• Silver-colored rack-mounted arista dcs-7812r3-fm fabric module with port grid and ventilation slots for dcs-7812 chassis back view
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Arista

Arista DCS-7812R3-FM | 7800R3 Fabric Module for 7812 Chassis, Slots 1-6, 681W

DCS-7812R3-FM

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Description

The Arista 7800R3 Series fabric module is a core component of the DCS-7812 modular chassis, the 12-slot platform in the 7800R3 data centre switch router family. Six modules are required per chassis, populating fabric slots 1-6, and together they provide the cell-spraying fabric that interconnects the supervisors and line cards. It suits large-scale data centre spine and core, cloud and overlay networks, internet peering, secure data centre interconnect and carrier edge or core services.

Each module draws a typical 681 W, with a maximum of 917 W, and includes 12 user-serviceable fan modules with front-to-rear airflow. It measures 2.5 x 31.1 x 22.7 in (6.4 x 79 x 57.6 cm) and weighs 51 lbs (23.1 kg). Fabric redundancy supports graceful degradation. The DCS-7812 chassis it serves provides 2 supervisor slots, 12 line card slots and up to 345 Tbps of throughput.

This module works only with the DCS-7812 chassis. Other 7800R3 chassis use different fabric modules, such as 7804R3-FM, 7808R3-FM/FM2, 7816R3-FM and 7816LR3-FM. No licence is listed for the fabric module itself, as it is a hardware component.

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

Features

- Cell-spraying fabric for 100% efficiency with a fully scheduled lossless architecture
- Per-port Virtual Output Queuing to eliminate head-of-line blocking
- Fabric module redundancy with graceful degradation
- Hot-swappable, user-serviceable fan modules
- Front-to-rear airflow for optimised cooling
- Platform latency under 4 microseconds (64 bytes)
- Platform supports up to 14.4 Tbps per slot and 400G ZR/ZR+ line cards

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

- Fabric module: DCS-7812R3-FM
- Chassis support: DCS-7812 only
- Modules required per chassis: 6 (fabric slots 1-6)
- Typical power: 681 W
- Maximum power: 917 W
- Typical power measured at 25 C ambient with 50% load on all ports
- Redundancy: Graceful degradation supported
- User-serviceable fans: Yes (12 fan modules)
- Dimensions (H x W x D): 2.5 x 31.1 x 22.7 in (6.4 x 79 x 57.6 cm)
- Weight: 51 lbs (23.1 kg)
- Airflow: Front-to-rear
- Operating temperature (7800R3 platform): 0 to 40 C (32 to 104 F)
- Storage temperature (7800R3 platform): -40 to 70 C (-40 to 158 F)
- Relative humidity (7800R3 platform): 5 to 90%
- Operating altitude (7800R3 platform): 0 to 3,000 m (10,000 ft)
- DCS-7812 chassis slots: 2 supervisor, 12 line card, 6 fabric module
- DCS-7812 chassis throughput: 345 Tbps, 72 Bpps

FAQs

Q: How many fabric modules does the 7812 chassis need?
A: The DCS-7812 chassis requires six DCS-7812R3-FM fabric modules, one in each of fabric slots 1-6.

Q: Does this fabric module need a licence?
A: No licence is listed for the fabric module itself, as it is a hardware component. The 7800R3 platform runs Arista EOS, and feature licensing applies at the chassis, supervisor and line card level.

Q: What power does the module draw?
A: Each module draws a typical 681 W and a maximum of 917 W. The 7812 chassis is powered by up to 18 power supply slots using PWR-D1-3041-AC, PWR-D2-3041-DC or PWR-D4-3041-AC 3 kW supplies.

Q: Which chassis and supervisors does it work with?
A: It works only with the Arista DCS-7812 chassis, which uses the DCS-7816-SUP or DCS-7816-SUP1S supervisors and 7800R3 line cards.

Q: Can I use it in a 7804, 7808 or 7816 chassis?
A: No. Those chassis use different fabric modules: 7804R3-FM, 7808R3-FM/FM2, 7816R3-FM and 7816LR3-FM.

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