diff --git a/cli/menu/mainmenu/Makefile b/cli/menu/mainmenu/Makefile
new file mode 100644
index 0000000..fd522a5
--- /dev/null
+++ b/cli/menu/mainmenu/Makefile
@@ -0,0 +1,13 @@
+VOLTHA_PROTO_PATH := protos/voltha_protos
+VOLTHA_PROTO_FILES := $(wildcard protos/voltha_protos/*.proto)
+VOLTHA_PROTO_GO_FILES := $(foreach f,$(VOLTHA_PROTO_FILES),$(subst .proto,.pb.go,$(f)))
+VOLTHA_PROTO_DESC_FILES := $(foreach f,$(VOLTHA_PROTO_FILES),$(subst .proto,.desc,$(f)))
+
+voltha-api: $(VOLTHA_PROTO_GO_FILES)
+
+%.pb.go: %.proto
+	@protoc -I ${VOLTHA_PROTO_PATH} \
+                --go_out=plugins=grpc:${VOLTHA_PROTO_PATH} \
+                -I${GOPATH}/src \
+                -I${GOPATH}/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis \
+                $<
diff --git a/cli/menu/mainmenu/alarmFilters.go b/cli/menu/mainmenu/alarmFilters.go
new file mode 100644
index 0000000..4a1b274
--- /dev/null
+++ b/cli/menu/mainmenu/alarmFilters.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doAlarmFilters(enterPressed bool) {
+	fmt.Print("input: alarm_filters>")
+}
diff --git a/cli/menu/mainmenu/arriveOnus.go b/cli/menu/mainmenu/arriveOnus.go
new file mode 100644
index 0000000..75e6263
--- /dev/null
+++ b/cli/menu/mainmenu/arriveOnus.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doArriveOnus(enterPressed bool) {
+	fmt.Print("input: arrive_onus>")
+}
diff --git a/cli/menu/mainmenu/cmdEnvironment.go b/cli/menu/mainmenu/cmdEnvironment.go
new file mode 100644
index 0000000..0342e87
--- /dev/null
+++ b/cli/menu/mainmenu/cmdEnvironment.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doCmdEnvironment(enterPressed bool) {
+	fmt.Println("input: doCmdEnvironment> ")
+}
diff --git a/cli/menu/mainmenu/delete.go b/cli/menu/mainmenu/delete.go
new file mode 100644
index 0000000..9b9f49b
--- /dev/null
+++ b/cli/menu/mainmenu/delete.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doDelete(enterPressed bool) {
+	fmt.Println("input: delete > ")
+}
diff --git a/cli/menu/mainmenu/deleteAllFlows.go b/cli/menu/mainmenu/deleteAllFlows.go
new file mode 100644
index 0000000..9888fa9
--- /dev/null
+++ b/cli/menu/mainmenu/deleteAllFlows.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doDeleteAllFlows(enterPressed bool) {
+	fmt.Print("input: delete_all_flows>")
+}
diff --git a/cli/menu/mainmenu/device.go b/cli/menu/mainmenu/device.go
new file mode 100644
index 0000000..45b35a9
--- /dev/null
+++ b/cli/menu/mainmenu/device.go
@@ -0,0 +1,87 @@
+/*
+   * 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 mainmenu
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/golang/protobuf/ptypes/empty"
+	"github.com/opencord/voltha-go/cli/menu/devicemenu"
+	"github.com/opencord/voltha-go/cli/util"
+	"github.com/opencord/voltha-protos/go/voltha"
+)
+
+func doDevice(enterPressed bool) {
+	fmt.Print(" ")
+	client := voltha.NewVolthaServiceClient(Conn)
+	devices, err := client.ListDevices(context.Background(), &empty.Empty{})
+	items := devices.GetItems()
+	if err != nil {
+		fmt.Println(err)
+	}
+	deviceIds := []string{"exit", "quit"}
+	for i := 0; i < len(items); i++ {
+		deviceIds = append(deviceIds, items[i].Id)
+	}
+	var b = make([]byte, 1)
+	input := ""
+
