Evolved packet core (EPC) networks provide mobile data services to 2G, 3G, and 4G subscribers in parallel. Alongside these networks, many operators are
deploying advanced policy control solutions and IP multimedia subsystem (IMS) networks in order to create new service offerings, such as Voice-over-LTE
(VoLTE) and Voice-over-WiFi (VoWiFi), and to optimize their network core. The emergence of 5G networks adds yet another network variant to the mix.
All of these networks rely extensively on internode communication carried over the Diameter protocol. With many dozens of connected nodes, a mesh of
point-to-point connections is expensive, error prone and difficult to both administer and troubleshoot.
An efficient and centralized Diameter routing solution is needed in order to streamline and simplify core node connectivity, transforming an ever-growing
n-way mesh into an easily understood and maintained hub and spoke architecture.