• Silver-colored arista dcs-7808r3-fm rack-mounted fabric module with ports and ventilation slots for 7808 chassis back side
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Arista

Arista DCS-7808R3-FM | 7800R3 Fabric Module for 7808 Chassis, 510W

DCS-7808R3-FM

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Description

The Arista 7800R3 Fabric Module is the switch fabric card for the DCS-7808 8-slot modular chassis in the 7800R3 series. It interconnects every line card in a non-blocking fabric, which suits data centre spine, cloud provider and service provider core, and large-scale routing deployments that need high-density, deep-buffer 100G, 200G and 400G ports.

This is the first-generation 7800R3 fabric module, drawing 510 W typical and 778 W maximum from the chassis. Six modules are required per chassis, one in each of fabric slots 1-6. Traffic is distributed across the fabric modules in an end-to-end scheduled fabric, and the modules form part of the mid-plane-less chassis architecture shared across 7800R3 systems. At platform level the 7800R3 family delivers up to 230 Tbps of fabric capacity and up to 96 billion packets per second.

This module is for the DCS-7808 chassis only. DCS-7808R3-FM2 is a separate second-generation fabric module for the same chassis, so do not mix the two generations. No licence is needed for the module itself, as software features are delivered through Arista EOS on the chassis supervisor.

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

Features

- Non-blocking fabric interconnecting all line cards regardless of traffic pattern
- End-to-end scheduled fabric with traffic distributed across fabric modules
- Supports 7800R3 line cards with 100G, 200G and 400G modes
- Part of a mid-plane-less modular chassis architecture shared across 7800R3 systems
- Six modules populate fabric slots 1-6 in the DCS-7808 chassis
- No separate licence required for the module

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

- Part number: DCS-7808R3-FM
- Product type: Fabric module
- Series: Arista 7800R3 Series
- Chassis support: DCS-7808
- Fabric module slots in chassis: 6 (fabric slots 1-6), all populated with DCS-7808R3-FM
- Power draw (typical / maximum): 510 W / 778 W
- Size (H x W x D): 2.5 in x 21 in x 22.70 in
- 7808 chassis height: 16 RU (702 mm)
- 7808 chassis width: 441 mm maximum
- 7808 chassis depth: 940 mm
- 7808 chassis weight: 338.6 kg fully loaded
- Platform fabric capacity (7800R3 family): 230 Tbps (460 Tbps FDX)
- Platform forwarding (7800R3 family): up to 96 billion packets per second
- Platform per-slot capacity (7800R3 family): up to 14.4 Tbps per slot

FAQs

Q: Which chassis does the DCS-7808R3-FM fit?
A: It is for the Arista DCS-7808 8-slot chassis only. Six modules are required per chassis, one in each of fabric slots 1-6.

Q: Can I mix this with the DCS-7808R3-FM2 fabric module?
A: No. DCS-7808R3-FM2 is a separate second-generation fabric module for the same chassis, so the two should not be mixed. Confirm the fabric module generation with Arista when planning a chassis.

Q: How much power does each fabric module draw?
A: Each module draws 510 W typical and 778 W maximum from the chassis. The chassis is powered by PWR-D1-3041-AC-BLUE (AC) or PWR-D2-3041-DC-BLUE (DC) supplies.

Q: Does this fabric module need a licence?
A: No licence is needed for the fabric module itself. Software features are delivered through Arista EOS on the chassis supervisor.

Q: How many fabric modules does a DCS-7808 chassis need?
A: The DCS-7808 has six fabric module slots, and all six are populated with DCS-7808R3-FM.

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