diff --git a/src/opticalcontroller/OpticalController.py b/src/opticalcontroller/OpticalController.py
index 74fd7882689d92a654a749ea5be0c2583841a31b..9cf0f67334037e90b1d58fffb0e8a8e9ba6259db 100644
--- a/src/opticalcontroller/OpticalController.py
+++ b/src/opticalcontroller/OpticalController.py
@@ -15,6 +15,7 @@
 import logging, time
 from flask import Flask
 from flask import render_template
+from common.DeviceTypes import DeviceTypeEnum
 from flask_restplus import Resource, Api
 from google.protobuf.json_format import MessageToDict
 from common.proto.context_pb2 import TopologyId
@@ -317,7 +318,44 @@ class GetTopology(Resource):
             node_dict = {}
             topo, nodes = readTopologyDataFromContext(topog_id)
 
-            for link in topo: 
+            OPTICAL_ROADM_TYPES = {
+                DeviceTypeEnum.OPTICAL_ROADM.value, DeviceTypeEnum.EMULATED_OPTICAL_ROADM.value
+            }
+            OPTICAL_TRANSPONDER_TYPES = {
+                DeviceTypeEnum.OPTICAL_TRANSPONDER.value, DeviceTypeEnum.EMULATED_OPTICAL_TRANSPONDER.value
+            }
+            added_device_uuids = set()
+            for device in nodes:
+                if device.device_type in OPTICAL_ROADM_TYPES:
+                    dev_type = "OC-ROADM"
+                elif device.device_type in OPTICAL_TRANSPONDER_TYPES:
+                    dev_type = "OC-TP"
+                else:
+                    continue
+
+                dev_dic = {
+                    "id":device.device_id.device_uuid.uuid,
+                    #"ip":f"10.30.2.{207+i}",
+                    #"port":"50001",
+                    "type": dev_type,
+                    "driver": "OpticalOC"
+                }
+                node_dict[device.name] = dev_dic
+                added_device_uuids.add(device.device_id.device_uuid.uuid)
+                #i+=1
+                #print(f"refresh_optical controller optical_links_dict= {links_dict}")
+                #print(f"refresh_optical controller node_dict  {node_dict}")
+
+            for link in topo:
+                endpoint_id_a = link.link_endpoint_ids[ 0]
+                endpoint_id_z = link.link_endpoint_ids[-1]
+
+                device_uuid_a = endpoint_id_a.device_id.device_uuid.uuid
+                if device_uuid_a not in added_device_uuids: continue
+
+                device_uuid_z = endpoint_id_z.device_id.device_uuid.uuid
+                if device_uuid_z not in added_device_uuids: continue
+
                 link_dict_type = MessageToDict(link, preserving_proto_field_name=True)
 
                 if "c_slots" in link_dict_type["optical_details"]:
@@ -331,19 +369,6 @@ class GetTopology(Resource):
 
                 links_dict["optical_links"].append(link_dict_type)
 
-            for device in nodes :
-                dev_dic = {
-                    "id":device.device_id.device_uuid.uuid,
-                    #"ip":f"10.30.2.{207+i}",
-                    #"port":"50001",
-                    "type":"OC-ROADM" if device.device_type =="optical-roadm" else "OC-TP",
-                    "driver": "OpticalOC"
-                }
-                node_dict[device.name] = dev_dic
-                #i+=1
-                #print(f"refresh_optical controller optical_links_dict= {links_dict}")
-                #print(f"refresh_optical controller node_dict  {node_dict}")
-
             rsa = RSA(node_dict, links_dict)
             if debug:
                 print(rsa.init_link_slots2())
@@ -354,4 +379,4 @@ class GetTopology(Resource):
             return "Error", 400
 
 if __name__ == '__main__':
-    app.run(host='0.0.0.0', port=10060)
+    app.run(host='0.0.0.0', port=10060, debug=True)
diff --git a/src/opticalcontroller/RSA.py b/src/opticalcontroller/RSA.py
index da31187eb1d5c3f6f51cbbdc1c9641653b683e4b..e5cf6e4065f0daf116fa623b93f0dea36215b457 100644
--- a/src/opticalcontroller/RSA.py
+++ b/src/opticalcontroller/RSA.py
@@ -12,10 +12,15 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import logging
 from opticalcontroller.dijkstra import Graph, shortest_path
 from opticalcontroller.tools import *
 from opticalcontroller.variables import *
 
+LOGGER = logging.getLogger(__name__)
+
+def print(*args) -> None:
+    LOGGER.info(' '.join([str(a) for a in args]))
 
 class RSA():
     def __init__(self, nodes, links):