Full English Description for Cisco N9K-C92300YC
1. Part Number Naming Breakdown
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N9K: Cisco Nexus 9000 cloud-scale data center fixed switch product family
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C92: Nexus 9200 compact Cloud Scale ASIC leaf/spine switch hardware platform
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300: Mixed port density combination (48 × SFP28 + 18 × QSFP28 hybrid port layout)
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Y: Native multi-rate 1/10/25G SFP28 server downlink ports
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C: Native multi-rate 40/100G QSFP28 uplink ports with flexible breakout capability
2. Short Sales One-Liner (For BOM, Quotation & Datasheet Header)
Cisco Nexus N9K-C92300YC, 1RU rack-mount hybrid-port cloud data center leaf switch, 48 × 1/10/25G SFP28 downlink ports plus 18 × 40/100G QSFP28 uplink ports, 6.0 Tbps non-blocking switching capacity, dual hot-swappable redundant power supplies and variable-speed fan trays, running modular Cisco NX-OS, optimized for 25G server rack leaf aggregation, multi-tenant IaaS and virtualized enterprise fabric deployments with high-speed 100G uplink scalabilityCisco.
3. Complete Product Overview Paragraph
The Cisco Nexus N9K-C92300YC is a compact 1RU fixed-port hybrid multi-rate Ethernet leaf switch within the Nexus 9200 platform portfolio, purpose-built for top-of-rack (ToR) leaf roles in modern enterprise, service provider and IaaS cloud data centers with 25G server access requirements. Equipped with a mixed port layout of 48 universal SFP28 downlink slots for server/storage connectivity and 18 dedicated QSFP28 uplink slots for inter-switch fabric interconnection, the device delivers full line-rate Layer 2 and Layer 3 forwarding across all ports with a total switching bandwidth of 6.0 Tbps and wire-rate forwarding throughput of 4.75 billion packets per second (bpps) Cisco.
Each SFP28 downlink port auto-negotiates 1G / 10G / 25G and supports FC-FEC for reliable 25G optical transmission, while every QSFP28 uplink port supports flexible breakout configurations: 1×100G, 1×40G, 2×50G, 4×25G or 4×10G to match evolving fabric uplink speed demands. Short-reach passive DAC cables up to 3 meters are fully supported for rack internal connections to reduce deployment cost.
The chassis integrates dedicated out-of-band RJ45 management, mini-USB console and USB storage ports for POAP zero-touch provisioning and offline configuration management. Dual redundant hot-swappable AC power supplies and N+1 variable-speed fan trays eliminate single points of hardware failure, supporting bidirectional airflow options (port-side intake / port-side exhaust) to accommodate diverse rack thermal design standards. It operates on fault-isolated modular Cisco NX-OS software without mandatory ACI controller dependency, featuring native hardware-accelerated EVPN/VXLAN overlay routing, hardware MACsec encryption, full streaming telemetry and open DevOps automation tooling, enabling scalable multi-tenant fabric architectures. As a hybrid-density leaf switch balancing abundant 25G server ports and rich 100G uplink capacity, the N9K-C92300YC optimizes rack space for virtualization host racks, database storage aggregation and 1:1 oversubscription cloud workloads.
