diff --git a/ovn_octavia_provider/common/constants.py b/ovn_octavia_provider/common/constants.py
index 141fac40..9e2f916a 100644
--- a/ovn_octavia_provider/common/constants.py
+++ b/ovn_octavia_provider/common/constants.py
@@ -28,6 +28,7 @@ OVN_DEVICE_OWNER_EXT_ID_KEY = 'neutron:device_owner'
 OVN_FIP_EXT_ID_KEY = 'neutron:fip_id'
 OVN_FIP_PORT_EXT_ID_KEY = 'neutron:fip_port_id'
 OVN_GW_PORT_EXT_ID_KEY = 'neutron:gw_port_id'
+OVN_PORT_CIDR_EXT_ID_KEY = 'neutron:cidrs'
 
 LB_EXT_IDS_LS_REFS_KEY = 'ls_refs'
 LB_EXT_IDS_LR_REF_KEY = 'lr_ref'
diff --git a/ovn_octavia_provider/helper.py b/ovn_octavia_provider/helper.py
index 3016dab3..1a221691 100644
--- a/ovn_octavia_provider/helper.py
+++ b/ovn_octavia_provider/helper.py
@@ -634,10 +634,14 @@ class OvnProviderHelper():
     def _find_lr_of_ls(self, ovn_ls, subnet_gateway_ip=None):
         lsp_router_port = None
         for port in ovn_ls.ports or []:
-            if port.type == 'router':
+            if (port.type == 'router' and
+                    port.external_ids.get(
+                        ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY) ==
+                    n_const.DEVICE_OWNER_ROUTER_INTF):
                 if subnet_gateway_ip:
                     port_cidr = netaddr.IPNetwork(
-                        port.external_ids['neutron:cidrs']).ip
+                        port.external_ids[
+                            ovn_const.OVN_PORT_CIDR_EXT_ID_KEY]).ip
                     if netaddr.IPAddress(subnet_gateway_ip) != port_cidr:
                         continue
                 lsp_router_port = port
@@ -1533,9 +1537,8 @@ class OvnProviderHelper():
             ovn_lr = self._find_lr_of_ls(
                 ovn_ls, subnet['subnet'].get('gateway_ip'))
             if ovn_lr:
-                for net in self._find_ls_for_lr(ovn_lr):
-                    commands.append(self.ovn_nbdb_api.ls_lb_add(
-                        net, ovn_lb.uuid, may_exist=True))
+                commands.extend(self._update_lb_to_lr_association(
+                    ovn_lb, ovn_lr))
         except n_exc.NotFound:
             pass
         except idlutils.RowNotFound:
diff --git a/ovn_octavia_provider/tests/unit/test_helper.py b/ovn_octavia_provider/tests/unit/test_helper.py
index 8e7f8531..ad1d2403 100644
--- a/ovn_octavia_provider/tests/unit/test_helper.py
+++ b/ovn_octavia_provider/tests/unit/test_helper.py
@@ -14,6 +14,7 @@
 import copy
 from unittest import mock
 
+from neutron_lib import constants as n_const
 from neutronclient.common import exceptions as n_exc
 from octavia_lib.api.drivers import data_models
 from octavia_lib.api.drivers import exceptions
@@ -1215,20 +1216,22 @@ class TestOvnProviderHelper(ovn_base.TestOvnOctaviaBase):
         self.assertEqual(status['members'][0]['operating_status'],
                          constants.OFFLINE)
 
-    @mock.patch.object(ovn_helper.OvnProviderHelper, '_find_ls_for_lr')
+    @mock.patch.object(ovn_helper.OvnProviderHelper, '_find_ovn_lb_by_pool_id')
     @mock.patch.object(ovn_helper.OvnProviderHelper, '_find_lr_of_ls')
     @mock.patch('ovn_octavia_provider.common.clients.get_neutron_client')
-    def test_member_create_lb_add_from_lr(self, net_cli, f_lr, f_ls):
+    def test_member_create_lb_add_from_lr(self, net_cli, f_lr, folbpi):
         fake_subnet = fakes.FakeSubnet.create_one_subnet()
         net_cli.return_value.show_subnet.return_value = {'subnet': fake_subnet}
         f_lr.return_value = self.router
-        f_ls.return_value = [self.network]
+        pool_key = 'pool_%s' % self.pool_id
+        folbpi.return_value = (pool_key, self.ovn_lb)
         self.ovn_lb.external_ids = mock.MagicMock()
         status = self.helper.member_create(self.member)
         self.assertEqual(status['loadbalancers'][0]['provisioning_status'],
                          constants.ACTIVE)
         f_lr.assert_called_once_with(self.network, fake_subnet['gateway_ip'])
-        f_ls.assert_called_once_with(self.router)
+        self.helper._update_lb_to_lr_association.assert_called_once_with(
+            self.ovn_lb, self.router)
 
     @mock.patch.object(ovn_helper.OvnProviderHelper, '_find_ls_for_lr')
     @mock.patch.object(ovn_helper.OvnProviderHelper, '_find_lr_of_ls')
@@ -1832,7 +1835,9 @@ class TestOvnProviderHelper(ovn_base.TestOvnOctaviaBase):
             attrs={
                 'external_ids': {
                     ovn_const.OVN_ROUTER_NAME_EXT_ID_KEY: 'router1',
-                    'neutron:cidrs': '10.10.10.1/24'},
+                    'neutron:cidrs': '10.10.10.1/24',
+                    ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY:
+                        n_const.DEVICE_OWNER_ROUTER_INTF},
                 'type': 'router',
                 'options': {
                     'router-port': 'lrp-foo-name'},
@@ -1841,7 +1846,9 @@ class TestOvnProviderHelper(ovn_base.TestOvnOctaviaBase):
             attrs={
                 'external_ids': {
                     ovn_const.OVN_ROUTER_NAME_EXT_ID_KEY: 'router2',
-                    'neutron:cidrs': '10.10.10.2/24'},
+                    'neutron:cidrs': '10.10.10.2/24',
+                    ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY:
+                        n_const.DEVICE_OWNER_ROUTER_INTF},
                 'type': 'router',
                 'options': {
                     'router-port': 'lrp-bar-name'},
@@ -1866,7 +1873,9 @@ class TestOvnProviderHelper(ovn_base.TestOvnOctaviaBase):
         lsp = fakes.FakeOvsdbRow.create_one_ovsdb_row(
             attrs={
                 'external_ids': {
-                    ovn_const.OVN_ROUTER_NAME_EXT_ID_KEY: 'router1'},
+                    ovn_const.OVN_ROUTER_NAME_EXT_ID_KEY: 'router1',
+                    ovn_const.OVN_DEVICE_OWNER_EXT_ID_KEY:
+                        n_const.DEVICE_OWNER_ROUTER_INTF},
                 'type': 'router',
                 'options': {
                     'router-port': 'lrp-lrp-foo-name'}