diff --git a/ovn_bgp_agent/config.py b/ovn_bgp_agent/config.py
index 63a04f65..d704ecb0 100644
--- a/ovn_bgp_agent/config.py
+++ b/ovn_bgp_agent/config.py
@@ -231,13 +231,13 @@ local_ovn_cluster_opts = [
     cfg.ListOpt('provider_networks_pool_prefixes',
                 default=['192.168.0.0/16'],
                 help='List of prefixes for provider networks'),
-    cfg.ListOpt('bgp_chassis_id',
-                default='bgp',
-                help='The chassis_id used for the ovn-controller instance'
-                     ' related to the node-local OVN instance. Used as a'
-                     ' suffix for getting instance-specific options'
-                     ' from OVSDB. This option has effect only when the OVN'
-                     ' NB driver is used.'),
+    cfg.StrOpt('bgp_chassis_id',
+               default='bgp',
+               help='The chassis_id used for the ovn-controller instance'
+                    ' related to the node-local OVN instance. Used as a'
+                    ' suffix for getting instance-specific options'
+                    ' from OVSDB. This option has effect only when the OVN'
+                    ' NB driver is used.'),
 ]
 
 CONF = cfg.CONF
diff --git a/ovn_bgp_agent/tests/unit/drivers/openstack/utils/test_ovs.py b/ovn_bgp_agent/tests/unit/drivers/openstack/utils/test_ovs.py
index 1272d6a4..8e603fda 100644
--- a/ovn_bgp_agent/tests/unit/drivers/openstack/utils/test_ovs.py
+++ b/ovn_bgp_agent/tests/unit/drivers/openstack/utils/test_ovs.py
@@ -15,6 +15,7 @@
 
 from unittest import mock
 
+from oslo_config import cfg
 from ovsdbapp.schema.open_vswitch import impl_idl as idl_ovs
 
 from ovn_bgp_agent import constants
@@ -24,6 +25,9 @@ from ovn_bgp_agent.tests import base as test_base
 from ovn_bgp_agent.utils import linux_net
 
 
+CONF = cfg.CONF
+
+
 class TestOVS(test_base.TestCase):
 
     def setUp(self):
@@ -484,7 +488,18 @@ class TestOvsIdl(test_base.TestCase):
             'Open_vSwitch', '.', 'external_ids')
 
     def test_get_ovn_bridge_mappings_bridge(self):
-        bridge = 'bgp'
+        bridge = 'bgp1'
+        self.execute_ref.return_value = {
+            'ovn-bridge-mappings-bgp1':
+            'net0:bridge0,net1:bridge1, net2:bridge2'}
+        ret = self.ovs_idl.get_ovn_bridge_mappings(bridge=bridge)
+        self.assertEqual(['net0:bridge0', 'net1:bridge1', 'net2:bridge2'], ret)
+        self.ovs_idl.idl_ovs.db_get.assert_called_once_with(
+            'Open_vSwitch', '.', 'external_ids')
+
+    def test_get_ovn_bridge_mappings_default_bridge(self):
+        # bgp_chassis_id defaults to 'bgp'
+        bridge = CONF.local_ovn_cluster.bgp_chassis_id
         self.execute_ref.return_value = {
             'ovn-bridge-mappings-bgp':
             'net0:bridge0,net1:bridge1, net2:bridge2'}