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Arista Networks 7120T-4S 10GBASE-T Switch

Industry's Highest Density Auto-Negotiating 10GBASE-T Switches

The Arista 7100 Series is a family of high performance, low latency, layer 2/3/4, 1/10 Gigabit Ethernet data center switches. The latest series additions, the Arista 7100T switches, include 24 and 48-port models with auto-negotiating 1/10GBASE-T ports with standard RJ-45 connectors and SFP+ uplink ports.
Availability: In stock

For details on how to purchase the Arista Networks 7120T-4S 10GBASE-T Switch, please click the button below to send us your details and brief requirements. We can then quote you accordingly.


The 7100T switches support redundant, hot-swappable power and cooling in 1RU and offer front-to-rear airflow when mounted in either direction. Positioned for data center server access, the 7100T switches offer backwards compatibility with standard Gigabit Ethernet cabling and investment protection as customers migrate from Gigabit to 10 Gigabit Ethernet.

The Arista 7100T switches support 10GBASE-T over Category 6a cabling up to 100m, but also support Category 5e* and Category 6 cabling with distances up to 55m. This allows for investment protection with existing cabling plants


• Up to 800 Gbps, 600 Mpps
• Hardware based layer 2/3/4 switching
• 1/10GBASE-T auto-negotiating

Investment Protection

• Deploy as 1000BASE-T today
• Enable 10GBASE-T when ready
• Leverage existing cabling plants

Arista Extensible Operating System

• Supports virtualized environments
• Customizable to customer needs
• Access to Linux tools

High Software Reliability

• Fine-grained software modularity
• Health monitoring and self-healing
• In-service-software upgrades (ISSU)

High Hardware Availability

• Redundant hot-swappable power
• Redundant hot-swappable fans
• Redundant management ports

Flexible Airflow/Mounting Options

• Front-to-rear or rear-to-front fan options
• Hot or cold aisle port facing options

Full Range of SFP+ Uplink Options

• 10GBASE-X optical PHYs
• 10GBASE-CR copper cables
• 1000BASE-X optical PHYs
• 1000BASE-T copper PHY

Manufacturer Arista Networks
Part No. DCS-7120T-4S-F
Width 440
Height 44
Depth 515
Weight [Kg] 11.80
Specification The Arista 7100T switches include a one-year limited hardware warranty, which covers parts repair or replacement with a ten-business-day turn-around after unit is received.
Compliant Standards • 802.1D Bridging and Spanning Tree
• 802.1p QOS/COS
• 802.3ab 1000BASE-T
• 802.3z Gigabit Ethernet
• 802.3ae 10 Gigabit Ethernet
Bandwidth 480 Gbps
Ports 20x 1/10GBASE-T (RJ-45) Ports; 4x SFP/SFP+ Uplink Ports
Port-Port Latency 2.5 usec
Compatible CPU(s) x86 Dual Core
Memory Capacity 2 GB
USB Port(s) 1
Serial Ports 1 RS-232
LAN Socket(s) 10/100/1000 Management Port
DCS-7120T-4S-F; DCS-7120T-4S-R