diff --git a/rw_core/core/core.go b/rw_core/core/core.go
index 056594b..1a22267 100644
--- a/rw_core/core/core.go
+++ b/rw_core/core/core.go
@@ -30,6 +30,7 @@
 	"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
 	"github.com/opencord/voltha-lib-go/v4/pkg/log"
 	"github.com/opencord/voltha-lib-go/v4/pkg/probe"
+	"github.com/opencord/voltha-protos/v4/go/extension"
 	"github.com/opencord/voltha-protos/v4/go/voltha"
 	"google.golang.org/grpc"
 )
@@ -136,6 +137,10 @@
 
 	// start gRPC handler
 	grpcServer := grpcserver.NewGrpcServer(cf.GrpcAddress, nil, false, probe.GetProbeFromContext(ctx))
+
+	//Register the 'Extension' service on this gRPC server
+	addGRPCExtensionService(ctx, grpcServer, device.GetNewExtensionManager(deviceMgr))
+
 	go startGRPCService(ctx, grpcServer, api.NewNBIHandler(deviceMgr, logicalDeviceMgr, adapterMgr))
 	defer grpcServer.Stop()
 
@@ -163,3 +168,12 @@
 	server.Start(ctx)
 	probe.UpdateStatusFromContext(ctx, "grpc-service", probe.ServiceStatusStopped)
 }
+
+func addGRPCExtensionService(ctx context.Context, server *grpcserver.GrpcServer, handler extension.ExtensionServer) {
+	logger.Info(ctx, "extension-grpc-server-created")
+
+	server.AddService(func(server *grpc.Server) {
+		extension.RegisterExtensionServer(server, handler)
+	})
+
+}
diff --git a/rw_core/core/device/agent.go b/rw_core/core/device/agent.go
index a9767d4..b6f2b2f 100755
--- a/rw_core/core/device/agent.go
+++ b/rw_core/core/device/agent.go
@@ -38,6 +38,7 @@
 	coreutils "github.com/opencord/voltha-go/rw_core/utils"
 	"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
 	"github.com/opencord/voltha-lib-go/v4/pkg/log"
+	"github.com/opencord/voltha-protos/v4/go/extension"
 	ic "github.com/opencord/voltha-protos/v4/go/inter_container"
 	ofp "github.com/opencord/voltha-protos/v4/go/openflow_13"
 	"github.com/opencord/voltha-protos/v4/go/voltha"
@@ -966,3 +967,71 @@
 	logger.Debug(ctx, "setExtValue-Success-device-agent")
 	return &empty.Empty{}, nil
 }
+
+func (agent *Agent) getSingleValue(ctx context.Context, request *extension.SingleGetValueRequest) (*extension.SingleGetValueResponse, error) {
+	logger.Debugw(ctx, "getSingleValue", log.Fields{"device-id": request.TargetId})
+
+	if err := agent.requestQueue.WaitForGreenLight(ctx); err != nil {
+		return nil, err
+	}
+
+	cloned := agent.cloneDeviceWithoutLock()
+
+	//send request to adapter
+	ch, err := agent.adapterProxy.GetSingleValue(ctx, cloned.Adapter, request)
+	agent.requestQueue.RequestComplete()
+	if err != nil {
+		return nil, err
+	}
+
+	// Wait for the adapter response
+	rpcResponse, ok := <-ch
+	if !ok {
+		return nil, status.Errorf(codes.Aborted, "channel-closed-device-id-%s", agent.deviceID)
+	}
+
+	if rpcResponse.Err != nil {
+		return nil, rpcResponse.Err
+	}
+
+	resp := &extension.SingleGetValueResponse{}
+	if err := ptypes.UnmarshalAny(rpcResponse.Reply, resp); err != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+	}
+
+	return resp, nil
+}
+
+func (agent *Agent) setSingleValue(ctx context.Context, request *extension.SingleSetValueRequest) (*extension.SingleSetValueResponse, error) {
+	logger.Debugw(ctx, "setSingleValue", log.Fields{"device-id": request.TargetId})
+
+	if err := agent.requestQueue.WaitForGreenLight(ctx); err != nil {
+		return nil, err
+	}
+
+	cloned := agent.cloneDeviceWithoutLock()
+
+	//send request to adapter
+	ch, err := agent.adapterProxy.SetSingleValue(ctx, cloned.Adapter, request)
+	agent.requestQueue.RequestComplete()
+	if err != nil {
+		return nil, err
+	}
+
+	// Wait for the adapter response
+	rpcResponse, ok := <-ch
+	if !ok {
+		return nil, status.Errorf(codes.Aborted, "channel-closed-cloned-id-%s", agent.deviceID)
+	}
+
+	if rpcResponse.Err != nil {
+		return nil, rpcResponse.Err
+	}
+
+	resp := &extension.SingleSetValueResponse{}
+	if err := ptypes.UnmarshalAny(rpcResponse.Reply, resp); err != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "%s", err.Error())
+	}
+
+	return resp, nil
+}
diff --git a/rw_core/core/device/extension_manager.go b/rw_core/core/device/extension_manager.go
new file mode 100644
index 0000000..1e44ddf
--- /dev/null
+++ b/rw_core/core/device/extension_manager.go
@@ -0,0 +1,71 @@
+/*
+ * Copyright 2018-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.
