• Cisco N3K-C3172PQ-BD-L3 silver switch with black ports and 48x 1/10GbE SFP+
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Cisco

Cisco N3K-C3172PQ-BD-L3 | Nexus 3100 48-Port 10G SFP+ Switch, 6x 40G QSFP+, Layer 3

N3K-C3172PQ-BD-L3

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Description

The Cisco N3K-C3172PQ-BD-L3 Nexus 3172PQ is a high-performance Layer 2 and Layer 3 data center switch designed for top-of-rack deployments. It delivers 48 SFP+ ports and 6 QSFP+ uplinks with up to 1.4 Tbps switching capacity in a compact 1RU form factor. This bundle includes reversed airflow for port-side intake cooling, dual DC power supplies for redundancy, and LAN Enterprise licenses for advanced Layer 3 routing and data center features.

Features

Layer 2 and Layer 3 switching with full routing protocol support (BGP, OSPF, EIGRP, RIPv2)
- Virtual PortChannel (vPC) for Layer 2 multipathing and redundancy
- 64-way Equal-Cost Multipath (ECMP) routing for Layer 3 fat-tree designs
- Line-rate traffic throughput on all ports (Layer 2 and Layer 3)
- Low-latency, phy-less design optimized for data center applications
- Support for Precision Time Protocol (PTP/IEEE 1588) for clock synchronization
- Advanced buffer monitoring for real-time traffic analysis
- In-Service Software Upgrade (ISSU) and Fast Reboot capabilities
- MACsec encryption support for data-in-transit security
- Ethanalyzer built-in packet analyzer based on Wireshark
- Configurable MTU support up to 9,216 bytes (jumbo frames)
- 64 EtherChannels with up to 32 ports per channel
- 4,000 ingress and 1,000 egress ACL entries
- Python scripting, Puppet, Chef, and Ansible support for automation
- Cisco NX-OS operating system for mission-critical reliability

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

48x 1/10 Gigabit Ethernet SFP+ ports
- 6x 40 Gigabit Ethernet QSFP+ ports (each supports native 40G or 4x 10G breakout)
- Switching capacity: 1.4 Tbps
- Forwarding rate: 1 billion packets per second
- MAC address table: 288,000 entries
- VLAN support: 4,096 VLANs
- Routing table: 16,000 prefixes and 16,000 host entries
- Memory: 4 GB RAM, 2 GB Flash
- Power: Dual DC power supply support (-40 to -72 VDC), typical 143W, maximum 293W
- Airflow: Reversed airflow (port-side intake)
- Form factor: 1RU rack-mountable
- Operating temperature: 0 to 40°C (32 to 104°F)
- Management: CLI, SNMP, NX-OS, Python scripting, RESTful APIs
- Jumbo frame support: up to 9,216 bytes

FAQs

Q: What is the difference between reversed and forward airflow?
A: Reversed airflow (port-side intake) means air enters through the front ports and exits through the rear fan tray and power supplies. This is ideal for hot-aisle/cold-aisle data center designs where cold air is at the front of the rack.

Q: Can the QSFP+ ports operate in 10G mode?
A: Yes, each of the 6 QSFP+ ports can operate in native 40 Gbps mode or in 4x 10 Gbps breakout mode, providing flexibility for connectivity requirements.

Q: What licenses are included with this bundle?
A: This bundle includes the Base license (N3K-BAS1K9) and LAN Enterprise license (N3K-LAN1K9), which provides full Layer 3 routing capabilities including BGP, OSPF, EIGRP, and advanced data center features.

Q: Is this switch suitable for leaf-spine architectures?
A: Yes, the Nexus 3172PQ is well-suited for leaf deployments in modern leaf-spine data center architectures, offering low latency and high throughput for east-west traffic patterns.

Q: Does this model support virtual PortChannel (vPC)?
A: Yes, the switch supports vPC technology for Layer 2 multipathing, enabling redundant connections without Spanning Tree Protocol and allowing fully utilized bisectional bandwidth.

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