/ - - - - - - - - - - - - -  -
                  |            AS1              |
                    +-------+        +-------+
                  | |       |        |       |  |
                    | RTR-A |        | RTR-B |
                  | |       |        |       |  |
                    +-------+        +-------+
                  |       \           /         |
                     iBGP  \         / iBGP
                  |         \       /           |
                            +-------+
                  |         |       |           |
                            | RTR-C |
                  |         |  RC   |           |
                            +-------+
                  |           /   \             |
                             /     \
                  |   iBGP  /       \ iBGP      |
                    +-------+        +-------+
                  | | RTR-D |        | RTR-E |  |
                    |       |        |       |
                  | |       |        |       |  |
                    +-------+        +-------+
                  |     |                 |     |
                   - - -|- - - - - - - - -|- - -/
                        | eBGP       eBGP |
                   - - -|- - - - - - - - -|- - -/
                  |     |                 |     |
                    +-------+        +-------+
                  | |       |        |       |  |
                    | RTR-F |        | RTR-G |
                  | |       |        |       |  |
                    +-------+        +-------+
                  |            AS2              |
                  / - - - - - - - - - - - - -  -