+ */
+
+package device
+
+import (
+	"context"
+	"github.com/opencord/voltha-lib-go/v4/pkg/log"
+	"github.com/opencord/voltha-protos/v4/go/extension"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+type ExtensionManager struct {
+	DeviceManager *Manager
+}
+
+func GetNewExtensionManager(deviceManager *Manager) *ExtensionManager {
+	return &ExtensionManager{DeviceManager: deviceManager}
+}
+
+func (e ExtensionManager) GetExtValue(ctx context.Context, request *extension.SingleGetValueRequest) (*extension.SingleGetValueResponse, error) {
+	log.EnrichSpan(ctx, log.Fields{"device-id": request.TargetId})
+
+	logger.Debugw(ctx, "GetExtValue", log.Fields{"request": request})
+	agent := e.DeviceManager.getDeviceAgent(ctx, request.TargetId)
+	if agent == nil {
+		return nil, status.Errorf(codes.NotFound, "target-id %s", request.TargetId)
+	}
+
+	response, err := agent.getSingleValue(ctx, request)
+	if err != nil {
+		logger.Errorw(ctx, "Fail-to-get-single-value", log.Fields{"device-id": agent.deviceID, "error": err})
+		return nil, err
+	}
+
+	logger.Debugw(ctx, "GetExtValue response", log.Fields{"response": response})
+	return response, nil
+}
+
+func (e ExtensionManager) SetExtValue(ctx context.Context, request *extension.SingleSetValueRequest) (*extension.SingleSetValueResponse, error) {
+	log.EnrichSpan(ctx, log.Fields{"device-id": request.TargetId})
+
+	logger.Debugw(ctx, "SetExtValue", log.Fields{"request": request})
+	agent := e.DeviceManager.getDeviceAgent(ctx, request.TargetId)
+	if agent == nil {
+		return nil, status.Errorf(codes.NotFound, "target-id %s", request.TargetId)
+	}
+
+	response, err := agent.setSingleValue(ctx, request)
+	if err != nil {
+		logger.Errorw(ctx, "Fail-to-set-single-value", log.Fields{"device-id": agent.deviceID, "error": err})
+		return nil, err
+	}
+
+	logger.Debugw(ctx, "SetExtValue response", log.Fields{"response": response})
+	return response, nil
+}
diff --git a/rw_core/core/device/remote/adapter_proxy.go b/rw_core/core/device/remote/adapter_proxy.go
index fd9a1a0..66e7672 100755
--- a/rw_core/core/device/remote/adapter_proxy.go
+++ b/rw_core/core/device/remote/adapter_proxy.go
@@ -21,6 +21,7 @@
 
 	"github.com/opencord/voltha-lib-go/v4/pkg/kafka"
 	"github.com/opencord/voltha-lib-go/v4/pkg/log"
+	"github.com/opencord/voltha-protos/v4/go/extension"
 	ic "github.com/opencord/voltha-protos/v4/go/inter_container"
 	ofp "github.com/opencord/voltha-protos/v4/go/openflow_13"
 	"github.com/opencord/voltha-protos/v4/go/voltha"
@@ -474,3 +475,47 @@
 	replyToTopic := ap.getCoreTopic()
 	return ap.sendRPC(ctx, rpc, toTopic, &replyToTopic, true, value.Id, args...)
 }
+
+// GetSingleValue get a value from the adapter, based on the request type
+func (ap *AdapterProxy) GetSingleValue(ctx context.Context, adapterType string, request *extension.SingleGetValueRequest) (chan *kafka.RpcResponse, error) {
+	logger.Debugw(ctx, "GetSingleValue", log.Fields{"device-id": request.TargetId})
+	rpc := "single_get_value_request"
+	toTopic, err := ap.getAdapterTopic(ctx, request.TargetId, adapterType)
+	if err != nil {
+		return nil, err
+	}
+
+	// Use a device specific topic to send the request.  The adapter handling the device creates a device
+	// specific topic
+	args := []*kafka.KVArg{
+		{
+			Key:   "request",
+			Value: request,
+		},
+	}
+
+	replyToTopic := ap.getCoreTopic()
+	return ap.sendRPC(ctx, rpc, toTopic, &replyToTopic, true, request.TargetId, args...)
+}
+
+// SetSingleValue set a single value on the adapter, based on the request type
+func (ap *AdapterProxy) SetSingleValue(ctx context.Context, adapterType string, request *extension.SingleSetValueRequest) (chan *kafka.RpcResponse, error) {
+	logger.Debugw(ctx, "SetSingleValue", log.Fields{"device-id": request.TargetId})
+	rpc := "single_set_value_request"
+	toTopic, err := ap.getAdapterTopic(ctx, request.TargetId, adapterType)
+	if err != nil {
+		return nil, err
+	}
+
+	// Use a device specific topic to send the request.  The adapter handling the device creates a device
+	// specific topic
+	args := []*kafka.KVArg{
+		{
+			Key:   "request",
+			Value: request,
+		},
+	}
+
+	replyToTopic := ap.getCoreTopic()
+	return ap.sendRPC(ctx, rpc, toTopic, &replyToTopic, true, request.TargetId, args...)
+}
diff --git a/vendor/github.com/opencord/voltha-protos/v4/go/extension/extensions.pb.go b/vendor/github.com/opencord/voltha-protos/v4/go/extension/extensions.pb.go
new file mode 100644
index 0000000..9cfbe54
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-protos/v4/go/extension/extensions.pb.go
@@ -0,0 +1,1091 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: voltha_protos/extensions.proto
+
+package extension
+
+import (
+	context "context"
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	config "github.com/opencord/voltha-protos/v4/go/ext/config"
+	grpc "google.golang.org/grpc"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// AlarmConfig from public import voltha_protos/ext_config.proto
+type AlarmConfig = config.AlarmConfig
+type AlarmConfig_OnuItuPonAlarmConfig = config.AlarmConfig_OnuItuPonAlarmConfig
+
+// OnuItuPonAlarm from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm = config.OnuItuPonAlarm
+type OnuItuPonAlarm_RateThresholdConfig_ = config.OnuItuPonAlarm_RateThresholdConfig_
+type OnuItuPonAlarm_RateRangeConfig_ = config.OnuItuPonAlarm_RateRangeConfig_
