In order to evaluate the benefits of the NCP+ anycast services, we compare unicast and anycast routing using a simulator [6] specially developed to simulate the functionalities of the NCP+ for both unicast and anycast requests. A NIPS request consists of (i) a single network unit demand (i.e. a wavelength) and (ii) several units of IT capacity (e.g. a number of servers). We assume a Poisson process for the arrival of the requests [7].