diff --git a/internal/pkg/types/common.go b/internal/pkg/types/common.go
new file mode 100755
index 0000000..8dbeb0b
--- /dev/null
+++ b/internal/pkg/types/common.go
@@ -0,0 +1,55 @@
+/*
+* Copyright 2022-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 common provides constants.
+package common
+import (
+	"errors"
+)
+
+//AdminState represents Status of an VLAN:ENABLE/DISABLE
+type AdminState string
+
+var (
+	// ErrEntryNotFound is the error when the key doesn't exist in the KVStore
+	ErrEntryNotFound = errors.New("Entry not found")
+)
+// DeviceState refers to the state of device
+type DeviceState string
+
+// Device State constants
+const (
+	DeviceStateDOWN DeviceState = "DOWN"
+	DeviceStateUP   DeviceState = "UP"
+)
+
+// Status represents the status of the request sent to the device manager.
+type Status string
+
+//LogLevel  represents the type of the OLT's LOG
+type LogLevel int
+
+const (
+        // CRITICAL represents log level type of the OLT.
+        CRITICAL LogLevel = iota
+        // ERROR represents log level type of the OLT.
+        ERROR
+        // WARNING represents log level type of the OLT.
+        WARNING
+        // INFO represents log level type of the OLT.
+        INFO
+        // DEBUG represents log level type of the OLT.
+        DEBUG
+)