+type OnuItuPonAlarm_ValueThresholdConfig_ = config.OnuItuPonAlarm_ValueThresholdConfig_
+
+// OnuItuPonAlarm_SoakTime from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_SoakTime = config.OnuItuPonAlarm_SoakTime
+
+// OnuItuPonAlarm_RateThresholdConfig from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_RateThresholdConfig = config.OnuItuPonAlarm_RateThresholdConfig
+
+// OnuItuPonAlarm_RateRangeConfig from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_RateRangeConfig = config.OnuItuPonAlarm_RateRangeConfig
+
+// OnuItuPonAlarm_ValueThresholdConfig from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_ValueThresholdConfig = config.OnuItuPonAlarm_ValueThresholdConfig
+
+// OnuItuPonAlarm_AlarmID from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_AlarmID = config.OnuItuPonAlarm_AlarmID
+
+var OnuItuPonAlarm_AlarmID_name = config.OnuItuPonAlarm_AlarmID_name
+var OnuItuPonAlarm_AlarmID_value = config.OnuItuPonAlarm_AlarmID_value
+
+const OnuItuPonAlarm_RDI_ERRORS = OnuItuPonAlarm_AlarmID(config.OnuItuPonAlarm_RDI_ERRORS)
+
+// OnuItuPonAlarm_AlarmReportingCondition from public import voltha_protos/ext_config.proto
+type OnuItuPonAlarm_AlarmReportingCondition = config.OnuItuPonAlarm_AlarmReportingCondition
+
+var OnuItuPonAlarm_AlarmReportingCondition_name = config.OnuItuPonAlarm_AlarmReportingCondition_name
+var OnuItuPonAlarm_AlarmReportingCondition_value = config.OnuItuPonAlarm_AlarmReportingCondition_value
+
+const OnuItuPonAlarm_RATE_THRESHOLD = OnuItuPonAlarm_AlarmReportingCondition(config.OnuItuPonAlarm_RATE_THRESHOLD)
+const OnuItuPonAlarm_RATE_RANGE = OnuItuPonAlarm_AlarmReportingCondition(config.OnuItuPonAlarm_RATE_RANGE)
+const OnuItuPonAlarm_VALUE_THRESHOLD = OnuItuPonAlarm_AlarmReportingCondition(config.OnuItuPonAlarm_VALUE_THRESHOLD)
+
+type GetOnuUniInfoResponse_ConfigurationInd int32
+
+const (
+	GetOnuUniInfoResponse_UNKOWN               GetOnuUniInfoResponse_ConfigurationInd = 0
+	GetOnuUniInfoResponse_TEN_BASE_T_FDX       GetOnuUniInfoResponse_ConfigurationInd = 1
+	GetOnuUniInfoResponse_HUNDRED_BASE_T_FDX   GetOnuUniInfoResponse_ConfigurationInd = 2
+	GetOnuUniInfoResponse_GIGABIT_ETHERNET_FDX GetOnuUniInfoResponse_ConfigurationInd = 3
+	GetOnuUniInfoResponse_TEN_G_ETHERNET_FDX   GetOnuUniInfoResponse_ConfigurationInd = 4
+	GetOnuUniInfoResponse_TEN_BASE_T_HDX       GetOnuUniInfoResponse_ConfigurationInd = 5
+	GetOnuUniInfoResponse_HUNDRED_BASE_T_HDX   GetOnuUniInfoResponse_ConfigurationInd = 6
+	GetOnuUniInfoResponse_GIGABIT_ETHERNET_HDX GetOnuUniInfoResponse_ConfigurationInd = 7
+)
+
+var GetOnuUniInfoResponse_ConfigurationInd_name = map[int32]string{
+	0: "UNKOWN",
+	1: "TEN_BASE_T_FDX",
+	2: "HUNDRED_BASE_T_FDX",
+	3: "GIGABIT_ETHERNET_FDX",
+	4: "TEN_G_ETHERNET_FDX",
+	5: "TEN_BASE_T_HDX",
+	6: "HUNDRED_BASE_T_HDX",
+	7: "GIGABIT_ETHERNET_HDX",
+}
+
+var GetOnuUniInfoResponse_ConfigurationInd_value = map[string]int32{
+	"UNKOWN":               0,
+	"TEN_BASE_T_FDX":       1,
+	"HUNDRED_BASE_T_FDX":   2,
+	"GIGABIT_ETHERNET_FDX": 3,
+	"TEN_G_ETHERNET_FDX":   4,
+	"TEN_BASE_T_HDX":       5,
+	"HUNDRED_BASE_T_HDX":   6,
+	"GIGABIT_ETHERNET_HDX": 7,
+}
+
+func (x GetOnuUniInfoResponse_ConfigurationInd) String() string {
+	return proto.EnumName(GetOnuUniInfoResponse_ConfigurationInd_name, int32(x))
+}
+
+func (GetOnuUniInfoResponse_ConfigurationInd) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{3, 0}
+}
+
+type GetOnuUniInfoResponse_AdministrativeState int32
+
+const (
+	GetOnuUniInfoResponse_ADMSTATE_UNDEFINED GetOnuUniInfoResponse_AdministrativeState = 0
+	GetOnuUniInfoResponse_LOCKED             GetOnuUniInfoResponse_AdministrativeState = 1
+	GetOnuUniInfoResponse_UNLOCKED           GetOnuUniInfoResponse_AdministrativeState = 2
+)
+
+var GetOnuUniInfoResponse_AdministrativeState_name = map[int32]string{
+	0: "ADMSTATE_UNDEFINED",
+	1: "LOCKED",
+	2: "UNLOCKED",
+}
+
+var GetOnuUniInfoResponse_AdministrativeState_value = map[string]int32{
+	"ADMSTATE_UNDEFINED": 0,
+	"LOCKED":             1,
+	"UNLOCKED":           2,
+}
+
+func (x GetOnuUniInfoResponse_AdministrativeState) String() string {
+	return proto.EnumName(GetOnuUniInfoResponse_AdministrativeState_name, int32(x))
+}
+
+func (GetOnuUniInfoResponse_AdministrativeState) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{3, 1}
+}
+
+type GetOnuUniInfoResponse_OperationalState int32
+
+const (
+	GetOnuUniInfoResponse_OPERSTATE_UNDEFINED GetOnuUniInfoResponse_OperationalState = 0
+	GetOnuUniInfoResponse_ENABLED             GetOnuUniInfoResponse_OperationalState = 1
+	GetOnuUniInfoResponse_DISABLED            GetOnuUniInfoResponse_OperationalState = 2
+)
+
+var GetOnuUniInfoResponse_OperationalState_name = map[int32]string{
+	0: "OPERSTATE_UNDEFINED",
+	1: "ENABLED",
+	2: "DISABLED",
+}
+
+var GetOnuUniInfoResponse_OperationalState_value = map[string]int32{
+	"OPERSTATE_UNDEFINED": 0,
+	"ENABLED":             1,
+	"DISABLED":            2,
+}
+
+func (x GetOnuUniInfoResponse_OperationalState) String() string {
+	return proto.EnumName(GetOnuUniInfoResponse_OperationalState_name, int32(x))
+}
+
+func (GetOnuUniInfoResponse_OperationalState) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{3, 2}
+}
+
+type GetValueResponse_Status int32
+
+const (
+	GetValueResponse_STATUS_UNDEFINED GetValueResponse_Status = 0
