Full English Description for Cisco N9K-C93128TX

1. Part Number Naming Breakdown

Model: N9K-C93128TX

N9K: Cisco Nexus 9000 fixed data center switch family
C93: First-generation Nexus 9300 modular leaf hardware platform with expandable uplink slot
128: Chassis designation supporting 96 fixed copper downlinks + modular uplink port card
TX: Auto-sensing 100M/1G/10GBASE-T RJ45 copper downlink variant, Trident II ASIC, dual operation modes: standalone NX-OS and ACI fabric mode

2. Short Sales One-Liner (For BOM, Quotation & Datasheet Header)

Cisco Nexus N9K-C93128TX, 3RU rack-mount modular high-density leaf data center switch, 96 fixed auto-sensing 100M/1G/10GBASE-T RJ45 copper ports plus hot-swappable 6/12-port 40G QSFP+ uplink module, 2.56 Tbps non-blocking switching capacity, dual hot-swappable redundant power supplies and N+1 fan trays, dual-mode standalone NX-OS or ACI fabric operation, optimized for dense copper server aggregation, converged FCoE compute-storage fabrics and large-scale multi-tenant ACI data center deploymentsCisco.

3. Complete Product Overview Paragraph

The Cisco Nexus N9K-C93128TX is a 3RU fixed/modular hybrid Layer 2/3 Ethernet switch within the original Nexus 9300 classic portfolio, designed for high-density top-of-rack and middle-of-row leaf aggregation in enterprise virtualized data centers, unified FCoE compute-storage fabrics and ACI intent-based automated cloud infrastructures. Equipped with 96 built-in RJ45 copper ports supporting automatic speed negotiation of 100 Mbps, 1 Gbps and 10 Gbps, plus one dedicated rear expansion slot for interchangeable M6PQ (6×40G QSFP+) or M12PQ (12×40G QSFP+) uplink modules, the chassis delivers full wire-rate non-blocking forwarding with a total switching bandwidth of 2.56 Tbps and a forwarding throughput of 750 million packets per second for standard 64-byte minimum framesCisco. All copper ports comply with IEEE 802.3ab and 802.3an standards; Cat6A cabling supports full 10G transmission up to 100 meters, while Cat5e cabling restricts port speed to a maximum of 5 Gbps.

The chassis integrates dedicated out-of-band 1G RJ45 management, mini-USB RS232 console and dual USB Type-A ports to enable POAP zero-touch provisioning, offline configuration backup and firmware upgrades. Dual hot-swappable redundant power supply modules and N+1 redundant fan trays eliminate single points of hardware failure, with bidirectional airflow options (port-side intake / port-side exhaust) selectable at order time to fit diverse rack thermal layout requirementsCisco. This platform supports two independent operating modes: modular standalone Cisco NX-OS for traditional routed data center architectures, or native ACI fabric mode for policy-driven multi-tenant cloud automation. Onboard ASIC hardware acceleration enables EVPN/VXLAN overlay routing, FCoE Fibre Channel over Ethernet storage convergence and hardware 128-bit MACsec link encryption, paired with comprehensive streaming telemetry and open DevOps automation APIs to build linearly scalable leaf-spine fabrics. The modular uplink slot provides flexible 40G fabric uplink scaling options to match varying oversubscription ratios for server rack workloads.

4. Detailed Hardware Interface Specifications

Fixed Copper Downlink Ports (96 × Auto-Sensing 100M/1G/10GBASE-T RJ45)

Auto-negotiated speeds: 100BASE-TX, 1000BASE-T, 10GBASE-T
Cabling requirement: Cat6A for full 10G 100m transmission; Cat5e limited to max 5G speed
All 96 copper ports operate wire-rate simultaneously under full load without speed grouping limitations

Modular Uplink Expansion Slot (1 hot-swappable module slot)

Supported uplink modules:
1. M6PQ / M6PQ-E: 6 × QSFP+ 40G multi-rate ports
2. M12PQ: 12 × QSFP+ 40G multi-rate ports
QSFP+ ports support 1×40G or breakout to 4×10G via passive DAC breakout cables

