diff --git a/vendor/github.com/opencord/voltha-protos/v4/go/voltha/logical_device.pb.go b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/logical_device.pb.go
new file mode 100644
index 0000000..4b96daa
--- /dev/null
+++ b/vendor/github.com/opencord/voltha-protos/v4/go/voltha/logical_device.pb.go
@@ -0,0 +1,349 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: voltha_protos/logical_device.proto
+
+package voltha
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	_ "github.com/opencord/voltha-protos/v4/go/common"
+	openflow_13 "github.com/opencord/voltha-protos/v4/go/openflow_13"
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	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
+
+type LogicalPortId struct {
+	// unique id of logical device
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// id of the port on the logical device
+	PortId               string   `protobuf:"bytes,2,opt,name=port_id,json=portId,proto3" json:"port_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LogicalPortId) Reset()         { *m = LogicalPortId{} }
+func (m *LogicalPortId) String() string { return proto.CompactTextString(m) }
+func (*LogicalPortId) ProtoMessage()    {}
+func (*LogicalPortId) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caf139ab3abc8240, []int{0}
+}
+
+func (m *LogicalPortId) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogicalPortId.Unmarshal(m, b)
+}
+func (m *LogicalPortId) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogicalPortId.Marshal(b, m, deterministic)
+}
+func (m *LogicalPortId) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogicalPortId.Merge(m, src)
+}
+func (m *LogicalPortId) XXX_Size() int {
+	return xxx_messageInfo_LogicalPortId.Size(m)
+}
+func (m *LogicalPortId) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogicalPortId.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogicalPortId proto.InternalMessageInfo
+
+func (m *LogicalPortId) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *LogicalPortId) GetPortId() string {
+	if m != nil {
+		return m.PortId
+	}
+	return ""
+}
+
+type LogicalPort struct {
+	Id                   string                    `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	OfpPort              *openflow_13.OfpPort      `protobuf:"bytes,2,opt,name=ofp_port,json=ofpPort,proto3" json:"ofp_port,omitempty"`
+	DeviceId             string                    `protobuf:"bytes,3,opt,name=device_id,json=deviceId,proto3" json:"device_id,omitempty"`
+	DevicePortNo         uint32                    `protobuf:"varint,4,opt,name=device_port_no,json=devicePortNo,proto3" json:"device_port_no,omitempty"`
+	RootPort             bool                      `protobuf:"varint,5,opt,name=root_port,json=rootPort,proto3" json:"root_port,omitempty"`
+	OfpPortStats         *openflow_13.OfpPortStats `protobuf:"bytes,6,opt,name=ofp_port_stats,json=ofpPortStats,proto3" json:"ofp_port_stats,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}                  `json:"-"`
+	XXX_unrecognized     []byte                    `json:"-"`
+	XXX_sizecache        int32                     `json:"-"`
+}
+
