diff --git a/server/controller/trisolaris/vtap/vtap.go b/server/controller/trisolaris/vtap/vtap.go
index 0f17d1b0591..59e4f37b844 100644
--- a/server/controller/trisolaris/vtap/vtap.go
+++ b/server/controller/trisolaris/vtap/vtap.go
@@ -520,9 +520,11 @@ func (v *VTapInfo) GetVTapConfigByNameOrShortUUID(nameOrShortUUID string) *VTapC
 	if v == nil {
 		return nil
 	}
+
 	lcuuid, ok := v.vtapGroupNameOrShortIDToLcuuid[nameOrShortUUID]
-	if !ok {
-		return nil
+	if !ok || lcuuid == "" {
+		log.Warning(v.Logf("not found vtap group (%s) config, use default config", nameOrShortUUID))
+		lcuuid = v.getDefaultVTapGroup()
 	}
 
 	return v.vtapGroupLcuuidToConfiguration[lcuuid]