Management & Auxiliary Ports

1 × 10/100/1000BASE-T RJ45 out-of-band management port
1 × Mini-USB RS232 console port for local CLI access
Dual USB 2.0 Type-A ports for configuration backup, firmware upload and POAP zero-touch deployment

Power & Cooling

Dual hot-swappable power supply options: 650W AC, 1200W AC, 930W DC (1+1 active sharing redundancy, live hot-swap without traffic interruption)Cisco
N+1 redundant variable-speed fan trays, airflow options: PI (port-side intake) / PE (port-side exhaust)
Operating temperature range: 0°C ~ 40°C full load; non-operating storage range: -40°C ~ 70°CCisco
Humidity tolerance: 5%–90% non-condensing; maximum operating altitude: 4000 metersCisco

Physical Form Factor

Dimensions: 3RU standard 19-inch rack chassis, 13.3cm (H) × 44.5cm (W) × 57.1cm (D)Cisco
Weight: 14.8 kg empty chassis (without PSUs, fans and uplink module)Cisco
RoHS-6 compliant, NEBS Level 3 qualified, 80Plus Platinum high-efficiency power certified

Core Hardware Performance Benchmarks

Total switching capacity: 2.56 Tbps full duplex non-blockingCisco
Forwarding rate: 750 mpps (64-byte frame wire-rate)Cisco
Shared dynamic packet buffer: 52MB for congestion absorptionCisco
MAC address table size: 128,000 MAC forwarding entries
IPv4 / IPv6 unicast route table capacity: 128,000 routing entries
VLAN support: Up to 4094 standard IEEE 802.1Q tagged VLANs
System memory: 16GB DRAM + 64GB onboard SSD storage
Typical cut-through switching latency: Less than 2 microseconds for minimum-size Ethernet framesCisco

5. Core Software Feature Suite (Dual NX-OS / ACI Operation Modes)

Layer 2 & Layer 3 Routing

Static routing, RIP, OSPFv2/v3, EIGRP, BGP, VRRP, PIM sparse/dense multicast, FCoE Fibre Channel over Ethernet for unified compute-storage fabrics

Cloud Fabric Overlay

Hardware-accelerated EVPN/VXLAN, symmetric & asymmetric VXLAN routing, multi-tenant fabric segmentation

Enterprise Security

802.1X port authentication, MAB MAC bypass authentication, DHCP Snooping, Dynamic ARP Inspection, CoPP control-plane policing, hardware 128-bit MACsec link encryption, TrustSec SGT zero-trust segmentation

Monitoring & Telemetry

Sampled IPFIX streaming telemetry, ERSPAN remote port mirroring, local SPAN / VSPAN, real-time port buffer and queue utilization monitoring

Automation & DevOps

POAP zero-touch provisioning, NX-API REST JSON/XML interfaces, embedded Linux Bash shell, Python scripting, containerized application hosting, ISSU in-service software upgrade without traffic downtime

High Availability

Modular fault-isolated process architecture, stateful process restart, redundant control plane, hot-swappable power supply, fan and uplink module FRUs

6. Typical Deployment Use Cases

High-density top-of-rack (ToR) leaf switch for large-scale 10G copper server rack aggregation
Converged compute/storage fabric node supporting FCoE SAN block storage workloads
Modular leaf access node for enterprise-scale ACI Application Centric Infrastructure fabrics with flexible 40G uplink scaling
Middle-of-row aggregation switch for multi-server rack consolidation in virtualized enterprise data centers

7. Datasheet Short Summary Paragraph

The Cisco Nexus N9K-C93128TX is a 3RU modular classic-generation data center leaf switch equipped with 96 auto-sensing 100M/1G/10GBASE-T RJ45 copper ports plus an interchangeable 6/12-port 40G QSFP+ uplink module, delivering 2.56 Tbps non-blocking switching performance with dual redundant power and cooling hardware. Supporting both standalone modular NX-OS and ACI fabric operational modes, it provides hardware VXLAN EVPN overlay, FCoE storage convergence and enterprise security acceleration, acting as a flexible high-density aggregation leaf switch for large virtualized enterprise and enterprise-scale ACI cloud data centers built on 10G copper server cabling.


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