Cisco N3K-C3132Q-40GX Full Product Description

1. Short Overview

• Suffix breakdown definition:
  • Q= 32 × 40G QSFP+ fabric ports + 4 multiplexed SFP+ auxiliary ports
  • -40GX= Enhanced X-series silicon variant with expanded buffer capacity and improved latency jitter suppression, bare chassis with no bundled power, fan or optical FRUs
• Core differentiators vs N3K-C3132Q-40GE: Upgraded X-series ASIC with deeper dynamic buffer, optimized latency consistency for burst-heavy storage/trading traffic, enhanced telemetry counters, and improved EVPN/VXLAN performance for multi-tenant cloud fabricsCisco.

2. Part Number Breakdown & Cross-Model Comparison

Full PN Breakdown

1. N3K: Cisco Nexus 3000 Series low-latency programmable data center Layer 2/3 switch family
2. C3132Q-40GX: 1RU enhanced X-generation all-fiber leaf bare chassis
   • 3132: High-density 3100 platform with total 36 combined ports
   • Q: 32 universal 40G QSFP+ fabric ports + 4 multiplexed SFP+ auxiliary ports
   • 40GX: Bare unpopulated enhanced X silicon chassis optimized for 40G fiber workloads; no factory pre-installed power, fan or optical transceivers
3. Airflow flexibility: Two FRU families available: Port-side Intake (PI / reverse airflow) and Port-side Exhaust (PE / forward airflow). Mismatched airflow power supply and fan tray modules trigger thermal protection shutdown.

Hardware Comparison Table

Factory Bare Chassis Included Hardware

1. 1RU standard 19-inch horizontal rack-mount passive switch chassis
2. Rear port panel interface bank:
   • 32 × universal 40G QSFP+ bidirectional ports for leaf-spine inter-switch uplinks, all-flash storage, virtualization hosts
   • 4 × SFP+ 1/10G auxiliary ports multiplexed with QSFP+ port 1, dedicated for low-speed storage replication, secondary management links
3. Front integrated out-of-band management subsystem:
   • RJ45 hybrid RS232 serial console port
   • Dedicated 10/100/1000BASE-T out-of-band MGMT Ethernet port
   • USB Type-A flash storage port for offline firmware upload, configuration backup and POAP provisioning files
4. Full front-panel LED status array: Global system health (green normal / amber critical fault), individual PSU fault alarms, fan tray fault indicators, per-port dual-color link/activity LEDs, blue UID locator beacon for rack asset identification during maintenance
5. Dual hot-swappable power supply bays (compatible with separate PI / PE airflow AC/DC power FRUs)
6. Single hot-swappable fan tray slot with multiple redundant internal fans; airflow direction determined by matching fan/PSU FRU selection
7. Standard 19-inch rack mounting rails, front cable management brackets, hardware installation guide and global safety regulatory compliance documentation
8. No power supplies, fan trays or optical transceivers pre-installed (all FRUs sold separately as spare parts)

Items Not Included (Must Be Ordered Separately)

1. Hot-swappable AC/DC redundant power supplies (500W / 650W rating, port-intake PI or port-exhaust PE airflow variants optional; dual PSUs recommended for 1+1 power redundancy)
2. Single hot-swappable fan tray assembly with redundant internal fans; airflow direction must fully match the selected power supply modules
3. QSFP+ transceivers for all 32 fabric ports: 40G SR4/LR4/ER4, BiDi optics, passive Twinax DAC, active AOC fiber cables, and QSFP-to-4×SFP+ breakout splitter modules
4. SFP+ transceivers for 4 multiplexed auxiliary ports: 1G/10G SR/LR/ER optical modules, Twinax/AOC DAC fiber cables
5. Optional accessories: Serial console rollover cable, out-of-band management Ethernet patch cords, lockable front door, air filter panel
6. Software licenses: N3K-BAS1K9 base license unlocks full Layer 3 routing functionality; base Layer 2 switching enabled without additional license fees; VXLAN bridging supported with standard NX-OS firmware upgrade

