diff --git a/protos/Makefile b/protos/Makefile
index 6ee661b..7f2c78c 100644
--- a/protos/Makefile
+++ b/protos/Makefile
@@ -14,18 +14,27 @@
 
 HOST_SYSTEM = $(shell uname | cut -f 1 -d_)
 SYSTEM ?= $(HOST_SYSTEM)
+
+# OpenOLT Proto version.
+# This specifies the GIT tag in https://github.com/opencord/voltha-protos
+# repo that we need to refer to, to pick the right version of
+# openolt.proto and tech_profile.proto
+OPENOLT_PROTO_VER ?= v1.0.3
+
 CXX ?= g++
 #powerpc64-fsl-linux-g++
-CPPFLAGS += `pkg-config --cflags protobuf grpc` -I googleapis/gens
+CPPFLAGS += `pkg-config --cflags protobuf grpc` -I googleapis/gens -I./
 CXXFLAGS += -std=c++11
 #LDFLAGS += -L/usr/local/lib `pkg-config --libs protobuf grpc++ grpc` -ldl
 PROTOC = protoc
 GRPC_CPP_PLUGIN = grpc_cpp_plugin
 GRPC_CPP_PLUGIN_PATH ?= `which $(GRPC_CPP_PLUGIN)`
 
-OBJS = tech_profile.pb.o tech_profile.grpc.pb.o openolt.pb.o openolt.grpc.pb.o ./googleapis/gens/google/api/annotations.grpc.pb.o ./googleapis/gens/google/api/annotations.pb.o ./googleapis/gens/google/api/http.pb.o
+OBJS = voltha_protos/tech_profile.pb.o voltha_protos/tech_profile.grpc.pb.o voltha_protos/openolt.pb.o voltha_protos/openolt.grpc.pb.o ./googleapis/gens/google/api/annotations.grpc.pb.o ./googleapis/gens/google/api/annotations.pb.o ./googleapis/gens/google/api/http.pb.o
 
-all: googleapis libopenoltapi.a
+.DEFAULT_GOAL := all
+
+all: googleapis get_openolt_proto libopenoltapi.a
 
 libopenoltapi.a: $(OBJS)
 	ar cr $@ $^
@@ -40,16 +49,27 @@
 		make -C googleapis LANGUAGE=cpp GRPCPLUGIN=$(GRPC_CPP_PLUGIN_PATH) all; \
 	fi;
 
-.PRECIOUS: %.grpc.pb.cc
-%.grpc.pb.cc: %.proto
+get_openolt_proto:
+	if [ ! -e "voltha_protos" ]; then \
+		mkdir voltha_protos; \
+	fi;\
+	if [ ! -e "voltha_protos/openolt.proto" ]; then \
+		wget -O voltha_protos/openolt.proto https://raw.githubusercontent.com/opencord/voltha-protos/$(OPENOLT_PROTO_VER)/protos/voltha_protos/openolt.proto; \
+	fi; \
+	if [ ! -e "tech_profile.proto" ]; then \
+		wget -O voltha_protos/tech_profile.proto https://raw.githubusercontent.com/opencord/voltha-protos/$(OPENOLT_PROTO_VER)/protos/voltha_protos/tech_profile.proto; \
+	fi;
+
+.PRECIOUS: voltha_protos/%.grpc.pb.cc
+voltha_protos/%.grpc.pb.cc: voltha_protos/%.proto
 	$(PROTOC) --proto_path=. -I./googleapis --grpc_out=. --plugin=protoc-gen-grpc=$(GRPC_CPP_PLUGIN_PATH) $<
 
-.PRECIOUS: %.pb.cc
-%.pb.cc: %.proto
-	$(PROTOC) --proto_path=. -I./googleapis --cpp_out=. $<
+.PRECIOUS: voltha_protos/%.pb.cc
+voltha_protos/%.pb.cc: voltha_protos/%.proto
+	$(PROTOC) --proto_path=. -I./googleapis -I./ --cpp_out=. $<
 
 clean:
-	rm -f *.o *.pb.cc *.pb.h *.a
+	rm *.a && cd voltha_protos/ && rm -f *.o *.pb.cc *.pb.h
 
