+  srcs = glob(['src/**/*.yang']),
+)
+
+genrule(
+  name = 'schema',
+  srcs = [ ':yang#srcs' ],
+  cmd = '$(location //buck-tools:yang-schema) $OUT $SRCS',
+  out = 'yang'
+)
+
+genrule(
+  name = 'registrator',
+  srcs = glob(['src/**/*.yang']),
+  cmd = '$(location //buck-tools:yang-registrator) $OUT org.onosproject.models.demo $SRCS',
+  out = 'YangModelRegistrator.java'
+)
+
+osgi_jar(
+  name = 'onos-models-demo',
+  # srcs = [ ':registrator' ],
+  srcs = [ ':yang#srcs', ':registrator' ],
+  deps = COMPILE_DEPS + YANG_TOOLS,
+  resources = [ ':schema' ],
+  resources_root = ".",
+  do_checkstyle = False,
+  do_javadocs = False,
+)
+
+onos_app (
+  app_name = 'org.onosproject.models.demo',
+  title = 'Demo YANG Model',
+  category = 'Model',
+  url = 'http://onosproject.org',
+  description = 'Demo YANG model extension.',
+  required_apps = [ 'org.onosproject.yang' ],
+)
diff --git a/models/demo/src/ne-l3vpn-api.yang b/models/demo/src/ne-l3vpn-api.yang
new file mode 100644
index 0000000..5b0181c
--- /dev/null
+++ b/models/demo/src/ne-l3vpn-api.yang
@@ -0,0 +1,82 @@
+/*
+WARNING:
+This yang model is just for fuction ONOS opensource project demo purpose only,
+And is subject to change in future, Huawei does not commit provide compatibilty
+in commercial product.
+*/
+module ne-l3vpn-api {
+    namespace "ne-l3vpn-api";
+    prefix l3vpn-api;
+    import ne-l3vpncomm-type {
+        prefix l3vpncomm-type;
+    }
+    import ne-l3vpncomm {
+        prefix l3vpncomm;
+    }
+    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 "VRP V800R010 Schema";
+    revision "2014-12-25" {
+        reference "Huawei VRPV8 Schema";
+    }
+    container devices {
+        list device {
+            key deviceid;
+            leaf deviceid {
+                type string;
+            }
+            container l3vpn {
+                container l3vpncomm {
+                    container l3vpnInstances {
+                    description "";
+                        list l3vpnInstance {
+                            key "vrfName";
+                            leaf vrfName {
+                                type string;
+                            }
+                            leaf vrfDescription {
+                                type string;
+                            }
+                            uses l3vpncomm:l3vpnIfs;
+                            container vpnInstAFs {
+                                description "";
+                                list vpnInstAF {
+                                    key "afType";
+                                    description "Address family";
+                                    leaf afType {
+                                        type "l3vpncomm-type:l3vpncommonL3vpnPrefixType";
+                                        description "Address family";
+                                    }
+                                    leaf vrfRD {
+                                        when "vrfName != '_public_'";
+                                        type "string";
+                                        description "route-distinguisher.";
+                                    }
+                                    container vpnTargets {
+                                        description "";
+                                        list vpnTarget {
+                                            must "vrfName != '_public_' and vpnTarget = '0'";
+                                            key "vrfRTValue vrfRTType";
+                                            description "L3vpn vpntarget configure class";
+                                            leaf vrfRTValue {
+                                                type "string";
+                                            }
+                                            leaf vrfRTType {
+                                                type "l3vpncomm-type:l3vpncommonVrfRtType";
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/models/demo/src/ne-l3vpncomm-type.yang b/models/demo/src/ne-l3vpncomm-type.yang
new file mode 100644
index 0000000..3e4e10c
--- /dev/null
+++ b/models/demo/src/ne-l3vpncomm-type.yang
@@ -0,0 +1,54 @@
+/*
+WARNING:
+This yang model is just for fuction ONOS opensource project demo purpose only,
+And is subject to change in future, Huawei does not commit provide compatibilty
+in commercial product.
+*/
+module ne-l3vpncomm-type {
+    namespace "l3vpn-comm-type";
+    prefix l3vpncomm-type;
+    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 "";
+    revision "2014-12-25" {
+        description "Initial version";
+    }
+    typedef l3vpncommonL3vpnPrefixType {
+        type enumeration {
+            enum "ipv4uni" {
+                value 0;
+                description "ipv4uni:";
+            }
+            enum "ipv6uni" {
+                value 1;
+                description "ipv6uni:";
+            }
+        }
+        description "";
+        }
+        typedef l3vpncommonVrfRtType {
+            type enumeration {
+                enum "export_extcommunity" {
+                    value 0;
+                    description "export-extcommunity:";
+                }
+                enum "import_extcommunity" {
+                    value 1;
+                    description "import-extcommunity:";
+                }
+            }
+            description "";
+        }
+        typedef ipv4Address {
+        type string {
+            length "0..255";
+            pattern "((([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}
+            ([1-9]?[0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5]))";
+        }
+    }
+}
diff --git a/models/demo/src/ne-l3vpncomm.yang b/models/demo/src/ne-l3vpncomm.yang
new file mode 100644
index 0000000..b03c382
--- /dev/null
+++ b/models/demo/src/ne-l3vpncomm.yang
@@ -0,0 +1,49 @@
+/*
+WARNING:
+This yang model is just for fuction ONOS opensource project demo purpose only,
+And is subject to change in future, Huawei does not commit provide compatibilty
+in commercial product.
+*/
+module ne-l3vpncomm {
+    namespace "ne-l3vpn-comm";
+    prefix "l3vpncomm";
+    import ne-l3vpncomm-type {
+        prefix l3vpncomm-type;
+    }
+    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 "";
+    revision "2014-12-25" {
+        description "Initial version";
+    }
+    grouping l3vpnIfs {
+        container l3vpnIfs {
+        description "";
+            list l3vpnIf {
+                key "ifName";
+                description "interface Name.";
+                leaf ifName {
+                    type string;
+                    description "interface Name";
+                }
+                leaf ipv4Addr {
+                    when "subnetMask != null";
+                    mandatory "true";
+                    type "l3vpncomm-type:ipv4Address";
+                    description "Interface Address.";
+                }
+                leaf subnetMask {
+                    when "ipv4Addr != null";
+                    mandatory "true";
+                    type "l3vpncomm-type:ipv4Address";
+                    description "Interface address mask.";
+                }
+            }
+        }
+    }
+}