diff --git a/tools/test/topos/access-gw.json b/tools/test/topos/access-gw.json
new file mode 100644
index 0000000..7268110
--- /dev/null
+++ b/tools/test/topos/access-gw.json
@@ -0,0 +1,28 @@
+{
+  "hosts" : {
+    "00:00:00:00:00:01/None" : {
+      "basic" : {
+        "name" : "GW-A1",
+        "roles" : [ "gateway" ], "gridX" : 0.0, "gridY" : 0.0, "locType" : "grid", "uiType" : "router"
+      }
+    },
+    "00:00:00:00:00:02/None" : {
+      "basic" : {
+        "name" : "GW-A2",
+        "roles" : [ "gateway" ], "gridX" : 0.0, "gridY" : 0.0, "locType" : "grid", "uiType" : "router"
+      }
+    },
+    "00:00:00:00:00:0D/None" : {
+      "basic" : {
+        "name" : "GW-B1",
+        "roles" : [ "gateway" ], "gridX" : 0.0, "gridY" : 0.0, "locType" : "grid", "uiType" : "router"
+      }
+    },
+    "00:00:00:00:00:0E/None" : {
+      "basic" : {
+        "name" : "GW-B2",
+        "roles" : [ "gateway" ], "gridX" : 0.0, "gridY" : 0.0, "locType" : "grid", "uiType" : "router"
+      }
+    }
+  }
+}
\ No newline at end of file