N9K-C9504 – 4-Slot Modular Chassis – Nexus 9500 Switch
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N9K-C9504 Description
N9K-C9504 (Cisco Nexus 9504) is a 4-slot modular data center switch chassis in the Cisco Nexus 9500 Series, delivering ultra-low latency (≤5 µs) and high-density multi-speed Ethernet (1/10/25/40/50/100/200/400G) depending on the installed line cards. Designed for deployment as a spine, core, or aggregation node, the Nexus 9504 supports Cisco ACI or NX-OS mode, enabling advanced technologies such as VXLAN EVPN, Segment Routing, and MPLS. The chassis features redundant supervisors, system controllers, power supplies, and fan trays, ensuring no single point of failure. With flexible line card options and a non-blocking switching fabric, the N9K-C9504 scales for modern multi-tenant, cloud, and enterprise data center architectures.
Product Highlights
Key Features
Modular Scalability for High-Density Networks
The 4-slot chassis supports a variety of line cards, enabling flexible port density from 1G to 400G and allowing future upgrades without replacing the core infrastructure.
Resilient, Carrier-Grade Architecture
Redundant supervisors, system controllers, power supplies, and fan trays ensure non-stop operation in mission-critical enterprise, service provider, and cloud environments.
Multi-Speed Ethernet & Flexible Fabric Design
Supports 1/10/25/40/50/100/200/400 Gigabit Ethernet based on line card capability, with centralized fabric modules delivering non-blocking throughput and ultra-low latency (≤5 μs).
ACI or NX-OS Operating Modes
ASIC-level real-time telemetry with microsecond granularity helps detect microbursts, monitor latency, and proactively troubleshoot network performance.
Advanced Network Virtualization & Segmentation
Enables VXLAN EVPN, Segment Routing, and MPLS for scalable multi-tenant designs, secure segmentation, and optimized traffic engineering.
Future-Proof Investment
With support for the latest optics standards (QSFP, QSFP-DD) and MACsec encryption on capable line cards, the N9K-C9504 is built to handle evolving bandwidth and security requirements for the next decade.
Application Scenarios
Serves as a high-performance core or spine switch interconnecting distribution layers, providing both scalability and secure interconnect for large campus or multi-site enterprise networks.
Deployed as a scalable, multi-terabit spine in leaf-spine architectures for hyperscale or regional cloud data centers, supporting rapid bandwidth expansion and multi-tenant isolation.
Functions as a carrier-grade aggregation switch in metro Ethernet or service provider environments, offering high port density, flexible speeds, and protocol support for large-scale customer services.
Nexus 9500 Chassis Comparison
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Cisco Nexus 9504 Switch |
Cisco Nexus 9508 Switch |
Cisco Nexus 9516 Switch |
|---|---|---|
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Form factor7 RU |
Form factor13 RU |
Form factor21 RU |
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Line card slots4 |
Line card slots8 |
Line card slots16 |
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Supervisor slots2 |
Supervisor slots2 |
Supervisor slots2 |
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Fabric module slots6 |
Fabric module slots6 |
Fabric module slots6 |
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ACI supportYes |
ACI supportYes |
ACI supportYes |
|
Bandwidth per slot (Tbps)3.84 |
Bandwidth per slot (Tbps)3.84 |
Bandwidth per slot (Tbps)3.84 |
|
Bandwidth per system (Tbps)15 |
Bandwidth per system (Tbps)30 |
Bandwidth per system (Tbps)60 |
|
Maximum number of 1/10G BASE-T ports192 |
Maximum number of 1/10G BASE-T ports384 |
Maximum number of 1/10G BASE-T ports768 |
|
Maximum number of 10 GE ports576 |
Maximum number of 10 GE ports1152 |
Maximum number of 10 GE ports2304 |
|
Maximum number of 40 GE ports144 |
Maximum number of 40 GE ports288 |
Maximum number of 40 GE ports576 |
|
Maximum number of 100GE ports144 |
Maximum number of 100GE ports288 |
Maximum number of 100GE ports576 |
|
Maximum number of 400GE ports64 |
Maximum number of 400GE ports128 |
Maximum number of 400GE ports256 |
|
AirflowFront to back (port side intake) |
AirflowFront to back (port side intake) |
AirflowFront to back (port side intake) |
|
Power supplies (3kW AC/DC/HVAC/HVDC)Up to 4 |
Power supplies (3kW AC/DC/HVAC/HVDC)Up to 8 |
Power supplies (3kW AC/DC/HVAC/HVDC)Up to 10 |
|
Fan trays3 |
Fan trays3 |
Fan trays3 |
Model Selection Guide – Cisco N9K-C9504
1. When to Choose N9K-C9504
- Compact Modular Spine/Core – Ideal when you need a high-performance 4-slot modular chassis for spine or core roles in data centers with limited rack space (7 RU) but still require multi-terabit throughput.
