diff --git a/python/protos/openolt.proto b/python/protos/openolt.proto
new file mode 100644
index 0000000..f6c1da1
--- /dev/null
+++ b/python/protos/openolt.proto
@@ -0,0 +1,453 @@
+// Copyright (c) 2018 Open Networking Foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at:
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+option go_package = "github.com/opencord/voltha-go/protos/voltha";
+
+package voltha;
+
+import "google/api/annotations.proto";
+import "openflow_13.proto";
+
+
+
+service Openolt {
+
+    rpc DisableOlt(Empty) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/Disable"
+          body: "*"
+        };
+    }
+
+    rpc ReenableOlt(Empty) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/Reenable"
+          body: "*"
+        };
+    }
+
+    rpc ActivateOnu(Onu) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/EnableOnu"
+          body: "*"
+        };
+    }
+
+    rpc DeactivateOnu(Onu) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/DisableOnu"
+          body: "*"
+        };
+    }
+
+    rpc DeleteOnu(Onu) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/DeleteOnu"
+          body: "*"
+        };
+    }
+
+    rpc OmciMsgOut(OmciMsg) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/OmciMsgOut"
+          body: "*"
+        };
+    }
+
+    rpc OnuPacketOut(OnuPacket) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/OnuPacketOut"
+          body: "*"
+        };
+    }
+
+    rpc UplinkPacketOut(UplinkPacket) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/UplinkPacketOut"
+          body: "*"
+        };
+    }
+
+    rpc FlowAdd(Flow) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/FlowAdd"
+          body: "*"
+        };
+    }
+
+    rpc FlowRemove(Flow) returns (Empty) {
+        option (google.api.http) = {
+          post: "/v1/FlowRemove"
+          body: "*"
+        };
+    }
+
+    rpc HeartbeatCheck(Empty) returns (Heartbeat) {
+        option (google.api.http) = {
+          post: "/v1/HeartbeatCheck"
+          body: "*"
+        };
+    }
+
+    rpc EnablePonIf(Interface) returns (Empty) {
+        option (google.api.http) = {
+            post: "/v1/EnablePonIf"
+            body: "*"
+        };
+    }
+
+    rpc DisablePonIf(Interface) returns (Empty) {
+        option (google.api.http) = {
+            post: "/v1/DisablePonIf"
+            body: "*"
+        };
+    }
+
+    rpc GetDeviceInfo(Empty) returns (DeviceInfo) {
+        option (google.api.http) = {
+            post: "/v1/GetDeviceInfo"
+            body: "*"
+        };
+    }
+
+    rpc Reboot(Empty) returns (Empty) {
+         option (google.api.http) = {
+            post: "/v1/Reboot"
+            body: "*"
+        };
+    }
+
+    rpc CollectStatistics(Empty) returns (Empty) {
+        option (google.api.http) = {
+            post: "/v1/CollectStatistics"
+            body: "*"
+        };
+    }
+
+    rpc EnableIndication(Empty) returns (stream Indication) {}
+}
+
+message Indication {
+    oneof data {
+        OltIndication olt_ind = 1;
+        IntfIndication intf_ind = 2;
+        IntfOperIndication intf_oper_ind = 3;
+        OnuDiscIndication onu_disc_ind = 4;
+        OnuIndication onu_ind = 5;
+        OmciIndication omci_ind = 6;
+        PacketIndication pkt_ind = 7;
+        PortStatistics port_stats = 8;
+        FlowStatistics flow_stats = 9;
+        AlarmIndication alarm_ind= 10;
+    }
+}
+
+message AlarmIndication {
+    oneof data {
+        LosIndication los_ind = 1;
+        DyingGaspIndication dying_gasp_ind = 2;
+        OnuAlarmIndication onu_alarm_ind = 3;
+        OnuStartupFailureIndication onu_startup_fail_ind = 4;
+        OnuSignalDegradeIndication onu_signal_degrade_ind = 5;
+        OnuDriftOfWindowIndication onu_drift_of_window_ind = 6;
+        OnuLossOfOmciChannelIndication onu_loss_omci_ind = 7;
+        OnuSignalsFailureIndication onu_signals_fail_ind = 8;
+        OnuTransmissionInterferenceWarning onu_tiwi_ind = 9;
+        OnuActivationFailureIndication onu_activation_fail_ind = 10;
+        OnuProcessingErrorIndication onu_processing_error_ind = 11;
+    }
+}
+
+message OltIndication {
+    string oper_state = 1;	// up, down
+}
+
+message IntfIndication {
+    fixed32 intf_id = 1;
+    string oper_state = 2;      // up, down
+}
+
+message OnuDiscIndication {
+    fixed32 intf_id = 1;
+    SerialNumber serial_number = 2;
+}
+
+message OnuIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string oper_state = 3;      // up, down
