Arista DCS-7148SX — 48x SFP+ 10GbE 1U Low-Latency Data Center Switch (7100 Series)
Technical Identity
The Arista DCS-7148SX (7148SX) is a 1U data-center Ethernet switch from the Arista 7100 series with 48x SFP+ ports supporting 1/10GbE modules, 960 Gbps of throughput and 720 Mpps forwarding, positioned by Arista as a very low latency L2/3/4 platform. Stock label for this listing: "DCS7148SX" — the same model as DCS-7148SX. Condition: Refurbished.
Specifications
Brand: Arista Networks
Model / MPN: DCS-7148SX
Product type: Data-center Ethernet switch (fixed configuration)
Product family: Arista 7100 Series
Ports: 48x SFP+ (1/10GbE SFP and SFP+ options)
Throughput: 960 Gbps
Forwarding rate: 720 Mpps
Latency class: very low latency L2/3/4 per the Arista 7100 series datasheet (exact figure varies by variant — verify per unit)
Form factor: 1U rack-mount, redundant power and cooling
Airflow / PSU: -F or -R variant per unit label — verify before order
Operating system: Arista EOS (legacy trains only; platform end-of-life)
Condition: Refurbished
Engineering Context
The 7148SX was Arista's dense low-latency 10GbE workhorse of the 7100 generation, adopted heavily in financial trading and other latency-sensitive environments. It provides wire-speed forwarding across all 48 SFP+ ports with latency characteristics that remain consistent across packet sizes per the 7100 series datasheet, and runs Arista EOS with its Linux-based operational tooling.
Use Cases
Spare unit for legacy 7100-series deployments still in service
Lab, test-bench and training environments needing many inexpensive 10GbE ports
Basic 1/10GbE aggregation where modern EOS support is not required
Legacy low-latency environments standardized on the 7148SX platform
What This Is NOT
NOT the DCS-7148S. The 7148SX is the lower-latency variant; confirm the exact model on the unit label.
NOT a 25/40/100GbE switch. SFP+ 1/10GbE only; SFP28, QSFP+ and QSFP28 are not supported.
NOT an InfiniBand switch. Ethernet only.
NOT a currently supported Arista platform. The 7100 series is end-of-life with no current EOS train support.
NOT supplied with transceivers, cables, rail kits or other accessories unless explicitly stated.
NOT sold with any EOS software license or support entitlement. Software and support arrangements are between the buyer and Arista.
Compatibility & Hard Constraints
Optics/cabling: 10GbE SFP+ and 1GbE SFP optical or copper modules; SFP+ DAC subject to platform support — verify module compatibility for this legacy platform before deployment.
Typical peer platforms: 1/10GbE servers and switches of the same era.
Airflow: the -F / -R airflow variant must match your hot-aisle/cold-aisle design — confirm the variant on the unit label before ordering.
Software: legacy EOS images only; availability requires an Arista account/entitlement.
Pre-deployment verification: confirm airflow, PSU type, module compatibility and EOS image availability against the unit label and Arista documentation.
Frequently Asked Questions (FAQ)
Q. What is the Arista DCS-7148SX?
The DCS-7148SX is a 1U data-center Ethernet switch from the Arista 7100 series with 48x SFP+ ports supporting 1/10GbE optics, 960 Gbps of throughput and a forwarding rate of 720 Mpps, designed as a very low latency L2/3/4 platform running Arista EOS.
Q. Is DCS7148SX the same as DCS-7148SX?
Yes. DCS7148SX is a label spelling of the same model; the canonical Arista part number is DCS-7148SX.
Q. How does the DCS-7148SX differ from the DCS-7148S?
Both are 48-port SFP+ members of the 7100 series; the 7148SX is the lower-latency variant of the family. Confirm the exact model string on the unit label if the distinction matters for your deployment.
Q. Does the DCS-7148SX support 25GbE, 40GbE or QSFP ports?
No. All 48 ports are SFP+ cages for 1/10GbE SFP/SFP+ modules. SFP28 25GbE, QSFP+ 40GbE and QSFP28 100GbE are not supported.
Q. Which Arista EOS versions support the DCS-7148SX?
The 7100 series is a legacy, end-of-life product line that no longer receives EOS software support. The final supported EOS release should be verified against Arista's end-of-support notices. No software entitlement is included with this hardware.
Q. What condition is the DCS-7148SX supplied in by T.E.S IT-SOLUTIONS?
Refurbished. The unit is tested, inspected and professionally packed, shipping from EU stock with global B2B delivery. Airflow variant (-F or -R) and PSU configuration are per unit label - confirm before order.
Why T.E.S IT-SOLUTIONS
Every DCS-7148SX unit ships with: (1) power-on and functional testing, (2) configuration reset and inspection, (3) full cosmetic inspection, (4) professional packaging for freight, (5) global B2B shipping from EU stock, (6) technical consultation for data-center network design at no extra cost.
Condition: Refurbished. Tested working. Airflow/PSU variant per unit label. EU stock, global B2B shipping.