diff --git a/vmware_nsxlib/tests/unit/v3/test_constants.py b/vmware_nsxlib/tests/unit/v3/test_constants.py
index a5f925c8..43cbb1be 100644
--- a/vmware_nsxlib/tests/unit/v3/test_constants.py
+++ b/vmware_nsxlib/tests/unit/v3/test_constants.py
@@ -331,6 +331,15 @@ FAKE_TZ = {
     "host_switch_mode": "STANDARD"
 }
 
+FAKE_TN_UUID = uuidutils.generate_uuid()
+FAKE_TN = {
+    "resource_type": "TransportNode",
+    "revision": 0,
+    "id": FAKE_TZ_UUID,
+    "display_name": FAKE_NAME,
+    "transport_zone_endpoints": [{"transport_zone_id": FAKE_TZ_UUID}]
+}
+
 FAKE_MD_UUID = uuidutils.generate_uuid()
 FAKE_URL = "http://7.7.7.70:3500/abc"
 FAKE_MD = {
diff --git a/vmware_nsxlib/tests/unit/v3/test_resources.py b/vmware_nsxlib/tests/unit/v3/test_resources.py
index fa65a433..0e585a39 100644
--- a/vmware_nsxlib/tests/unit/v3/test_resources.py
+++ b/vmware_nsxlib/tests/unit/v3/test_resources.py
@@ -1277,6 +1277,19 @@ class TransportZone(BaseTestResource):
             self.assertEqual(tz.HOST_SWITCH_MODE_STANDARD, tz_mode)
 
 
+class TransportNode(BaseTestResource):
+
+    def setUp(self):
+        super(TransportNode, self).setUp(core_resources.NsxLibTransportNode)
+
+    def test_get_transport_zones(self):
+        fake_tn = test_constants.FAKE_TN.copy()
+        tn = self.get_mocked_resource()
+        with mock.patch.object(tn.client, 'url_get', return_value=fake_tn):
+            tzs = tn.get_transport_zones(fake_tn['id'])
+            self.assertEqual([test_constants.FAKE_TZ_UUID], tzs)
+
+
 class MetadataProxy(BaseTestResource):
 
     def setUp(self):
diff --git a/vmware_nsxlib/v3/__init__.py b/vmware_nsxlib/v3/__init__.py
index 239eac99..18a5ec1e 100644
--- a/vmware_nsxlib/v3/__init__.py
+++ b/vmware_nsxlib/v3/__init__.py
@@ -244,6 +244,8 @@ class NsxLib(NsxLibBase):
             self.client, self.nsxlib_config, nsxlib=self)
         self.transport_zone = core_resources.NsxLibTransportZone(
             self.client, self.nsxlib_config, nsxlib=self)
+        self.transport_node = core_resources.NsxLibTransportNode(
+            self.client, self.nsxlib_config, nsxlib=self)
         self.relay_service = core_resources.NsxLibDhcpRelayService(
             self.client, self.nsxlib_config, nsxlib=self)
         self.relay_profile = core_resources.NsxLibDhcpRelayProfile(
diff --git a/vmware_nsxlib/v3/core_resources.py b/vmware_nsxlib/v3/core_resources.py
index 72493888..f00085a2 100644
--- a/vmware_nsxlib/v3/core_resources.py
+++ b/vmware_nsxlib/v3/core_resources.py
@@ -682,6 +682,13 @@ class NsxLibEdgeCluster(utils.NsxLibApiBase):
     def resource_type(self):
         return 'EdgeCluster'
 
+    def get_transport_nodes(self, uuid):
+        ec = self.get(uuid)
+        members = []
+        for member in ec.get('members', []):
+            members.append(member.get('transport_node_id'))
+        return members
+
 
 class NsxLibTransportZone(utils.NsxLibApiBase):
 
@@ -711,6 +718,26 @@ class NsxLibTransportZone(utils.NsxLibApiBase):
         return tz.get('host_switch_mode', self.HOST_SWITCH_MODE_STANDARD)
 
 
+class NsxLibTransportNode(utils.NsxLibApiBase):
+
+    @property
+    def uri_segment(self):
+        return 'transport-nodes'
+
+    @property
+    def resource_type(self):
+        return 'TransportNode'
+
+    @property
+    def use_cache_for_get(self):
+        return True
+
+    def get_transport_zones(self, uuid):
+        tz = self.get(uuid)
+        return [ep.get('transport_zone_id') for ep in
+                tz.get('transport_zone_endpoints', [])]
+
+
 class NsxLibDhcpProfile(utils.NsxLibApiBase):
 
     @property
diff --git a/vmware_nsxlib/v3/router.py b/vmware_nsxlib/v3/router.py
index ae0a7448..74e6ac4d 100644
--- a/vmware_nsxlib/v3/router.py
+++ b/vmware_nsxlib/v3/router.py
@@ -241,3 +241,16 @@ class RouterLib(object):
         return self.nsxlib.logical_router.delete_static_route_by_values(
             nsx_router_id, dest_cidr=route['destination'],
             nexthop=route['nexthop'])
+
+    def get_tier0_router_tz(self, tier0_uuid):
+        lrouter = self._router_client.get(tier0_uuid)
+        edge_cluster_uuid = lrouter.get('edge_cluster_id')
+        if not edge_cluster_uuid:
+            return []
+        tier0_transport_nodes = self.nsxlib.edge_cluster.get_transport_nodes(
+            edge_cluster_uuid)
+        tier0_tzs = []
+        for tn_uuid in tier0_transport_nodes:
+            tier0_tzs.extend(self.nsxlib.transport_node.get_transport_zones(
+                tn_uuid))
+        return tier0_tzs