+	for {
+		os.Stdin.Read(b)
+		char := string(b)
+		if char == "\t" || char == "\n" || char == "?" {
+			fmt.Println("")
+			ret, prompt := util.Test(input, deviceIds)
+			if len(ret) == 1 {
+				input = ret[0]
+				if input == "quit" {
+					util.Exit(true)
+				} else if input == "exit" {
+					return
+				}
+
+				devicemenu.MainLoop(Conn, input)
+				return
+			} else if len(ret) == 0 {
+				input = ""
+				fmt.Print("Invalid Input \ninput:")
+			} else {
+
+				fmt.Println(ret)
+				input = prompt
+				fmt.Print("input: " + prompt)
+			}
+		} else if b[0] == 127 || char == "\b" {
+
+			sz := len(input)
+			if sz > 0 {
+				fmt.Print("\b \b")
+				input = input[:sz-1]
+			}
+			if !(strings.HasPrefix(input, "device")) {
+				return
+			}
+		} else {
+			fmt.Print(char)
+			input += char
+		}
+	}
+
+}
diff --git a/cli/menu/mainmenu/devices.go b/cli/menu/mainmenu/devices.go
new file mode 100644
index 0000000..f5ef716
--- /dev/null
+++ b/cli/menu/mainmenu/devices.go
@@ -0,0 +1,78 @@
+/*
+   * 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 mainmenu
+
+import (
+	"context"
+	"fmt"
+	"strconv"
+
+	"github.com/golang/protobuf/ptypes/empty"
+	"github.com/opencord/voltha-go/cli/util"
+	"github.com/opencord/voltha-protos/go/voltha"
+)
+
+/*
+ reason | proxy_address.device_id | proxy_address.onu_id | proxy_address.onu_session_id |
+*/
+func doDevices(enterPressed bool) {
+
+	client := voltha.NewVolthaServiceClient(Conn)
+	devices, err := client.ListDevices(context.Background(), &empty.Empty{})
+	if err != nil {
+		fmt.Println(err)
+	}
+	var rows []map[string]string
+	items := devices.GetItems()
+	var fields = []string{"id", "type", "root", "parent_id", "serial_number", "admin_state", "oper_status", "connect_status", "parent_port_no", "host_and_port", "reason",
+		"proxy_address.device_id", "proxy_address.onu_id", "proxy_address.onu_session_id"}
+
+	for i := 0; i < len(items); i++ {
+		//fmt.Println(items[i])
+		device := items[i]
+		row := make(map[string]string)
+		row["id"] = device.Id
+		row["type"] = device.Type
+		row["root"] = strconv.FormatBool(device.Root)
+		row["parent_id"] = device.ParentId
+		row["serial_number"] = device.SerialNumber
+		row["admin_state"] = device.AdminState.String()
+		row["oper_status"] = device.OperStatus.String()
+		row["connect_status"] = device.ConnectStatus.String()
+		row["parent_port_no"] = strconv.FormatUint(uint64(device.GetParentPortNo()), 10)
+		row["host_and_port"] = device.GetHostAndPort()
+		row["reason"] = device.Reason
+		proxyAddress := device.GetProxyAddress()
+		if proxyAddress != nil {
+			row["proxy_address.device_id"] = proxyAddress.DeviceId
+			row["proxy_address.onu_id"] = strconv.FormatUint(uint64(proxyAddress.OnuId), 10)
+			row["proxy_address.onu_session_id"] = strconv.FormatUint(uint64(proxyAddress.OnuSessionId), 10)
+		} else {
+			row["proxy_address.device_id"] = ""
+			row["proxy_address.onu_id"] = ""
+			row["proxy_address.onu_session_id"] = ""
+		}
+
+		rows = append(rows, row)
+	}
+	output, err := util.BuildTable(fields, rows)
+	if err != nil {
+		fmt.Println(err)
+	}
+	fmt.Print(output)
+
+}
diff --git a/cli/menu/mainmenu/disable.go b/cli/menu/mainmenu/disable.go