+func (m *LogicalPort) Reset()         { *m = LogicalPort{} }
+func (m *LogicalPort) String() string { return proto.CompactTextString(m) }
+func (*LogicalPort) ProtoMessage()    {}
+func (*LogicalPort) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caf139ab3abc8240, []int{1}
+}
+
+func (m *LogicalPort) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogicalPort.Unmarshal(m, b)
+}
+func (m *LogicalPort) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogicalPort.Marshal(b, m, deterministic)
+}
+func (m *LogicalPort) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogicalPort.Merge(m, src)
+}
+func (m *LogicalPort) XXX_Size() int {
+	return xxx_messageInfo_LogicalPort.Size(m)
+}
+func (m *LogicalPort) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogicalPort.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogicalPort proto.InternalMessageInfo
+
+func (m *LogicalPort) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *LogicalPort) GetOfpPort() *openflow_13.OfpPort {
+	if m != nil {
+		return m.OfpPort
+	}
+	return nil
+}
+
+func (m *LogicalPort) GetDeviceId() string {
+	if m != nil {
+		return m.DeviceId
+	}
+	return ""
+}
+
+func (m *LogicalPort) GetDevicePortNo() uint32 {
+	if m != nil {
+		return m.DevicePortNo
+	}
+	return 0
+}
+
+func (m *LogicalPort) GetRootPort() bool {
+	if m != nil {
+		return m.RootPort
+	}
+	return false
+}
+
+func (m *LogicalPort) GetOfpPortStats() *openflow_13.OfpPortStats {
+	if m != nil {
+		return m.OfpPortStats
+	}
+	return nil
+}
+
+type LogicalPorts struct {
+	Items                []*LogicalPort `protobuf:"bytes,1,rep,name=items,proto3" json:"items,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *LogicalPorts) Reset()         { *m = LogicalPorts{} }
+func (m *LogicalPorts) String() string { return proto.CompactTextString(m) }
+func (*LogicalPorts) ProtoMessage()    {}
+func (*LogicalPorts) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caf139ab3abc8240, []int{2}
+}
+
+func (m *LogicalPorts) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogicalPorts.Unmarshal(m, b)
+}
+func (m *LogicalPorts) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogicalPorts.Marshal(b, m, deterministic)
+}
+func (m *LogicalPorts) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogicalPorts.Merge(m, src)
+}
+func (m *LogicalPorts) XXX_Size() int {
+	return xxx_messageInfo_LogicalPorts.Size(m)
+}
+func (m *LogicalPorts) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogicalPorts.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogicalPorts proto.InternalMessageInfo
+
+func (m *LogicalPorts) GetItems() []*LogicalPort {
+	if m != nil {
+		return m.Items
+	}
+	return nil
+}
+
+type LogicalDevice struct {
+	// unique id of logical device
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// unique datapath id for the logical device (used by the SDN controller)
+	DatapathId uint64 `protobuf:"varint,2,opt,name=datapath_id,json=datapathId,proto3" json:"datapath_id,omitempty"`
+	// device description
+	Desc *openflow_13.OfpDesc `protobuf:"bytes,3,opt,name=desc,proto3" json:"desc,omitempty"`
+	// device features
