N5K-C56128P Cisco Nexus 56128P 48-port 10GBE/4x40GBE port Switch
N5K-C56128P Cisco Nexus 56128P 48-port 10GBE/4x40GBE Port Switch
High-Performance 10/40GbE Data Center Switch with Low Latency and Unified Fabric Support
The Cisco Nexus 56128P Data Center Switch (N5K-C56128P) is a high-density, low-latency 10 Gigabit Ethernet switching platform designed for Top-of-Rack (ToR) and aggregation-layer deployments in enterprise and cloud data centers. Part of the Cisco Nexus 5000 Series, the 56128P delivers exceptional performance, scalability, and unified fabric capabilities to support modern virtualized and converged infrastructures.
Equipped with 48 fixed 1/10GbE SFP+ ports and 4 high-speed 40GbE QSFP+ uplinks, the Nexus 56128P provides flexible, high-bandwidth connectivity for server access and fabric aggregation. With a switching capacity of 2.56 Tbps and a forwarding rate of up to 1.44 billion packets per second, it ensures line-rate performance and predictable throughput for demanding data center workloads.
Built on Cisco NX-OS, the switch supports advanced Layer 2 and Layer 3 features, including vPC, VLANs, OSPF, BGP, VRFs, HSRP, multicast routing, and robust security services such as ACLs, CoPP, DHCP snooping, and Dynamic ARP Inspection. Support for unified fabric and Fibre Channel over Ethernet (FCoE) enables seamless LAN/SAN convergence, while VNTag and Cisco TrustSec enhance virtualization awareness and policy-based segmentation.
Designed for high availability and operational efficiency, the Cisco Nexus 56128P includes dual hot-swappable AC or DC power supplies, redundant fan trays, and selectable front-to-back or back-to-front airflow to align with modern data center cooling architectures. Integration with Cisco UCS, Cisco Nexus 2000 Fabric Extenders, Cisco ACI, Cisco DCNM, and Nexus Dashboard simplifies centralized management and automation.
With its combination of high port density, ultra-low latency, and enterprise-grade reliability, the Cisco Nexus 56128P is an ideal solution for organizations building scalable, converged, and high-performance data center networks.
Product Specifications – Cisco Nexus 56128P Data Center Switch (N5K-C56128P)
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| Category | Specification Details |
|---|---|
| Product Name | Cisco Nexus 56128P |
| Model Number | N5K-C56128P |
| Product Series | Cisco Nexus 5000 Series |
| Product Type | Data Center Top-of-Rack (ToR) / Aggregation Switch |
| Target Deployment | Enterprise & Cloud Data Centers |
| Form Factor | Fixed Configuration, Rack-Mountable |
| Rack Height | 2 Rack Units (2RU) |
| Access Ports | 48 × 1/10GbE SFP+ |
| Uplink Ports | 4 × 40GbE QSFP+ |
| Console Port | 1 × RJ45 |
| Management Ports | 1 × RJ45, 1 × SFP |
| USB Port | 1 × USB (Image & Configuration Management) |
| Switching Capacity | 2.56 Tbps |
| Forwarding Rate | Up to 1.44 Billion Packets per Second (Bpps) |
| Latency | Low-Latency Cut-Through Switching |
| MAC Address Table | 128,000 Entries |
| Packet Buffer | 25 MB Shared Buffer |
| Operating System | Cisco NX-OS |
| Layer 2 Features | VLANs, vPC, STP |
| Layer 3 Features | OSPF, BGP, VRF, HSRP, PIM |
| Multicast Support | IGMP v1/v2/v3, PIM-SM, PIM-SSM |
| FCoE Support | Supported (License & Configuration Dependent) |
| Virtualization Features | VNTag, Cisco TrustSec |
| Security Features | ACLs, CoPP, DHCP Snooping, Dynamic ARP Inspection |
| Programmability | NX-OS APIs, Automation Ready |
| Power Supplies | Dual Redundant, Hot-Swappable |
| Power Supply Type | AC or DC |
| Typical Power Consumption | ~600 W (Configuration Dependent) |
| Cooling System | Redundant Fan Trays |
| Airflow Options | Front-to-Back or Back-to-Front |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Storage Temperature | −40°C to 70°C |
| Operating Humidity | 5% to 95% (Non-Condensing) |
| Dimensions (H × W × D) | 3.5 × 17.3 × 30 in (8.9 × 43.9 × 76.2 cm) |
| Weight | Approx. 44 lbs (20 kg) |
| High Availability | Redundant Power and Cooling |
| Fabric Extender Support | Cisco Nexus 2000 Series |
| UCS Integration | Cisco UCS Compatible |
| Data Center Management | Cisco DCNM, Nexus Dashboard |
| ACI Compatibility | Cisco ACI Integration Supported |
| Mounting Accessories | Rack-Mount & Cable Management Kits |
| Use Case – ToR | High-Density 10GbE Server Connectivity |
| Use Case – Aggregation | 40GbE Uplinks for Fabric Aggregation |
| Use Case – Convergence | Unified Fabric & FCoE Deployments |
| Package Contents | Switch Chassis (Optics, Cables, Licenses Sold Separately) |
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FAQs for N5K-C56128P:
Can this switch handle both 10GbE and 40GbE traffic?
Yes, it features 48 SFP+ ports for 10GbE and 4 QSFP+ ports for 40GbE uplinks.
Is it suitable for use in high-performance data centers?
Absolutely, its high switching capacity and low latency make it ideal for demanding workloads.
Does the Nexus 56128P support unified fabric (FCoE)?
Yes, with proper licensing and configuration, it supports Fibre Channel over Ethernet.
What operating system does the switch use?
It runs Cisco NX-OS, built for resilience, scalability, and programmability in the data center.
Are power supplies and fans hot-swappable?
Yes, both are redundant and hot-swappable for high availability.
