5G SBA Gateway Overview

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Questions and Answers

What is the primary purpose of the SBA Gateway in a 5G network?

To replace the existing 4G core network infrastructure

To enable communication between 5G applications and the Engine (correct)

To increase the bandwidth of the network

To establish a new mobile communications standard

Which network function does the SBA Gateway serve as a front for?

Access and Mobility Function (AMF)

User Equipment (UE)

Site-level TRAs (correct)

Data Network (DN)

What type of messages does the SBA Gateway convert between JSON and which format?

XML format

Plain text format

HTML format

MATRIXX Data Container (MDC) format (correct)

What is a critical characteristic of SBA Gateway deployment in production?

At least two SBA Gateways are deployed to avoid single points of failure Signup and view all the answers

Which of the following interfaces does the SBA Gateway implement?

5G CHF and two Service Based Interfaces Signup and view all the answers

Which function does ActiveMQ serve in relation to the SBA Gateway?

It routes notification messages initiated by the Engine to the SBA Gateway Signup and view all the answers

What security feature is part of the SBA Gateway's protocol stack?

TLS Mutual Authentication (TLS/mAuth) Signup and view all the answers

Which component is NOT listed as part of the SBA Gateway's functionality?

Voice over IP Service Signup and view all the answers

What is the first step to take when configuring an Engine?

Backup create_config.info from the /opt/mtx/custom directory. Signup and view all the answers

Which script must be executed to propagate changes to all other Engine Blades?

configure_engine.py. Signup and view all the answers

What are the two required arguments when enabling tracing per Blade using set_trace.py?

Enable tracing and the Blade name. Signup and view all the answers

How can dynamic logging be applied across all Processing Cluster Blades?

By using run_cmd_on_cluster_script. Signup and view all the answers

What must be done after dynamically logging is completed to switch back to chosen default logging?

Run set_trace.py for a third time. Signup and view all the answers

What happens immediately after both steps of executing the set_trace.py script are completed?

The chosen log level is written to the mtx debug log file. Signup and view all the answers

What are the parameters specified for dynamic logging when using set_trace.py?

Service/task name and debug output options. Signup and view all the answers

In which situation is it useful to run the set_subscriber_trace.py script?

Before starting the Engine for the first time. Signup and view all the answers

Where can the ActiveMQ logs be found on the server?

/opt/activemq/data/activemq.log Signup and view all the answers

What is the primary purpose of implementing geo-redundancy in MDCP?

To ensure business continuity during major system failures Signup and view all the answers

What is the role of the TRA-LBs in the processing cluster?

They balance the load across all Processing Blades. Signup and view all the answers

Which log file is used for troubleshooting the MATRIXX Notifier?

/var/log/mtx/mtx_notifier_camel.log Signup and view all the answers

What happens when the Standby Engine starts up?

It uses Transaction Records from the Active Engine to rebuild its IMDBs. Signup and view all the answers

Which statement correctly describes the identifiers assigned to Engines?

They are constant and never change. Signup and view all the answers

In which scenario does the local IMDB get updated in the process?

When Transaction Records are forwarded to the Publishing Cluster. Signup and view all the answers

What is ensured by implementing Engines in at least two geographical locations?

Protection against a wider range of single points of failure. Signup and view all the answers

What is the role of the Network Enabler in message processing?

It applies load balancing to distribute messages to Camel Gateways. Signup and view all the answers

What is the first status in the cluster state transition when an Engine moves from Active to Standby?

Pre-Init Signup and view all the answers

Which command is most commonly used for a manual changeover to the standby engine?

activate_engine.py Signup and view all the answers

What happens when you run stop_engine.py on the active engine?

Control is handed over to the standby engine. Signup and view all the answers

Which statement is true about the MDCP replay flow in the processing of messages?

It remains consistent and independent of incoming message types. Signup and view all the answers

What is the main function of the Notifier in the MATRIXX system?

To format and deliver notifications to configured channels. Signup and view all the answers

What file type does the Notifier use to format notification messages?

FreeMarker templates Signup and view all the answers

Which command is NOT used to control the Notifier?

pause_notifier_camel.py Signup and view all the answers

Where can the Notifier configuration files be found?

/opt/mtx/conf Signup and view all the answers

What does the command print_blade_stats.py -N help to monitor?

Notification statistics from the Engine Signup and view all the answers

What should be done if a custom template for a specific notification type is not available?

Use the preformatted templates available. Signup and view all the answers

What information is NOT typically included in the notification monitoring summary?

User feedback Signup and view all the answers

What is the purpose of the separate queue for responses on the ActiveMQ servers?

To track acknowledgements of sent notifications. Signup and view all the answers

Study Notes

SBA Gateway Overview

The SBA Gateway is a Service-Based Architecture Gateway, crucial for enabling 5G applications to communicate with the Engine.
Functions as a front for Site-level Traffic Routing Agents (TRAs) and registers its URI with the Network Repository Function (NRF).
Sends regular heartbeat signals to the NRF for component discovery within the 5G Core network.
Converts JSON messages to MATRIXX Data Container (MDC) format and vice versa, essential for processing incoming traffic.
Deployed in production with at least two instances to prevent single points of failure.

5G Core Network Interaction

Interfaces with several key 5G Core network elements:
- Session Management Function (SMF) for session handling.
- Policy Control Function (PCF) for policy management.
- NRF for managing core entities.
The interaction involves message routing to the active Engine and notifies it using ActiveMQ.

Functionality and Configuration

The executable JAR for the SBA Gateway contains all libraries necessary to build a 5G Network Function.
Configuration involves several scripts:
- create_config.py updates local Engine configuration files.
- configure_engine.py propagates changes across Engine Blades.
- restart_engine.py applies the changes.

Dynamic Configuration and Logging

Dynamic logging is facilitated through set_trace.py, allowing for advanced troubleshooting.
Supports six log levels with the ability to set both debug and trace levels.
Logging can be configured on a per-Blade basis or across the Processing Cluster.

Notifier Framework

The MATRIXX Notifier formats messages using Apache Camel FreeMarker Templates.
Sends notifications via configured delivery channels (e.g., email servers) based on ActiveMQ messages.
Maintains three core logs for troubleshooting:
- MATRIXX ActiveMQ Gateway log.
- Apache ActiveMQ log.
- MATRIXX Notifier log.

Geo-Redundancy in MDCP

Implemented across the MDCP to promote business continuity during system failures through geographical distribution.
Engines retain a consistent identifier, with Engine 1 designated as primary.
Dynamic message processing involves forwarding messages between active and standby engines to maintain local IMDB consistency.

Cluster States and Management

An active peer cluster serves as the data source for standby clusters.
Multiple states of cluster transitions include Unknown, Pre-Init, Init, Post-Init, Active, Standby, Active-Sync, and Standby-Sync.
Management scripts can be executed on both active and standby Engines, allowing for manual changeovers using activate_engine.py or stop_engine.py to switch control between primary and standby.

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Description

This quiz covers the fundamentals of the Service Base Architecture (SBA) Gateway, its role in 5G applications, and its interaction with various network elements. Learn how the SBA Gateway facilitates communication between services and the significance of URI registration with the NRF.