diff --git a/octavia_tempest_plugin/config.py b/octavia_tempest_plugin/config.py
index 58ddf13..36131bd 100644
--- a/octavia_tempest_plugin/config.py
+++ b/octavia_tempest_plugin/config.py
@@ -151,6 +151,9 @@
                       'dict. Example: {"compute_zone": "The compute '
                       'availability zone."}'),
                 default={'compute_zone': 'The compute availability zone.'}),
+    cfg.IntOpt('listener_conn_limit',
+               default=200,
+               help='Defines listener connection limit.'),
     # Networking
     cfg.BoolOpt('test_with_ipv6',
                 default=True,
diff --git a/octavia_tempest_plugin/tests/api/v2/test_listener.py b/octavia_tempest_plugin/tests/api/v2/test_listener.py
index 1868147..4805487 100644
--- a/octavia_tempest_plugin/tests/api/v2/test_listener.py
+++ b/octavia_tempest_plugin/tests/api/v2/test_listener.py
@@ -124,7 +124,7 @@
             const.PROTOCOL: protocol,
             const.PROTOCOL_PORT: protocol_port,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             # Don't test with a default pool -- we'll do that in the scenario,
             # but this will allow us to test that the field isn't mandatory,
             # as well as not conflate pool failures with listener test failures
@@ -330,7 +330,7 @@
                 const.PROTOCOL: protocol1,
                 const.PROTOCOL_PORT: protocol_port,
                 const.LOADBALANCER_ID: self.lb_id,
-                const.CONNECTION_LIMIT: 200
+                const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit
             }
 
             try:
@@ -360,7 +360,7 @@
                 const.PROTOCOL: protocol2,
                 const.PROTOCOL_PORT: protocol_port,
                 const.LOADBALANCER_ID: self.lb_id,
-                const.CONNECTION_LIMIT: 200,
+                const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             }
 
             try:
@@ -390,7 +390,7 @@
                 const.PROTOCOL: protocol1,
                 const.PROTOCOL_PORT: protocol_port,
                 const.LOADBALANCER_ID: self.lb_id,
-                const.CONNECTION_LIMIT: 200,
+                const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             }
 
             self.assertRaises(
@@ -408,7 +408,7 @@
                 const.PROTOCOL: protocol3,
                 const.PROTOCOL_PORT: protocol_port,
                 const.LOADBALANCER_ID: self.lb_id,
-                const.CONNECTION_LIMIT: 200,
+                const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             }
 
             try:
@@ -439,7 +439,7 @@
                 const.PROTOCOL: protocol4,
                 const.PROTOCOL_PORT: protocol_port,
                 const.LOADBALANCER_ID: self.lb_id,
-                const.CONNECTION_LIMIT: 200,
+                const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             }
 
