Because of the hierarchical topology of a modular design, the addressing is also simplified within the
data center network. Modularity also implies isolation of building blocks, so these blocks are
separated from each other and communicate through specific network connections between the
blocks. Therefore, modular design provides easy control of traffic flow and improved security. In
other words, these blocks are independent from each other; a change in one block does not affect
other blocks. Modularity also enables faster moves, adds, and changes (MACs), and incremental
changes in the network..