+	SwitchFeatures *openflow_13.OfpSwitchFeatures `protobuf:"bytes,4,opt,name=switch_features,json=switchFeatures,proto3" json:"switch_features,omitempty"`
+	// name of the root device anchoring logical device
+	RootDeviceId         string   `protobuf:"bytes,5,opt,name=root_device_id,json=rootDeviceId,proto3" json:"root_device_id,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *LogicalDevice) Reset()         { *m = LogicalDevice{} }
+func (m *LogicalDevice) String() string { return proto.CompactTextString(m) }
+func (*LogicalDevice) ProtoMessage()    {}
+func (*LogicalDevice) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caf139ab3abc8240, []int{3}
+}
+
+func (m *LogicalDevice) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogicalDevice.Unmarshal(m, b)
+}
+func (m *LogicalDevice) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogicalDevice.Marshal(b, m, deterministic)
+}
+func (m *LogicalDevice) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogicalDevice.Merge(m, src)
+}
+func (m *LogicalDevice) XXX_Size() int {
+	return xxx_messageInfo_LogicalDevice.Size(m)
+}
+func (m *LogicalDevice) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogicalDevice.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogicalDevice proto.InternalMessageInfo
+
+func (m *LogicalDevice) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *LogicalDevice) GetDatapathId() uint64 {
+	if m != nil {
+		return m.DatapathId
+	}
+	return 0
+}
+
+func (m *LogicalDevice) GetDesc() *openflow_13.OfpDesc {
+	if m != nil {
+		return m.Desc
+	}
+	return nil
+}
+
+func (m *LogicalDevice) GetSwitchFeatures() *openflow_13.OfpSwitchFeatures {
+	if m != nil {
+		return m.SwitchFeatures
+	}
+	return nil
+}
+
+func (m *LogicalDevice) GetRootDeviceId() string {
+	if m != nil {
+		return m.RootDeviceId
+	}
+	return ""
+}
+
+type LogicalDevices struct {
+	Items                []*LogicalDevice `protobuf:"bytes,1,rep,name=items,proto3" json:"items,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
+}
+
+func (m *LogicalDevices) Reset()         { *m = LogicalDevices{} }
+func (m *LogicalDevices) String() string { return proto.CompactTextString(m) }
+func (*LogicalDevices) ProtoMessage()    {}
+func (*LogicalDevices) Descriptor() ([]byte, []int) {
+	return fileDescriptor_caf139ab3abc8240, []int{4}
+}
+
+func (m *LogicalDevices) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_LogicalDevices.Unmarshal(m, b)
+}
+func (m *LogicalDevices) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_LogicalDevices.Marshal(b, m, deterministic)
+}
+func (m *LogicalDevices) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_LogicalDevices.Merge(m, src)
+}
+func (m *LogicalDevices) XXX_Size() int {
+	return xxx_messageInfo_LogicalDevices.Size(m)
+}
+func (m *LogicalDevices) XXX_DiscardUnknown() {
+	xxx_messageInfo_LogicalDevices.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_LogicalDevices proto.InternalMessageInfo
+
+func (m *LogicalDevices) GetItems() []*LogicalDevice {
+	if m != nil {
+		return m.Items
+	}
+	return nil
+}
+
+func init() {
+	proto.RegisterType((*LogicalPortId)(nil), "voltha.LogicalPortId")
+	proto.RegisterType((*LogicalPort)(nil), "voltha.LogicalPort")
