• Cisco N3K-C3172PQ-XL Nexus 3172PQ-XL switch with 48x 1/10G SFP+ ports
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Cisco

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

N3K-C3172PQ-XL

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Description

The Cisco Nexus 3172PQ-XL is a high-performance data center switch optimized for low-latency 10/40 Gigabit Ethernet deployments. Featuring 48x 10G SFP+ ports and 6x 40G QSFP+ uplinks in a compact 1RU chassis, this Layer 2/3 switch delivers 1.4 Tbps switching capacity with extended memory for larger routing tables and advanced TCAM capacity. Ideal for top-of-rack applications in cloud-scale data centers, high-frequency trading environments, and enterprise network core deployments requiring wire-rate performance and programmable automation via Cisco NX-OS.

Features

Layer 2 and Layer 3 switching with wire-rate performance on all ports
- Virtual port-channel (vPC) for Layer 2 multipathing and Spanning Tree elimination
- 64-way Equal-Cost Multipath (ECMP) routing for Layer 3 fat-tree designs
- Advanced routing protocols: BGP, OSPF, EIGRP, RIPv2, PIM-SM, MSDP
- VXLAN support for overlay networking and multi-tenancy
- MACsec encryption for wire-speed Layer 2 security
- Role-based access control (RBAC) and secure boot
- In-Service Software Upgrade (ISSU) for non-disruptive maintenance
- Precision Time Protocol (IEEE 1588) for accurate clock synchronization
- Comprehensive QoS with advanced buffer monitoring per port and queue
- Cisco Nexus Data Broker support for traffic monitoring and analysis
- Ethanalyzer built-in packet capture tool based on Wireshark
- Support for MPLS, HSRP, VRRP for redundancy and service provider features
- DCNM (Data Center Network Manager) support for centralized management
- Variable-speed fans with redundant fan trays for efficient cooling

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 (supports 100M/1G/10G)
- 6x 40G QSFP+ ports (native 40G or 4x 10G breakout mode)
- Switching capacity: 1.4 Tbps
- Forwarding rate: Up to 1 billion packets per second (bpps)
- System memory: 8GB RAM (extended memory)
- CPU: Dual-core 2.5 GHz x86 processor
- MAC address table: 288,000 entries
- Form factor: 1 rack unit (1RU)
- Power supply: Dual redundant hot-swappable AC or DC PSU
- Typical power consumption: 143W
- Management: CLI, NX-OS, SNMP, NETCONF, Python, RESTful API
- Airflow: Port-side intake or port-side exhaust (configurable)
- Console port: RS-232, USB 2.0 port, management Ethernet port
- Operating system: Cisco NX-OS
- Jumbo frames: Up to 9216 bytes MTU

FAQs

Q: What is the difference between the N3K-C3172PQ and N3K-C3172PQ-XL?
A: The XL variant includes an additional 4GB of RAM for a total of 8GB, enabling extended TCAM capacity for larger routing tables, enhanced MAC address scalability, and support for object-model programming. The XL also features upgraded 2.5 GHz CPUs compared to the standard model.

Q: Can the QSFP+ ports be used for 10G connectivity?
A: Yes, each QSFP+ port can operate in native 40 Gbps mode or be broken out into 4x 10 Gbps mode using QSFP-to-SFP+ breakout cables, providing flexibility for mixed 10G and 40G network designs.

Q: Does this switch require licensing for Layer 3 features?
A: Yes, advanced Layer 3 routing features such as OSPF, BGP, EIGRP, and multicast protocols require the N3K-LAN1K9 license. The base system includes comprehensive Layer 2 features and basic Layer 3 capabilities.

Q: Is the Nexus 3172PQ-XL suitable for spine-leaf architectures?
A: Yes, the switch is well-suited for leaf layer deployments in spine-leaf topologies, offering low-latency forwarding, 64-way ECMP support, and virtual port-channel (vPC) technology for Layer 2 multipathing and high availability.

Q: What automation and programmability features are supported?
A: The switch supports Python scripting, RESTful APIs, Cisco NX-API, NETCONF, RESTCONF, and integration with configuration management tools like Ansible, Puppet, and Chef. It also provides streaming telemetry for real-time network monitoring and analytics.

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