diff --git a/device/device_onu.go b/device/device_onu.go
index 79a4be2..c8e0c4d 100644
--- a/device/device_onu.go
+++ b/device/device_onu.go
@@ -38,6 +38,7 @@
 	OperState     string
 	SerialNumber  *openolt.SerialNumber
 	OnuID         uint32
+	GemportID     uint16
 	mu            *sync.Mutex
 }
 
@@ -58,6 +59,7 @@
 		onu.SerialNumber = new(openolt.SerialNumber)
 		onu.SerialNumber.VendorId = []byte("BBSM")
 		onu.SerialNumber.VendorSpecific = NewSN(oltid, intfid, uint32(i))
+		onu.GemportID = 0
 		onus = append(onus, &onu)
 	}
 	return onus