Fault-tolerant AAA HSS/DIAMETER Services across
IMS Framework
DIAMETER Messaging Redirection and Load Distribution
AppDirector™ and
AppXcel™ employ effective management of DIAMETER messaging, load balancing and redirection to distribute DIAMETER messages across multiple DIAMETER servers. Radware's solution makes it possible to eliminate service latencies and process DIAMETER requests in parallel, independently of the TCP session, based on DIAMETER service availability and performance. AppDirector and AppXcel manage session initiation (CER) and termination (DPR) to manage the entire DIAMETER transaction using the same DIAMETER server, ensuring high availability and transaction completion assurance.
DIAMETER High Availability
The health of the DIAMETER application and DIAMETER servers is continuously monitored to identify and bypass transaction failures. AppDirector and AppXcel DIAMETER health checks include session initiation and client authentication. In the event of an authentication, authorization and accounting (AAA) failure, AppDirector and AppXcel redirect DIAMETER requests to an operative server for uninterrupted and high-performing AAA processing.
DIAMETER Burst Distribution and Service Responsiveness
AppDirector and AppXcel distribute DIAMETER transaction processing across servers, heightening service responsiveness to end users and managing traffic peaks and bursts resulting from high reconnection rates following infrastructure element failure.
DIAMETER Virtualization and Global Disaster Recovery
AppDirector and AppXcel global load balancing (GLB) ensures optimized DIAMETER messaging load distribution across all DIAMETER server farms. AppDirector and AppXcel GLB enable the complete virtualization of DIAMETER services, distributing DIAMETER messages across multiple data centers and geographic locations for flexible and cost-effective DIAMETER infrastructure configurations and management.
DIAMETER Consolidation and Scalability for CAPEX/OPEX Savings
Employing AppDirector and AppXcel to front-end DIAMETER services makes it possible to aggregate and scale DIAMETER services, to create centralized DIAMETER service architectures across home subscriber servers (HSS) and IP multimedia subsystem (IMS) frameworks and reduce costs associated with DIAMETER service build-out to meet growing IMS AAA service requirements.