N3K-C31108PC-V
Nexus 31108PC-V, 48 SFP+ and 6 QSFP28 ports
The Cisco N3K-C31108PC-V is a 1RU, 48x10GbE SFP+ and 6×40/100GbE QSFP28 switch offering high-performance, low latency, and a comprehensive Layer 2 and Layer 3 feature set optimized for modern data center networks.
N3K-C31108PC-V Overview
The Cisco Nexus 31108PC-V is a high-performance 1RU fixed form factor 10GbE and 40GbE top-of-rack switch. The Cisco N3K-C31108PC-V offers 48 SFP+ ports for 1GbE and 10GbE connectivity along with 6 QSFP28 ports that support native 40GbE or 100GbE speeds or 4x10GbE breakout.
With a switching capacity of 2.16 Tbps and forwarding rate of 1.2 bpps, the Cisco N3K-C31108PC-V delivers line-rate Layer 2 and Layer 3 performance ideal for deployments in data centers, cloud environments, and enterprise campus networks. The switch runs on Cisco’s NX-OS operating system which provides robust features, automation capabilities, and network programmability.
The Cisco N3K-C31108PC-V offers deep buffers, low latency, redundant components, virtual PortChannel (vPC) support, and flexible airflow options. It can be deployed standalone or stacked with other Cisco Nexus 3100 platform switches. With its high port density, performance, flexibility, and reliability the 31108PC-V is optimized for modern network demands.
Quick Specifications
| Feature | Description |
|---|---|
| Ports | 48 SFP+, 6 QSFP28 |
| Throughput | 2.16 Tbps |
| Forwarding Rate | 1.2 bpps |
| Switching Mode | Cut-through and store-and-forward |
| Latency | ~650 ns |
| Buffer Size | 16MB |
| Form Factor | 1RU |
N3K-C31108PC-V Details and Highlights
- Wire-rate non-blocking throughput on all ports
- QSFP28 ports support 40GbE, 100GbE, or 4x10GbE
- 48 SFP+ ports with 1/10GbE connectivity
- NX-OS modular operating system
- Redundant, hot-swappable components
- 16MB deep buffer for bursty traffic
- Low latency cut-through switching
- 64-way ECMP routing
- vPC support for simplified L2 deployments
- Flexible airflow direction (port-side exhaust or intake)
- DevOps automation and programmability features
- Ideal for data center, cloud, and enterprise networks
Supported Products
| Product | Description |
|---|---|
| Transceivers | Supports wide range of 1GbE, 10GbE, 40GbE, and 100GbE optics and cables |
| Power Supplies | NXA-PAC-650W AC and NXA-PDC-930W DC PSUs |
| Network Modules | – |
Comparison to Similar Models
| Model | Ports | Throughput | Buffer | Form Factor |
|---|---|---|---|---|
| 31108PC-V | 48x10GbE SFP+, 6×40/100GbE QSFP28 | 2.16 Tbps | 16MB | 1RU |
| 3132Q-V | 32x40GbE QSFP+ | 2.56 Tbps | 16MB | 1RU |
| 9372PX | 48x25GbE, 6x100GbE | 3.6 Tbps | 18MB | 1RU |
| 9336C-FX2 | 36x100GbE QSFP28 | 6.4 Tbps | 24MB | 1RU |
Full Specifications
| Feature | Description |
|---|---|
| Ports | 48 SFP+, 6 QSFP28 |
| Switching Capacity | 2.16 Tbps |
| Forwarding Rate | 1.2 bpps |
| Throughput | Line-rate on all ports |
| Switching Mode | Store-and-forward, cut-through |
| Latency | ~650 ns |
| Buffer Size | 16MB |
| MAC Addresses | 288,000 |
| ARP Entries | 24,000 |
| VLANs | 4,094 |
| Jumbo Frames | 9,216 bytes |
| Routing Protocols | Static, RIP, OSPF, EIGRP, BGP, ISIS |
| Port Channels | 64 (with vPC) |
| ECMP Paths | 64 |
| Operating System | NX-OS |
| Management | CLI, GUI, Python, REST API |
| Diagnostics | SPAN, RSPAN, ERSPAN |
| Power Supplies | NXA-PAC-650W AC, NXA-PDC-930W DC |
| Power Consumption | 150W (typical), 360W (max) |
| Fans | 3+1 redundant hot-swappable |
| Dimensions | 1.72 x 17.3 x 22.3 in (4.4 x 43.9 x 56.6 cm) |
| Weight | 21.4 lb (9.7 kg) |
| Environment | Operating temp: 32°F to 104°F (0°C to 40°C) |
Supported Modules and Accessories
| Part Number | Description |
|---|---|
| N3K-C31108PC-V | Cisco Nexus 31108PC-V Switch |
| NXA-FAN-30CFM-F/B | Nexus Single Fan, Forward/Reverse Airflow |
| NXA-PAC-650W-PE/PI | 650W AC PS, Port Side Exhaust/Intake |
| NXA-PDC-930W-PE/PI | 930W DC PS, Port Side Exhaust/Intake |
| Transceivers | 1GbE, 10GbE, 40GbE, 100GbE SFP/SFP+/QSFP+/CFP |
| Cables | Ethernet cables for 1GbE, 10GbE, 40GbE, 100GbE |
N3K-C31108PC-V Licensing
The Cisco N3K-C31108PC-V requires the Network Essentials license to utilize Layer 3 features. Additional licenses may be required for certain advanced features.
Installation and Deployment
- Rack mountable in standard 19″ racks
- Supports forward and reverse airflow
- Quick start installation guide included
- Cisco DCNM network management system simplifies deployment
- Pre-configured versions available for rapid deployment
Compliance and Safety
- EMC: FCC Part 15 Class A, EN55022 Class A
- Safety: UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, IEC 60950-1
Warranty and Support
- 1 year limited hardware warranty
- Software support through Cisco SMARTnet – expiry tied to NX-OS version
- 24×7 access to Cisco Technical Assistance Center (TAC)
N3K-C31108PC-V End of Life Policy
- EOL policy governed by NX-OS software release lifecycle
- Typical Lifecycle Support lasts for a minimum of 5 years from last date of shipment
- More details at Cisco EOL Policy
Brand
Cisco Systems
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