Fix for fex

roles/validate/files/rules/common/310_topology_switch_interface_breakouts.py

@@ -1,8 +1,14 @@
+import re
+
+
 class Rule:
     id = "310"
     description = "Verify if interfaces with sub-levels are part of the defined interface breakouts"
     severity = "HIGH"
 
+    # regex pattern: Ethernet[101-199]/1/[1-99]
+    IGNORE_FEX = re.compile(r'^(?:Ethernet)(?:(?:10[1-9]|1[1-9]\d)\/1\/([1-9]|[1-5][0-9])$)', re.IGNORECASE)
+
     @classmethod
     def match(cls, data_model):
         # Reset results at the start of each call to avoid retaining previous results
@@ -33,6 +39,10 @@ def match(cls, data_model):
                 interface_name = interface.get("name", "")
                 normalized_interface = interface_name.lower().replace("ethernet", "e").replace("eth", "e")
 
+                # Check if it's a FEX interface - skip validation
+                if cls.IGNORE_FEX.match(interface_name):
+                    continue
+
                 # Skip interfaces without sub-levels (e.g., E1/x)
                 if cls.has_sub_level(normalized_interface):
                     if not cls.is_interface_in_breakouts(normalized_interface, interface_breakouts):