- Scalable Port Speeds – Choose it when your network must support 1/10/25/40/50/100/200/400-Gigabit Ethernet today, with the ability to upgrade line cards for future speeds without replacing the chassis.
- Redundant, Carrier-Grade Reliability – Suited for enterprise and service provider environments needing full redundancy (supervisors, system controllers, fabric modules, PSUs, fans) for non-stop operation.
- Dual Operating Modes – Works in Cisco ACI for automated policy fabrics or NX-OS mode for custom configurations, giving flexibility for both greenfield and brownfield deployments.
2. When to Consider N9K-C9508 Instead
- Higher Port Density Needs – If your current or projected port requirements exceed 4 line cards, the 8-slot N9K-C9508 offers double the expansion without increasing latency.
- Mid-Size to Large DC Growth Plans – For environments planning to scale beyond 8 Tbps core capacity in the short term.
3. When to Consider N9K-C9516 Instead
- Hyperscale or Large Multi-Tenant Environments – If you require the highest slot capacity (16 line cards) for massive spine layers or multi-fabric aggregation.
- Long-Term Investment in a Single Chassis – The N9K-C9516 can host more diverse line card combinations and deliver the highest total throughput for the largest data center cores.
4. Key Deployment Tips
- Plan fabric module and line card compatibility together; all fabric modules in the chassis must be the same model.
- For MACsec or specific overlay features (VXLAN EVPN, Segment Routing, MPLS), verify support on the selected line cards.
- Consider power supply type (AC, DC, HVDC) based on your data center’s electrical design and redundancy requirements.
- Position the N9K-C9504 in spine or core tiers where low latency and flexible future upgrades are more important than maximum slot count.
Specifications
Packaging weight and dimensions included:| Weight | 118.11 kg |
|---|---|
| Dimensions | 117 × 64 × 62 cm |
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Model | N9K-C9504 | Product Family | Cisco Nexus 9500 Series modular switches |
| Chassis Type | 4-slot modular | Rack Units | 7 RU |
| Line Card Slots | 4 | Supervisor Module Slots | 2 (redundant) |
| System Controller Slots | 2 (redundant) | Fabric Module Slots | 6 (same type) |
| Max Ethernet Speeds | 1/10/25/40/50/100/200/400G (per line card capability) | Switching Capacity | Up to multi-Tbps, non-blocking |
| Latency | ≤ 5 μs | Throughput Mode | Dependent on installed line cards |
| Dimensions (H×W×D) | 12.25 × 17.5 × 33.15 in (31.1 × 44.5 × 84.2 cm) | Weight | 84 lb (38.2 kg) |
| Power Supply Slots | 4 | Supported Power Modules | 3000W AC, 3000W DC, 3000W HVDC, 3150W HV AC/DC |
| Cooling | 3 hot-swappable fan trays | Airflow | Front-to-back |
| Operating Temperature | 0 to 40 °C | Storage Temperature | -40 to 70 °C |
| Humidity | 5–95% non-condensing | Altitude | 0–4000 m |
| MTBF | 1,038,080 hours | Compliance | RoHS-6 (with exceptions) |
| Management Ports | Dependent on supervisor module | Console Port | RJ-45 serial + USB console |
| MACsec | Supported on capable line cards | Software Options | NX-OS mode or Cisco ACI mode |
| Virtualization | VXLAN EVPN, Segment Routing, MPLS (per license) | High Availability | Redundant supervisors, controllers, PSUs, fans |
| Fabric Architecture | Centralized fabric modules for all ports | Max VLANs | 4096 |
| VRF Instances | Up to 16,000 (with appropriate license) | Optics Support | QSFP/QSFP-DD/Cisco-certified modules |
Get More Information
Need pricing, stock, or shipping details for the N9K-C9504 ? Layer23-Switch can help you check current availability, lead time, and delivery options for this. Send us the part number, quantity, and destination country via live chat or email sales@layer23-switch.com for a fast quotation.
Quality Certifications
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Questions & Answers
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Can N9K-C9504 be used for 400G designs?
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