diff --git a/roles/multi-node-setup/defaults/main.yaml b/roles/multi-node-setup/defaults/main.yaml
new file mode 100644
index 0000000..f166fe7
--- /dev/null
+++ b/roles/multi-node-setup/defaults/main.yaml
@@ -0,0 +1,2 @@
+infra_bridge_name: br-infra
+neutron_external_bridge_name: br-ex