Supported Fabric & Parent Switch Compatibility

• Full unified fabric + lossless DCB FCoE: Cisco Nexus 5500 / 5600 / 6000 Series (minimum NX-OS 7.0(3)I3(1))
• Layer 2/Layer3 Ethernet only: Nexus 7000 / 7700 / 9000 Series
• Native interoperability with Nexus 2000 blade & 2300 rack FEX devices for end-to-end consolidated LAN/SAN data center architecture
• SDN compatibility: OpenFlow 1.3, NX-API REST APIs, Ansible/Puppet/Chef DevOps automation integration

3. Hardware Port & Slot Layout

Rear Panel 32 QSFP+ 40G Fabric Ports & 4 Multiplexed SFP+ Auxiliary Ports

1. 32 × Universal 40G QSFP+ Bidirectional Ports
   IEEE 802.3ba compliant 40G fiber interfaces with two configurable operation modes:
2. Native 40GE mode: Direct high-bandwidth inter-switch leaf-spine uplinks for scalable data center core interconnections
3. Breakout mode: With QSFP-to-4×SFP+ splitter transceivers, each port expands to four independent 10GE channels to multiply downlink port density and reduce optical hardware costs for 10G server/storage access
   All ports support jumbo frames up to 9216-byte MTU, long-reach LR4/ER4 transceivers for cross-facility DCI interconnections, and IEEE DCB PFC/ETS lossless Ethernet for FCoE unified storage workloads. All Layer 2 switching, ACL, MAC security and QoS policies are enforced locally on the switch hardware. The X-series ASIC delivers enhanced buffer absorption to eliminate packet loss under heavy traffic bursts.
4. 4 × Multiplexed SFP+ 1/10G Auxiliary Ports
   Shared multiplexed interfaces tied to the first QSFP+ slot, supporting auto-negotiation 1G or 10G speeds for low-speed out-of-band replication, secondary management links or small-scale server downlinks. Separate SFP+ transceivers must be ordered to activate these ports.

Front Panel Redundant FRU Slots & Out-of-Band Management Interfaces

1. Dual hot-swappable AC/DC power supply bays (supports 1+1 redundant power inputs for non-disruptive live PSU replacement without full switch reboot)
2. Single hot-swappable fan tray assembly with multiple redundant internal fans; airflow direction fully determined by matching fan and power supply FRU selection
3. Dedicated independent out-of-band management block: Serial console port, 1G MGMT Ethernet port and USB flash storage port for offline firmware upgrade and configuration management, fully isolated from production data plane traffic.

Front Panel LED Status Array

• Global health LED: Solid green = normal operational state, solid amber = critical hardware fault
• Separate fault indicator LEDs for each power supply and fan tray assembly
• Per-port dual-color link/activity LEDs for all 32 rear QSFP+ fabric ports and four multiplexed front SFP+ auxiliary ports
• Remote-activatable blue UID beacon LED for fast rack asset identification during maintenance windows

4. Hardware Performance Specifications

1. Total downlink bandwidth: 32 × 40G wire-speed ports, aggregate 1280 Gbps full-duplex host bandwidth
2. Total uplink bandwidth: 32 × 40G bidirectional fabric ports (all ports function as flexible uplink/downlink), aggregate 1280 Gbps upstream fabric bandwidth
3. Fixed oversubscription ratio: 2:1 (1280 Gbps total host downlink bandwidth / 1280 Gbps total fabric uplink bandwidth)
4. Non-blocking full-duplex switching fabric capacity: 2.56 Tbps
5. Wire-speed forwarding throughput: 1.4 Bpps (billion packets per second) at minimum 64-byte Ethernet frames (all ports operate full line-rate L2/L3 simultaneously)
6. Forwarding latency: Enhanced ultra-low deterministic microsecond-scale store-and-forward latency with reduced jitter, optimized for low-jitter financial HFT and parallel HPC workloads
7. Dynamic shared packet buffer: Expanded large unified shared buffer pool unique to-GXvariant to mitigate packet loss under heavy bursty virtualization and storage replication traffic
8. MAC address table capacity: 288,000 MAC entry storage
9. VLAN scaling: Up to 4096 standard IEEE 802.1Q tagged VLANs
10. Jumbo frame MTU: Configurable up to 9216 bytes for storage replication and large-scale big-data workloads
11. Spanning tree scale: 64 MSTP instances, 512 RSTP instances
12. Port-channel scaling: Maximum 64 EtherChannels, up to 16 physical ports per LACP fabric port-channel / vPC trunk
13. Zero-touch POAP provisioning: Automatic firmware synchronization, full configuration download and fleet-wide bulk upgrades triggered via a singleinstall allCLI command on the parent aggregation switch
14. Hardware lossless DCB & traffic offload features (fully controlled by NX-OS software):
    • IEEE 802.1Qbb PFC and 802.1Qaz ETS lossless Ethernet for FCoE unified storage transport
    • vPC, FEX vPC and Enhanced vPC (EvPC) redundant Layer 2 multipathing high availability
    • Four independent hardware priority queues per port with WRR/DRR traffic scheduling
    • PVLAN private VLAN isolation, UDLD link failure monitoring, broadcast/multicast storm control
    • IEEE 1588 PTP boundary clock for precise sub-microsecond time synchronization in financial co-location environments
    • Expanded SAN-specific debug counters to track FCoE pause frames and storage buffer credit loss (enhanced X-series counter set)