new file mode 100644
index 0000000..45d86af
--- /dev/null
+++ b/cli/menu/mainmenu/disable.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doDisable(enterPressed bool) {
+	fmt.Print("input: disable>")
+}
diff --git a/cli/menu/mainmenu/enable.go b/cli/menu/mainmenu/enable.go
new file mode 100644
index 0000000..3068c72
--- /dev/null
+++ b/cli/menu/mainmenu/enable.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doEnable(enterPressed bool) {
+	fmt.Print("input: enable>")
+}
diff --git a/cli/menu/mainmenu/health.go b/cli/menu/mainmenu/health.go
new file mode 100644
index 0000000..562ff9b
--- /dev/null
+++ b/cli/menu/mainmenu/health.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doHealth(enterPressed bool) {
+	fmt.Print("input: health>")
+}
diff --git a/cli/menu/mainmenu/injectEapolStart.go b/cli/menu/mainmenu/injectEapolStart.go
new file mode 100644
index 0000000..8015013
--- /dev/null
+++ b/cli/menu/mainmenu/injectEapolStart.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doInjectEapolStart(enterPressed bool) {
+	fmt.Print("input: inject_eapol_start>")
+}
diff --git a/cli/menu/mainmenu/installAllControllerBoundFlows.go b/cli/menu/mainmenu/installAllControllerBoundFlows.go
new file mode 100644
index 0000000..c994831
--- /dev/null
+++ b/cli/menu/mainmenu/installAllControllerBoundFlows.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doInstallAllControllerBoundFlows(enterPressed bool) {
+	fmt.Print("input: install_all_controller_bound_flows>")
+}
diff --git a/cli/menu/mainmenu/installAllSampleFlows.go b/cli/menu/mainmenu/installAllSampleFlows.go
new file mode 100644
index 0000000..a9d08e4
--- /dev/null
+++ b/cli/menu/mainmenu/installAllSampleFlows.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doInstallAllSampleFlows(enterPressed bool) {
+	fmt.Print("input: install_all_sample_flows>")
+}
diff --git a/cli/menu/mainmenu/installDhcpFlows.go b/cli/menu/mainmenu/installDhcpFlows.go
new file mode 100644
index 0000000..799867d
--- /dev/null
+++ b/cli/menu/mainmenu/installDhcpFlows.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doInstallDhcpFlows(enterPressed bool) {
+	fmt.Print("input: install_dhcp_flows>")
+}
diff --git a/cli/menu/mainmenu/installEapolFlow.go b/cli/menu/mainmenu/installEapolFlow.go
new file mode 100644
index 0000000..2a76bae
--- /dev/null
+++ b/cli/menu/mainmenu/installEapolFlow.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doInstallEapolFlow(enterPressed bool) {
+	fmt.Print("input: install_eapol_flow>")
+}
diff --git a/cli/menu/mainmenu/launch.go b/cli/menu/mainmenu/launch.go
new file mode 100644
index 0000000..818e5a4
--- /dev/null
+++ b/cli/menu/mainmenu/launch.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doLaunch(enterPressed bool) {
+	fmt.Print("input: launch")
+}
diff --git a/cli/menu/mainmenu/load.go b/cli/menu/mainmenu/load.go
new file mode 100644
index 0000000..20fd7c7
--- /dev/null
+++ b/cli/menu/mainmenu/load.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doLoad(enterPressed bool) {
+	fmt.Println("input: load>")
+}
diff --git a/cli/menu/mainmenu/log.go b/cli/menu/mainmenu/log.go
new file mode 100644
index 0000000..d94c4cf
--- /dev/null
