Arista 7100 Series Switches (Used & Refurbished)
The Arista 7100 Series delivers ultra-low latency 1/10GbE switching in compact ...
Arista 7100 Series Switches (Used & Refurbished)
The Arista 7100 Series delivers ultra-low latency 1/10GbE switching in compact 1RU data center platforms. BrightStar Systems supplies fully tested, used and refurbished 7100 switches backed by our 1-Year In-House Warranty, helping you upgrade to dense 10GbE top-of-rack and aggregation switching at a fraction of new hardware cost.
With options for SFP+ 10GbE access (7100S family) and 1/10GBASE-T copper with SFP+ uplinks (7100T family), the 7100 line is ideal for latency-sensitive trading, HPC, and storage workloads where deterministic 10GbE performance matters more than newer 25/100GbE speeds.
Arista 7100 Series Overview
The 7100 Series is a family of high-performance, very low latency Layer 2/Layer 3/Layer 4 Ethernet switches. Offered in 24- and 48-port 10GbE models in a 1RU chassis, Arista 7100 switches are designed for rack-top server aggregation with cut-through forwarding, redundant power supplies, and hot-swappable fans.
Key features of the Arista 7100 Series include:
24 or 48 1/10GbE ports in a compact 1RU form factor (model-dependent)
Choices of SFP+ 10GbE (7100S) or 1/10GBASE-T copper with SFP+ uplinks (7100T)
Very low latency cut-through switching for latency-sensitive applications
Redundant, hot-swappable power supplies and fan modules
Front-to-rear or reversible airflow options for efficient data center cooling
If you need higher-density leaf/spine fabrics with 25/40/100GbE, consider using Arista 7100 switches at the latency-critical edge alongside newer 7050X Series or 7060X Series platforms in the same network.
Explore More Arista Switches
Arista 7100 switches are part of the broader Arista 7000 portfolio. Many networks use the 7100 line at the top-of-rack while relying on other Arista series for spine, core, or border roles.
All Arista 7000 Series Switches
Arista 7050 Series – General-purpose 10/40GbE ToR and aggregation
Arista 7050X Series – 10/25/40/100GbE leaf platforms
Arista 7060X Series – High-density 25/100GbE leaf-spine
Arista 7280 Series – Deep-buffered data center and routing switches
All Arista Network Hardware
Related Arista Switch Series
Customers often evaluate the 7100 Series alongside other Arista families when balancing latency, density, and port speeds.
Arista 7050 Series – 10/40GbE data center access and aggregation
Arista 7050X Series – Newer 10/25/40/100GbE leaf platforms
Arista 7060X Series – High-density 25/100GbE for cloud fabrics
Arista 7280 Series – Deep-buffer switches for storage and routing roles
Comparing Arista 7100 to Juniper EX & QFX Series Switches
Some environments standardize entirely on Arista, while others compare Arista 7100 to Juniper EX and QFX platforms for latency-sensitive 10GbE access. BrightStar Systems supplies both Arista and Juniper hardware and can help you evaluate which platform best fits your design.
Juniper EX4300 Series – Campus and access switching with 10GbE uplinks
Juniper EX4400 Series – Next-generation campus EVPN-VXLAN access
Juniper QFX5100 Series – 10GbE data center top-of-rack
Juniper QFX5120 Series – 25GbE leaf with 100GbE uplinks
Juniper QFX5200 Series – High-density 25/100GbE switching
Our engineers can walk through Arista EOS versus Junos OS, optics compatibility, and lifecycle costs to help you decide between Arista 7100 and comparable Juniper platforms.
Popular Arista 7100 Models
Below are some of the most frequently requested Arista 7100 switches from BrightStar Systems. All units are fully tested and backed by our in-house warranty.
DCS-7124S – 24× 1/10GbE SFP+ ports in 1RU, ultra-low latency cut-through switching for compact 10GbE racks.
DCS-7148S – 48× 1/10GbE SFP+ ports in 1RU, ideal for dense 10GbE top-of-rack server aggregation.
DCS-7148SX – 48× 1/10GbE SFP+ ports with enhanced hardware resources and ultra-low latency performance.
DCS-7124SX – 24× 1/10GbE SFP+ ports with improved latency and feature support versus earlier 7124S models.
DCS-7120T-4S – 20× 1/10GBASE-T copper ports with 4× SFP+ uplinks, ideal for mixed copper and fiber server access.
Arista 7100 Technical Specs & Architecture
The 7100 Series is built for low-latency 10GbE data center environments, combining dense port counts with a cut-through forwarding architecture and a feature-rich operating system.
Switching capacity: up to multi-hundred Gbps or multi-terabit throughput depending on model
Form factor: 1RU fixed-configuration switches with 24 or 48 10GbE ports
Latency: typically sub-microsecond forwarding with cut-through switching
Features: Layer 2/Layer 3/Layer 4 switching, QoS, ACLs, multicast, automation via EOS
Cooling: front-to-rear or reversible airflow options for flexible rack design
Management: Arista EOS, out-of-band management, console, and support for automation tools
Arista 7100 Model Families
7100S – SFP+ 10GbE Models
24- or 48-port 1/10GbE SFP+ switches in 1RU
Designed for low-latency 10GbE server and storage access
Ideal for environments standardizing on fiber or DAC at the server edge
7100T – 1/10GBASE-T Models
1/10GBASE-T copper access ports with standard RJ45 connectors
SFP+ uplinks for 10GbE aggregation or core connectivity
Well-suited for data centers that prefer copper cabling but still need low-latency 10GbE
Compatible Optics & Uplink Modules
Arista 7100 switches support a range of optics and cables for flexible connectivity. BrightStar Systems can bundle optics and accessories with your 7100 order so you receive a complete, ready-to-deploy solution.