+	GetValueResponse_OK               GetValueResponse_Status = 1
+	GetValueResponse_ERROR            GetValueResponse_Status = 2
+)
+
+var GetValueResponse_Status_name = map[int32]string{
+	0: "STATUS_UNDEFINED",
+	1: "OK",
+	2: "ERROR",
+}
+
+var GetValueResponse_Status_value = map[string]int32{
+	"STATUS_UNDEFINED": 0,
+	"OK":               1,
+	"ERROR":            2,
+}
+
+func (x GetValueResponse_Status) String() string {
+	return proto.EnumName(GetValueResponse_Status_name, int32(x))
+}
+
+func (GetValueResponse_Status) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{5, 0}
+}
+
+type GetValueResponse_ErrorReason int32
+
+const (
+	GetValueResponse_REASON_UNDEFINED GetValueResponse_ErrorReason = 0
+	GetValueResponse_UNSUPPORTED      GetValueResponse_ErrorReason = 1
+)
+
+var GetValueResponse_ErrorReason_name = map[int32]string{
+	0: "REASON_UNDEFINED",
+	1: "UNSUPPORTED",
+}
+
+var GetValueResponse_ErrorReason_value = map[string]int32{
+	"REASON_UNDEFINED": 0,
+	"UNSUPPORTED":      1,
+}
+
+func (x GetValueResponse_ErrorReason) String() string {
+	return proto.EnumName(GetValueResponse_ErrorReason_name, int32(x))
+}
+
+func (GetValueResponse_ErrorReason) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{5, 1}
+}
+
+type SetValueResponse_Status int32
+
+const (
+	SetValueResponse_STATUS_UNDEFINED SetValueResponse_Status = 0
+	SetValueResponse_OK               SetValueResponse_Status = 1
+	SetValueResponse_ERROR            SetValueResponse_Status = 2
+)
+
+var SetValueResponse_Status_name = map[int32]string{
+	0: "STATUS_UNDEFINED",
+	1: "OK",
+	2: "ERROR",
+}
+
+var SetValueResponse_Status_value = map[string]int32{
+	"STATUS_UNDEFINED": 0,
+	"OK":               1,
+	"ERROR":            2,
+}
+
+func (x SetValueResponse_Status) String() string {
+	return proto.EnumName(SetValueResponse_Status_name, int32(x))
+}
+
+func (SetValueResponse_Status) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{7, 0}
+}
+
+type SetValueResponse_ErrorReason int32
+
+const (
+	SetValueResponse_REASON_UNDEFINED SetValueResponse_ErrorReason = 0
+	SetValueResponse_UNSUPPORTED      SetValueResponse_ErrorReason = 1
+)
+
+var SetValueResponse_ErrorReason_name = map[int32]string{
+	0: "REASON_UNDEFINED",
+	1: "UNSUPPORTED",
+}
+
+var SetValueResponse_ErrorReason_value = map[string]int32{
+	"REASON_UNDEFINED": 0,
+	"UNSUPPORTED":      1,
+}
+
+func (x SetValueResponse_ErrorReason) String() string {
+	return proto.EnumName(SetValueResponse_ErrorReason_name, int32(x))
+}
+
+func (SetValueResponse_ErrorReason) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{7, 1}
+}
+
+type GetDistanceRequest struct {
+	OnuDeviceId          string   `protobuf:"bytes,1,opt,name=onuDeviceId,proto3" json:"onuDeviceId,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GetDistanceRequest) Reset()         { *m = GetDistanceRequest{} }
+func (m *GetDistanceRequest) String() string { return proto.CompactTextString(m) }
+func (*GetDistanceRequest) ProtoMessage()    {}
+func (*GetDistanceRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{0}
+}
+
+func (m *GetDistanceRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetDistanceRequest.Unmarshal(m, b)
+}
+func (m *GetDistanceRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetDistanceRequest.Marshal(b, m, deterministic)
+}
+func (m *GetDistanceRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetDistanceRequest.Merge(m, src)
+}
+func (m *GetDistanceRequest) XXX_Size() int {
+	return xxx_messageInfo_GetDistanceRequest.Size(m)
+}
+func (m *GetDistanceRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetDistanceRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetDistanceRequest proto.InternalMessageInfo
+
+func (m *GetDistanceRequest) GetOnuDeviceId() string {
+	if m != nil {
+		return m.OnuDeviceId
+	}
+	return ""
+}
+
+type GetDistanceResponse struct {
+	Distance             uint32   `protobuf:"varint,1,opt,name=distance,proto3" json:"distance,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GetDistanceResponse) Reset()         { *m = GetDistanceResponse{} }
+func (m *GetDistanceResponse) String() string { return proto.CompactTextString(m) }
+func (*GetDistanceResponse) ProtoMessage()    {}
+func (*GetDistanceResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{1}
+}
+
+func (m *GetDistanceResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetDistanceResponse.Unmarshal(m, b)
+}
+func (m *GetDistanceResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetDistanceResponse.Marshal(b, m, deterministic)
+}
+func (m *GetDistanceResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetDistanceResponse.Merge(m, src)
+}
+func (m *GetDistanceResponse) XXX_Size() int {
+	return xxx_messageInfo_GetDistanceResponse.Size(m)
+}
+func (m *GetDistanceResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetDistanceResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetDistanceResponse proto.InternalMessageInfo
+
+func (m *GetDistanceResponse) GetDistance() uint32 {
+	if m != nil {
+		return m.Distance
+	}
+	return 0
+}
+
+type GetOnuUniInfoRequest struct {
+	UniIndex             uint32   `protobuf:"varint,1,opt,name=uniIndex,proto3" json:"uniIndex,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *GetOnuUniInfoRequest) Reset()         { *m = GetOnuUniInfoRequest{} }
+func (m *GetOnuUniInfoRequest) String() string { return proto.CompactTextString(m) }
