• Cisco N3K-C31108TCV-32T 32-port 10GBASE-T switch with 6x 100G QSFP28 uplinks
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Cisco

Cisco N3K-C31108TCV-32T | Nexus 3100-V 32-Port 10G Switch, 6x 100G QSFP28

N3K-C31108TCV-32T

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Description

The Cisco Nexus 31108TCV-32T is a high-performance 1RU data center switch delivering 32 ports of 10GBASE-T with multi-rate capability and 6 QSFP28 uplinks supporting 40/100 Gigabit Ethernet. Engineered for Top-of-Rack deployments, this switch provides wire-rate Layer 2 and Layer 3 switching with native VXLAN routing and BGP EVPN support, making it ideal for enterprise data centers, cloud providers, and high-performance computing environments. Running Cisco NX-OS, it combines ultra-low latency performance with advanced programmability for modern DevOps workflows.

Features

Wire-rate Layer 2 and Layer 3 switching with 2.16 Tbps capacity
- Ultra-low latency: approximately 650 nanoseconds nominal
- Native line-rate VXLAN routing and gateway functionality
- BGP EVPN control plane for scalable multi-tenancy
- Comprehensive Layer 3 routing: BGP, OSPF, EIGRP, RIPv2, PIM-SM, SSM, MSDP
- Virtual PortChannel (vPC) for dual-switch redundancy and multipathing
- 16 MB shared packet buffers for burst absorption
- 16,000 ingress ACL entries and 1,000 egress ACL entries
- Support for 288,000 MAC addresses and 4,096 VLANs
- 64 EtherChannels with 32 ports per channel
- 16,000 routing prefixes and 16,000 host entries
- Jumbo frame support up to 9,216 bytes MTU
- Precision Time Protocol (PTP) IEEE 1588 for clock synchronization
- Power-on Auto Provisioning (POAP) for zero-touch deployment
- Python scripting and Cisco EEM for automation
- Advanced buffer monitoring and Ethanalyzer built-in packet capture
- DCNM support for centralized management and provisioning
- Cisco Nexus Data Broker support for TAP and SPAN aggregation
- Forward and reverse airflow options for flexible rack design
- Hot-swappable power supplies and fans

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

32 x 10GBASE-T ports (100M/1G/10G multi-rate)
- 6 x QSFP28 ports (40G/100G or 4x10G breakout)
- Switching capacity: 2.16 Tbps
- Forwarding rate: up to 1.2 billion pps
- Latency: approximately 650 nanoseconds
- Memory: 8 GB DRAM
- Flash storage: 64 GB SSD
- Buffer: 16 MB shared packet buffer
- Form factor: 1RU fixed configuration
- Power: Dual redundant hot-swappable PSU (650W AC or 930W DC)
- Typical power: 887 BTU/hr
- Cooling: Forward or reverse airflow (port-side intake/exhaust)
- Dimensions: 1.72 x 17.3 x 22.3 in (4.4 x 43.9 x 56.6 cm)
- Weight: 22 lb (10 kg)
- Management: NX-OS CLI, DCNM, SNMP, NX-API, console, USB
- Requires N3K-LAN1K9 license for Layer 3 features
- 32-port license preinstalled; optional 16-port upgrade to 48 ports available

FAQs

Q: What is the difference between the 31108TC-V and 31108TCV-32T models?
A: The N3K-C31108TCV-32T comes with 32 active 10GBASE-T ports and 6 QSFP28 uplinks enabled via preinstalled license. The base 31108TC-V model has 48 copper ports, and the 32T variant can be upgraded to 48 ports with a 16-port license. Both share the same hardware platform and performance specifications.

Q: Do the 10GBASE-T copper ports support lower speeds?
A: Yes, all 32 10GBASE-T ports are multi-rate and can operate at 100 Mbps, 1 Gbps, or 10 Gbps speeds, making them ideal for mixed-speed server environments and migrations from 1G to 10G infrastructure.

Q: What are the QSFP28 uplink capabilities?
A: Each of the 6 QSFP28 ports can operate at 40 Gigabit Ethernet, 100 Gigabit Ethernet, or be broken out into 4 x 10 Gigabit Ethernet connections using appropriate transceivers and breakout cables.

Q: Does this switch support VXLAN and network virtualization?
A: Yes, the Nexus 31108TCV-32T offers native line-rate VXLAN routing with BGP EVPN control plane for scalable multi-tenancy, host mobility, and modern data center fabric deployments. These advanced features are fully hardware-accelerated.

Q: What redundancy options are available?
A: The switch supports dual redundant hot-swappable power supplies, N+1 redundant fans, and Virtual PortChannel (vPC) technology for Layer 2 multipathing and dual-switch redundancy. vPC eliminates Spanning Tree Protocol and provides active-active connectivity to downstream devices.

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