+-----------------+
   |DHCP Server No 1 |    +-------+
   +----------|---|--+    |HOST 1 |
              |   +------>|       |
              |           +-------+
              |              .
              |              . 
              |              .
              |              
              |        +------------------+
              +--------| DHCP Server No 2 |
                       +---------------|--+
                                       |        +-------+
                                       +------->|HOST N |
                                                +-------+