diff --git a/internal/pkg/core/l2oam/onu_msg_get_onu_system_info.go b/internal/pkg/core/l2oam/onu_msg_get_onu_system_info.go
new file mode 100644
index 0000000..6dd13d8
--- /dev/null
+++ b/internal/pkg/core/l2oam/onu_msg_get_onu_system_info.go
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2020-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 l2oam
+
+import (
+	"github.com/google/gopacket"
+)
+
+// GenerateOnuSystemInfo generates "ONU System Information" message
+func GenerateOnuSystemInfo(PkgType string) gopacket.SerializableLayer {
+
+	if PkgType == OnuPkgTypeA {
+		//TypeA
+		data := &TibitFrame{
+			Data: []byte{
+				0x03, 0x00, 0x50, 0xfe, 0x00, 0x10, 0x00, 0x01,
+				0xd7, 0x00, 0x06, 0x00, 0x00,
+			},
+		}
+
+		return data
+	} else if PkgType == OnuPkgTypeB {
+		//TypeB
+		data := &TibitFrame{
+			Data: []byte{
+				0x03, 0x00, 0x50, 0xfe, 0x90, 0x82, 0x60, 0x00,
+				0xca, 0xfe, 0x00, 0xb7, 0x00, 0x40, 0x00, 0x00,
+			},
+		}
+
+		return data
+	}
+
+	return nil
+}
+
+// GetOnuSerialNo returns a serial number
+func GetOnuSerialNo(pkgType string, data []byte) string {
+	if pkgType == OnuPkgTypeA {
+		// 030050fe00100002 00 - 07
+		// d70006404d493920 08 - 15
+		// 32304b2042303041 16 - 23
+		// 3730204130302031 24 - 31
+		// 3730382020202020
+		// 2000000030313233
+		// 3435363730313233
+		// 3435363738394041
+		// 42434445
+		return string(data[20:26])
+	}
+	return ""
+}
+
+// GetOnuManufacture returns a manufacture information
+func GetOnuManufacture(pkgType string, data []byte) string {
+	if pkgType == OnuPkgTypeA {
+		if data[16] == 0x32 && data[17] == 0x30 && data[18] == 0x4b {
+			return "FURUKAWA"
+		}
+	}
+	return ""
+}