             self.assertRaises(
@@ -888,7 +888,7 @@
             const.PROTOCOL: protocol,
             const.PROTOCOL_PORT: protocol_port,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             # TODO(rm_work): need to finish the rest of this stuff
             # const.DEFAULT_POOL_ID: '',
             # const.DEFAULT_TLS_CONTAINER_REF: '',
@@ -1067,7 +1067,7 @@
             const.PROTOCOL: protocol,
             const.PROTOCOL_PORT: protocol_port,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             # TODO(rm_work): need to finish the rest of this stuff
             # const.DEFAULT_POOL_ID: '',
             # const.DEFAULT_TLS_CONTAINER_REF: '',
@@ -1131,7 +1131,8 @@
         self.assertEqual(const.OFFLINE, listener[const.OPERATING_STATUS])
         self.assertEqual(protocol, listener[const.PROTOCOL])
         self.assertEqual(protocol_port, listener[const.PROTOCOL_PORT])
-        self.assertEqual(200, listener[const.CONNECTION_LIMIT])
+        self.assertEqual(CONF.load_balancer.listener_conn_limit,
+                         listener[const.CONNECTION_LIMIT])
         if (protocol == const.HTTP and
                 CONF.load_balancer.provider != 'tungstenfabric'):
             insert_headers = listener[const.INSERT_HEADERS]
@@ -1185,7 +1186,7 @@
             const.NAME: new_name,
             const.DESCRIPTION: new_description,
             const.ADMIN_STATE_UP: True,
-            const.CONNECTION_LIMIT: 400,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit+200,
             # TODO(rm_work): need to finish the rest of this stuff
             # const.DEFAULT_POOL_ID: '',
             # const.DEFAULT_TLS_CONTAINER_REF: '',
@@ -1260,7 +1261,8 @@
             self.assertEqual(const.OFFLINE, listener[const.OPERATING_STATUS])
         else:
             self.assertEqual(const.ONLINE, listener[const.OPERATING_STATUS])
-        self.assertEqual(400, listener[const.CONNECTION_LIMIT])
+        self.assertEqual(CONF.load_balancer.listener_conn_limit+200,
+                         listener[const.CONNECTION_LIMIT])
         if (protocol == const.HTTP and
                 CONF.load_balancer.provider != 'tungstenfabric'):
             insert_headers = listener[const.INSERT_HEADERS]
@@ -1430,7 +1432,7 @@
             const.PROTOCOL: protocol,
             const.PROTOCOL_PORT: protocol_port,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
         }
 