Physical & Environmental Parameters

• Form Factor: 1 RU (43.7 mm height) standard 19-inch horizontal rack mount
• Dimensions (H × W × D): 43.7 mm × 439.4 mm × 505 mm (1.72 × 17.3 × 19.7 inches)
• Bare chassis weight (no PSUs, fans, transceivers): ~8.5 kg (18.7 lbs)
• Fully loaded maximum weight (dual PSUs + fan tray + fully populated transceivers): ~11.2 kg (24.7 lbs)
• Operating temperature range: 0°C ~ 40°C (32°F ~ 104°F); certified altitude up to 3,000 meters (10,000 ft)
• Storage temperature range: -40°C ~ 70°C (-40°F ~ 158°F)
• Operating relative humidity: 10%–85% non-condensing; storage humidity 5%–95% non-condensing
• Compliance Certifications: FCC Class A, UL 60950-1, CE, VCCI Class A, NEBS Level 3, GR63 seismic compliance, RoHS 6 validated

AC Power Supply FRU Specifications (Sold Separately)

• AC PSU input range: 100–240 VAC, 50/60 Hz, typical energy efficiency 89–91%
• DC PSU input range: -40 to -72 VDC negative telecom DC power supply
• Typical full-system power consumption: 210W peak with all 32 QSFP+ ports fully populated
• Hot-swappable OIR replacement capability; no full switch reboot required during live PSU hardware swap
• MTBF: 291,523 hours under nominal operating conditions

5. NX-OS Software Feature Set (Centrally Managed via CLI / Cisco DCNM Graphical Platform)

Layer 2 Core Data Center Fabric Features

• IEEE 802.1Q trunking, PVLAN private VLAN isolation (max 4096 VLANs), transparent VTP mode
• RSTP/MSTP spanning tree suite with BPDU guard, root guard and aggressive UDLD link monitoring
• Static & dynamic LACP EtherChannels, vPC dual-active high availability to eliminate STP blocking links and maximize uplink bandwidth utilization
• DHCP snooping, dynamic ARP inspection, port security MAC address locking, broadcast/multicast storm control
• DCB PFC/ETS lossless Ethernet for Fibre Channel over Ethernet unified storage convergence
• IEEE 1588 PTP precision time synchronization optimized for low-latency high-frequency trading environments

Layer 3 Routing & Virtualization Features (Requires Optional N3K-BAS1K9 Base License)

• Unicast routing protocols: Static routes, OSPFv2, EIGRP, RIPv2, BGP-4, 32-way ECMP multi-path load balancing
• Multicast routing suite: IGMPv2/v3, PIM-SM, MSDP for video streaming and inter-rack storage replication workloads
• First-hop redundancy protocols: HSRP, VRRP for gateway failover redundancy
• Hardware-accelerated IP ACLs, route redistribution, prefix lists and route-map traffic segmentation policies
• Maximum routing table capacity: 16,000 IPv4 prefix entries, 8,000 multicast routes
• Optimized software VXLAN bridging and BGP EVPN control plane for multi-tenant virtual machine mobility (enhanced X-series ASIC buffer reduces tunnel packet loss)