+    string admin_state = 5;     // up, down
+    SerialNumber serial_number = 4;
+}
+
+message IntfOperIndication {
+    string type = 1;		// nni, pon
+    fixed32 intf_id = 2;
+    string oper_state = 3;      // up, down
+}
+
+message OmciIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    bytes pkt = 3;
+}
+
+message PacketIndication {
+    string intf_type = 5;		// nni, pon, unknown
+    fixed32 intf_id = 1;
+    fixed32 gemport_id = 2;
+    fixed32 flow_id = 3;
+    bytes pkt = 4;
+}
+
+message Interface {
+    fixed32 intf_id = 1;
+}
+
+message Heartbeat {
+    fixed32 heartbeat_signature = 1;
+}
+
+message Onu {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    SerialNumber serial_number = 3;
+    fixed32 pir = 4;   // peak information rate assigned to onu
+    fixed32 alloc_id = 5;
+}
+
+message OmciMsg {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    bytes pkt = 3;
+}
+
+message OnuPacket {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    bytes pkt = 3;
+}
+
+message UplinkPacket {
+    fixed32 intf_id = 1;
+    bytes pkt = 2;
+}
+
+message DeviceInfo {
+    string vendor = 1;
+    string model = 2;
+    string hardware_version = 3;
+    string firmware_version = 4;
+
+    // Total number of pon intf ports on the device
+    fixed32 pon_ports = 12;
+
+    // If using global per-device technology profile. To be deprecated
+    string technology = 5;
+    fixed32 onu_id_start = 6;
+    fixed32 onu_id_end = 7;
+    fixed32 alloc_id_start = 8;
+    fixed32 alloc_id_end = 9;
+    fixed32 gemport_id_start = 10;
+    fixed32 gemport_id_end = 11;
+    fixed32 flow_id_start = 13;
+    fixed32 flow_id_end = 14;
+
+    message DeviceResourceRanges {
+
+        // List of 0 or more intf_ids that use the same technology and pools.
+        // If 0 intf_ids supplied, it implies ALL interfaces
+        repeated fixed32 intf_ids = 1;
+
+        // Technology profile for this pool
+        string technology = 2;
+
+        message Pool {
+            enum PoolType {
+                ONU_ID = 0;
+                ALLOC_ID = 1;
+                GEMPORT_ID = 2;
+                FLOW_ID = 3;
+            }
+
+            enum SharingType {
+                DEDICATED_PER_INTF = 0;
+                SHARED_BY_ALL_INTF_ALL_TECH = 1; // Shared across all interfaces in all technologies in all ranges
+                SHARED_BY_ALL_INTF_SAME_TECH = 2; // Shared across all interfaces of the same technology used in this range
+            }
+
+            PoolType type = 1;
+	    SharingType sharing = 2;
+	    fixed32 start = 3; // lower bound on IDs allocated from this pool
+	    fixed32 end = 4; // upper bound on IDs allocated from this pool
+	}
+        repeated Pool pools = 3;
+    }
+    repeated DeviceResourceRanges ranges = 15;
+}
+
+message Classifier {
+    fixed32 o_tpid = 1;
+    fixed32 o_vid = 2;
+    fixed32 i_tpid = 3;
+    fixed32 i_vid = 4;
+    fixed32 o_pbits = 5;
+    fixed32 i_pbits = 6;
+    fixed32 eth_type = 7;
+    bytes dst_mac = 8;
+    bytes src_mac = 9;
+    fixed32 ip_proto = 10;
+    fixed32 dst_ip = 11;
+    fixed32 src_ip = 12;
+    fixed32 src_port = 13;
+    fixed32 dst_port = 14;
+    string pkt_tag_type = 15;	// untagged, single_tag, double_tag
+}
+
+message ActionCmd {
+    bool add_outer_tag = 1;
+    bool remove_outer_tag = 2;
+    bool trap_to_host = 3;
+}
+
+message Action {
+    ActionCmd cmd = 1;
+    fixed32 o_vid = 2;
+    fixed32 o_pbits = 3;
+    fixed32 o_tpid = 4;
+    fixed32 i_vid = 5;
+    fixed32 i_pbits = 6;
+    fixed32 i_tpid = 7;
+}
+
+message Flow {
+    sfixed32 access_intf_id = 1;
+    sfixed32 onu_id = 2;
+    fixed32 flow_id = 3;
+    string flow_type = 4;	// upstream, downstream, broadcast, multicast
+    sfixed32 alloc_id = 10;
+    sfixed32 network_intf_id = 5;
+    sfixed32 gemport_id = 6;
+    Classifier classifier = 7;
+    Action action = 8;
+    sfixed32 priority = 9;
+}
+
+message SerialNumber {
+    bytes vendor_id = 1;
+    bytes vendor_specific = 2;
+}
+
+message PortStatistics {
+    fixed32 intf_id = 1;
+    fixed64 rx_bytes = 2;
+    fixed64 rx_packets = 3;
+    fixed64 rx_ucast_packets = 4;
+    fixed64 rx_mcast_packets = 5;
+    fixed64 rx_bcast_packets = 6;
+    fixed64 rx_error_packets = 7;
+    fixed64 tx_bytes = 8;
+    fixed64 tx_packets = 9;
+    fixed64 tx_ucast_packets = 10;
+    fixed64 tx_mcast_packets = 11;
+    fixed64 tx_bcast_packets = 12;
+    fixed64 tx_error_packets = 13;
+    fixed64 rx_crc_errors = 14;
+    fixed64 bip_errors = 15;
+    fixed32 timestamp = 16;
