diff --git a/validator/interface.py b/validator/interface.py
index e33eec1..60afa42 100644
--- a/validator/interface.py
+++ b/validator/interface.py
@@ -307,9 +307,11 @@ def unique_encapsulation(yaml, sub_ifname):
 
 
 def is_l2(yaml, ifname):
-    """ Returns True if the interface is an L2XC target or a member of a bridgedomain """
+    """ Returns True if the interface is an L2XC source, L2XC target or a member of a bridgedomain """
     if bridgedomain.is_bridge_interface(yaml, ifname):
         return True
+    if is_l2xc_interface(yaml, ifname):
+        return True
     if is_l2xc_target_interface(yaml, ifname):
         return True
     return False
diff --git a/validator/test_interface.py b/validator/test_interface.py
index fb9a94a..3d02bbd 100644
--- a/validator/test_interface.py
+++ b/validator/test_interface.py
@@ -125,6 +125,8 @@ class TestInterfaceMethods(unittest.TestCase):
     def test_l2(self):
         self.assertTrue(interface.is_l2(self.cfg, "GigabitEthernet3/0/0"))
         self.assertFalse(interface.is_l2(self.cfg, "GigabitEthernet1/0/0"))
+        self.assertTrue(interface.is_l2(self.cfg, "GigabitEthernet3/0/2.100"))
+        self.assertTrue(interface.is_l2(self.cfg, "GigabitEthernet3/0/2.200"))
 
     def test_l3(self):
         self.assertTrue(interface.is_l3(self.cfg, "GigabitEthernet1/0/0"))