For their networks to respond to ever-changing needs and requirements, Tier 2—4 operators need to rethink how they deploy authentication, authorization and accounting (AAA) servers, Diameter routing agents (DRAs) and session border controllers (SBCs). This white paper covers several key considerations, including:
• The three main challenges of infrastructure security, network reliability and performance, and agility for the future
• How a software-based approach can help simplify operations, provide flexibility for growth and offer a path to the cloud
• The ways AAA, DRA and SBC serve as key functions in the Secure Service Enablement concept
