• 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 DCS-7808R3-FM is a fabric module designed for the 7808 chassis in the 7800R3 Series. It provides high-throughput interconnectivity between line cards, enabling non-blocking performance across all chassis slots. Six fabric modules are required per 7808 chassis for full redundancy and optimal data plane operation. Ideal for high-density data center and carrier core deployments requiring scalable, low-latency switching fabrics.

Features

High-speed fabric interconnect for 7808 modular chassis
- Non-blocking crossbar architecture with virtual output queuing
- Supports up to 8 line card slots with full bandwidth
- Hot-swappable design with front-to-rear airflow
- Graceful degradation for high availability
- Managed via Arista EOS with comprehensive telemetry
- Direct line card to fabric module connectivity (midplane-less design)
- Supports 10G, 25G, 100G, 200G, and 400G line cards
- ESD protection and robust signal integrity at high data rates
- Compatible with AC and DC power configurations

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

Compatible with: Arista 7808 Chassis
- Fabric Module Slots Required: 6 per chassis (slots 1-6)
- Typical Power Consumption: 510W
- Maximum Power Consumption: 778W
- Dimensions (HxWxD): 2.5" x 21" x 22.7" (6.4 x 53.3 x 57.6 cm)
- Redundancy: Graceful degradation supported
- Hot-Swappable: Yes
- Airflow: Front-to-rear
- Management: Arista EOS (Extensible Operating System)
- Non-blocking Architecture: Full fabric bandwidth between all line cards

FAQs

Q: How many DCS-7808R3-FM modules are required for the 7808 chassis?
A: Six fabric modules are required for the 7808 chassis to achieve full fabric connectivity and redundancy across all line card slots.

Q: Is the DCS-7808R3-FM compatible with other Arista chassis models?
A: No, the DCS-7808R3-FM is specifically designed for the Arista 7808 chassis and is not compatible with other chassis models in the 7800 or 7500 series.

Q: What is the difference between DCS-7808R3-FM and DCS-7808R3-FM2?
A: The DCS-7808R3-FM2 is a newer generation fabric module with lower power consumption (370W typical vs 510W) while maintaining similar performance characteristics. Both are compatible with the 7808 chassis.

Q: Can the fabric module be hot-swapped during operation?
A: Yes, the DCS-7808R3-FM supports hot-swapping with graceful degradation, allowing replacement without shutting down the chassis, though traffic may be temporarily impacted during the swap.

Q: What line cards are supported with the DCS-7808R3-FM fabric module?
A: The fabric module supports all Arista 7800R3 and 7800R3A line cards, providing flexible combinations of port density, speed, and scale across 10G, 25G, 100G, 200G, and 400G interfaces.

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