Arista SFP/SFP+ Transceivers & Cables
10GbE SFP+ optics for server, storage, or aggregation links
DAC and AOC cables for low-latency, short-reach connections
Replacement power supplies, fan modules, and rack-mount kits
Common Arista 7100 Use Cases
Low-latency top-of-rack (ToR) for financial trading or high-performance computing
10GbE server access with SFP+ or 1/10GBASE-T connectivity
Aggregation of 10GbE access switches into higher-speed cores
Lab and test environments that require predictable 10GbE latency and throughput
Storage and backup networks where consistent 10GbE performance is critical
Why Buy Used or Refurbished Arista 7100 Switches?
Buying used 7100 switches from BrightStar Systems can significantly reduce capital cost while maintaining performance and reliability suitable for production networks. Our in-house testing and warranty are designed to make pre-owned Arista hardware a practical alternative to new gear.
Substantial savings versus new Arista 7100 pricing
Shorter lead times compared to many new-hardware channels
Fully tested, cleaned, and reset to factory defaults
Backed by our 1-Year In-House Warranty
How We Test Refurbished Arista 7100 Switches
Every Arista 7100 switch we ship goes through a documented test process in our lab before it reaches your rack.
Power-on and POST verification with known-good optics and cables
Port testing under load on 10GbE ports and uplinks
Verification of management and console access
EOS load, configuration reset to factory defaults, and secure data wipe
Visual inspection, cleaning, and labeling so hardware arrives ready to install
All Arista 7100 switches are backed by our 1-Year In-House Warranty for added peace of mind.
7100 Lifecycle, Support, and Replacement Planning
The Arista 7100 Series has been widely deployed as a low-latency 10GbE platform in data centers and trading environments. Many customers keep 7100 switches in production at the edge while introducing newer Arista platforms elsewhere in the network.
Lifecycle stage: mature 10GbE platform with a significant installed base
Software support: EOS trains providing security updates and feature stability for 10GbE deployments
Refresh options: Arista 7050X or 7060X for higher density and 25/100GbE, 7280 for deeper buffers and routing
Mixed environments: common to mix 7100 with 7050, 7050X, 7060X, and 7280 in multi-tier designs
7100 Buy-Back and Trade-In Options
If you are decommissioning Arista 7100 switches, BrightStar Systems can help you recover value and simplify asset disposition.
Fast bids on surplus 7100 and related Arista hardware
Support for full rack or site decommissioning projects
Option to trade in 7100 inventory toward newer Arista or multivendor platforms
Contact our team with an inventory list to get a buy-back or trade-in quote.
Arista 7100 Expertise from Data Center-Focused Network Engineers
BrightStar Systems is more than a hardware broker. Our team works with Arista 7000 Series switches every day in real data center, trading, and enterprise environments.
Experience designing 7100 deployments in low-latency and high-throughput networks
Guidance on pairing 7100 with newer Arista platforms in leaf-spine and aggregation designs
Assistance matching optics, power supplies, and airflow SKUs to your standards
If you have questions about how an Arista 7100 will fit into your architecture, our engineers can walk through the design with you before you buy.
FAQ – Arista 7100 Series
Q: What roles are Arista 7100 switches best suited for?
Arista 7100 switches are typically deployed as low-latency top-of-rack or 10GbE access switches, connecting servers and storage into aggregation or core layers.
Q: How is the 7100 Series different from newer Arista platforms?
The 7100 family focuses on 1/10GbE with ultra-low latency and 24- or 48-port 1RU designs. Newer platforms such as 7050X and 7060X add higher densities and 25/100GbE support, but the 7100 remains attractive for latency-sensitive 10GbE workloads.
Q: Are used Arista 7100 switches suitable for production networks?
Yes. Many customers deploy used and refurbished 7100 switches in production. Our testing, cleaning, and warranty coverage are designed to make pre-owned 7100 hardware a reliable option.
Q: Do you buy used Arista 7100 hardware?
Yes. BrightStar Systems actively buys used 7100 switches and other Arista platforms. If you are decommissioning or refreshing, we can provide bids and help you recover value from surplus gear.
Q: What optics and cables are supported on 7100 ports?
7100S models support a range of SFP and SFP+ optics and DAC/AOC cables for 10GbE, while 7100T models provide 1/10GBASE-T copper access with SFP+ uplinks. Our team can help you select compatible optics for your deployment.
Q: Can I mix Arista 7100 switches with other Arista 7000 Series platforms?
Yes. It is common to deploy Arista 7100 switches alongside 7050, 7050X, 7060X, and 7280 platforms in the same EOS-based network.
Q: How quickly can you ship Arista 7100 switches?
Lead times vary by configuration and inventory, but used and refurbished 7100 switches are often available for faster shipment than new hardware. Request a quote for current availability.
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