MPLS (DetNet)                 MPLS (DetNet)
      Node-1                        Node-2

   +----------+                  +----------+
<--| Service* |-- DetNet flow ---| Service* |-->
   +----------+                  +----------+
   |Forwarding|                  |Forwarding|
   +--------.-+    <-TSN Str->   +-.-----.--+
             \      ,-------.     /     /
              +----[ TSN Sub-]---+     /
                   [ network ]--------+
                    `-------'
<---------------- DetNet MPLS --------------->

Note: * no service sub-layer required for transit nodes