1 Introduction
This document describes procedures for disaster recovery for Diameter Signaling Router (DSR) (3-tier deployments). This includes recovery of partial or a complete loss of one or more DSR servers. The audience for this document includes GPS groups, such as software engineering, product verification, documentation, and customer service including software operations and first office application. Running this procedure also involves referring to and running procedures in existing support documents.
The components dependent on DSR may need to be recovered as well, for example SDS and IDIH.
Note:
Failures may occur from the host or infrastructure level. Different infrastructures have different approaches to recover VMs, which is not covered in this document. For example, VMware has a vMotion feature, which can migrate VM from one host to another. Any such Infrastructure or Hypervisor related migrations or disaster recovery scenarios are out of scope of this document. This document covers the DR scenarios within the DSR application.1.1 References
Oracle Communications Diameter Signaling Router Cloud Installation Guide
Oracle Communications Diameter Signaling Router or Subscriber Database Server NOAM Failover Users Guide
Diameter Signaling Router Policy and Charging Application Feature Activation Guide
1.2 Acronyms
Table 1-1 Acronyms
| Acronyms | Definition |
|---|---|
| BIOS | Basic Input Output System |
| CD | Compact Disk |
| DSR | Diameter Signaling Router |
| ESXi | Elastic Sky X Integrated |
| FABR | Full Address Based Resolution |
| iDIH | Integrated Diameter Intelligence Hub |
| IPFE | IP Front End |
| IWF | Inter Working Function |
| NAPD | Network Architecture Planning Diagram |
| NOAM | Network Operations, Administration & Maintenance |
| OS | Operating System |
| OVA | Open Virtualization Appliance |
| OVM-M | Oracle Virtual Machine Manager |
| OVM-S | Oracle Virtual Machine Server |
| PDRA | Policy Diameter Routing Agent |
| PCA | Policy and Charging Application |
| RBAR | Range Based Address Resolution |
| SAN | Storage Area Network |
| SFTP | Secure File Transfer Protocol |
| SNMP | Simple Network Management Protocol |
| SOAM | Systems Operations, Administration & Maintenance |
| TPD | Tekelec Platform Distribution |
| VM | Virtual Machine |
| vSTP | Virtual Signaling Transfer Point |
1.3 Terminology
Table 1-2 Terminology
| Procedure | Terminology |
|---|---|
| Base Software | Base software includes Deploying the VM image. |
| Failed Server | A failed server in Disaster Recovery context refers to a VM that has suffered partial or complete software failure to the extent that it cannot restart or be returned to normal operation and requires intrusive activities to reinstall the software. |
| Software Centric | The business practice of delivering an Oracle software product, while relying upon the customer to procure the requisite hardware components. Oracle provides the hardware specifications, but doesn’t provide the hardware or hardware firmware, and isn’t responsible for hardware installation, configuration, or maintenance. |
| Enablement | The business practice of providing support services (hardware, software, documentation, etc) that enables third party entity to install, configure, and maintain Oracle products for Oracle customers. |
1.4 Optional Features
Table 1-3 Optional Features
| Feature | Document |
|---|---|
| Diameter Mediation | DSR Cloud installation Procedure |
| Full Address Based Resolution (FABR) | DSR FABR Feature Activation Procedure |
| Range Based Address Resolution (RBAR) | DSR RBAR Feature Activation Procedure |
| Map-Diameter Interworking (MAP-IWF) | DSR MAP-Diameter IWF Feature Activation Procedure |
| Policy and Charging Application (PCA) | DSR PCA Feature Activation |
| Host Intrusion Detection System (HIDS) | DSR Security Guide |