diff --git a/xos/synchronizer/config.yaml b/xos/synchronizer/config.yaml
index 2788ffa..43b075c 100644
--- a/xos/synchronizer/config.yaml
+++ b/xos/synchronizer/config.yaml
@@ -17,7 +17,6 @@
 name: fabric
 required_models:
   - FabricService
-dependency_graph: "/opt/xos/synchronizers/fabric/model-deps"
 steps_dir: "/opt/xos/synchronizers/fabric/steps"
 sys_dir: "/opt/xos/synchronizers/fabric/sys"
 models_dir: "/opt/xos/synchronizers/fabric/models"
diff --git a/xos/synchronizer/model-deps b/xos/synchronizer/model-deps
deleted file mode 100644
index 0967ef4..0000000
--- a/xos/synchronizer/model-deps
+++ /dev/null
@@ -1 +0,0 @@
-{}
diff --git a/xos/synchronizer/steps/sync_fabric_port.py b/xos/synchronizer/steps/sync_fabric_port.py
index bfac5b9..199f8cf 100644
--- a/xos/synchronizer/steps/sync_fabric_port.py
+++ b/xos/synchronizer/steps/sync_fabric_port.py
@@ -14,9 +14,10 @@
 # limitations under the License.
 
 import requests
+import urllib
 from requests.auth import HTTPBasicAuth
 from synchronizers.new_base.syncstep import SyncStep, DeferredException, model_accessor
-from synchronizers.new_base.modelaccessor import FabricService, SwitchPort
+from synchronizers.new_base.modelaccessor import FabricService, SwitchPort, PortInterface
 
 from xosconfig import Config
 from multistructlog import create_logger
@@ -27,9 +28,14 @@
 
 class SyncFabricPort(SyncStep):
     provides = [SwitchPort]
-    observes = SwitchPort
+    observes = [SwitchPort, PortInterface]
 
     def sync_record(self, model):
+
+        if model.leaf_model_name == "PortInterface":
+            log.info("Receivent update for PortInterface", name=model, port=model.port.portId)
+            return self.sync_record(model.port)
+
         log.info("Adding port %s/%s to onos-fabric" % (model.switch.ofId, model.portId))
         interfaces = []
         for intf in model.interfaces.all():
@@ -63,20 +69,43 @@
 
         if r.status_code != 200:
             log.error(r.text)
-            raise Exception("Failed to add port %s into ONOS" % model.name)
+            raise Exception("Failed to add port  %s/%s into ONOS" % (model.switch.ofId, model.portId))
         else:
             try:
                 log.info("Port %s/%s response" % (model.switch.ofId, model.portId), json=r.json())
             except Exception:
                 log.info("Port %s/%s response" % (model.switch.ofId, model.portId), text=r.text)
 
-    def delete_record(self, model):
-        log.info("Removing port %s/%s from onos-fabric" % (model.switch.ofId, model.portId))
+    def delete_netcfg_item(self, partial_url):
         onos = Helpers.get_onos_fabric_service()
-        url = 'http://%s:%s/onos/v1/network/configuration/ports/%s/%s' % (onos.rest_hostname, onos.rest_port, model.switch.ofId, model.portId)
+        url = 'http://%s:%s/onos/v1/network/configuration/ports/%s' % (onos.rest_hostname, onos.rest_port, partial_url)
 
         r = requests.delete(url, auth=HTTPBasicAuth(onos.rest_username, onos.rest_password))
 
         if r.status_code != 204:
             log.error(r.text)
-            raise Exception("Failed to remove port %s from ONOS" % model.name)
+            raise Exception("Failed to %s port %s from ONOS" % url)
+
+    def delete_record(self, model):
+
+        if model.leaf_model_name == "PortInterface":
+            # TODO add unit tests
+            log.info("Receivent update for PortInterface", name=model, port=model.port.portId)
+            log.info("Removing port interface %s from port %s/%s in onos-fabric" % (model.name, model.port.switch.ofId, model.port.portId))
+
+            key = "%s/%s" % (model.port.switch.ofId, model.port.portId)
+            key = urllib.quote(key, safe='') + "/interfaces"
+
+            # deleting all the interfaces
+            self.delete_netcfg_item(key)
+
+            # resync the existing interfaces
+            return self.sync_record(model.port)
+
+        log.info("Removing port %s/%s from onos-fabric" % (model.switch.ofId, model.portId))
+
+        key = "%s/%s" % (model.switch.ofId, model.portId)
+        key = urllib.quote(key, safe='')
+
+        # deleting the port
+        self.delete_netcfg_item(key)
diff --git a/xos/synchronizer/steps/test_sync_fabric_port.py b/xos/synchronizer/steps/test_sync_fabric_port.py
index 696a6a7..b0f6886 100644
--- a/xos/synchronizer/steps/test_sync_fabric_port.py
+++ b/xos/synchronizer/steps/test_sync_fabric_port.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 import unittest
-
+import urllib
 import functools
 from mock import patch, call, Mock, PropertyMock
 import requests_mock
@@ -189,12 +189,15 @@
 
     @requests_mock.Mocker()
     def test_delete_port(self, m):
-        m.delete("http://onos-fabric:8181/onos/v1/network/configuration/ports/of:1234/1",
-            status_code=204)
 
         self.o.switch.ofId = "of:1234"
         self.o.portId = "1"
 
+        key = urllib.quote("of:1234/1", safe='')
+
+        m.delete("http://onos-fabric:8181/onos/v1/network/configuration/ports/%s" % key,
+            status_code=204)
+
         with patch.object(Service.objects, "get") as onos_fabric_get:
             onos_fabric_get.return_value = self.fabric