Table of Contents

• Title and Copyright Information
• What's New in This Guide
• Reference
• 1 Introduction to Diameter Signaling Router
  • 1.1 Diameter Routing Challenges
  • 1.2 Diameter Signaling Router Solution
• 2 DSR Features and Functions
  • 2.1 Overview
  • 2.2 DSR system architecture
    • 2.2.1 Operations, Administration and Maintenance
    • 2.2.2 Diameter Agent Message Processor (DA MP)
    • 2.2.3 STP Message Processor
    • 2.2.4 IP Front End
    • 2.2.5 Session or Subscriber Binding Repository
    • 2.2.6 Subscriber Data Server
    • 2.2.7 Database Processor
    • 2.2.8 Query Server
    • 2.2.9 Integrated Diameter Intelligence Hub
  • 2.3 DSR OAMP
    • 2.3.1 Network Interfaces
    • 2.3.2 Web-Based GUI
    • 2.3.3 Operations and Provisioning
    • 2.3.4 Maintenance
    • 2.3.5 DSR Dashboard
    • 2.3.6 Automatic Performance Data Export
    • 2.3.7 Administration
      • 2.3.7.1 Database Management
      • 2.3.7.2 File Management
    • 2.3.8 Security
    • 2.3.9 Machine/Machine Interface
  • 2.4 DSR Nodes
  • 2.5 Diameter Core Routing
    • 2.5.1 Extended Command Codes
    • 2.5.2 Redirect Agent Support
  • 2.6 Routing and Transaction Related Parameters in the DSR
    • 2.6.1 Peer Routing Table
    • 2.6.2 Application Routing Table
    • 2.6.3 Routing Option Sets
    • 2.6.4 Pending Answer Timer
    • 2.6.5 Transport
    • 2.6.6 Message Prioritization
    • 2.6.7 Diameter Routing Message Priority
    • 2.6.8 TLS / DTLS
    • 2.6.9 Configurable Disable of CEx Peer IP Validation
    • 2.6.10 Diameter Peer Discovery
    • 2.6.11 Implicit Realm Routing
    • 2.6.12 DNS Support
    • 2.6.13 Signaling Firewall
    • 2.6.14 Support Answer on Any Connection
    • 2.6.15 Congestion Control
      • 2.6.15.1 Per Connection Ingress MPS Control
      • 2.6.15.2 MP Overload Control
      • 2.6.15.3 Internal Resource Management
      • 2.6.15.4 Egress Transport Congestion
      • 2.6.15.5 Per Connection Egress MPS Control
      • 2.6.15.6 Egress Throttle Group (ETG) Limiting
        • 2.6.15.6.1 Example: DSR Connects to a Single Server Node with Multiple Connections
        • 2.6.15.6.2 Connection Pending Transaction Limiting
      • 2.6.15.7 Coordinated Egress Throttling Across Multiple DSRs
      • 2.6.15.8 Remote Busy Congestion
      • 2.6.15.9 Remote Transport Congestion Control
      • 2.6.15.10 Diameter Overload Indication Conveyance
        • 2.6.15.10.1 DOIC Capabilities Announcement
        • 2.6.15.10.2 DOIC Overload Reports
        • 2.6.15.10.3 DOIC AVP Blocking
        • 2.6.15.10.4 Loss Abatement Algorithm
          • 2.6.15.10.4.1 Abatement by Color/Priority
        • 2.6.15.10.5 Coming Out Of Overload
        • 2.6.15.10.6 Traffic Throttle Point
        • 2.6.15.10.7 DOIC Interaction with Routing
          • 2.6.15.10.7.1 Traffic Throttling Group
          • 2.6.15.10.7.2 TTG Configuration and Status Data
          • 2.6.15.10.7.3 Congestion-Aware Route Lists
          • 2.6.15.10.7.4 Interaction of DOIC within Route Groups
        • 2.6.15.10.8 DOIC Override Flag
          • 2.6.15.10.8.1 Handling of the DOIC Override Flag
  • 2.7 Next Generation Network Priority Service
  • 2.8 IP Front End
    • 2.8.1 Traffic Distribution
    • 2.8.2 High availability
  • 2.9 RADIUS Signaling Router
    • 2.9.1 RADIUS Routing
    • 2.9.2 RADIUS Overload Control
    • 2.9.3 RADIUS Message Format
    • 2.9.4 Authenticator
    • 2.9.5 Message Authenticator
    • 2.9.6 Connections and Peers
    • 2.9.7 Routing and Load-balancing
    • 2.9.8 Duplicate Detection
    • 2.9.9 Message / Traffic Control
  • 2.10 RADIUS-Diameter IWF for Authentication
  • 2.11 Diameter Mediation
    • 2.11.1 Rule Templates and Rules
    • 2.11.2 States of a Rule Template
    • 2.11.3 Trigger Points
    • 2.11.4 Measurements Associated with Rule
    • 2.11.5 AVP Dictionaries
  • 2.12 Topology Hiding
    • 2.12.1 S6a/S6d Topology Hiding
    • 2.12.2 Path Topology Hiding
    • 2.12.3 S9 PCRF Topology Hiding
    • 2.12.4 S9 AF/pCSCF Topology Hiding
  • 2.13 DSR Applications
    • 2.13.1 Range Based Address Resolution (RBAR)
    • 2.13.2 Full Address Based Resolution
    • 2.13.3 Policy and Charging Application (PCA)
    • 2.13.4 Gateway Location Application (GLA)
    • 2.13.5 Diameter Security Application (DSA)
    • 2.13.6 DSA – Cross Protocol Security
    • 2.13.7 DSA – Common Visualization Framework
    • 2.13.8 Service Based Interface Support
  • 2.14 Diameter Message Copy
  • 2.15 Virtualized network functions manager VNF
  • 2.16 Custom Application Framework (CAF)
    • 2.16.1 CAF Application Life Cycle Management
    • 2.16.2 Reference CAF Applications
  • 2.17 Integrated Diameter Intelligence Hub (IDIH)
    • 2.17.1 Network IDIH
    • 2.17.2 Supported Interfaces
  • 2.18 Security Assertion Markup Language (SAML)
    • 2.18.1 SAML Authentication Flow
    • 2.18.2 SAML Feature Description
    • 2.18.3 Enabling SAML Authentication functionality
    • 2.18.4 Disabling SAML Authentication functionality
    • 2.18.5 Viewing SAML Authentication functionality
    • 2.18.6 Uploading IDP Metadata
    • 2.18.7 Deleting IDP Metadata
    • 2.18.8 DSR/SDS Metafile
    • 2.18.9 Measurement Data Streaming (MDS)
      • 2.18.9.1 Troubleshooting
      • 2.18.9.2 Limitations
  • 2.19 Signaling Transfer Point (STP) Virtual Network Function (VNF)
    • 2.19.1 General
    • 2.19.2 Signaling Protocols
    • 2.19.3 SCCP -GLOBAL TITLE TRANSLATIONS (GTT) -ANSI/ITU
    • 2.19.4 Equipment Identity Register
• A Appendix A: Supported Diameter Interfaces