+func (*GetOnuUniInfoRequest) ProtoMessage()    {}
+func (*GetOnuUniInfoRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{2}
+}
+
+func (m *GetOnuUniInfoRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetOnuUniInfoRequest.Unmarshal(m, b)
+}
+func (m *GetOnuUniInfoRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetOnuUniInfoRequest.Marshal(b, m, deterministic)
+}
+func (m *GetOnuUniInfoRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetOnuUniInfoRequest.Merge(m, src)
+}
+func (m *GetOnuUniInfoRequest) XXX_Size() int {
+	return xxx_messageInfo_GetOnuUniInfoRequest.Size(m)
+}
+func (m *GetOnuUniInfoRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetOnuUniInfoRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetOnuUniInfoRequest proto.InternalMessageInfo
+
+func (m *GetOnuUniInfoRequest) GetUniIndex() uint32 {
+	if m != nil {
+		return m.UniIndex
+	}
+	return 0
+}
+
+type GetOnuUniInfoResponse struct {
+	AdmState             GetOnuUniInfoResponse_AdministrativeState `protobuf:"varint,1,opt,name=admState,proto3,enum=extension.GetOnuUniInfoResponse_AdministrativeState" json:"admState,omitempty"`
+	OperState            GetOnuUniInfoResponse_OperationalState    `protobuf:"varint,2,opt,name=operState,proto3,enum=extension.GetOnuUniInfoResponse_OperationalState" json:"operState,omitempty"`
+	ConfigInd            GetOnuUniInfoResponse_ConfigurationInd    `protobuf:"varint,3,opt,name=configInd,proto3,enum=extension.GetOnuUniInfoResponse_ConfigurationInd" json:"configInd,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                                  `json:"-"`
+	XXX_unrecognized     []byte                                    `json:"-"`
+	XXX_sizecache        int32                                     `json:"-"`
+}
+
+func (m *GetOnuUniInfoResponse) Reset()         { *m = GetOnuUniInfoResponse{} }
+func (m *GetOnuUniInfoResponse) String() string { return proto.CompactTextString(m) }
+func (*GetOnuUniInfoResponse) ProtoMessage()    {}
+func (*GetOnuUniInfoResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{3}
+}
+
+func (m *GetOnuUniInfoResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetOnuUniInfoResponse.Unmarshal(m, b)
+}
+func (m *GetOnuUniInfoResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetOnuUniInfoResponse.Marshal(b, m, deterministic)
+}
+func (m *GetOnuUniInfoResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetOnuUniInfoResponse.Merge(m, src)
+}
+func (m *GetOnuUniInfoResponse) XXX_Size() int {
+	return xxx_messageInfo_GetOnuUniInfoResponse.Size(m)
+}
+func (m *GetOnuUniInfoResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetOnuUniInfoResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetOnuUniInfoResponse proto.InternalMessageInfo
+
+func (m *GetOnuUniInfoResponse) GetAdmState() GetOnuUniInfoResponse_AdministrativeState {
+	if m != nil {
+		return m.AdmState
+	}
+	return GetOnuUniInfoResponse_ADMSTATE_UNDEFINED
+}
+
+func (m *GetOnuUniInfoResponse) GetOperState() GetOnuUniInfoResponse_OperationalState {
+	if m != nil {
+		return m.OperState
+	}
+	return GetOnuUniInfoResponse_OPERSTATE_UNDEFINED
+}
+
+func (m *GetOnuUniInfoResponse) GetConfigInd() GetOnuUniInfoResponse_ConfigurationInd {
+	if m != nil {
+		return m.ConfigInd
+	}
+	return GetOnuUniInfoResponse_UNKOWN
+}
+
+type GetValueRequest struct {
+	// Types that are valid to be assigned to Request:
+	//	*GetValueRequest_Distance
+	//	*GetValueRequest_UniInfo
+	Request              isGetValueRequest_Request `protobuf_oneof:"request"`
+	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
+	XXX_unrecognized     []byte                    `json:"-"`
+	XXX_sizecache        int32                     `json:"-"`
+}
+
+func (m *GetValueRequest) Reset()         { *m = GetValueRequest{} }
+func (m *GetValueRequest) String() string { return proto.CompactTextString(m) }
+func (*GetValueRequest) ProtoMessage()    {}
+func (*GetValueRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{4}
+}
+
+func (m *GetValueRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetValueRequest.Unmarshal(m, b)
+}
+func (m *GetValueRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetValueRequest.Marshal(b, m, deterministic)
+}
+func (m *GetValueRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetValueRequest.Merge(m, src)
+}
+func (m *GetValueRequest) XXX_Size() int {
+	return xxx_messageInfo_GetValueRequest.Size(m)
+}
+func (m *GetValueRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetValueRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetValueRequest proto.InternalMessageInfo
+
+type isGetValueRequest_Request interface {
+	isGetValueRequest_Request()
+}
+
+type GetValueRequest_Distance struct {
+	Distance *GetDistanceRequest `protobuf:"bytes,1,opt,name=distance,proto3,oneof"`
+}
+
+type GetValueRequest_UniInfo struct {
+	UniInfo *GetOnuUniInfoRequest `protobuf:"bytes,2,opt,name=uniInfo,proto3,oneof"`
+}
+
+func (*GetValueRequest_Distance) isGetValueRequest_Request() {}
+
+func (*GetValueRequest_UniInfo) isGetValueRequest_Request() {}
+
+func (m *GetValueRequest) GetRequest() isGetValueRequest_Request {
+	if m != nil {
+		return m.Request
+	}
+	return nil
+}
+
+func (m *GetValueRequest) GetDistance() *GetDistanceRequest {
+	if x, ok := m.GetRequest().(*GetValueRequest_Distance); ok {
+		return x.Distance
+	}
+	return nil
+}
+
