diff --git a/src/test/resources/xconnect-invalid.json b/src/test/resources/xconnect-invalid.json
new file mode 100644
index 0000000..aa35f31
--- /dev/null
+++ b/src/test/resources/xconnect-invalid.json
@@ -0,0 +1,18 @@
+{
+  "of:0000000000000001": [
+    {
+      "vlan": 10,
+      "ports": [3, 4]
+    }
+  ],
+  "of:0000000000000002": [
+    {
+      "vlan": 10,
+      "ports": [3, 4]
+    },
+    {
+      "vlan": 20,
+      "ports": [4, 5, 6]
+    }
+  ]
+}
\ No newline at end of file