+}
+
+message FlowStatistics {
+    fixed32 flow_id = 1;
+    fixed64 rx_bytes = 2;
+    fixed64 rx_packets = 3;
+    fixed64 tx_bytes = 8;
+    fixed64 tx_packets = 9;
+    fixed32 timestamp = 16;
+}
+
+message LosIndication {
+    fixed32 intf_id = 1;
+    string status = 2;
+}
+
+message DyingGaspIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+}
+
+message OnuAlarmIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string los_status = 3;
+    string lob_status = 4;
+    string lopc_miss_status = 5;
+    string lopc_mic_error_status = 6;
+}
+
+message OnuStartupFailureIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+}
+
+message OnuSignalDegradeIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+    fixed32 inverse_bit_error_rate = 4;
+}
+
+message OnuDriftOfWindowIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+    fixed32 drift = 4;
+    fixed32 new_eqd = 5;
+}
+
+message OnuLossOfOmciChannelIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+}
+
+message OnuSignalsFailureIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+    fixed32 inverse_bit_error_rate = 4;
+}
+
+message OnuTransmissionInterferenceWarning {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+    string status = 3;
+    fixed32 drift = 4;
+}
+
+message OnuActivationFailureIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+}
+
+message OnuProcessingErrorIndication {
+    fixed32 intf_id = 1;
+    fixed32 onu_id = 2;
+}
+
+
+message Empty {}
diff --git a/python/protos/third_party/__init__.py b/python/protos/third_party/__init__.py
new file mode 100644
index 0000000..1767870
--- /dev/null
+++ b/python/protos/third_party/__init__.py
@@ -0,0 +1,53 @@
+#
+# Copyright 2017 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+"""
+This helps loading http_pb2 and annotations_pb2.
+Without this, the Python importer will not be able to process the lines:
+from google.api import http_pb2 or
+from google.api import annotations_pb2
+(Without importing these, the protobuf loader will not recognize http options
+in the protobuf definitions.)
+"""
+
+from importlib import import_module
+import os
+import sys
+
+
+class GoogleApiImporter(object):
+
+    def find_module(self, full_name, path=None):
+        if full_name == 'google.api':
+            self.path = [os.path.dirname(__file__)]
+            return self
+
+    def load_module(self, name):
+        if name in sys.modules:
+            return sys.modules[name]
+        full_name = 'python.protos.third_party.' + name
+        import_module(full_name)
+        module = sys.modules[full_name]
+        sys.modules[name] = module
+        return module
+
+
+sys.meta_path.append(GoogleApiImporter())
+try:
+    from google.api import http_pb2, annotations_pb2
+    _ = http_pb2, annotations_pb2
+except AssertionError:
+    pass
diff --git a/python/protos/third_party/google/LICENSE b/python/protos/third_party/google/LICENSE
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/python/protos/third_party/google/LICENSE
@@ -0,0 +1,201 @@
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+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/python/protos/third_party/google/__init__.py b/python/protos/third_party/google/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/python/protos/third_party/google/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/python/protos/third_party/google/api/__init__.py b/python/protos/third_party/google/api/__init__.py
new file mode 100644
index 0000000..b0fb0b2
--- /dev/null
+++ b/python/protos/third_party/google/api/__init__.py
@@ -0,0 +1,13 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
diff --git a/python/protos/third_party/google/api/annotations.desc b/python/protos/third_party/google/api/annotations.desc
new file mode 100644
index 0000000..4a4bd7d
--- /dev/null
+++ b/python/protos/third_party/google/api/annotations.desc
Binary files differ
diff --git a/python/protos/third_party/google/api/annotations.proto b/python/protos/third_party/google/api/annotations.proto
new file mode 100644
index 0000000..cbd18b8
--- /dev/null
+++ b/python/protos/third_party/google/api/annotations.proto
@@ -0,0 +1,29 @@
+// Copyright (c) 2015, Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.api;
+
+import "google/api/http.proto";
+import "google/protobuf/descriptor.proto";
+
+option java_multiple_files = true;
+option java_outer_classname = "AnnotationsProto";
+option java_package = "com.google.api";
+
+extend google.protobuf.MethodOptions {
+  // See `HttpRule`.