Security, Monitoring & DevOps Automation Tools

• AAA authentication stack (TACACS+/RADIUS/Local user database), SSHv2 encrypted out-of-band management sessions
• SNMP v1/v2c/v3 remote monitoring, centralized syslog logging, RMON traffic statistics collection
• Cisco DCNM single-pane graphical fabric monitoring, automated provisioning and REST API integration for data center automation
• NX-API REST/CLI APIs, Python scripting, Embedded Event Manager (EEM) for custom automation workflows
• Native integration with Puppet, Chef, Ansible DevOps toolchains for infrastructure-as-code deployments
• GOLD Generic Online Diagnostics for continuous non-disruptive hardware health validation
• Unified bulk fleet-wide firmware upgrade via single parent switch CLI command for uniform fabric fleets
• Real-time streaming telemetry with expanded buffer/latency counters unique to X-series hardware

6. Typical Deployment Scenarios for N3K-C3132Q-40GX Bare Chassis

1. Low-latency financial co-location trading leaf switch: Enhanced X-series deep buffer eliminates packet loss under peak market burst traffic, stable low-jitter microsecond latency minimizes trading transaction delay, all-fiber QSFP+ ports connect directly to fiber-based trading hosts, dual airflow FRU options comply with standardized co-location facility cold/hot aisle rack cooling rules, redundant hot-swappable FRUs guarantee non-stop trading fabric uptime. Bare chassis design allows facility teams to select matching airflow power/fan FRUs separately for standardized spare part inventory management.
2. Mid-scale enterprise all-fiber leaf-spine data center leaf switch: 32×40G QSFP+ ports build scalable 40G leaf-spine fabric, breakout 4×10G mode reduces optical hardware costs for dense virtualization server racks connected via Nexus 2300 unified UPQ FEX devices, merging general LAN and lossless FCoE all-flash storage traffic on a single compact 1RU switch tier with balanced 2:1 oversubscription for heavy virtualization east-west workloads that require larger buffer capacity than standard-40GEmodels.
3. HPC and big-data parallel compute cluster rack aggregation: Expanded shared buffer absorbs massive bursty parallel compute and storage replication traffic, compact 1RU footprint saves valuable rack space for high-density compute farms, flexible breakout mode expands downlink port density without extra aggregation switches.
4. Small-scale unified LAN/FCoE data center edge aggregation: Interoperable with Nexus 2000 blade FEX devices for mixed blade enclosure + standalone fiber server rack consolidation, supporting lossless FCoE storage transport over fiber cabling to eliminate separate dedicated SAN access switches for mid-sized storage deployments with high traffic burst volume.
5. Standardized mass enterprise data center uniform fabric rollout: Bare chassis SKU separates chassis and cooling/power spare part inventory, eliminating thermal fault incidents caused by mismatched airflow power/fan modules during on-site hardware replacement for large facility deployments, dual airflow FRU compatibility supports flexible cold/hot aisle rack cooling design planning.

7. Standard Package Contents of N3K-C3132Q-40GX Bare Chassis SKU

Separately Mandatory Components (Not Included in Base Chassis Bundle)

1. One or two hot-swappable AC/DC power supplies (port-side intake PI or port-side exhaust PE airflow variant selected to match fan trays; dual PSUs recommended for 1+1 power redundancy)
2. One matching airflow hot-swappable fan tray (required for full system cooling; mismatched airflow fan modules trigger thermal protection shutdown)
3. QSFP+ transceivers for all 32 fabric ports: 40G SR4/LR4/ER4/BiDi optics, QSFP-to-4×SFP+ breakout splitter modules, Twinax/AOC fiber cables
4. SFP+ transceivers for four multiplexed auxiliary ports: 1G/10G SR/LR/ER optical transceivers, Twinax/AOC DAC fiber cables

• Optional feature software licenses: N3K-BAS1K9 base license required to unlock full Layer 3 routing functionality; Layer 2 switching features enabled by default without license activation
• Auxiliary accessories: RJ45 serial console rollover cable, out-of-band management Ethernet patch cords, lockable front door, air filter panel

Short Commercial Catalog Summary for Quotation