Ultra Ethernet 1.1 extends the specification to scale-up networks and adds programmable congestion control

The Ultra Ethernet Consortium (UEC) is pushing forward to meet evolving networking needs with the release of UEC 1.1 on October 12.

The short version

• The UEC got its start in 2023 to help improve Ethernet for the growing needs of AI and high-performance computing (HPC) networks.
• The consortium published its 1.0 specification in June 2025.
• That release defined a transport protocol, congestion control mechanisms and a modern remote direct memory access (RDMA) approach.

What happened

With UEC 1.1 , the specification is adding scale-up support, in-network collectives, and programmable congestion control. Specifically, the improvements in UEC 1.1 include: Scale-up networks.

Why it matters

The Unified Local profile covers short-range interconnects between accelerators, which often use one tier of switches or none.

Summary by Nerd News Network. Read the full article at Network World via the links above and below.