+++ b/cli/menu/mainmenu/log.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doLog(enterPressed bool) {
+	fmt.Print("input: log>")
+}
diff --git a/cli/menu/mainmenu/logicalDevice.go b/cli/menu/mainmenu/logicalDevice.go
new file mode 100644
index 0000000..9e306ec
--- /dev/null
+++ b/cli/menu/mainmenu/logicalDevice.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doLogicalDevice(enterPressed bool) {
+	fmt.Print("input: logical_device>")
+}
diff --git a/cli/menu/mainmenu/logicalDevices.go b/cli/menu/mainmenu/logicalDevices.go
new file mode 100644
index 0000000..5d6f2fc
--- /dev/null
+++ b/cli/menu/mainmenu/logicalDevices.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doLogicalDevices(enterPressed bool) {
+	fmt.Print("input: logical_devices>")
+}
diff --git a/cli/menu/mainmenu/mainMenu.go b/cli/menu/mainmenu/mainMenu.go
new file mode 100644
index 0000000..3d57892
--- /dev/null
+++ b/cli/menu/mainmenu/mainMenu.go
@@ -0,0 +1,75 @@
+/*
+   * 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 mainmenu
+
+import (
+	"fmt"
+
+	"github.com/bclicn/color"
+	"github.com/opencord/voltha-go/cli/util"
+	"google.golang.org/grpc"
+)
+
+/*
+Conn - the grpc connection to use for making calls to voltha core
+*/
+var Conn *grpc.ClientConn
+
+/*
+MainLoop - the loop which processes commands at the main level
+*/
+func MainLoop(conn *grpc.ClientConn) {
+
+	inputPrompt := fmt.Sprint("(" + color.LightBlue("voltha") + ") ")
+	//	inputPromptSize := len(inputPrompt)
+	Conn = conn
+	mainFuncTable := make(map[string]func(bool))
+	mainFuncTable["quit"] = util.Exit
+	mainFuncTable["exit"] = nil
+	mainFuncTable["cmdenvironment"] = doCmdEnvironment
+	mainFuncTable["load"] = doLoad
+	mainFuncTable["relative_load"] = doRelativeLoad
+	mainFuncTable["reset_history"] = doResetHistory
+	mainFuncTable["log"] = doLog
+	mainFuncTable["launch"] = doLaunch
+	mainFuncTable["restart"] = doRestart
+	mainFuncTable["devices"] = doDevices
+	mainFuncTable["device"] = doDevice
+	mainFuncTable["logical_devices"] = doLogicalDevices
+	mainFuncTable["logical_device"] = doLogicalDevice
+	mainFuncTable["omci"] = doOmci
+	mainFuncTable["pdb"] = doPdb
+	mainFuncTable["version"] = doVersion
+	mainFuncTable["health"] = doHealth
+	mainFuncTable["preprovison_olt"] = doPreprovisionOlt
+	mainFuncTable["enable"] = doEnable
+	mainFuncTable["reboot"] = doReboot
+	mainFuncTable["self_test"] = doSelfTest
+	mainFuncTable["delete"] = doDelete
+	mainFuncTable["disable"] = doDisable
+	mainFuncTable["test"] = doTest
+	mainFuncTable["alarm_filters"] = doAlarmFilters
+	mainFuncTable["arrive_onus"] = doArriveOnus
+	mainFuncTable["install_eapol_flow"] = doInstallEapolFlow
+	mainFuncTable["install_all_controller_bound_flows"] = doInstallAllControllerBoundFlows
+	mainFuncTable["install_all_sample_flows"] = doInstallAllSampleFlows
+	mainFuncTable["install_dhcp_flows"] = doInstallDhcpFlows
+	mainFuncTable["delete_all_flows"] = doDeleteAllFlows
+	mainFuncTable["send_simulated_upstream_eapol"] = doSendSimulatedUpstreamEapol
+	mainFuncTable["inject_eapol_start"] = doInjectEapolStart
+	util.ProcessTable(mainFuncTable, inputPrompt)
+}
diff --git a/cli/menu/mainmenu/omci.go b/cli/menu/mainmenu/omci.go
new file mode 100644
index 0000000..98d3328
