diff --git a/lib/ansible/module_utils/ce.py b/lib/ansible/module_utils/ce.py
index bc12996787e..e4ee9edabf4 100644
--- a/lib/ansible/module_utils/ce.py
+++ b/lib/ansible/module_utils/ce.py
@@ -61,7 +61,7 @@ ce_provider_spec = {
     'use_ssl': dict(type='bool'),
     'validate_certs': dict(type='bool'),
     'timeout': dict(type='int'),
-    'transport': dict(choices=['cli']),
+    'transport': dict(default='cli', choices=['cli']),
 }
 ce_argument_spec = {
     'provider': dict(type='dict', options=ce_provider_spec),
diff --git a/lib/ansible/module_utils/eos.py b/lib/ansible/module_utils/eos.py
index dc80f3e4b1b..2cfb1fa2e92 100644
--- a/lib/ansible/module_utils/eos.py
+++ b/lib/ansible/module_utils/eos.py
@@ -53,7 +53,7 @@ eos_provider_spec = {
     'validate_certs': dict(type='bool'),
     'timeout': dict(type='int'),
 
-    'transport': dict(choices=['cli', 'eapi'])
+    'transport': dict(default='cli', choices=['cli', 'eapi'])
 }
 eos_argument_spec = {
     'provider': dict(type='dict', options=eos_provider_spec),
@@ -79,7 +79,7 @@ def check_args(module, warnings):
                     module.params[key]):
                 warnings.append('argument %s has been deprecated and will be removed in a future version' % key)
         else:
-            if key not in ['provider', 'authorize'] and module.params[key]:
+            if key not in ['provider', 'transport', 'authorize'] and module.params[key]:
                 warnings.append('argument %s has been deprecated and will be removed in a future version' % key)
 
     # set argument's default value if not provided in input
diff --git a/lib/ansible/module_utils/nxos.py b/lib/ansible/module_utils/nxos.py
index aecd9811523..4811f993b7e 100644
--- a/lib/ansible/module_utils/nxos.py
+++ b/lib/ansible/module_utils/nxos.py
@@ -51,7 +51,7 @@ nxos_provider_spec = {
     'validate_certs': dict(type='bool'),
     'timeout': dict(type='int'),
 
-    'transport': dict(choices=['cli', 'nxapi'])
+    'transport': dict(default='cli', choices=['cli', 'nxapi'])
 }
 nxos_argument_spec = {
     'provider': dict(type='dict', options=nxos_provider_spec),
diff --git a/lib/ansible/plugins/action/ce.py b/lib/ansible/plugins/action/ce.py
index f5a2e8bc32e..85ae6585898 100644
--- a/lib/ansible/plugins/action/ce.py
+++ b/lib/ansible/plugins/action/ce.py
@@ -100,6 +100,8 @@ class ActionModule(_ActionModule):
                     provider[key] = self._task.args[key]
                 elif 'fallback' in value:
                     provider[key] = self._fallback(value['fallback'])
+                elif 'default' in value:
+                    provider[key] = value['default']
                 elif key not in provider:
                     provider[key] = None
         return provider
diff --git a/lib/ansible/plugins/action/eos.py b/lib/ansible/plugins/action/eos.py
index 873051f99aa..b6b9e940d86 100644
--- a/lib/ansible/plugins/action/eos.py
+++ b/lib/ansible/plugins/action/eos.py
@@ -124,6 +124,8 @@ class ActionModule(_ActionModule):
                     provider[key] = self._task.args[key]
                 elif 'fallback' in value:
                     provider[key] = self._fallback(value['fallback'])
+                elif 'default' in value:
+                    provider[key] = value['default']
                 elif key not in provider:
                     provider[key] = None
         return provider
diff --git a/lib/ansible/plugins/action/nxos.py b/lib/ansible/plugins/action/nxos.py
index 9702e855603..ceb49d0e5e0 100644
--- a/lib/ansible/plugins/action/nxos.py
+++ b/lib/ansible/plugins/action/nxos.py
@@ -122,6 +122,8 @@ class ActionModule(_ActionModule):
                     provider[key] = self._task.args[key]
                 elif 'fallback' in value:
                     provider[key] = self._fallback(value['fallback'])
+                elif 'default' in value:
+                    provider[key] = value['default']
                 elif key not in provider:
                     provider[key] = None
         return provider