• Silver rack-mounted arista dcs-7800r3a-36p-lc network switches with 400gbe ports and ventilation slots on the back side
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Arista

Arista DCS-7800R3A-36P-LC | 7800R3A 36-Port 400GbE OSFP Line Card, No TunnelSec

DCS-7800R3A-36P-LC

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Description

The Arista 7800R3A 36-port 400GbE OSFP line card is built for the 7800R3 Series modular data centre switch chassis. It suits large-scale cloud and data centre spine and leaf designs, internet peering, secure data centre interconnect, carrier edge and core, EVPN/VXLAN overlays and 400ZR DWDM transport.

Each card provides 36 OSFP ports running at 400GbE, with 14.4 Tbps of throughput (28.8 Tbps full duplex) and 16 GB of deep packet buffer. With breakout, a single card can present up to 144 x 100G or 232 x 10G/25G/50G interfaces, or 36 x 40G using QSFP+ adapters. Typical power draw is 533 W and maximum is 749 W, excluding optics. This SKU does not include TunnelSec hardware support, which is the difference from the 36PM variant.

The card fits DCS-7804, 7808, 7812, 7816 and 7816L chassis and can be mixed with other 7800R3 and 7800R3A line cards. The OSFP ports support 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, 2FR4, LR4, PLR4 and ZR optics, plus 200G and 100G breakouts. It runs standard Arista EOS with no separate licence needed to operate.

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

Features

- Part of the 7800R3 Series, which scales to 460 Tbps of system throughput
- Fully scheduled lossless cell-spraying fabric with per-port Virtual Output Queuing
- Optimised for 400ZR and ZR+ OSFP optics, up to 120 km with optical amplification
- FlexRoute for Internet-scale routing, Algorithmic ACLs and Accelerated sFlow
- Deep packet buffers and large routing tables for internet peering and secure data centre interconnect
- Interoperates with other 7800R3 and 7800R3A line cards in the same chassis
- Inband Network Telemetry, IEEE 1588 PTP, LANZ, ZTP and CloudVision support

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

- Ports: 36x OSFP, 400GbE
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Port buffer: 16 GB
- Maximum 400G interfaces: 36
- Maximum 100G interfaces: 144
- Maximum 10G, 25G and 50G interfaces: 232
- Maximum 40G interfaces (using QSFP+): 36
- Encryption: No TunnelSec on this SKU
- Typical power: 533 W (maximum 749 W) at 25C ambient, 50% load on all ports, excluding optics
- Dimensions (W x H x D): 48.1 x 5.4 x 45.2 cm (18.9 x 2.1 x 17.8 in)
- Weight: 11.5 kg (25.35 lbs)
- Chassis support: DCS-7804, DCS-7808, DCS-7812, DCS-7816, DCS-7816L
- Operating temperature: 0 to 40 C (32 to 104 F)
- Storage temperature: -40 to 70 C (-40 to 158 F)
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m (0 to 10,000 ft)
- Airflow: Front-to-rear (chassis)
- Latency: Under 4 microseconds (64 bytes, 7800R3 Series)

FAQs

Q: Does this line card need a separate licence?
A: No. The line card runs standard Arista EOS and needs no separate licence to operate. Optional chassis-level licences such as Enhanced Software and Virtualization are available. TunnelSec is a licensed feature and this SKU has no TunnelSec hardware support.

Q: Which chassis does it fit?
A: It fits the Arista DCS-7804, 7808, 7812, 7816 and 7816L chassis, and can be mixed with other 7800R3 and 7800R3A line cards in the same chassis.

Q: How much power does it draw?
A: Typical power is 533 W and maximum is 749 W, excluding optics. Power is supplied by the host chassis power supplies.

Q: Which optics and breakouts do the OSFP ports support?
A: The OSFP ports support 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, 2FR4, LR4, PLR4 and ZR. They also support 200G and 100G breakouts, 25G via OSFP-to-8xSFP cables, and 40G QSFP+ via adapters.

Q: How does it differ from the 36PM variant?
A: This SKU has no TunnelSec encryption hardware. The DCS-7800R3A-36PM and 3AK-36PM variants add TunnelSec support on all ports.

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