Arista DCS-7135LB-48Y4C-F | 7135LB 48x SFP28 FPGA Switch, Front-to-Rear, 2x AC

SKU:DCS-7135LB-48Y4C-F

Stock Status: Enquire

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Description

The Arista 7135LB is a 1RU Layer 1+ FPGA switch built for exchanges, HFT and trading firms, and colocation environments that need ultra-low-latency fan-out, multiplexing, tap aggregation and timestamping. It also suits network monitoring, packet capture and regulatory compliance work such as MiFID II/RTS 25, and runs custom FPGA applications through the FPGA Development Kit.

This model provides 48 SFP28 ports and 4 QSFP28 ports, with a Layer 1 crosspoint fabric that forwards from 5 ns across lanes from 100M to 25.8 Gbps. A Xilinx UltraScale+ VU9P-3 FPGA with 4 x 8GB DDR4 handles Arista and custom applications, backed by an 8-core x86 CPU with 32 GB DRAM and a 120 GB SSD. This SKU uses front-to-rear airflow with two hot-swap 1500W AC power supplies in a 1+1 redundant arrangement and three hot-swap fans. Typical draw is 667W, with a maximum of 1000W. EOS runs under Feature License Group 3.

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

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

Features

- 5 ns Layer 1 fan-out and replication latency at 25G with less than 100 ps jitter
- Signal regeneration, media conversion, port mirroring, telemetry and dynamic patching
- Bit-for-bit forwarding of any protocol on ports from 100M to 25Gbps
- Integrated Xilinx UltraScale+ FPGA for Arista or custom applications
- Arista application support including MetaWatch, MetaMux, MultiAccess and SwitchApp
- Dual hot-swap power supplies and fans with tool-less rails
- Linux-based platform with EOS CLI, JSON RPC API, embedded InfluxDB and LLDP
- PTP, NTP and PPS time synchronisation
- SFP28 interface diagnostics for light levels, temperature and voltage

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

- Model: 7135LB-48Y4C
- Front-panel ports: 48x SFP28, 4x QSFP28
- Layer 1 throughput: 100M to 25.8 Gbps per lane
- Layer 1 latency: from 5 ns
- FPGA: 1x Xilinx UltraScale+ VU9P-3
- FPGA DRAM: 4 x 8GB DDR4
- FPGA Development Kit (FDK): Yes
- Clock: OCXO
- CPU: 8-core x86
- System DRAM / SSD: 32 GB / 120 GB
- Management ports: 1x 100/1000
- Serial ports: 1x RS-232 (RJ-45)
- USB ports: 1
- PPS input: 1 (5V TTL, 50 Ohm or Hi-Z)
- PPS output: 1 (5V TTL)
- Power supplies: 2x hot-swap 1500W AC (1+1 redundant)
- Fans: 3x hot-swap (N+1), fan tray FAN-7011H
- Airflow: front-to-rear
- Typical/max power draw: 667W/1000W
- AC input: 200-240V, 50/60Hz, IEC C13/C14
- Rack units: 1U
- Dimensions (WxHxD): 44.0 x 4.4 x 56.9 cm
- Weight: 12.2 kg
- Operating temperature: 0 to 40 C
- Relative humidity: 10% to 85% non-condensing
- Maximum altitude: 2,000 m
- EOS feature licence: Group 3

FAQs

Q: What licensing does the 7135LB use?
A: It uses EOS Feature License Group 3. Arista FPGA applications such as MetaWatch, MetaMux, MultiAccess and SwitchApp are offered separately by Arista.

Q: What power does this SKU need?
A: It has two hot-swap 1500W AC power supplies in a 1+1 redundant arrangement, each taking 200-240V AC at 50/60Hz via an IEC C13/C14 connector. Typical draw is 667W and maximum is 1000W.

Q: Which optics work in the SFP28 and QSFP28 ports?
A: SFP28 ports take SFP optics and cables at 25GE and 10GE. QSFP28 ports take QSFP optics and cables at 100GE, 4x25GE, 40GE and 4x10GE. Arista E-Series low-latency optics such as QSFP-100G-SR4-E, SFP-25G-SR-E and SFP-25G-LR-E run without FEC.

Q: How does this SKU differ from other 7135LB variants?
A: The -F suffix denotes front-to-rear airflow, and this configuration is fixed with two AC power supplies. The fan module is FAN-7011H-F.

Q: Can I run my own applications on the FPGA?
A: Yes. The Xilinx VU9P-3 FPGA is supported by the FPGA Development Kit for custom applications, alongside Arista's own FPGA applications.