diff --git a/vmware_nsxlib/tests/unit/v3/policy/test_resources.py b/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
index d197ce4b..db61ee95 100644
--- a/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
+++ b/vmware_nsxlib/tests/unit/v3/policy/test_resources.py
@@ -5764,6 +5764,26 @@ class TestPolicySegmentPort(NsxPolicyLibTestCase):
             lp_update.assert_called_once_with(
                 mock.ANY, False, admin_state=True)
 
+    def test_update(self):
+        segment_id = '111'
+        port_id = '222'
+        name = 'new name'
+        # admin_state = False
+        with self.mock_get(segment_id, port_id), \
+            self.mock_create_update() as update_call:
+
+            self.resourceApi.update(segment_id,
+                                    port_id,
+                                    name=name,
+                                    init_state=None)
+            expected_def = core_defs.SegmentPortDef(
+                nsx_version=nsxlib_testcase.LATEST_VERSION,
+                segment_id=segment_id,
+                port_id=port_id,
+                name=name,
+                init_state=None)
+            self.assert_called_with_def(update_call, expected_def)
+
 
 class TestPolicySegmentProfileBase(NsxPolicyLibTestCase):
 
diff --git a/vmware_nsxlib/v3/nsx_constants.py b/vmware_nsxlib/v3/nsx_constants.py
index 69a3ad2d..ffe3580a 100644
--- a/vmware_nsxlib/v3/nsx_constants.py
+++ b/vmware_nsxlib/v3/nsx_constants.py
@@ -36,6 +36,7 @@ ALLOCATE_ADDRESS_NONE = "None"
 # SegmentPort init_state types
 INIT_STATE_UNBLOCKED_VLAN = 'UNBLOCKED_VLAN'
 INIT_STATE_RESTORE_VIF = 'RESTORE_VIF'
+INIT_STATE_NONE = None
 
 # NSXv3 L2 Gateway constants
 BRIDGE_ENDPOINT = "BRIDGEENDPOINT"
diff --git a/vmware_nsxlib/v3/policy/core_defs.py b/vmware_nsxlib/v3/policy/core_defs.py
index 7b6a2c89..7224e41b 100644
--- a/vmware_nsxlib/v3/policy/core_defs.py
+++ b/vmware_nsxlib/v3/policy/core_defs.py
@@ -1356,7 +1356,8 @@ class SegmentPortDef(ResourceDef):
         if (self.has_attr('init_state') and
             self._version_dependant_attr_supported('init_state')):
             valid_list = [nsx_constants.INIT_STATE_UNBLOCKED_VLAN,
-                          nsx_constants.INIT_STATE_RESTORE_VIF]
+                          nsx_constants.INIT_STATE_RESTORE_VIF,
+                          nsx_constants.INIT_STATE_NONE]
             init_state = self.get_attr('init_state')
             if init_state not in valid_list:
                 raise exceptions.InvalidInput(
diff --git a/vmware_nsxlib/v3/policy/core_resources.py b/vmware_nsxlib/v3/policy/core_resources.py
index c5f0e531..8002fd91 100644
--- a/vmware_nsxlib/v3/policy/core_resources.py
+++ b/vmware_nsxlib/v3/policy/core_resources.py
@@ -2606,6 +2606,7 @@ class NsxPolicySegmentPortApi(NsxPolicyResourceBase):
                address_bindings=IGNORE,
                hyperbus_mode=IGNORE,
                admin_state=IGNORE,
+               init_state=IGNORE,
                extra_configs=IGNORE,
                tags=IGNORE,
                tenant=constants.POLICY_INFRA_TENANT):
@@ -2617,6 +2618,7 @@ class NsxPolicySegmentPortApi(NsxPolicyResourceBase):
                      address_bindings=address_bindings,
                      hyperbus_mode=hyperbus_mode,
                      admin_state=admin_state,
+                     init_state=init_state,
                      extra_configs=extra_configs,
                      tags=tags,
                      tenant=tenant)