----- L1
                                    /
        PID1   +----------+ 10 Gbps +----------+    PID3
 192.0.2.0/28+-+ +------+ +---------+          +--+192.0.2.32/28
               | | MEC1 | |         |          |   2001:db8::3:0/16
               | +------+ |   +-----+          |
        PID2   |          |   |     +----------+
192.0.2.16/28+-+          |   |         NET3
               |          |   | 15 Gbps
               |          |   |        \
               +----------+   |         -------- L2
                   NET1       |
                            +----------+
                            | +------+ |   PID4
                            | | MEC2 | +--+192.0.2.48/28
                            | +------+ |   2001:db8::4:0/16
                            +----------+
                                NET2