diff --git a/cluster.yml b/cluster.yml
new file mode 100644
index 0000000..940f8e7
--- /dev/null
+++ b/cluster.yml
@@ -0,0 +1,22 @@
+nodes:
+  - name: node1
+    program: ./programs/node1.hal
+  - name: node2
+    program: ./programs/node2.hal
+  - name: node3
+    program: ./programs/node3.hal
+  - name: node4
+    program: ./programs/node4.hal
+connections:
+  - source_node: node1
+    source_port: 3
+    dest_node: node2
+    dest_port: 2
+  - source_node: node2
+    source_port: 3
+    dest_node: node3
+    dest_port: 2
+  - source_node: node3
+    source_port: 3
+    dest_node: node4
+    dest_port: 2