4. Detailed Hardware Interface Specifications
Hybrid Data Port Layout
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Downlink ports: 48 × universal hot-pluggable SFP28 slots
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Supported speeds: 1G, 10G, 25G; FC-FEC enabled for 25G optical links
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Compatible transceivers: SFP28 25G, SFP+ 10G, SFP 1G; up to 3m passive DAC cables supported
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Uplink ports: 18 × universal hot-pluggable QSFP28 multi-rate slots
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Per-port breakout options: 1 × 100G, 1 × 40G, 2 × 50G, 4 × 25G, 4 × 10G
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Compatible transceivers: QSFP28 100G, QSFP+ 40G, SFP28 25G, SFP+ 10G via breakout cables
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Full non-blocking wire-rate forwarding on all 66 ports simultaneously
Management & Auxiliary Ports
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1 × 10/100/1000BASE-T RJ45 out-of-band management port
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1 × Mini-USB RS232 console port for local CLI access
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1 × USB 2.0 Type-A port for firmware upload, config backup and POAP zero-touch deployment
Power & Cooling
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Dual hot-swappable 650W AC power supply modules (1+1 active sharing redundancy, live hot-swap without service interruption)Cisco
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N+1 redundant variable-speed fan trays, bidirectional airflow selectable at ordering: PI (port-side intake) or PE (port-side exhaust)
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Operating temperature range: 0°C to 40°C under full load; non-operating storage range: -40°C to 70°C
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Humidity tolerance: 5%–85% non-condensing; maximum operating altitude: 4000 meters
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Acoustic noise optimized for data center rack deployment
Physical Form Factor
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Dimensions: 1RU standard 19-inch rack-mount chassis, 4.4 cm (H) × 43.9 cm (W) × 57.1 cm (D)
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RoHS-6 compliant, NEBS Level 3 qualified, ENERGY STAR certified
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System memory: 16GB RAM + 64GB onboard SSD storage
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Shared dynamic packet buffer: 30MB for congestion absorption across all ports
Core Hardware Performance Benchmarks
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Total switching capacity: 6.0 Tbps full duplex non-blocking
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Forwarding rate: 4.75 bpps (64-byte minimum frame wire-rate)
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MAC address table size: 128,000 MAC entries
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IPv4 / IPv6 unicast route table capacity: 128,000 entries
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Standard VLAN support: Up to 4094 independent VLANs
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End-to-end switching latency: Less than 2 microseconds for minimum-size frames
5. Core NX-OS Software Feature Suite
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Layer 2 & Layer 3 Routing: Static routing, RIP, OSPFv2/v3, EIGRP, BGP, VRRP, PIM sparse/dense multicast
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Cloud Fabric Overlay: Hardware-accelerated EVPN/VXLAN, symmetric/asymmetric VXLAN routing, VXLAN multicast optimization for multi-tenant fabrics
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Enterprise Security: 802.1X port authentication, MAB, DHCP Snooping, Dynamic ARP Inspection, CoPP, hardware MACsec 128/256-bit encryption, TrustSec SGT tagging and zero-trust segmentation
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Monitoring & Telemetry: Sampled/unsampled IPFIX streaming telemetry, ERSPAN, SPAN, VSPAN, real-time buffer, queue and port utilization visibility
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Automation & DevOps: POAP zero-touch provisioning, NX-API REST JSON/XML, native Linux Bash shell, Python scripting, containerized application hosting, hot patching without full system reboot
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High Availability: Modular fault-isolated process architecture, stateful process restart, ISSU in-service software upgrade, redundant control plane
6. Typical Deployment Use Cases
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Top-of-Rack (ToR) leaf switch for 25G virtualization server and storage rack aggregation
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Hybrid-density leaf with abundant 100G uplinks for medium-scale cloud fabric border aggregation
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Virtualized enterprise data center access layer supporting mixed 10G/25G server generations
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Multi-tenant IaaS workload racks requiring scalable high-speed uplink capacity for inter-fabric traffic
7. Datasheet Short Summary Paragraph
The Cisco Nexus N9K-C92300YC is a 1RU compact hybrid-port cloud-scale data center leaf switch with 48 × 1/10/25G SFP28 server downlinks plus 18 × multi-rate 40/100G QSFP28 fabric uplinks, delivering 6.0 Tbps non-blocking switching performance with dual redundant power and cooling modules. Running modular Cisco NX-OS with native hardware-accelerated EVPN/VXLAN overlay and enterprise-grade security functions, it serves as an ideal top-of-rack leaf switch for modern 25G server data centers, supporting open DevOps automation and zero-touch provisioning for virtualized enterprise and multi-tenant IaaS cloud fabric deployments.
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