--- /dev/null
+++ b/cli/menu/mainmenu/omci.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doOmci(enterPressed bool) {
+	fmt.Print("input: ocmi>")
+}
diff --git a/cli/menu/mainmenu/pdb.go b/cli/menu/mainmenu/pdb.go
new file mode 100644
index 0000000..32b9035
--- /dev/null
+++ b/cli/menu/mainmenu/pdb.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doPdb(enterPressed bool) {
+	fmt.Print("input: pdb>")
+}
diff --git a/cli/menu/mainmenu/preprovisionOlt.go b/cli/menu/mainmenu/preprovisionOlt.go
new file mode 100644
index 0000000..f185b14
--- /dev/null
+++ b/cli/menu/mainmenu/preprovisionOlt.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doPreprovisionOlt(enterPressed bool) {
+	fmt.Print("input preprovision_olt>")
+}
diff --git a/cli/menu/mainmenu/reboot.go b/cli/menu/mainmenu/reboot.go
new file mode 100644
index 0000000..a0a4b12
--- /dev/null
+++ b/cli/menu/mainmenu/reboot.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doReboot(enterPressed bool) {
+	fmt.Print("input: reboot>")
+}
diff --git a/cli/menu/mainmenu/relativeLoad.go b/cli/menu/mainmenu/relativeLoad.go
new file mode 100644
index 0000000..ab492b4
--- /dev/null
+++ b/cli/menu/mainmenu/relativeLoad.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doRelativeLoad(enterPressed bool) {
+	fmt.Print("input: relative_load>")
+}
diff --git a/cli/menu/mainmenu/resetHistory.go b/cli/menu/mainmenu/resetHistory.go
new file mode 100644
index 0000000..61187a5
--- /dev/null
+++ b/cli/menu/mainmenu/resetHistory.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doResetHistory(enterPressed bool) {
+	fmt.Print("input: reset_history>")
+}
diff --git a/cli/menu/mainmenu/restart.go b/cli/menu/mainmenu/restart.go
new file mode 100644
index 0000000..62ce7e1
--- /dev/null
+++ b/cli/menu/mainmenu/restart.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doRestart(enterPressed bool) {
+	fmt.Print("input: restart>")
+}
diff --git a/cli/menu/mainmenu/selfTest.go b/cli/menu/mainmenu/selfTest.go
new file mode 100644
index 0000000..f25e6fb
--- /dev/null
+++ b/cli/menu/mainmenu/selfTest.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doSelfTest(enterPressed bool) {
+	fmt.Print("input: self_test>")
+}
diff --git a/cli/menu/mainmenu/sendSimulatedUpstreamEapol.go b/cli/menu/mainmenu/sendSimulatedUpstreamEapol.go
new file mode 100644
index 0000000..c82b0df
--- /dev/null
+++ b/cli/menu/mainmenu/sendSimulatedUpstreamEapol.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doSendSimulatedUpstreamEapol(enterPressed bool) {
+	fmt.Print("input: send_simulated_upstream_eapol>")
+}
diff --git a/cli/menu/mainmenu/test.go b/cli/menu/mainmenu/test.go
new file mode 100644
index 0000000..96e3f0a
--- /dev/null
+++ b/cli/menu/mainmenu/test.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doTest(enterPressed bool) {
+	fmt.Print("input: test>")
+}
diff --git a/cli/menu/mainmenu/version.go b/cli/menu/mainmenu/version.go
new file mode 100644
index 0000000..7464c1b
--- /dev/null
+++ b/cli/menu/mainmenu/version.go
@@ -0,0 +1,23 @@
+/*
+   * 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 mainmenu
+
+import "fmt"
+
+func doVersion(enterPressed bool) {
+	fmt.Print("input: version>")
+}