• Cisco N3K-C3172PQ-FD-L3 silver switch with black ports and buttons
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Cisco N3K-C3172PQ-FD-L3 | Nexus 3100 48-Port 10G SFP+ Switch, 6x 40G QSFP+, Layer 3

N3K-C3172PQ-FD-L3

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Description

The Cisco Nexus 3172PQ delivers high-performance Layer 2 and Layer 3 data center switching for top-of-rack deployments. This compact 1RU switch features 48 SFP+ ports supporting 1/10GbE and 6 QSFP+ ports for 40GbE uplinks, with 1.4 Tbps switching capacity and line-rate forwarding up to 1 billion packets per second. Optimized for low latency and power efficiency, it includes forward airflow design and DC power supply, bundled with LAN Enterprise licensing for advanced routing protocols.

Features

Layer 2 Switching: VLAN, STP/RSTP/MSTP, vPC, LACP
- Layer 3 Routing: BGP, OSPF, EIGRP, RIPv2, static routing, VRF-Lite, 64-way ECMP
- Multicast: PIM-SM, SSM, MSDP, IGMP v2/v3
- Quality of Service: 8 egress queues per port, flexible packet classification, WRED, traffic shaping and policing
- Security: MACsec encryption ready, 802.1X, port security, DHCP snooping, IP Source Guard, Dynamic ARP Inspection, role-based access control
- Network Monitoring: Switched Port Analyzer (SPAN), RSPAN, ERSPAN, Ethanalyzer, NetFlow, sFlow
- High Availability: Hot-swappable redundant power supplies and fans, In-Service Software Upgrade (ISSU), Fast Reboot
- Automation and Programmability: PowerOn Auto Provisioning (POAP), Python scripting, Embedded Event Manager (EEM), REST API, NX-API
- Advanced Buffer Monitoring: Real-time per-port and per-queue buffer utilization reporting
- Data Center Features: FabricPath, VXLAN routing, OTV, LISP
- Management Protocols: SNMP v1/v2/v3, RMON, CLI, SSH, Telnet, XML API
- IPv6 Support: Full IPv6 routing and management capabilities

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

Port Configuration: 48x 10GbE SFP+ ports, 6x 40GbE QSFP+ ports
- Port Flexibility: SFP+ ports support 100Mbps/1Gbps/10Gbps; QSFP+ ports support 40Gbps or 4x10Gbps breakout
- Switching Capacity: 1.4 Tbps
- Forwarding Rate: Up to 1 billion packets per second (bpps)
- Memory: 4 GB RAM, 2 GB Flash
- MAC Address Table: 288,000 entries
- VLANs: 4,096
- Routing Table: 16,000 prefixes and 16,000 host entries
- Multicast Routes: 8,000
- ACL Entries: 4,000 ingress, 1,000 egress
- EtherChannel: 64 groups with vPC support, up to 32 ports per channel
- Jumbo Frame Support: Up to 9,216 bytes MTU
- Power Supply: DC (-40 to -72 VDC), redundant PSU support
- Airflow: Forward airflow (port-side exhaust)
- Typical Power Consumption: 143W
- Maximum Power: 293W
- Dimensions: 1.7 x 17.3 x 17 inches (1RU)
- Weight: Approximately 18 lbs
- Operating Temperature: 0 to 40°C (32 to 104°F)
- Management: Cisco NX-OS, CLI, SNMP, POAP, Python scripting, REST API
- Certifications: UL 60950, CSA 60950, EN 60950, CE, FCC Part 15, RoHS-5

FAQs

Q: What licenses are included with the N3K-C3172PQ-FD-L3 bundle?
A: This bundle includes both Base and LAN Enterprise licenses, enabling full Layer 3 routing capabilities including advanced protocols such as BGP, OSPF, EIGRP, VRFs, and multicast routing (PIM-SM, MSDP). These licenses are pre-installed for immediate deployment.

Q: Can the QSFP+ ports be used for 10GbE connectivity?
A: Yes, each of the 6 QSFP+ ports can operate in native 40 Gigabit Ethernet mode or be broken out into 4x 10 Gigabit Ethernet ports using appropriate breakout cables, providing flexible uplink and connectivity options.

Q: What is the difference between forward airflow and reverse airflow models?
A: The FD designation indicates forward airflow (port-side exhaust), where air enters through the fan tray and power supplies and exits through the ports. This is designed for hot-aisle/cold-aisle data center deployments where equipment exhausts hot air into the hot aisle.

Q: Is this switch suitable for low-latency applications?
A: Yes, the Nexus 3172PQ is a true phy-less switch optimized for ultra-low latency, making it ideal for high-frequency trading, financial applications, and other latency-sensitive workloads requiring line-rate Layer 2 and Layer 3 performance.

Q: Does this model support virtual PortChannel (vPC)?
A: Yes, the switch supports vPC technology for Layer 2 multipathing, enabling redundant links without Spanning Tree Protocol blocking, improved bandwidth utilization, and simplified network topologies with dual-homed servers.

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