Aviz Networks details GTP extension header support in OPBNOS for 5G networks
Aviz Networks has enhanced its Open Packet Broker Network Operating System (OS) (OPBNOS) to support the parsing and filtering of GPRS Tunneling Protocol (GTP) extension headers, enabling refined visibility and control of 5G traffic flows critical for enterprise network operations and monitoring.
Research overview
GTP serves as a core protocol facilitating the encapsulation of both user and control traffic across mobile networks. The introduction of GTP Extension Headers adds metadata that supports more detailed session management and Quality of Service (QoS) policies, addressing the needs of modern 5G Standalone (SA) deployments.
Key findings
OPBNOS now processes extension headers such as the Power Distribution Unit (PDU) Session Container (0x85) and advanced QoS parameters. These headers include information vital for traffic management, like session identification and QoS requirements, allowing for functions such as network slicing and real-time prioritization of latency-sensitive applications.
Technical breakdown
The PDU Session Container encapsulates user-plane session data and QoS indicators, facilitating traffic routing, congestion mitigation, and differentiated treatment of services such as healthcare, Internet of Things (IoT), and autonomous systems. Advanced QoS headers support fine-grained control with metrics including packet delay budget, jitter, and loss, which are important for cloud gaming, Augmented Reality (AR), Virtual Reality (VR), and mission-critical IoT applications.
Product update
OPBNOS expands its GTP parser capabilities on NVIDIA Spectrum-2 and later platforms to detect extension header types and perform filtering based on inner headers like TEID, IP addresses, and layer 4 ports. Enabling this functionality requires Command-Line Interface (CLI) configuration to activate the extended parsing and filtering features.
Operational impact
With the integration of GTP extension header processing, network operators gain fine control over 5G traffic management, improving support for emerging use cases requiring dynamic QoS adjustments and network slicing. This development supports efficient traffic steering, load balancing, and congestion management by leveraging advanced ASIC-based parsing on compatible hardware.
Overall, the update positions OPBNOS to handle both conventional and extended GTP packets, delivering packet filtering that aligns with contemporary 5G network demands while remaining compatible with existing infrastructure elements.
This Blog Signals brief synthesizes the vendor's technical details on GTP extension header support in OPBNOS, providing enterprise IT and network leaders with facts to assess implications for 5G observability and traffic control strategies.