Arista DCS-7135LB-48Y4C-R | 7135LB 48-Port 25G Switch, Rear-to-Front, 2x AC PSU

SKU:DCS-7135LB-48Y4C-R

Stock Status: Enquire

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Description

The Arista 7135LB is a 1RU Layer 1+ FPGA-enabled switch built for exchanges, high-frequency trading firms and other ultra-low-latency networks. It pairs a Xilinx UltraScale+ VU9P-3 FPGA with a 25G crosspoint fabric, supporting market data fan-out and aggregation, low-latency multiplexing, packet capture and timestamping, tap aggregation and custom FPGA applications.

The front panel provides 48 SFP28 ports and 4 QSFP28 ports. Layer 1 latency starts from 5 ns, with throughput from 100M to 25.8 Gbps per lane and jitter under 100 ps. The FPGA is backed by 4 x 8GB DDR4, while the system runs on an 8-core x86 CPU with 32 GB DRAM and a 120 GB SSD. This SKU is the rear-to-front airflow model with two hot-swap 1500W AC power supplies in a 1+1 redundant arrangement and three hot-swappable fans. Typical and maximum power draw is 667W and 1000W, with typical draw depending on the FPGA application configuration. The datasheet lists EOS Feature Licenses as Group 3.

The QSFP28 ports accept QSFP optics and cables at 100GE, 4x25GE, 40GE and 4x10GE, while the SFP28 ports accept SFP optics and cables at 25GE and 10GE. Arista E-Series low-latency optics such as QSFP-100G-SR4-E, SFP-25G-SR-E and SFP-25G-LR-E are supported without FEC.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Layer 1 crosspoint fabric between the FPGA and front panel, with 25G replication in 5 ns
- Layer 1+ functions including signal regeneration, media conversion, port mirroring, telemetry and dynamic patching
- Bit-for-bit forwarding for any protocol, non-blocking, with the same latency for 1:N port mirroring
- Integrated Xilinx UltraScale+ FPGA for Arista or custom applications such as MetaWatch, MetaMux, MultiAccess and SwitchApp
- Redundant hot-swap power supplies and fans with tool-less rails
- Linux-based management with industry-standard CLI, JSON RPC API, embedded influxdb and LLDP
- Time synchronisation via PTP, NTP and PPS
- Runs Arista EOS with CloudVision integration

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

- Front-panel ports: 48x SFP28, 4x QSFP28
- Layer 1 throughput: 100M-25.8 Gbps per lane
- Layer 1 latency: from 5 ns
- FPGA: 1x Xilinx UltraScale+ VU9P-3
- FPGA DRAM: 4 x 8GB DDR4
- CPU: 8-core x86
- System DRAM / SSD: 32 GB / 120 GB
- Clock: OCXO
- RS-232 serial ports: 1 (RJ-45)
- USB ports: 1
- 100/1000 management ports: 1
- PPS input ports: 1 (5V TTL, 50 Ohm or Hi-Z)
- PPS output ports: 1 (5V TTL)
- Hot-swap power supplies: 2 x 1500W AC (1+1 redundant)
- PSU input voltage: 200-240V AC
- Hot-swappable fans: 3 (N+1 redundant)
- Airflow: rear-to-front
- Typical/max power draw: 667W/1000W
- Rack units: 1 U
- Size (WxHxD): 17.3 x 1.7 x 22.4 inches (44.0 x 4.4 x 56.9 cm)
- Weight: 26.8 lbs (12.2 kg)
- Operating temperature: 0 to 40 C (32 to 104 F)
- Relative humidity: 10% to 85% non-condensing
- Maximum altitude: 2,000 m (6,500 ft)
- Certifications: BSMI, CE, KCC, NRTL, RCM (Australia/NZ), UKCA, VCCI

FAQs

Q: Which licences apply to this switch?
A: The datasheet lists EOS Feature Licenses as Group 3. Arista FPGA applications such as MetaWatch, MetaMux, MultiAccess and SwitchApp are offered separately.

Q: What power does it use?
A: It uses two hot-swap 1500W AC power supplies in a 1+1 redundant arrangement, with 200-240V AC input. Typical and maximum draw is 667W and 1000W, with typical draw depending on the FPGA application configuration.

Q: Which optics and cables work with the ports?
A: The SFP28 ports accept SFP optics and cables at 25GE and 10GE, including SFP-10G-SR, SFP-10G-LR and SFP-10G-T plus CAB-SFP-SFP-xM copper cables. The QSFP28 ports accept QSFP optics and cables at 100GE, 4x25GE, 40GE and 4x10GE. Arista E-Series low-latency optics QSFP-100G-SR4-E, SFP-25G-SR-E and SFP-25G-LR-E are supported without FEC.

Q: How does this SKU differ from other 7135LB models?
A: DCS-7135LB-48Y4C-R is the rear-to-front airflow model with two AC power supplies. Its fan tray is the rear-to-front variant FAN-7011H-R.

Q: What is the 7135LB used for?
A: It suits exchanges and trading firms needing market data fan-out, low-latency multiplexing, packet capture and timestamping, tap aggregation and custom FPGA applications.