Keysight and Broadcom demonstrate Ultra Ethernet at 800GE line rate

Keysight Technologies Inc. (NYSE: KEYS) and Broadcom conducted an interoperability demonstration of Ultra Ethernet Consortium specification with Link Layer Retry and Credit-Based Flow Control at 800GE line rate at OFC 2026.

The demonstration featured Keysight's Interconnect and Network Performance Tester operating with Broadcom's Tomahawk Ultra Ethernet switch. Link Layer Retry enables local error recovery and reduces tail latency, while Credit-Based Flow Control provides link layer flow control capabilities.

The companies characterized this as the first public interoperability demonstration of the Ultra Ethernet Consortium specification at 800GE line rate. The demonstration utilized the newly released 1.0 specification from the Ethernet for Scale-Up Networking ecosystem.

Keysight serves as a contributor within the Ultra Ethernet Consortium and participates in defining validation methodologies for link layer capabilities. The company's Interconnect and Network Performance Tester provides testing capabilities for network performance validation.

"High-performance Ethernet is the technology of choice for AI Networking, and Broadcom was a founding member of the Ultra Ethernet Consortium," said Asad Khamisy, Vice President and GM, Core Switch Group at Broadcom. "Verifying compliance and interoperability is key to creating an open ecosystem."

Ram Periakaruppan, Vice President and GM, Network Applications & Security business at Keysight, stated that Ultra Ethernet technologies are becoming essential for next-generation network fabrics as AI clusters increase performance demands.

The demonstration took place at OFC 2026, focusing on capabilities designed to address network congestion and latency requirements in large-scale AI infrastructure deployments.

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