         listener = self.mem_listener_client.create_listener(**listener_kwargs)
diff --git a/octavia_tempest_plugin/tests/api/v2/test_member.py b/octavia_tempest_plugin/tests/api/v2/test_member.py
index b1c0e21..35e04ca 100644
--- a/octavia_tempest_plugin/tests/api/v2/test_member.py
+++ b/octavia_tempest_plugin/tests/api/v2/test_member.py
@@ -103,7 +103,7 @@
             const.PROTOCOL: listener_protocol,
             const.PROTOCOL_PORT: cls.current_listener_port,
             const.LOADBALANCER_ID: cls.lb_id,
-            const.CONNECTION_LIMIT: 200
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit
         }
         cls.current_listener_port += 1
         listener = cls.mem_listener_client.create_listener(**listener_kwargs)
diff --git a/octavia_tempest_plugin/tests/scenario/v2/test_ipv6_traffic_ops.py b/octavia_tempest_plugin/tests/scenario/v2/test_ipv6_traffic_ops.py
index b27b8fc..abf501d 100644
--- a/octavia_tempest_plugin/tests/scenario/v2/test_ipv6_traffic_ops.py
+++ b/octavia_tempest_plugin/tests/scenario/v2/test_ipv6_traffic_ops.py
@@ -99,7 +99,7 @@
             const.LOADBALANCER_ID: cls.lb_id,
             # For branches that don't support multiple listeners in single
             # haproxy process and use haproxy>=1.8:
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
         }
         listener = cls.mem_listener_client.create_listener(**listener_kwargs)
         cls.listener_ids[protocol] = listener[const.ID]
diff --git a/octavia_tempest_plugin/tests/scenario/v2/test_listener.py b/octavia_tempest_plugin/tests/scenario/v2/test_listener.py
index 9683244..8828433 100644
--- a/octavia_tempest_plugin/tests/scenario/v2/test_listener.py
+++ b/octavia_tempest_plugin/tests/scenario/v2/test_listener.py
@@ -262,7 +262,7 @@
             const.PROTOCOL: protocol,
             const.PROTOCOL_PORT: 80,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
             const.DEFAULT_POOL_ID: pool1_id,
             # TODO(rm_work): need to finish the rest of this stuff
             # const.DEFAULT_TLS_CONTAINER_REF: '',
@@ -319,7 +319,8 @@
         self.assertEqual(const.OFFLINE, listener[const.OPERATING_STATUS])
         self.assertEqual(protocol, listener[const.PROTOCOL])
         self.assertEqual(80, listener[const.PROTOCOL_PORT])
-        self.assertEqual(200, listener[const.CONNECTION_LIMIT])
+        self.assertEqual(CONF.load_balancer.listener_conn_limit,
+                         listener[const.CONNECTION_LIMIT])
         if (protocol in [const.HTTP, const.TERMINATED_HTTPS] and
                 CONF.load_balancer.provider != 'tungstenfabric'):
             insert_headers = listener[const.INSERT_HEADERS]
@@ -348,7 +349,7 @@
             const.NAME: new_name,
             const.DESCRIPTION: new_description,
             const.ADMIN_STATE_UP: True,
-            const.CONNECTION_LIMIT: 400,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit+200,
             const.DEFAULT_POOL_ID: pool2_id,
             # TODO(rm_work): need to finish the rest of this stuff
             # const.DEFAULT_TLS_CONTAINER_REF: '',
@@ -411,7 +412,8 @@
             self.assertEqual(const.ONLINE, listener[const.OPERATING_STATUS])
         self.assertEqual(protocol, listener[const.PROTOCOL])
         self.assertEqual(80, listener[const.PROTOCOL_PORT])
-        self.assertEqual(400, listener[const.CONNECTION_LIMIT])
+        self.assertEqual(listener_update_kwargs[const.CONNECTION_LIMIT],
+                         listener[const.CONNECTION_LIMIT])
         if (protocol in [const.HTTP, const.TERMINATED_HTTPS] and
                 CONF.load_balancer.provider != 'tungstenfabric'):
             insert_headers = listener[const.INSERT_HEADERS]
diff --git a/octavia_tempest_plugin/tests/scenario/v2/test_member.py b/octavia_tempest_plugin/tests/scenario/v2/test_member.py
index 5a01eab..d3cada1 100644
--- a/octavia_tempest_plugin/tests/scenario/v2/test_member.py
+++ b/octavia_tempest_plugin/tests/scenario/v2/test_member.py
@@ -106,7 +106,7 @@
             const.LOADBALANCER_ID: cls.lb_id,
             # For branches that don't support multiple listeners in single
             # haproxy process and use haproxy>=1.8:
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
         }
         cls.current_listener_port += 1
         listener = cls.mem_listener_client.create_listener(**listener_kwargs)
diff --git a/octavia_tempest_plugin/tests/scenario/v2/test_traffic_ops.py b/octavia_tempest_plugin/tests/scenario/v2/test_traffic_ops.py
index fb10313..6faeb57 100644
--- a/octavia_tempest_plugin/tests/scenario/v2/test_traffic_ops.py
+++ b/octavia_tempest_plugin/tests/scenario/v2/test_traffic_ops.py
@@ -115,7 +115,7 @@
             const.LOADBALANCER_ID: cls.lb_id,
             # For branches that don't support multiple listeners in single
             # haproxy process and use haproxy>=1.8:
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
         }
 
         if insert_headers_dic:
@@ -1501,8 +1501,10 @@
             'Failed - all UDP retries to LB VIP has failed')
 
         # Update LB listener
-        listener_kwargs = {const.LISTENER_ID: listener_id,
-                           const.CONNECTION_LIMIT: 300}
+        listener_kwargs = {
+            const.LISTENER_ID: listener_id,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit+100,
+        }
         self.mem_listener_client.update_listener(**listener_kwargs)
         waiters.wait_for_status(self.mem_lb_client.show_loadbalancer,
                                 self.lb_id, const.PROVISIONING_STATUS,
@@ -1629,7 +1631,7 @@
             const.PROTOCOL: const.PROMETHEUS,
             const.PROTOCOL_PORT: 8080,
             const.LOADBALANCER_ID: self.lb_id,
-            const.CONNECTION_LIMIT: 200,
+            const.CONNECTION_LIMIT: CONF.load_balancer.listener_conn_limit,
         }
 
         if self.mem_listener_client.is_version_supported(