diff --git a/network_importer/adapters/nautobot_api/models.py b/network_importer/adapters/nautobot_api/models.py
index 22915e1..fe4a0b1 100644
--- a/network_importer/adapters/nautobot_api/models.py
+++ b/network_importer/adapters/nautobot_api/models.py
@@ -124,6 +124,8 @@ def convert_vlan_list_to_nids(vlan_uids):
             nb_params["mode"] = "access"
         elif "switchport_mode" in attrs and attrs["switchport_mode"] == "TRUNK":
             nb_params["mode"] = "tagged"
+        elif "mode" in attrs and attrs["mode"] == "L3_SUB_VLAN":
+            nb_params["mode"] = "tagged"
 
         # if is None:
         #     intf_properties["enabled"] = intf.active