diff --git a/internal/pkg/devdb/onu_device_db.go b/internal/pkg/devdb/onu_device_db.go
index 627d31c..9c4e126 100755
--- a/internal/pkg/devdb/onu_device_db.go
+++ b/internal/pkg/devdb/onu_device_db.go
@@ -158,6 +158,13 @@
 	return meInstKeys
 }
 
+//GetNumberOfInst returns the number of instances of an ME
+func (OnuDeviceDB *OnuDeviceDB) GetNumberOfInst(meClassID me.ClassID) int {
+	OnuDeviceDB.meDbLock.RLock()
+	defer OnuDeviceDB.meDbLock.RUnlock()
+	return len(OnuDeviceDB.MeDb[meClassID])
+}
+
 //LogMeDb logs content of internal ONU DB
 func (OnuDeviceDB *OnuDeviceDB) LogMeDb(ctx context.Context) {
 	logger.Debugw(ctx, "ME instances stored for :", log.Fields{"device-id": OnuDeviceDB.deviceID})