diff --git a/openflow_input/circuit b/openflow_input/circuit
index 9377d6d..87be023 100644
--- a/openflow_input/circuit
+++ b/openflow_input/circuit
@@ -79,6 +79,7 @@
     	
 };
 
+
 struct of_circuit_ports_request : of_experimenter_stats_request {
     uint8_t version;
     uint8_t type == 18;
@@ -87,10 +88,11 @@
     uint16_t stats_type == 0xffff;
     enum ofp_stats_request_flags flags;
     pad(4);
-    uint32_t experimenter == 0x5c16c8;
-    uint32_t subtype == 15;
+    uint32_t experimenter == 0x748771;
+    uint32_t subtype == 13;
 };
 
+
 struct of_circuit_ports_reply : of_experimenter_stats_reply {
     uint8_t version;
     uint8_t type == 19;
@@ -99,6 +101,53 @@
     uint16_t stats_type == 0xffff;
     enum ofp_stats_reply_flags flags;
     pad(4);
-    uint32_t experimenter == 0x5c16c8;
-    uint32_t subtype == ?;
+    uint32_t experimenter == 0x748771;
+    uint32_t subtype == 13;
+    list(of_port_optical_t) entries;	
 };
+
+
+struct of_port_optical {
+    of_port_no_t port_no;
+    uint16_t length;
+    pad(2);
+    of_mac_addr_t hw_addr;
+    pad(2);
+    of_port_name_t name;
+    enum ofp_port_config config;
+    enum ofp_port_state state;
+    list(of_port_desc_prop_optical_transport_t) desc; 					
+};
+
+struct of_port_desc_prop_optical_transport {
+   uint16_t type; 
+   uint16_t length;
+   uint8_t port_signal_type; 
+   uint8_t reserved;
+   pad(2);
+};
+
+struct of_port_optical_transport_application_code 
+{
+   uint16_t feature_type; 
+   uint8_t oic_type; 
+   of_app_code_t app_code;
+};
+
+
+struct of_port_optical_transport_layer_entry {
+   uint8_t layer_class; 
+   uint8_t signal_type;
+   uint8_t adaptation;
+   pad(5);
+};
+
+
+/* ODU Layer Stack Feature Encoding */
+struct of_port_optical_transport_layer_stack {
+   uint16_t feature_type; 
+   uint16_t length; 
+   pad(4); 
+   list(of_port_optical_transport_layer_entry_t) entries; 
+};
+