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Diameter Routing Agent (DRA)
A Diameter Routing Agent (DRA) is a functional element in a 3G or 4G (such as LTE) network which provides real-time routing capabilities to ensure that messages are routed among the correct elements in a network. The DRA was introduced by the 3GPP to address the increased Diameter signaling traffic and growing complexity of 4G LTE networks.
Networks with complex architectures and multiple Diameter nodes require an advanced Diameter contextual routing engine. Choosing a DRA that’ s capable of advanced contextual routing is essential to managing network complexity and capitalizing on all that 4G LTE has to offer.
Key Benefits
Low CAPEX & OPEX
Single integrated platform for DRA and DEA
Interoperability
Allow to work different Diameter products and brands
High Scalability
NFV compliant allowing delivery on a range of cloud
Support multiple network
Diameter, RADIUS, SS7 and various IT protocols
Flexibility required for Roaming
DEA for connection to IPX and other operators
Future-proof, extendable approach
New interfaces and features can be supported by the same solution.
IPLOOK's DRA Enable interoperability, elastic growth and congestion control
- IPLOOK offers an integrated DRA software solution dedicated to run on any hardware or cloud infrastructure for Network Function Virtualization (NFV) to cope with such new challenge of engineering Diameter traffic deeply into the Evolved Packet Core (EPC) Network. Our solution is the enabler of fluid Diameter traffic between the key components of the IMS based network architecture namely HSS, AAA Server, PCRF, OCS on one side and PCEF, MME, PGW and SGSN on the other side thanks to its combination of DRA and Diameter Edge Agent (DEA) .
- IPLOOK DRA empowers operators and vendors to independently resolve signaling issues and enable advanced service scenarios, across vendor and access technologies.
Features
Peer-to-peer management:
- The connection to the peer fully complies with the RFC3588 standard
- The DRA device support static configuration of the peer, including the host name, IP address, port, etc. of the peer
- The DRA appliance supports redundant backup or load sharing of the signaling processing unit
- Multiple load-sharing and master Diameter links can be created between DRAs and between DRAs and other Diameter devices
- Support peer link fault detection function, and support for failover and reversionSupport peer link fault detection function, and support for failover and reversion
- VoNR
5GC NFV Architecture
- Supports addressing based on the content of the following Diameter messages
- IMSI
- Support multiple configurable fixed-length IMSI number prefixes for maximum matching, with priority to match by maximum length
- Full matching of IMSI number
- Application ID
Diameter signaling relay function
- Proxy Approach - Support the Relay/proxy method as defined by RFC3588
- Type of application
- For relay mode, it can support the routing of all Diameter applications.
- For proxy mode, it supports the route of Diameter application of S6a, S6d, S13, Cx interface, and can support the route of other Diameter application through software upgrade according to the need.
- The proxy mode for different Diameter applications is configurable, and the proxy mode for different nodes and the type of application supported are also configurable on a node-by-node basis.
Support RFC 6733 Standard Routing
Routing by message header and AVP contents
Support Complex Routing – Message / AVP etc
Black List / Whites based on Message Header and AVP contents
FAQ
What is a Diameter Routing Agent (DRA)?
A Diameter Routing Agent (DRA) is a network signaling component used in 3G, 4G LTE, and IMS networks to intelligently route Diameter signaling messages between network elements such as HSS, PCRF, OCS, MME, PGW, and AAA servers. It helps operators manage increasing signaling traffic and simplify complex multi-vendor network architectures.
Why is a DRA important in modern telecom networks?
As LTE and IMS networks grow, Diameter signaling traffic increases significantly due to mobility, authentication, policy control, and roaming services. A DRA centralizes signaling management, improves routing efficiency, reduces network complexity, and enhances interoperability across multiple network functions and vendors.
What are the key advantages of IPLOOK’s DRA solution?
IPLOOK’s DRA provides low CAPEX and OPEX, high scalability, NFV compatibility, multi-protocol support, and integrated DRA/DEA functionality on a single platform. It enables operators to optimize signaling traffic management while supporting cloud-native and virtualized deployments.
Does the solution support multi-vendor interoperability?
Yes. IPLOOK’s DRA is designed for interoperability with different Diameter products, IMS components, and telecom vendors. It supports standard Diameter interfaces and protocols, enabling seamless integration into heterogeneous telecom environments.
What deployment environments are supported?
The solution can be deployed on COTS hardware, virtual machines, NFV infrastructure, and cloud platforms. Its flexible architecture supports centralized and distributed deployment models, allowing operators to scale signaling capacity according to network growth.
What routing capabilities does the DRA provide?
IPLOOK’s DRA supports advanced contextual routing based on Diameter message headers, AVP contents, IMSI matching, application IDs, and application types. It also supports complex routing policies, blacklist/whitelist filtering, load sharing, redundancy, and failover mechanisms.
Which protocols and interfaces are supported?
The platform supports Diameter, RADIUS, SS7, and various IT protocols. It complies with RFC 3588 and RFC 6733 standards and supports routing for applications such as S6a, S6d, S13, and Cx interfaces, with additional application support available through software upgrades.
How does the DRA improve roaming and network reliability?
The integrated Diameter Edge Agent (DEA) enables secure interconnection with IPX providers and roaming partners. Features such as peer link fault detection, failover, redundancy, load balancing, and congestion control ensure reliable signaling delivery and stable roaming services across networks.