+func (m *GetValueRequest) GetUniInfo() *GetOnuUniInfoRequest {
+	if x, ok := m.GetRequest().(*GetValueRequest_UniInfo); ok {
+		return x.UniInfo
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*GetValueRequest) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*GetValueRequest_Distance)(nil),
+		(*GetValueRequest_UniInfo)(nil),
+	}
+}
+
+type GetValueResponse struct {
+	Status    GetValueResponse_Status      `protobuf:"varint,1,opt,name=status,proto3,enum=extension.GetValueResponse_Status" json:"status,omitempty"`
+	ErrReason GetValueResponse_ErrorReason `protobuf:"varint,2,opt,name=errReason,proto3,enum=extension.GetValueResponse_ErrorReason" json:"errReason,omitempty"`
+	// Types that are valid to be assigned to Response:
+	//	*GetValueResponse_Distance
+	//	*GetValueResponse_UniInfo
+	Response             isGetValueResponse_Response `protobuf_oneof:"response"`
+	XXX_NoUnkeyedLiteral struct{}                    `json:"-"`
+	XXX_unrecognized     []byte                      `json:"-"`
+	XXX_sizecache        int32                       `json:"-"`
+}
+
+func (m *GetValueResponse) Reset()         { *m = GetValueResponse{} }
+func (m *GetValueResponse) String() string { return proto.CompactTextString(m) }
+func (*GetValueResponse) ProtoMessage()    {}
+func (*GetValueResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{5}
+}
+
+func (m *GetValueResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_GetValueResponse.Unmarshal(m, b)
+}
+func (m *GetValueResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_GetValueResponse.Marshal(b, m, deterministic)
+}
+func (m *GetValueResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_GetValueResponse.Merge(m, src)
+}
+func (m *GetValueResponse) XXX_Size() int {
+	return xxx_messageInfo_GetValueResponse.Size(m)
+}
+func (m *GetValueResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_GetValueResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_GetValueResponse proto.InternalMessageInfo
+
+func (m *GetValueResponse) GetStatus() GetValueResponse_Status {
+	if m != nil {
+		return m.Status
+	}
+	return GetValueResponse_STATUS_UNDEFINED
+}
+
+func (m *GetValueResponse) GetErrReason() GetValueResponse_ErrorReason {
+	if m != nil {
+		return m.ErrReason
+	}
+	return GetValueResponse_REASON_UNDEFINED
+}
+
+type isGetValueResponse_Response interface {
+	isGetValueResponse_Response()
+}
+
+type GetValueResponse_Distance struct {
+	Distance *GetDistanceResponse `protobuf:"bytes,3,opt,name=distance,proto3,oneof"`
+}
+
+type GetValueResponse_UniInfo struct {
+	UniInfo *GetOnuUniInfoResponse `protobuf:"bytes,4,opt,name=uniInfo,proto3,oneof"`
+}
+
+func (*GetValueResponse_Distance) isGetValueResponse_Response() {}
+
+func (*GetValueResponse_UniInfo) isGetValueResponse_Response() {}
+
+func (m *GetValueResponse) GetResponse() isGetValueResponse_Response {
+	if m != nil {
+		return m.Response
+	}
+	return nil
+}
+
+func (m *GetValueResponse) GetDistance() *GetDistanceResponse {
+	if x, ok := m.GetResponse().(*GetValueResponse_Distance); ok {
+		return x.Distance
+	}
+	return nil
+}
+
+func (m *GetValueResponse) GetUniInfo() *GetOnuUniInfoResponse {
+	if x, ok := m.GetResponse().(*GetValueResponse_UniInfo); ok {
+		return x.UniInfo
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*GetValueResponse) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*GetValueResponse_Distance)(nil),
+		(*GetValueResponse_UniInfo)(nil),
+	}
+}
+
+type SetValueRequest struct {
+	// Types that are valid to be assigned to Request:
+	//	*SetValueRequest_AlarmConfig
+	Request              isSetValueRequest_Request `protobuf_oneof:"request"`
+	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
+	XXX_unrecognized     []byte                    `json:"-"`
+	XXX_sizecache        int32                     `json:"-"`
+}
+
+func (m *SetValueRequest) Reset()         { *m = SetValueRequest{} }
+func (m *SetValueRequest) String() string { return proto.CompactTextString(m) }
+func (*SetValueRequest) ProtoMessage()    {}
+func (*SetValueRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{6}
+}
+
+func (m *SetValueRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SetValueRequest.Unmarshal(m, b)
+}
+func (m *SetValueRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SetValueRequest.Marshal(b, m, deterministic)
+}
+func (m *SetValueRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SetValueRequest.Merge(m, src)
+}
+func (m *SetValueRequest) XXX_Size() int {
+	return xxx_messageInfo_SetValueRequest.Size(m)
+}
+func (m *SetValueRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_SetValueRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SetValueRequest proto.InternalMessageInfo
+
+type isSetValueRequest_Request interface {
+	isSetValueRequest_Request()
+}
+
+type SetValueRequest_AlarmConfig struct {
+	AlarmConfig *config.AlarmConfig `protobuf:"bytes,1,opt,name=alarm_config,json=alarmConfig,proto3,oneof"`
+}
+
+func (*SetValueRequest_AlarmConfig) isSetValueRequest_Request() {}
+
+func (m *SetValueRequest) GetRequest() isSetValueRequest_Request {
+	if m != nil {
+		return m.Request
+	}
+	return nil
+}
+
+func (m *SetValueRequest) GetAlarmConfig() *config.AlarmConfig {
+	if x, ok := m.GetRequest().(*SetValueRequest_AlarmConfig); ok {
+		return x.AlarmConfig
+	}
+	return nil
+}
+
+// XXX_OneofWrappers is for the internal use of the proto package.
