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Aviz OPBNOS Enhances GTP Header Support for 5G Monitoring

November 7, 2025

Aviz OPBNOS has announced enhancements in GTP extension-header parsing and filtering, enabling improved visibility and traffic control for 5G networks. This update is especially relevant for IT leaders focusing on mobile network performance and Quality of Service (QoS) management.

Overview

The GPRS Tunneling Protocol (GTP) is crucial for managing user and control traffic within mobile networks. With the introduction of GTP extension headers, Aviz OPBNOS can now parse and filter packets containing these headers. This development supports refined packet filtering and forwarding within data centers and monitoring systems.

Supported GTP Extension Headers

PDU Session Container for 5G (0x85)

Utilized in 5G Standalone (SA) settings, the Power Distribution Unit (PDU) Session Container enhances user-plane flow management. It carries essential session and QoS information necessary for stringent enforcement and efficient network slicing.

  • Advanced traffic management: This feature streamlines routing to decrease congestion.
  • Enabling network slicing: It facilitates bandwidth and latency allocation across different sectors, such as healthcare and Internet of Things (IoT).
  • QoS prioritization: Ensures the protection of latency-sensitive applications through adjustments.

Advanced QoS Handling

This extension header enhances QoS through real-time optimization parameters.

  • Fine-grained QoS control: Targets metrics such as packet delay and jitter for high-demand applications.
  • Adaptive traffic steering: Collaborates with Product Carbon Footprint (PCF) in 5G to dynamically adjust priorities.
  • Resilience under congestion: Aims to reduce loss and delay during high traffic periods through efficient resource allocation.

What Open Packet Broker Does

Extension-Header Filtering & Load Balancing

  • Compatibility is ensured on NVIDIA Spectrum-2 and newer platforms by enabling the GTP parser via Command-Line Interface (CLI).
  • The GTP parser is upgraded to recognize major extension headers, allowing the Application-Specific Integrated Circuit (ASIC) to parse and filter based on GTP parameters.

Configuration

The Aviz Open Packet Broker can apply filters based on TEID, inner Internet Protocol (IP) headers, and Layer 4 ports.

Benefits

  • Seamless compatibility: Supports both standard and extended GTP packets.
  • Advanced packet filtering: Allows for filtering on inner headers, even in the presence of extension headers.
  • Optimized performance: Facilitates better management for contemporary mobile networks.
  • Future-proofing: Prepares for upcoming 5G slicing and advanced QoS capabilities.

The implementation of GTP extension-header support positions open networking solutions to effectively handle new mobile applications while maintaining compatibility with current infrastructures.

FAQs

1) What is GTP extension header monitoring and its significance for 5G networks?
It offers detailed visibility into PDU sessions and QoS, critical for managing user-plane traffic for applications requiring precise performance.

2) How does Aviz Open Packet Broker facilitate filtering of GTP extension headers?
OPBNOS filters based on TEID and inner Intrusion Prevention System (IPS), enabling detailed steering and immediate QoS implementation, even with extension headers present.

3) Why is filtering the PDU Session Container (0x85) essential for 5G QoS?
This container transmits QoS metadata pivotal for prioritizing critical services in real time.

4) What platforms are necessary for enabling GTP extension header filtering in OPBNOS?
NVIDIA Spectrum-2 or newer, with the CLI option to activate the GTP parser.

5) How does GTP extension header support enhance mobile network observability?
It provides in-band access to advanced QoS and slicing metadata, preparing operators for both current and future 5G applications efficiently.

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