DetNet                                         DetNet
IP    Service         Transit          Transit       Service  IP
DetNet               |<-Tnl->|        |<-Tnl->|               DetNet
End     |            V   1   V        V   2   V            |  End
System  |   +--------+       +--------+       +--------+   |  System
+---+   |   |   R1   |=======|   R2   |=======|   R3   |   |   +---+
|   |-------|._X_....|..DF1..|.__ ___.|..DF3..|...._X_.|-------|   |
|CE1|   |   |    \   |       |   X    |       |   /    |   |   |CE2|
|   |   |   |     \_.|..DF2..|._/ \__.|..DF4..|._/     |   |   |   |
+---+       |        |=======|        |=======|        |       +---+
    ^       +--------+       +--------+       +--------+       ^
    |        Relay Node       Relay Node       Relay Node      |
    |          (T-PE)           (S-PE)          (T-PE)         |
    |                                                          |
    |<-DN IP-> <-------- DetNet MPLS ---------------> <-DN IP->|
    |                                                          |
    |<-------------- End to End DetNet Service --------------->|

   -------------------------- Data Flow ------------------------->

    X   = Service protection (PRF, PREOF, PEF/POF)
    DFx = DetNet member flow x over a TE LSP