+	proto.RegisterType((*LogicalPorts)(nil), "voltha.LogicalPorts")
+	proto.RegisterType((*LogicalDevice)(nil), "voltha.LogicalDevice")
+	proto.RegisterType((*LogicalDevices)(nil), "voltha.LogicalDevices")
+}
+
+func init() { proto.RegisterFile("voltha_protos/logical_device.proto", fileDescriptor_caf139ab3abc8240) }
+
+var fileDescriptor_caf139ab3abc8240 = []byte{
+	// 456 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x92, 0xc1, 0x6a, 0xdb, 0x40,
+	0x10, 0x86, 0x91, 0x63, 0x3b, 0xce, 0xca, 0x51, 0x40, 0x21, 0x54, 0x24, 0x85, 0x08, 0xd1, 0x83,
+	0x43, 0xa9, 0xd4, 0x3a, 0x3d, 0xb4, 0x87, 0x1e, 0x1a, 0x42, 0xc0, 0x50, 0xda, 0xb2, 0x85, 0x1e,
+	0x7a, 0x11, 0x1b, 0xed, 0x5a, 0x5e, 0x90, 0x35, 0x42, 0xbb, 0x71, 0x5e, 0xb6, 0x4f, 0xd1, 0x27,
+	0x28, 0x3b, 0xbb, 0x6a, 0xa5, 0x38, 0x47, 0xfd, 0xf3, 0xcd, 0xcc, 0x3f, 0xff, 0x8a, 0x24, 0x3b,
+	0xa8, 0xf4, 0x86, 0xe5, 0x4d, 0x0b, 0x1a, 0x54, 0x56, 0x41, 0x29, 0x0b, 0x56, 0xe5, 0x5c, 0xec,
+	0x64, 0x21, 0x52, 0x54, 0xc3, 0xa9, 0x65, 0xce, 0x5f, 0x96, 0x00, 0x65, 0x25, 0x32, 0xd6, 0xc8,
+	0x8c, 0xd5, 0x35, 0x68, 0xa6, 0x25, 0xd4, 0xca, 0x52, 0xe7, 0xd1, 0x70, 0xd2, 0x56, 0x68, 0xe6,
+	0x2a, 0x97, 0xc3, 0x0a, 0x34, 0xa2, 0x5e, 0x57, 0xf0, 0x98, 0xbf, 0xbb, 0xb6, 0x40, 0xf2, 0x81,
+	0x1c, 0x7f, 0xb1, 0x8b, 0xbf, 0x43, 0xab, 0x57, 0x3c, 0x0c, 0xc8, 0x48, 0xf2, 0xc8, 0x8b, 0xbd,
+	0xc5, 0x11, 0x1d, 0x49, 0x1e, 0xbe, 0x20, 0x87, 0x0d, 0xb4, 0x3a, 0x97, 0x3c, 0x1a, 0xa1, 0x38,
+	0x6d, 0x10, 0x4c, 0xfe, 0x78, 0xc4, 0xef, 0xb5, 0xee, 0x35, 0xbe, 0x25, 0x33, 0x58, 0x37, 0xb9,
+	0xa1, 0xb1, 0xd3, 0x5f, 0x9e, 0xa5, 0xfd, 0xfd, 0x5d, 0x91, 0x1e, 0xc2, 0xba, 0xc1, 0x09, 0x17,
+	0xe4, 0xc8, 0x1e, 0x6f, 0x96, 0x1d, 0xe0, 0xa0, 0x99, 0x15, 0x56, 0x3c, 0x7c, 0x45, 0x02, 0x57,
+	0x44, 0x3b, 0x35, 0x44, 0xe3, 0xd8, 0x5b, 0x1c, 0xd3, 0xb9, 0x55, 0xcd, 0x80, 0xaf, 0x60, 0x46,
+	0xb4, 0x00, 0xda, 0x6e, 0x9d, 0xc4, 0xde, 0x62, 0x46, 0x67, 0x46, 0xc0, 0xf9, 0x9f, 0x49, 0xd0,
+	0x2d, 0xcd, 0x95, 0x66, 0x5a, 0x45, 0x53, 0xf4, 0x75, 0xf1, 0xac, 0x2f, 0x8b, 0xd0, 0xb9, 0x73,
+	0xf7, 0xc3, 0x7c, 0x25, 0x1f, 0xc9, 0xbc, 0x77, 0xb3, 0x0a, 0xaf, 0xc8, 0x44, 0x6a, 0xb1, 0x55,
+	0x91, 0x17, 0x1f, 0x2c, 0xfc, 0xe5, 0x69, 0x6a, 0xf3, 0x4e, 0x7b, 0x10, 0xb5, 0x44, 0xf2, 0xdb,
+	0xfb, 0x17, 0xf5, 0x2d, 0x5a, 0xde, 0x4b, 0xec, 0x92, 0xf8, 0x9c, 0x69, 0xd6, 0x30, 0xbd, 0xe9,
+	0xe2, 0x1e, 0x53, 0xd2, 0x49, 0x2b, 0x1e, 0x5e, 0x91, 0x31, 0x17, 0xaa, 0xc0, 0x6c, 0x9e, 0x8b,
+	0xd3, 0x14, 0x29, 0x22, 0xe1, 0x8a, 0x9c, 0xa8, 0x47, 0xa9, 0x8b, 0x4d, 0xbe, 0x16, 0x4c, 0x3f,
+	0xb4, 0x42, 0x61, 0x5e, 0xfe, 0x32, 0xde, 0xeb, 0x7a, 0xc2, 0xd1, 0xc0, 0x0a, 0x77, 0xee, 0xdb,
+	0x24, 0x8f, 0x99, 0xfe, 0x7f, 0x9b, 0x09, 0x5a, 0x9e, 0x1b, 0xf5, 0xd6, 0xbd, 0x4f, 0xf2, 0x89,
+	0x04, 0x83, 0xeb, 0x54, 0xf8, 0x7a, 0x98, 0xcd, 0xd9, 0x93, 0x6c, 0x2c, 0xe6, 0xd2, 0xb9, 0xf9,
+	0x49, 0x4e, 0xa1, 0x2d, 0xd1, 0x5b, 0x01, 0x2d, 0x77, 0xec, 0xcd, 0xc9, 0xb7, 0xbb, 0x01, 0xfe,
+	0x2b, 0x2d, 0xa5, 0xde, 0x3c, 0xdc, 0xa7, 0x05, 0x6c, 0xb3, 0x0e, 0xce, 0x2c, 0xfc, 0xc6, 0xfd,
+	0xe4, 0xbb, 0xf7, 0x59, 0x09, 0x4e, 0xbb, 0x9f, 0xa2, 0x78, 0xfd, 0x37, 0x00, 0x00, 0xff, 0xff,
+	0xda, 0x87, 0xca, 0xb8, 0x6d, 0x03, 0x00, 0x00,
+}