diff --git a/data/data/topo_nsfnet.json b/data/data/topo_nsfnet.json
new file mode 100644
index 0000000000000000000000000000000000000000..f2cbb53a8f3f9648c4a8b60f97c2212485ac5cc9
--- /dev/null
+++ b/data/data/topo_nsfnet.json
@@ -0,0 +1,136 @@
+{
+    "topoId": {
+        "contextId": {"contextUuid": {"uuid": "default"}},
+        "topoId": {"uuid": "topo0-nsfnet"}
+    },
+    "device" : [
+        {"device_id": {"device_id": {"uuid": "1" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "1" }}, "port_id": {"uuid" : "101"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "2" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "2" }}, "port_id": {"uuid" : "201"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "3" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "3" }}, "port_id": {"uuid" : "301"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "4" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "4" }}, "port_id": {"uuid" : "401"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "5" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "5" }}, "port_id": {"uuid" : "501"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "6" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "6" }}, "port_id": {"uuid" : "601"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "7" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "7" }}, "port_id": {"uuid" : "701"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "8" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "8" }}, "port_id": {"uuid" : "801"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "9" }}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "9" }}, "port_id": {"uuid" : "901"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "10"}}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "10"}}, "port_id": {"uuid" : "1001"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "11"}}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "11"}}, "port_id": {"uuid" : "1101"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "12"}}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "12"}}, "port_id": {"uuid" : "1201"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "13"}}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "13"}}, "port_id": {"uuid" : "1301"}}, "port_type": "LINE"}
+        ]},
+        {"device_id": {"device_id": {"uuid": "14"}}, "device_type": "ROADM", "device_config": {"device_config": ""}, "devOperationalStatus": 1, "endpointList" : [
+            {"port_id": {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "14"}}, "port_id": {"uuid" : "1401"}}, "port_type": "LINE"}
+        ]} 
+    ],
+    "link" : [
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "1" }}, "port_id": {"uuid": "101" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "2" }}, "port_id": {"uuid": "201" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "1" }}, "port_id": {"uuid": "101" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "3" }}, "port_id": {"uuid": "301" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "1" }}, "port_id": {"uuid": "101" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "8" }}, "port_id": {"uuid": "801" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "2" }}, "port_id": {"uuid": "201" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "3" }}, "port_id": {"uuid": "301" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "2" }}, "port_id": {"uuid": "201" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "4" }}, "port_id": {"uuid": "401" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "3" }}, "port_id": {"uuid": "301" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "6" }}, "port_id": {"uuid": "601" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "4" }}, "port_id": {"uuid": "401" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "5" }}, "port_id": {"uuid": "501" }}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "4" }}, "port_id": {"uuid": "401" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "11"}}, "port_id": {"uuid": "1101"}}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "5" }}, "port_id": {"uuid": "501" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "6" }}, "port_id": {"uuid": "601" }}
+        ]},         
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "5" }}, "port_id": {"uuid": "501" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "7" }}, "port_id": {"uuid": "701" }}
+        ]},                                                          
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "6" }}, "port_id": {"uuid": "601" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "10"}}, "port_id": {"uuid": "1001"}}
+        ]},                                                  
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "6" }}, "port_id": {"uuid": "601" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "13"}}, "port_id": {"uuid": "1301"}}
+        ]},                                                  
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "7" }}, "port_id": {"uuid": "701" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "8" }}, "port_id": {"uuid": "801" }}
+        ]},                                                  
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "8" }}, "port_id": {"uuid": "801" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "9" }}, "port_id": {"uuid": "901" }}
+        ]},                                                  
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "9" }}, "port_id": {"uuid": "901" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "10"}}, "port_id": {"uuid": "1001"}}
+        ]}, 
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "9" }}, "port_id": {"uuid": "901" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "12"}}, "port_id": {"uuid": "1201"}}
+        ]},   
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "9" }}, "port_id": {"uuid": "901" }},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "14"}}, "port_id": {"uuid": "1401"}}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "11"}}, "port_id": {"uuid": "1101"}},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "12"}}, "port_id": {"uuid": "1201"}}
+        ]},   
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "11"}}, "port_id": {"uuid": "1101"}},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "14"}}, "port_id": {"uuid": "1401"}}
+        ]},     
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "12"}}, "port_id": {"uuid": "1201"}},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "13"}}, "port_id": {"uuid": "1301"}}
+        ]},
+        {"endpointList" : [
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "13"}}, "port_id": {"uuid": "1301"}},
+            {"topoId": {"topoId": {"uuid": "topo0-nsfnet"}}, "dev_id": {"device_id": {"uuid": "14"}}, "port_id": {"uuid": "1401"}}
+        ]}      
+    ]
+}