• Cisco N3K-C31108TC-V 48-port 10G Ethernet switch with QSFP28 uplinks
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Cisco

Cisco N3K-C31108TC-V | Nexus 3100-V 48-Port 10GBASE-T Switch, 6x 100G QSFP28

N3K-C31108TC-V

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Description

The Cisco Nexus 31108TC-V is a high-density data center switch designed for organisations migrating from 1 Gbps to 10 Gbps copper infrastructure. With 48 ports of multi-rate 10GBASE-T and 6 flexible QSFP28 uplinks supporting 10G, 40G, or 100G, it delivers 2.16 Tbps switching capacity and sub-microsecond latency. Running NX-OS, it supports advanced Layer 3 routing, VXLAN/EVPN overlay networks, and virtualisation-ready features such as vPC and 64-way ECMP.

Features

Cisco NX-OS operating system with advanced data centre features
- Layer 3 routing: OSPF, BGP, EIGRP, IS-IS, PIM, MSDP
- VXLAN with EVPN control plane for network virtualisation
- Virtual Port Channel (vPC) for Layer 2 multipathing and redundancy
- 64-way Equal-Cost Multipath (ECMP) routing
- Spanning Tree Protocol: RSTP (512 instances), MSTP (64 instances)
- In-Service Software Upgrade (ISSU) and Fast Reboot
- Power-on Auto Provisioning (POAP) for zero-touch deployment
- Cisco Nexus Data Broker support for network TAP/SPAN aggregation
- Hot-swappable fans and power supplies
- Front-to-back or back-to-front airflow configurations
- Comprehensive QoS and traffic management
- IPv4 and IPv6 dual-stack support
- SNMP, NetFlow, sFlow, and Python scripting (NX-API)

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 10GBASE-T RJ-45 ports (auto-negotiating 100M/1G/10G)
- 6x QSFP28 ports (100G native, 40G, or 4x10G breakout mode)
- Switching capacity: 2.16 Tbps
- Forwarding rate: 1.2 billion packets per second (bpps)
- Latency: 650 nanoseconds
- MAC address table: 288,000 entries
- VLAN support: 4,096 VLANs
- Routing table: 16,000 prefixes and 16,000 host routes
- ACL entries: 16,000 ingress, 1,000 egress
- Jumbo frame support: up to 9,216 bytes MTU
- Redundant fans: 3+1
- Redundant power supplies: 2x hot-swappable PSUs
- Form factor: 1RU fixed configuration
- Airflow options: port-side intake or port-side exhaust
- Management: console, USB, NX-OS CLI, POAP

FAQs

Q: What speeds do the 48 copper ports support?
A: The 48 RJ-45 ports auto-negotiate at 100 Mbps, 1 Gbps, and 10 Gbps, allowing flexible deployment with existing multi-speed servers and copper cabling.

Q: Can the QSFP28 ports operate at different speeds?
A: Yes, each of the 6 QSFP28 ports can operate in 100G native mode, 40G mode, or as 4x10G breakout, providing flexible uplink and spine connectivity options.

Q: Does this switch support VXLAN and EVPN?
A: Yes, the N3K-C31108TC-V is part of the Nexus 3100-V series and supports VXLAN overlay networking and EVPN control plane for modern data centre fabrics.

Q: What redundancy features are included?
A: The switch includes 3+1 redundant hot-swappable fans and 2 redundant hot-swappable power supplies, ensuring high availability in mission-critical environments.

Q: Is this model still actively sold by Cisco?
A: The Cisco Nexus 31108TC-V reached end-of-sale in October 2021. It remains supported under active service contracts, but new purchases should consider current-generation Nexus platforms.

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