+func (*SetValueRequest) XXX_OneofWrappers() []interface{} {
+	return []interface{}{
+		(*SetValueRequest_AlarmConfig)(nil),
+	}
+}
+
+type SetValueResponse struct {
+	Status               SetValueResponse_Status      `protobuf:"varint,1,opt,name=status,proto3,enum=extension.SetValueResponse_Status" json:"status,omitempty"`
+	ErrReason            SetValueResponse_ErrorReason `protobuf:"varint,2,opt,name=errReason,proto3,enum=extension.SetValueResponse_ErrorReason" json:"errReason,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                     `json:"-"`
+	XXX_unrecognized     []byte                       `json:"-"`
+	XXX_sizecache        int32                        `json:"-"`
+}
+
+func (m *SetValueResponse) Reset()         { *m = SetValueResponse{} }
+func (m *SetValueResponse) String() string { return proto.CompactTextString(m) }
+func (*SetValueResponse) ProtoMessage()    {}
+func (*SetValueResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{7}
+}
+
+func (m *SetValueResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SetValueResponse.Unmarshal(m, b)
+}
+func (m *SetValueResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SetValueResponse.Marshal(b, m, deterministic)
+}
+func (m *SetValueResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SetValueResponse.Merge(m, src)
+}
+func (m *SetValueResponse) XXX_Size() int {
+	return xxx_messageInfo_SetValueResponse.Size(m)
+}
+func (m *SetValueResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_SetValueResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SetValueResponse proto.InternalMessageInfo
+
+func (m *SetValueResponse) GetStatus() SetValueResponse_Status {
+	if m != nil {
+		return m.Status
+	}
+	return SetValueResponse_STATUS_UNDEFINED
+}
+
+func (m *SetValueResponse) GetErrReason() SetValueResponse_ErrorReason {
+	if m != nil {
+		return m.ErrReason
+	}
+	return SetValueResponse_REASON_UNDEFINED
+}
+
+type SingleGetValueRequest struct {
+	TargetId             string           `protobuf:"bytes,1,opt,name=targetId,proto3" json:"targetId,omitempty"`
+	Request              *GetValueRequest `protobuf:"bytes,2,opt,name=request,proto3" json:"request,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *SingleGetValueRequest) Reset()         { *m = SingleGetValueRequest{} }
+func (m *SingleGetValueRequest) String() string { return proto.CompactTextString(m) }
+func (*SingleGetValueRequest) ProtoMessage()    {}
+func (*SingleGetValueRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{8}
+}
+
+func (m *SingleGetValueRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SingleGetValueRequest.Unmarshal(m, b)
+}
+func (m *SingleGetValueRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SingleGetValueRequest.Marshal(b, m, deterministic)
+}
+func (m *SingleGetValueRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SingleGetValueRequest.Merge(m, src)
+}
+func (m *SingleGetValueRequest) XXX_Size() int {
+	return xxx_messageInfo_SingleGetValueRequest.Size(m)
+}
+func (m *SingleGetValueRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_SingleGetValueRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SingleGetValueRequest proto.InternalMessageInfo
+
+func (m *SingleGetValueRequest) GetTargetId() string {
+	if m != nil {
+		return m.TargetId
+	}
+	return ""
+}
+
+func (m *SingleGetValueRequest) GetRequest() *GetValueRequest {
+	if m != nil {
+		return m.Request
+	}
+	return nil
+}
+
+type SingleGetValueResponse struct {
+	Response             *GetValueResponse `protobuf:"bytes,1,opt,name=response,proto3" json:"response,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *SingleGetValueResponse) Reset()         { *m = SingleGetValueResponse{} }
+func (m *SingleGetValueResponse) String() string { return proto.CompactTextString(m) }
+func (*SingleGetValueResponse) ProtoMessage()    {}
+func (*SingleGetValueResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{9}
+}
+
+func (m *SingleGetValueResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SingleGetValueResponse.Unmarshal(m, b)
+}
+func (m *SingleGetValueResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SingleGetValueResponse.Marshal(b, m, deterministic)
+}
+func (m *SingleGetValueResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SingleGetValueResponse.Merge(m, src)
+}
+func (m *SingleGetValueResponse) XXX_Size() int {
+	return xxx_messageInfo_SingleGetValueResponse.Size(m)
+}
+func (m *SingleGetValueResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_SingleGetValueResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SingleGetValueResponse proto.InternalMessageInfo
+
+func (m *SingleGetValueResponse) GetResponse() *GetValueResponse {
+	if m != nil {
+		return m.Response
+	}
+	return nil
+}
+
+type SingleSetValueRequest struct {
+	TargetId             string           `protobuf:"bytes,1,opt,name=targetId,proto3" json:"targetId,omitempty"`
+	Request              *SetValueRequest `protobuf:"bytes,2,opt,name=request,proto3" json:"request,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *SingleSetValueRequest) Reset()         { *m = SingleSetValueRequest{} }
+func (m *SingleSetValueRequest) String() string { return proto.CompactTextString(m) }
+func (*SingleSetValueRequest) ProtoMessage()    {}
+func (*SingleSetValueRequest) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{10}
+}
+
+func (m *SingleSetValueRequest) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SingleSetValueRequest.Unmarshal(m, b)
+}
+func (m *SingleSetValueRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SingleSetValueRequest.Marshal(b, m, deterministic)
+}
+func (m *SingleSetValueRequest) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SingleSetValueRequest.Merge(m, src)
+}
+func (m *SingleSetValueRequest) XXX_Size() int {
+	return xxx_messageInfo_SingleSetValueRequest.Size(m)
+}
+func (m *SingleSetValueRequest) XXX_DiscardUnknown() {
+	xxx_messageInfo_SingleSetValueRequest.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SingleSetValueRequest proto.InternalMessageInfo
+
+func (m *SingleSetValueRequest) GetTargetId() string {
+	if m != nil {
+		return m.TargetId
+	}
+	return ""
+}
+
+func (m *SingleSetValueRequest) GetRequest() *SetValueRequest {
+	if m != nil {
+		return m.Request
+	}
+	return nil
+}
+
+type SingleSetValueResponse struct {
+	Response             *SetValueResponse `protobuf:"bytes,1,opt,name=response,proto3" json:"response,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
+}
+
+func (m *SingleSetValueResponse) Reset()         { *m = SingleSetValueResponse{} }
+func (m *SingleSetValueResponse) String() string { return proto.CompactTextString(m) }
+func (*SingleSetValueResponse) ProtoMessage()    {}
+func (*SingleSetValueResponse) Descriptor() ([]byte, []int) {
+	return fileDescriptor_7ecf6e9799a9202d, []int{11}