+  HttpRule http = 72295728;
+}
diff --git a/python/protos/third_party/google/api/http.proto b/python/protos/third_party/google/api/http.proto
new file mode 100644
index 0000000..ce07aa1
--- /dev/null
+++ b/python/protos/third_party/google/api/http.proto
@@ -0,0 +1,127 @@
+// Copyright (c) 2015, Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.api;
+
+option java_multiple_files = true;
+option java_outer_classname = "HttpProto";
+option java_package = "com.google.api";
+
+
+// `HttpRule` defines the mapping of an RPC method to one or more HTTP REST API
+// methods. The mapping determines what portions of the request message are
+// populated from the path, query parameters, or body of the HTTP request.  The
+// mapping is typically specified as an `google.api.http` annotation, see
+// "google/api/annotations.proto" for details.
+//
+// The mapping consists of a mandatory field specifying a path template and an
+// optional `body` field specifying what data is represented in the HTTP request
+// body. The field name for the path indicates the HTTP method. Example:
+//
+// ```
+// package google.storage.v2;
+//
+// import "google/api/annotations.proto";
+//
+// service Storage {
+//   rpc CreateObject(CreateObjectRequest) returns (Object) {
+//     option (google.api.http) {
+//       post: "/v2/{bucket_name=buckets/*}/objects"
+//       body: "object"
+//     };
+//   };
+// }
+// ```
+//
+// Here `bucket_name` and `object` bind to fields of the request message
+// `CreateObjectRequest`.
+//
+// The rules for mapping HTTP path, query parameters, and body fields
+// to the request message are as follows:
+//
+// 1. The `body` field specifies either `*` or a field path, or is
+//    omitted. If omitted, it assumes there is no HTTP body.
+// 2. Leaf fields (recursive expansion of nested messages in the
+//    request) can be classified into three types:
+//     (a) Matched in the URL template.
+//     (b) Covered by body (if body is `*`, everything except (a) fields;
+//         else everything under the body field)
+//     (c) All other fields.
+// 3. URL query parameters found in the HTTP request are mapped to (c) fields.
+// 4. Any body sent with an HTTP request can contain only (b) fields.
+//
+// The syntax of the path template is as follows:
+//
+//     Template = "/" Segments [ Verb ] ;
+//     Segments = Segment { "/" Segment } ;
+//     Segment  = "*" | "**" | LITERAL | Variable ;
+//     Variable = "{" FieldPath [ "=" Segments ] "}" ;
+//     FieldPath = IDENT { "." IDENT } ;
+//     Verb     = ":" LITERAL ;
+//
+// `*` matches a single path component, `**` zero or more path components, and
+// `LITERAL` a constant.  A `Variable` can match an entire path as specified
+// again by a template; this nested template must not contain further variables.
+// If no template is given with a variable, it matches a single path component.
+// The notation `{var}` is henceforth equivalent to `{var=*}`.
+//
+// Use CustomHttpPattern to specify any HTTP method that is not included in the
+// pattern field, such as HEAD, or "*" to leave the HTTP method unspecified for
+// a given URL path rule. The wild-card rule is useful for services that provide
+// content to Web (HTML) clients.
+message HttpRule {
+
+  // Determines the URL pattern is matched by this rules. This pattern can be
+  // used with any of the {get|put|post|delete|patch} methods. A custom method
+  // can be defined using the 'custom' field.
+  oneof pattern {
+    // Used for listing and getting information about resources.
+    string get = 2;
+
+    // Used for updating a resource.
+    string put = 3;
+
+    // Used for creating a resource.
+    string post = 4;
+
+    // Used for deleting a resource.
+    string delete = 5;
+
+    // Used for updating a resource.
+    string patch = 6;
+
+    // Custom pattern is used for defining custom verbs.
+    CustomHttpPattern custom = 8;
+  }
+
+  // The name of the request field whose value is mapped to the HTTP body, or
+  // `*` for mapping all fields not captured by the path pattern to the HTTP
+  // body.
+  string body = 7;
+
+  // Additional HTTP bindings for the selector. Nested bindings must not
+  // specify a selector and must not contain additional bindings.
+  repeated HttpRule additional_bindings = 11;
+}
+
+// A custom pattern is used for defining custom HTTP verb.
+message CustomHttpPattern {
+  // The name of this custom HTTP verb.
+  string kind = 1;
+
+  // The path matched by this custom verb.
+  string path = 2;
+}