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Aviz Open Packet Broker details GTP extension-header support for 5G session management and QoS

Source Decision Insights Coverage Published November 22, 2025 Companies 3
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3 companies named across 14 categories, one of 299 articles referencing Nvidia. Previous coverage: Aviz Networks details integration of ONES with NVIDIA Spectrum-X for AI networking (Nov 2025).

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Aviz Open Packet Broker's OPBNOS software now supports parsing and filtering of GPRS Tunneling Protocol (GTP) packets with extension headers, such as the Power Distribution Unit (PDU) Session Container (0x85) and advanced Quality of Service (QoS) parameters, to enhance 5G network visibility and traffic management.

Research overview

GTP is a core protocol used to encapsulate user and control traffic within mobile networks. The introduction of GTP extension headers adds metadata capabilities that support complex use cases in 5G Standalone (SA) deployments. OPBNOS has been updated to decode these extensions to allow improved filtering and forwarding in data center and monitoring network environments.

Key findings

The PDU Session Container (0x85) extension carries session and QoS information critical for enforcing network slicing and traffic prioritization. It enables operators to allocate network resources based on application requirements such as healthcare, Internet of Things (IoT), and autonomous systems. The advanced QoS extension provides parameters like packet delay budgets, jitter, and loss thresholds to support latency-sensitive applications, including cloud gaming and AR/VR.

Technical breakdown

OPBNOS supports GTP extension-header filtering and load balancing on NVIDIA Spectrum-2 and newer Application-Specific Integrated Circuit (ASIC) platforms. Enabling the GTP parser via the Command-Line Interface (CLI) allows the system to recognize main extension headers and filter traffic according to TEID, inner IP addresses, and layer 4 ports. This parsing capability enables detailed traffic steering and real-time QoS adjustments.

Operational impact

With this functionality, network operators can filter both standard and extended GTP packets seamlessly. OPBNOS's ability to match inner headers despite the presence of extension headers facilitates more effective traffic management. The approach also aligns with supporting 5G network slicing and emerging QoS features, aiding in managing diverse service requirements.

Leadership perspective

Monitoring GTP extension headers is essential for gaining deep visibility into 5G PDU sessions and enforcing QoS policies accurately. This precision enables prioritization for mission-critical and latency-sensitive workloads. The use of OPBNOS with NVIDIA Spectrum platforms equips operators to meet current and evolving observability demands tied to 5G networks.

In summary, the addition of GTP extension-header parsing and filtering in Aviz OPBNOS enhances mobile network monitoring and traffic control capabilities. This update offers a means to support the complexity of 5G session management and QoS optimization while maintaining compatibility with existing infrastructure. This Blog Signals brief provides a fact-based overview of the vendor blog post detailing these developments.

Blog post, originally published by Harrish S J at Aviz Networks.

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