diff --git a/bridge-port-toggle b/bridge-port-toggle
new file mode 100644
index 0000000..978ed2c
--- /dev/null
+++ b/bridge-port-toggle
@@ -0,0 +1,15 @@
+#!rsc
+# RouterOS script: bridge-port-toggle
+# Copyright (c) 2013-2018 Christian Hesse <mail@eworm.de>
+#
+# toggle bridge ports between default and alt bridge
+
+:global "bridge-port-to";
+
+:if ($"bridge-port-to" != "default") do={
+  :set "bridge-port-to" "default";
+} else={
+  :set "bridge-port-to" "alt";
+}
+
+/ system script run bridge-port-to-default;
diff --git a/global-config b/global-config
index 96843cc..91c9e74 100644
--- a/global-config
+++ b/global-config
@@ -47,6 +47,7 @@
   1="/ system script run leds-toggle-mode;";
   2="/ system shutdown;";
   3="/ system reboot;";
+  4="/ system script run bridge-port-toggle;";
 # add more here...
 };