Ingress PE                       Egress PE
         +-------------------+        +------------------+
         |                   |        |                  |
         |    +-> IP-VRF ->  |        |      IP-VRF      |
         |    |           |  |        |                  |
         |   BT1        BT2  |        |  BT3         BT2 |
         |    |           |  |        |              | | |
         |    |           +--|--->----|--------------+ | |
         |    |              |        |                v |
         +-------------------+        +----------------|-+
              ^                                        |
              |                                        |
        TS1->-+                                        +->-TS2