Cisco UCS Fabric Interconnect 6664

The Cisco UCS Fabric Interconnect 6664 is the next-generation centralized management and switching fabric for Cisco Unified Computing System environments, purpose-built to support the explosive bandwidth demands of AI, machine learning, and high-performance enterprise workloads. Featuring 64 unified ports capable of operating at 400 Gigabit Ethernet or as breakout configurations down to 100G and 40G, the 6664 provides a non-blocking switching architecture that eliminates I/O bottlenecks between server blades, GPU-dense AI nodes, and upstream network infrastructure. The platform extends the UCS Manager and Cisco Intersight management plane, allowing organizations to operate the fabric interconnect as a seamless component of a unified, policy-driven compute domain that spans on-premises data centers and hybrid cloud endpoints.

The 6664 is designed as the definitive interconnect for UCS X-Series chassis, UCS X9508 deployments, and next-generation AI server clusters where NVLink, RoCEv2, and GPUDirect storage traffic patterns demand low-latency, lossless Ethernet fabric behavior. Its architecture incorporates hardware-based Quality of Service, Priority Flow Control, and Data Center Bridging capabilities to guarantee lossless delivery for RDMA workloads without sacrificing throughput. The switching ASIC delivers a massive aggregate bandwidth increase over prior-generation 6400-series interconnects, allowing each chassis slot and server sled to receive dedicated high-bandwidth connectivity without oversubscription penalties common in legacy fabric designs.

From an operational standpoint, the Cisco UCS Fabric Interconnect 6664 integrates natively with Cisco Intersight for cloud-delivered infrastructure lifecycle management, firmware orchestration, and telemetry analytics. Redundant management interfaces, in-service firmware upgrades, and stateful switchover capabilities ensure continuous availability for mission-critical production environments. The 6664 supports Ethernet and Fibre Channel over Ethernet unified fabric, enabling organizations to consolidate LAN, SAN, and management traffic onto a single high-performance switching layer, dramatically reducing cabling complexity and operational overhead in dense rack and blade server deployments.

Ideal for

• Centralized fabric management for large-scale UCS X-Series chassis deployments supporting hundreds of compute nodes across enterprise data centers
• AI and machine learning infrastructure interconnect for GPU-dense server clusters requiring lossless RoCEv2 and GPUDirect storage traffic at 400G line rate
• Hyperconverged and composable infrastructure environments where unified LAN, SAN, and management traffic must be consolidated onto a single high-bandwidth fabric
• High-frequency financial services and algorithmic trading platforms demanding deterministic ultra-low-latency switching between compute and storage tiers
• Large enterprise private cloud deployments integrating UCS with Cisco ACI policy-defined networking for multi-tenant workload isolation and microsegmentation
• Healthcare and research computing environments running distributed simulation, genomic processing, and imaging workloads that require sustained high-throughput east-west bandwidth

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.