The Cisco Nexus 9400 Series is a centralized modular chassis designed for the next generation of cloud and enterprise data centers requiring extreme density and scale. As a key component of the Nexus 9000 family, the C9400 provides the foundation for massive, scalable spine-leaf architectures.
Key Features (400G Density): The C9400 is optimized for high-speed fiber connectivity, supporting up to 25.6 Tbps of system bandwidth in a compact 4RU chassis. It offers ultra-high port density, capable of supporting up to 64 ports of 400G or 128 ports of 200G via its modular expansion slots. Running on Cisco’s Cloud Scale technology, the switch delivers robust High Availability with N+1 redundant components and flexible operation in either the highly automated Cisco ACI mode or traditional NX-OS mode. Advanced features include intelligent buffer management for AI/ML workloads (RoCE support) and MACsec/CloudSec for secure, encrypted fabrics.
As a certified Cisco Data Center Partner, Signellent Technologies provides expert design and implementation services for the Nexus 9400 Series, enabling you to build a secure, future-ready data center fabric optimized for 400G and massive cloud-scale workloads.
The Cisco Nexus 9400 Series is a centralized modular platform within the Nexus 9000 family, designed for the extreme scalability, high density, and performance requirements of next-generation data centers, hyperscale cloud environments, and massive-scale applications like AI/ML. As a modular chassis, it provides the flexibility to grow bandwidth and density over time.
Core Architectural Excellence:
Massive Scale: The chassis architecture (4RU, 8 expansion slots) is engineered to scale up to 25.6 Tbps of system capacity, supporting high-density 400 Gigabit expansion modules. It can be configured for up to 64 ports of 400G or 128 ports of 200G.
Future-Proof Silicon: The 9400 Series is powered by Cisco Cloud Scale Technology, which provides multi-speed support (1/10/25/40/50/100/400G) and a rich feature set for advanced data center fabrics.
Flexible Operation: It supports two primary operating modes:
Cisco ACI (Application Centric Infrastructure) Mode: Enables a policy-driven, intent-based networking model with centralized automation and application-level visibility.
Cisco NX-OS Mode: Provides traditional, feature-rich L2/L3 switching for standard data center deployments, including VXLAN EVPN and Segment Routing (SR).
High Availability and Advanced Features: The Nexus 9400 Series ensures continuous operation with redundant components (hot-swappable Supervisor, N+1 power supplies, and fan trays), and advanced features like MACsec (Layer 2 encryption) on all ports, intelligent buffer management to handle microbursts, and extensive programmability (POAP, NETCONF/YANG) for zero-touch provisioning and automation.
Signellent Technologies is a leading Cisco Data Center Partner specializing in architecting and deploying the modular Nexus 9400 Series switches. Partner with us for expert consultation, competitive pricing, and deployment services that guarantee your data center fabric is secure, agile, and optimized for your most demanding, cloud-scale workloads.
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