+}
+
+func (m *SingleSetValueResponse) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_SingleSetValueResponse.Unmarshal(m, b)
+}
+func (m *SingleSetValueResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_SingleSetValueResponse.Marshal(b, m, deterministic)
+}
+func (m *SingleSetValueResponse) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_SingleSetValueResponse.Merge(m, src)
+}
+func (m *SingleSetValueResponse) XXX_Size() int {
+	return xxx_messageInfo_SingleSetValueResponse.Size(m)
+}
+func (m *SingleSetValueResponse) XXX_DiscardUnknown() {
+	xxx_messageInfo_SingleSetValueResponse.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_SingleSetValueResponse proto.InternalMessageInfo
+
+func (m *SingleSetValueResponse) GetResponse() *SetValueResponse {
+	if m != nil {
+		return m.Response
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterEnum("extension.GetOnuUniInfoResponse_ConfigurationInd", GetOnuUniInfoResponse_ConfigurationInd_name, GetOnuUniInfoResponse_ConfigurationInd_value)
+	proto.RegisterEnum("extension.GetOnuUniInfoResponse_AdministrativeState", GetOnuUniInfoResponse_AdministrativeState_name, GetOnuUniInfoResponse_AdministrativeState_value)
+	proto.RegisterEnum("extension.GetOnuUniInfoResponse_OperationalState", GetOnuUniInfoResponse_OperationalState_name, GetOnuUniInfoResponse_OperationalState_value)
+	proto.RegisterEnum("extension.GetValueResponse_Status", GetValueResponse_Status_name, GetValueResponse_Status_value)
+	proto.RegisterEnum("extension.GetValueResponse_ErrorReason", GetValueResponse_ErrorReason_name, GetValueResponse_ErrorReason_value)
+	proto.RegisterEnum("extension.SetValueResponse_Status", SetValueResponse_Status_name, SetValueResponse_Status_value)
+	proto.RegisterEnum("extension.SetValueResponse_ErrorReason", SetValueResponse_ErrorReason_name, SetValueResponse_ErrorReason_value)
+	proto.RegisterType((*GetDistanceRequest)(nil), "extension.GetDistanceRequest")
+	proto.RegisterType((*GetDistanceResponse)(nil), "extension.GetDistanceResponse")
+	proto.RegisterType((*GetOnuUniInfoRequest)(nil), "extension.GetOnuUniInfoRequest")
+	proto.RegisterType((*GetOnuUniInfoResponse)(nil), "extension.GetOnuUniInfoResponse")
+	proto.RegisterType((*GetValueRequest)(nil), "extension.GetValueRequest")
+	proto.RegisterType((*GetValueResponse)(nil), "extension.GetValueResponse")
+	proto.RegisterType((*SetValueRequest)(nil), "extension.SetValueRequest")
+	proto.RegisterType((*SetValueResponse)(nil), "extension.SetValueResponse")
+	proto.RegisterType((*SingleGetValueRequest)(nil), "extension.SingleGetValueRequest")
+	proto.RegisterType((*SingleGetValueResponse)(nil), "extension.SingleGetValueResponse")
+	proto.RegisterType((*SingleSetValueRequest)(nil), "extension.SingleSetValueRequest")
+	proto.RegisterType((*SingleSetValueResponse)(nil), "extension.SingleSetValueResponse")
+}
+
+func init() { proto.RegisterFile("voltha_protos/extensions.proto", fileDescriptor_7ecf6e9799a9202d) }
+
+var fileDescriptor_7ecf6e9799a9202d = []byte{
+	// 844 bytes of a gzipped FileDescriptorProto
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+	0x00, 0x00, 0xff, 0xff, 0xa4, 0x45, 0xe3, 0xcc, 0x59, 0x09, 0x00, 0x00,
+}
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ context.Context
+var _ grpc.ClientConn
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+const _ = grpc.SupportPackageIsVersion4
+
+// ExtensionClient is the client API for Extension service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
+type ExtensionClient interface {
+	// Get a single attribute
+	GetExtValue(ctx context.Context, in *SingleGetValueRequest, opts ...grpc.CallOption) (*SingleGetValueResponse, error)
+	// Set a single attribute
+	SetExtValue(ctx context.Context, in *SingleSetValueRequest, opts ...grpc.CallOption) (*SingleSetValueResponse, error)
+}
+
+type extensionClient struct {
+	cc *grpc.ClientConn
+}
+
+func NewExtensionClient(cc *grpc.ClientConn) ExtensionClient {
+	return &extensionClient{cc}
+}
+
+func (c *extensionClient) GetExtValue(ctx context.Context, in *SingleGetValueRequest, opts ...grpc.CallOption) (*SingleGetValueResponse, error) {
+	out := new(SingleGetValueResponse)
+	err := c.cc.Invoke(ctx, "/extension.Extension/GetExtValue", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *extensionClient) SetExtValue(ctx context.Context, in *SingleSetValueRequest, opts ...grpc.CallOption) (*SingleSetValueResponse, error) {
+	out := new(SingleSetValueResponse)
+	err := c.cc.Invoke(ctx, "/extension.Extension/SetExtValue", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// ExtensionServer is the server API for Extension service.
+type ExtensionServer interface {
+	// Get a single attribute
+	GetExtValue(context.Context, *SingleGetValueRequest) (*SingleGetValueResponse, error)
+	// Set a single attribute
+	SetExtValue(context.Context, *SingleSetValueRequest) (*SingleSetValueResponse, error)
+}
+
+func RegisterExtensionServer(s *grpc.Server, srv ExtensionServer) {
+	s.RegisterService(&_Extension_serviceDesc, srv)
+}
+
+func _Extension_GetExtValue_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SingleGetValueRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ExtensionServer).GetExtValue(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/extension.Extension/GetExtValue",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ExtensionServer).GetExtValue(ctx, req.(*SingleGetValueRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Extension_SetExtValue_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(SingleSetValueRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ExtensionServer).SetExtValue(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/extension.Extension/SetExtValue",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ExtensionServer).SetExtValue(ctx, req.(*SingleSetValueRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+var _Extension_serviceDesc = grpc.ServiceDesc{
+	ServiceName: "extension.Extension",
+	HandlerType: (*ExtensionServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetExtValue",
+			Handler:    _Extension_GetExtValue_Handler,
+		},
+		{
+			MethodName: "SetExtValue",
+			Handler:    _Extension_SetExtValue_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "voltha_protos/extensions.proto",
+}
diff --git a/vendor/modules.txt b/vendor/modules.txt
index b190e83..649a9c3 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -120,6 +120,7 @@
 # github.com/opencord/voltha-protos/v4 v4.0.5
 github.com/opencord/voltha-protos/v4/go/common
 github.com/opencord/voltha-protos/v4/go/ext/config
+github.com/opencord/voltha-protos/v4/go/extension
 github.com/opencord/voltha-protos/v4/go/inter_container
 github.com/opencord/voltha-protos/v4/go/omci
 github.com/opencord/voltha-protos/v4/go/openflow_13