 distclean: clean
 	rm -rf googleapis
diff --git a/protos/openolt.proto b/protos/openolt.proto
deleted file mode 100644
index f87d8a4..0000000
--- a/protos/openolt.proto
+++ /dev/null
@@ -1,486 +0,0 @@
-// 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";
-package openolt;
-import "google/api/annotations.proto";
-import "tech_profile.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 CreateTrafficSchedulers(tech_profile.TrafficSchedulers) returns (Empty) {
-        option (google.api.http) = {
-            post: "/v1/CreateTrafficSchedulers"
-            body: "*"
-        };
-    }
-
-    rpc RemoveTrafficSchedulers(tech_profile.TrafficSchedulers) returns (Empty) {
-        option (google.api.http) = {
-            post: "/v1/RemoveTrafficSchedulers"
-            body: "*"
-        };
-    }
-
-    rpc CreateTrafficQueues(tech_profile.TrafficQueues) returns (Empty) {
-        option (google.api.http) = {
-            post: "/v1/CreateTrafficQueues"
-            body: "*"
-        };
-    }
-
-    rpc RemoveTrafficQueues(tech_profile.TrafficQueues) returns (Empty) {
-        option (google.api.http) = {
-            post: "/v1/RemoveTrafficQueues"
-            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;
-    fixed32 port_no = 6;
-    fixed64 cookie = 7;
-    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
-}
-
-message OmciMsg {
-    fixed32 intf_id = 1;
-    fixed32 onu_id = 2;
-    bytes pkt = 3;
-}
-
-message OnuPacket {
-    fixed32 intf_id = 1;
-    fixed32 onu_id = 2;
-    fixed32 port_no = 4;
-    fixed32 gemport_id = 5;
-    bytes pkt = 3;
-}
-
-message UplinkPacket {
-    fixed32 intf_id = 1;
-    bytes pkt = 2;
-    fixed32 flow_id = 3;
-}
-
-message DeviceInfo {
-    string vendor = 1;
-    string model = 2;
-    string hardware_version = 3;
-    string firmware_version = 4;
-    string device_id = 16;
-    string device_serial_number = 17;
-
-    // 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;
-    sfixed32 uni_id = 11;
-    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;
-    fixed64 cookie = 12; // must be provided for any flow with trap_to_host action. Returned in PacketIndication
-    fixed32 port_no = 13; // must be provided for any flow with trap_to_host action. Returned in PacketIndication
-}
-
-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;
-    fixed32 fail_reason = 3;
-}
-
-message OnuProcessingErrorIndication {
-    fixed32 intf_id = 1;
-    fixed32 onu_id = 2;
-}
-
-message Empty {}
-
diff --git a/protos/tech_profile.proto b/protos/tech_profile.proto
deleted file mode 100644
index 1b98e2d..0000000
--- a/protos/tech_profile.proto
+++ /dev/null
@@ -1,126 +0,0 @@
-// 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";
-package tech_profile;
-import "google/api/annotations.proto";
-
-enum Direction {
-    UPSTREAM = 0;
-    DOWNSTREAM = 1;
-    BIDIRECTIONAL = 2;
-}
-
-enum SchedulingPolicy {
-    WRR = 0;
-    StrictPriority = 1;
-    Hybrid = 2;
-}
-
-enum AdditionalBW {
-    AdditionalBW_None = 0;
-    AdditionalBW_NA = 1;
-    AdditionalBW_BestEffort = 2;
-    AdditionalBW_Auto = 3;
-}
-
-enum DiscardPolicy {
-    TailDrop = 0;
-    WTailDrop = 1;
-    Red = 2;
-    WRed = 3;
-}
-
-enum InferredAdditionBWIndication {
-    InferredAdditionBWIndication_None = 0;
-    InferredAdditionBWIndication_Assured = 1;
-    InferredAdditionBWIndication_BestEffort = 2;
-}
-
-message SchedulerConfig {
-    Direction direction = 1;
-    AdditionalBW additional_bw = 2; // Valid on for “direction == Upstream”.
-    fixed32 priority = 3;
-    fixed32 weight = 4;
-    SchedulingPolicy sched_policy = 5;
-}
-
-message TrafficShapingInfo {
-    fixed32 cir = 1;
-    fixed32 cbs = 2;
-    fixed32 pir = 3;
-    fixed32 pbs = 4;
-    fixed32 gir = 5; // only if “direction == Upstream ”
-    InferredAdditionBWIndication add_bw_ind = 6; // only if “direction == Upstream”
-}
-
-message TrafficScheduler {
-    Direction direction = 1;
-    fixed32 alloc_id = 2; // valid only if “direction == Upstream ”
-    SchedulerConfig scheduler = 3;
-    TrafficShapingInfo traffic_shaping_info = 4;
-}
-
-message TrafficSchedulers {
-    fixed32 intf_id = 1;
-    fixed32 onu_id = 2;
-    fixed32 uni_id = 4;
-    fixed32 port_no = 5;
-    repeated TrafficScheduler traffic_scheds = 3;
-}
-
-message TailDropDiscardConfig {
-    fixed32 queue_size = 1;
-}
-
-message RedDiscardConfig {
-    fixed32 min_threshold = 1;
-    fixed32 max_threshold = 2;
-    fixed32 max_probability = 3;
-}
-
-message WRedDiscardConfig {
-    RedDiscardConfig green = 1;
-    RedDiscardConfig yellow = 2;
-    RedDiscardConfig red = 3;
-}
-
-message DiscardConfig {
-    DiscardPolicy discard_policy = 1;
-    oneof discard_config {
-        TailDropDiscardConfig tail_drop_discard_config = 2;
-        RedDiscardConfig red_discard_config = 3;
-        WRedDiscardConfig wred_discard_config = 4;
-    }
-}
-
-message TrafficQueue {
-    Direction direction = 1;
-    fixed32 gemport_id = 2;
-    string pbit_map = 3;
-    bool aes_encryption = 4;
-    SchedulingPolicy sched_policy = 5;
-    fixed32 priority = 6;
-    fixed32 weight = 7;
-    DiscardPolicy discard_policy = 8;
-    DiscardConfig discard_config = 9;
-}
-
-message TrafficQueues {
-    fixed32 intf_id = 1;
-    fixed32 onu_id = 2;
-    fixed32 uni_id = 4;
-    fixed32 port_no = 5;
-    repeated TrafficQueue traffic_queues = 6;
-}