diff --git a/dragonflow/neutron/db/models/l2.py b/dragonflow/neutron/db/models/l2.py
index 3e700b70c..f3f5ca693 100644
--- a/dragonflow/neutron/db/models/l2.py
+++ b/dragonflow/neutron/db/models/l2.py
@@ -98,7 +98,7 @@ def _build_dhcp_params(port):
     return ret
 
 
-def _build_port_binding(port):
+def build_port_binding(port):
     profile = port.get(portbindings.PROFILE)
     if profile:
         port_key = profile.get(df_const.DF_BINDING_PROFILE_PORT_KEY)
@@ -142,5 +142,5 @@ def logical_port_from_neutron_port(port):
         binding_vnic_type=port.get(portbindings.VNIC_TYPE),
         qos_policy=port.get('qos_policy_id'),
         dhcp_params=_build_dhcp_params(port),
-        binding=_build_port_binding(port),
+        binding=build_port_binding(port),
     )
diff --git a/dragonflow/neutron/services/bgp/bgp_plugin.py b/dragonflow/neutron/services/bgp/bgp_plugin.py
index e7b57cc5b..df7f57e32 100644
--- a/dragonflow/neutron/services/bgp/bgp_plugin.py
+++ b/dragonflow/neutron/services/bgp/bgp_plugin.py
@@ -17,6 +17,7 @@ from neutron_lib.callbacks import registry
 from neutron_lib.callbacks import resources
 from neutron_lib import constants as n_const
 from neutron_lib import context as n_context
+from neutron_lib.plugins import directory
 from neutron_lib.services import base as service_base
 from oslo_log import log as logging
 
@@ -25,6 +26,7 @@ from dragonflow.db.models import bgp
 from dragonflow.db.models import core
 from dragonflow.db.models import l2
 from dragonflow.db.neutron import lockedobjects_db as lock_db
+from dragonflow.neutron.db.models import l2 as neutron_l2
 from dragonflow.neutron.services import mixins
 
 
@@ -68,7 +70,6 @@ class DFBgpPlugin(service_base.ServicePluginBase,
 
     def __init__(self):
         super(DFBgpPlugin, self).__init__()
-        self._nb_api = None
         self._register_callbacks()
 
     def get_plugin_name(self):
@@ -102,14 +103,12 @@ class DFBgpPlugin(service_base.ServicePluginBase,
     def floatingip_update_callback(self, resource, event, trigger, **kwargs):
         context = kwargs['context']
         port_id = kwargs['fixed_port_id']
-        floating_ip_address = kwargs['floating_ip_address']
+        floating_ip_address = str(kwargs['floating_ip_address'])
         dest = floating_ip_address + '/32'
 
         if port_id:
             # Associate floatingip
-            project_id = _get_project_id_from_context(context)
-            external_ip = self._get_external_ip_of_lport(port_id,
-                                                         project_id)
+            external_ip = self._get_external_ip_of_lport(context, port_id)
             if not external_ip:
                 return
 
@@ -128,14 +127,13 @@ class DFBgpPlugin(service_base.ServicePluginBase,
         for speaker in bgp_speakers:
             fip_handler(context, speaker.id, speaker.project_id, fip_data)
 
-    def _get_external_ip_of_lport(self, lport_id, topic):
-        """Get the accessible external ip of chassis where lport resides in"""
-
-        lport = self.nb_api.get(l2.LogicalPort(id=lport_id, topic=topic))
-        binding = lport.binding
+    def _get_external_ip_of_lport(self, context, port_id):
+        """Get the accessible external ip of the chassis where lport resides"""
+        port = directory.get_plugin().get_port(context, port_id)
+        binding = neutron_l2.build_port_binding(port)
         if not binding:
             LOG.warning(
-                'Logical port %s has not been bound to any host yet', lport_id)
+                'Logical port %s has not been bound to any host yet', port_id)
             return
 
         if binding.type == l2.BINDING_VTEP: