diff --git a/src/python/loxi/of14/port_desc_prop.py b/src/python/loxi/of14/port_desc_prop.py
index 7b6aa89..217e004 100644
--- a/src/python/loxi/of14/port_desc_prop.py
+++ b/src/python/loxi/of14/port_desc_prop.py
@@ -61,6 +61,169 @@
         q.text('}')
 
 
+class experimenter(port_desc_prop):
+    subtypes = {}
+
+    type = 65535
+
+    def __init__(self, experimenter=None, exp_type=None):
+        if experimenter != None:
+            self.experimenter = experimenter
+        else:
+            self.experimenter = 0
+        if exp_type != None:
+            self.exp_type = exp_type
+        else:
+            self.exp_type = 0
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for length at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.exp_type))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        subtype, = reader.peek('!L', 4)
+        subclass = experimenter.subtypes.get(subtype)
+        if subclass:
+            return subclass.unpack(reader)
+
+        obj = experimenter()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _length = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_length, 4)
+        obj.experimenter = reader.read("!L")[0]
+        obj.exp_type = reader.read("!L")[0]
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        if self.experimenter != other.experimenter: return False
+        if self.exp_type != other.exp_type: return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("experimenter {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+                q.text("exp_type = ");
+                q.text("%#x" % self.exp_type)
+            q.breakable()
+        q.text('}')
+
+port_desc_prop.subtypes[65535] = experimenter
+
+class bsn(experimenter):
+    subtypes = {}
+
+    type = 65535
+    experimenter = 6035143
+
+    def __init__(self, exp_type=None):
+        if exp_type != None:
+            self.exp_type = exp_type
+        else:
+            self.exp_type = 0
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for length at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.exp_type))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        subtype, = reader.peek('!L', 8)
+        subclass = bsn.subtypes.get(subtype)
+        if subclass:
+            return subclass.unpack(reader)
+
+        obj = bsn()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _length = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_length, 4)
+        _experimenter = reader.read("!L")[0]
+        assert(_experimenter == 6035143)
+        obj.exp_type = reader.read("!L")[0]
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        if self.exp_type != other.exp_type: return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("bsn {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+            q.breakable()
+        q.text('}')
+
+experimenter.subtypes[6035143] = bsn
+
+class bsn_uplink(bsn):
+    type = 65535
+    experimenter = 6035143
+    exp_type = 0
+
+    def __init__(self):
+        return
+
+    def pack(self):
+        packed = []
+        packed.append(struct.pack("!H", self.type))
+        packed.append(struct.pack("!H", 0)) # placeholder for length at index 1
+        packed.append(struct.pack("!L", self.experimenter))
+        packed.append(struct.pack("!L", self.exp_type))
+        length = sum([len(x) for x in packed])
+        packed[1] = struct.pack("!H", length)
+        return ''.join(packed)
+
+    @staticmethod
+    def unpack(reader):
+        obj = bsn_uplink()
+        _type = reader.read("!H")[0]
+        assert(_type == 65535)
+        _length = reader.read("!H")[0]
+        orig_reader = reader
+        reader = orig_reader.slice(_length, 4)
+        _experimenter = reader.read("!L")[0]
+        assert(_experimenter == 6035143)
+        _exp_type = reader.read("!L")[0]
+        assert(_exp_type == 0)
+        return obj
+
+    def __eq__(self, other):
+        if type(self) != type(other): return False
+        return True
+
+    def pretty_print(self, q):
+        q.text("bsn_uplink {")
+        with q.group():
+            with q.indent(2):
+                q.breakable()
+            q.breakable()
+        q.text('}')
+
+bsn.subtypes[0] = bsn_uplink
+
 class ethernet(port_desc_prop):
     type = 0
 
@@ -160,67 +323,6 @@
 
 port_desc_prop.subtypes[0] = ethernet
 
-class experimenter(port_desc_prop):
-    subtypes = {}
-
-    type = 65535
-
-    def __init__(self, experimenter=None, exp_type=None):
-        if experimenter != None:
-            self.experimenter = experimenter
-        else:
-            self.experimenter = 0
-        if exp_type != None:
-            self.exp_type = exp_type
-        else:
-            self.exp_type = 0
-        return
-
-    def pack(self):
-        packed = []
-        packed.append(struct.pack("!H", self.type))
-        packed.append(struct.pack("!H", 0)) # placeholder for length at index 1
-        packed.append(struct.pack("!L", self.experimenter))
-        packed.append(struct.pack("!L", self.exp_type))
-        length = sum([len(x) for x in packed])
-        packed[1] = struct.pack("!H", length)
-        return ''.join(packed)
-
-    @staticmethod
-    def unpack(reader):
-        subtype, = reader.peek('!L', 4)
-        subclass = experimenter.subtypes.get(subtype)
-        if subclass:
-            return subclass.unpack(reader)
-
-        obj = experimenter()
-        _type = reader.read("!H")[0]
-        assert(_type == 65535)
-        _length = reader.read("!H")[0]
-        orig_reader = reader
-        reader = orig_reader.slice(_length, 4)
-        obj.experimenter = reader.read("!L")[0]
-        obj.exp_type = reader.read("!L")[0]
-        return obj
-
-    def __eq__(self, other):
-        if type(self) != type(other): return False
-        if self.experimenter != other.experimenter: return False
-        if self.exp_type != other.exp_type: return False
-        return True
-
-    def pretty_print(self, q):
-        q.text("experimenter {")
-        with q.group():
-            with q.indent(2):
-                q.breakable()
-                q.text("exp_type = ");
-                q.text("%#x" % self.exp_type)
-            q.breakable()
-        q.text('}')
-
-port_desc_prop.subtypes[65535] = experimenter
-
 class optical(port_desc_prop):
     type = 1