Add CDP support for the neighbors option (#37655) (#37667)

lib/ansible/modules/network/ios/ios_interface.py

@@ -328,7 +328,8 @@ def map_obj_to_commands(updates):
 
 def check_declarative_intent_params(module, want, result):
     failed_conditions = []
-    have_neighbors = None
+    have_neighbors_lldp = None
+    have_neighbors_cdp = None
     for w in want:
         want_state = w.get('state')
         want_tx_rate = w.get('tx_rate')
@@ -375,13 +376,15 @@ def check_declarative_intent_params(module, want, result):
         if want_neighbors:
             have_host = []
             have_port = []
-            if have_neighbors is None:
-                rc, have_neighbors, err = exec_command(module, 'show lldp neighbors detail')
+
+            # Process LLDP neighbors
+            if have_neighbors_lldp is None:
+                rc, have_neighbors_lldp, err = exec_command(module, 'show lldp neighbors detail')
                 if rc != 0:
                     module.fail_json(msg=to_text(err, errors='surrogate_then_replace'), command=command, rc=rc)
 
-            if have_neighbors:
-                lines = have_neighbors.strip().split('Local Intf: ')
+            if have_neighbors_lldp:
+                lines = have_neighbors_lldp.strip().split('Local Intf: ')
                 for line in lines:
                     field = line.split('\n')
                     if field[0].strip() == w['name']:
@@ -390,6 +393,20 @@ def check_declarative_intent_params(module, want, result):
                                 have_host.append(item.split(':')[1].strip())
                             if item.startswith('Port Description:'):
                                 have_port.append(item.split(':')[1].strip())
+
+            # Process CDP neighbors
+            if have_neighbors_cdp is None:
+                rc, have_neighbors_cdp, err = exec_command(module, 'show cdp neighbors detail')
+                if rc != 0:
+                    module.fail_json(msg=to_text(err, errors='surrogate_then_replace'), command=command, rc=rc)
+
+            if have_neighbors_cdp:
+                neighbors_cdp = re.findall('Device ID: (.*?)\n.*?Interface: (.*?),  Port ID .outgoing port.: (.*?)\n', have_neighbors_cdp, re.S)
+                for host, localif, remoteif in neighbors_cdp:
+                    if localif == w['name']:
+                        have_host.append(host)
+                        have_port.append(remoteif)
+
             for item in want_neighbors:
                 host = item.get('host')
                 port = item.get('port')