fDRA

fDRA – FOSS Diameter Router Agent

fDRA (aka FOSS Diameter Router Agent) is yREMORA’s enterprise-grade Diameter signaling routing solution, engineered for modern telecommunications networks requiring AAA (Authentication, Authorization, and Accounting) signaling capabilities. Built on the robust open-source freeDiameter protocol implementation and distributed under a permissive BSD-like license, fDRA delivers carrier-class Diameter message routing with the flexibility of contemporary deployment architectures.

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Key Capabilities

Flexible Deployment Models

Deploy fDRA in containerized environments (Docker), virtualized infrastructure (VMware, KVM, OpenStack), or directly on bare-metal servers. Choose the architecture that fits your operational requirements.

Comprehensive Diameter Protocol Support

Full implementation of Diameter Base Protocol (RFC 3588/6733) with extensive application support including:

• 3GPP Interfaces: Gx, Gy, S6a, Cx/Dx for EPC and 5G Core networks
• IMS Applications: Ro, Rf, Sh for IP Multimedia Subsystem
• IETF Standards: NASREQ (RFC 4005), EAP (RFC 4072), Mobile IP, SIP (RFC 4740)
• PCRF, PGW, and other 3GPP network element integration

Advanced Routing and Load Balancing

Sophisticated Diameter message routing engine with:

• Peer connection management and failover
• Application-layer routing based on AVPs (Attribute-Value Pairs)
• Load distribution across Diameter peers
• Policy-based routing enforcement
• Watchdog mechanism for peer health monitoring

Intelligent Regex-Based Routing

Powerful regular expression pattern matching enables sophisticated routing logic with granular control over Diameter traffic flows:

• Destination-Realm and Destination-Host routing
• Session-Id based routing
• User-Name and IMSI-based routing decisions
• Custom AVP pattern matching
• Application-Id specific routing policies

Dynamic Routing Tables

Real-time route updates without service interruption via API provisioning. Modify routing policies, add new routes, or adjust traffic patterns on-the-fly without impacting active Diameter sessions.

RESTful API Management

Comprehensive API for configuration, provisioning, monitoring, and management, enabling automation, integration with various systems, and control of routing policies.

Extensible Architecture

Modular extension framework allows custom Diameter application development and protocol augmentation without modifying core components. Create bespoke routing logic, application handlers, and peer management plugins.

Integrated IMS Tools

Bundled administrative utilities for IMS network management:

• fDRA-SIP-RTR: SIP Registration Termination Request tool for forceful user deregistration
• fDRA-SIP-PPR: SIP Push Profile Request tool for user profile updates and accounting configuration

Open-Source Foundation

Leveraging the proven FOSS freeDiameter (github.com/open5gs/freeDiameter) framework ensures transparency, community-driven innovation, and freedom from vendor lock-in while maintaining enterprise-grade reliability. Distributed under BSD-like license allowing commercial use and modification.

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Ideal For

Perfect for mobile operators, IMS providers, MVNOs, Policy and Charging Rule Function deployments, and enterprises requiring reliable Diameter routing infrastructure for 4G/5G networks with modern deployment flexibility.

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Commercial Competition Analysis