• Cisco N3K-C3172PQ-FA-L3 switch with 48x10G SFP+ and 6x40G QSFP+ ports
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Cisco

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

N3K-C3172PQ-FA-L3

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Description

The Cisco Nexus 3172PQ is a high-performance data center switch designed for top-of-rack deployments requiring line-rate Layer 2 and Layer 3 switching. With 48 SFP+ ports supporting 100Mbps to 10Gbps and 6 QSFP+ ports delivering native 40Gbps or breakout 4x10Gbps, it delivers 1.4Tbps switching capacity in a compact 1RU form factor. This bundle includes LAN Enterprise and Base licenses for advanced routing protocols including BGP, OSPF, and VRFs, with port-side exhaust airflow optimized for modern data center cooling architectures.

Features

Layer 2 and Layer 3 switching with line-rate performance on all ports
- Advanced routing protocols: BGP, OSPF, EIGRP, IS-IS with LAN Enterprise license
- VRF-Lite for network segmentation and multi-tenancy
- VXLAN support for network virtualization and overlay networks
- Virtual PortChannel (vPC) for multi-chassis link aggregation
- Equal-Cost Multipath (ECMP) routing for load balancing
- Quality of Service (QoS): 8 queues per port, WRED, WRR scheduling
- Comprehensive security: MACsec, RBAC, 802.1X, DHCP snooping, dynamic ARP inspection
- Access Control Lists (ACLs): 4,000 ingress and 1,000 egress entries
- Spanning Tree Protocol: RSTP, MSTP (64 instances)
- Link Aggregation: 64 EtherChannels with up to 32 ports per channel
- Jumbo frame support: Up to 9,216-byte MTU
- Hot-swappable redundant power supplies and fan modules
- Automation and programmability: Python, NX-API, REST, Ansible, Puppet, Chef
- Low latency optimized for high-frequency trading and real-time applications
- Power over Ethernet: Not supported (PoE-free design for low power consumption)

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 10G SFP+ ports (support 100Mbps/1Gbps/10Gbps per port)
- 6x 40G QSFP+ ports (native 40Gbps or 4x10Gbps breakout mode)
- Switching capacity: 1.4 Tbps
- Forwarding rate: Up to 1 billion packets per second (bpps)
- System memory: 4GB RAM
- Flash storage: 16GB boot flash
- MAC address table: 288,000 entries
- VLAN support: 4,096 VLANs
- Routing table: 16,000 prefixes and 16,000 host entries
- ACL entries: 4,000 ingress / 1,000 egress
- Operating system: Cisco NX-OS
- Management: CLI, SNMP, NX-API, REST, Python scripting
- Power supply: Dual redundant AC PSU
- Typical power consumption: 143W
- Maximum power consumption: 293W
- Airflow: Port-side exhaust (forward airflow)
- Form factor: 1 rack unit (1RU)
- Dimensions (H x W x D): 1.73 x 17.3 x 18.82 in (4.4 x 43.9 x 47.8 cm)
- Operating temperature: 0°C to 40°C (32°F to 104°F)
- Certifications: UL 60950, CSA 60950, EN 60950, CE, FCC Part 15

FAQs

Q: What licenses are included with the N3K-C3172PQ-FA-L3 bundle?
A: This bundle includes both the LAN Base (N3K-BAS1K9) and LAN Enterprise (N3K-LAN1K9) licenses, enabling full Layer 3 routing capabilities including advanced protocols such as BGP, OSPF, EIGRP, and VRF-Lite right out of the box.

Q: What is the difference between the 3172PQ and 3172PQ-XL models?
A: The 3172PQ-XL offers enhanced memory (8GB vs 4GB) and faster CPUs (2.5GHz dual-core vs standard), enabling object-model programming and larger routing tables. The standard 3172PQ is suitable for most data center ToR deployments where these extended capabilities are not required.

Q: Can the QSFP+ ports be used for 10G connectivity?
A: Yes, each QSFP+ port can operate in native 40Gbps mode or be split into 4x10Gbps using appropriate breakout cables, providing flexible uplink and aggregation options for diverse network topologies.

Q: What airflow direction does the FA suffix indicate?
A: FA denotes forward airflow with port-side exhaust, where air enters through the fan tray and power supplies at the rear and exits through the front ports. This is designed for hot-aisle/cold-aisle data center layouts with cold air at the front of the rack.

Q: Is this switch suitable for virtualized and overlay network environments?
A: Yes, the Nexus 3172PQ supports VXLAN for network virtualization, vPC for multi-chassis link aggregation, and can operate in both standalone NX-OS mode and Nexus 9000 mode, making it well-suited for modern software-defined data center architectures.

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