• Silver-colored Arista DCS-7800R3-36P-LC rack-mounted network switches with 36 ports and ventilation slots visible
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Arista

Arista DCS-7800R3-36P-LC | 7800R3 36-Port 400GbE OSFP Line Card, Wire Speed

DCS-7800R3-36P-LC

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Description

The Arista 7800R3 36-port 400GbE line card is a modular line card for the 7800R3 series data centre switch-router chassis. It suits large-scale layer 2 and layer 3 cloud designs, overlay networks, Internet peering, secure data centre interconnect, and spine and core roles in leaf-spine architectures.

It provides 36 wire-speed 400GbE OSFP ports backed by a 24 GB packet buffer. Breakout modes support up to 144 x 100G ports, and the card also handles 50G, 25G and 10G using optics or cables. Throughput is 14.4 Tbps (28.8 Tbps full duplex) with forwarding of up to 6 Bpps. Typical power draw is 825 W, with a maximum of 1136 W, excluding optics. This SKU has no MACsec or TunnelSec encryption hardware.

The line card fits the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis and interoperates with other 7800R3 line cards. The OSFP ports accept 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, 2FR4, LR4, PLR4 and ZR, plus breakout cables to 200G, 100G, 50G and 25G. It runs Arista EOS.

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

Features

- Wire-speed 400G OSFP ports with flexible 10G, 25G, 50G and 100G modes using optics or cables
- Deep 24 GB packet buffer per line card
- Fully scheduled lossless cell-spraying fabric with per-port Virtual Output Queuing
- FlexRoute for Internet-scale routing, algorithmic ACLs and accelerated sFlow
- Inband Network Telemetry (INT) and IEEE 1588 PTP precision timing
- LANZ microburst detection, Zero Touch Provisioning and CloudVision support
- Hot-swappable design with front-to-rear airflow
- Runs Arista EOS with open programmable APIs (JSON-RPC, NETCONF)

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, wire speed
- Max 400G interfaces: 36
- Max 100G interfaces: 144 with breakout
- Max 50G / 25G / 10G interfaces: 288 each
- Max 40G interfaces (using QSFP+): 36
- Max total interfaces: 288
- Throughput: 14.4 Tbps (28.8 Tbps FDX)
- Forwarding rate: up to 6 Bpps
- Port buffer: 24 GB
- Latency: under 4 microseconds (64 bytes)
- Encryption: No (no MACsec or TunnelSec)
- Typical power: 825 W
- Maximum power: 1136 W, excluding optics
- Dimensions (W x H x D): 48.1 x 5.4 x 45.2 cm
- Weight: 10 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m
- Chassis support: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804

FAQs

Q: Which chassis does this line card fit?
A: It fits the Arista 7800R3 chassis DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804. It also interoperates with other 7800R3 series line cards.

Q: Does this line card support MACsec encryption?
A: No. This SKU has no MACsec or TunnelSec encryption hardware.

Q: Which 400G optics and cables work with the OSFP ports?
A: The OSFP ports accept 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, 2FR4, LR4, PLR4 and ZR. Breakout to 200G, 100G, 50G and 25G is supported using OSFP-to-QSFP or SFP cables.

Q: How much power does the line card draw?
A: Typical power is 825 W and the maximum is 1136 W, excluding optics. It is powered from the chassis power supplies.

Q: Does it need a separate licence?
A: It runs Arista EOS. Optional Enhanced Routing (LIC-MOD-x-E) and Virtualization (LIC-MOD-x-V) licences are sold per chassis size.

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