Arista DCS-7280CR3A-48D6-R | 7280R3A 48-Port 100G Switch, 6x 400G, Rear-to-Front

SKU:DCS-7280CR3A-48D6-R

Stock Status: Enquire

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router built for large-scale leaf/spine and layer 2/3 cloud data centres. It also suits enterprise data centres, service provider networks, internet border and peering roles, and data centre interconnect with long-haul optics. This SKU is the standard model with no encryption, rear-to-front airflow and two AC power supplies.

Port density is 48 x 100GbE QSFP100 and 6 x 400GbE QSFP-DD, plus one OSFP-LS port for 400G-ZR. Throughput is 7.2 Tbps (14.4 Tbps full duplex) with 2.7 Bpps forwarding, latency from 3.8 us and an 8 GB deep packet buffer. Power is two hot-swap AC supplies in 1+1 redundancy, with a typical draw of 388 W and a maximum of 979 W excluding transceivers. It runs Arista EOS (minimum 4.31.1) and uses the Group 4 fixed-switch licence set, with feature licences ordered separately.

It accepts 10G to 400G pluggable optics and cables in QSFP+, QSFP28, QSFP-DD and OSFP form factors, including 400GBASE-ZR and 100GBASE-CR4 DACs.

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

Features

- Ultra-deep packet buffer with virtual output queues per port to prevent head-of-line blocking
- Dedicated OSFP-LS port for dense 400G-ZR/ZR+ deployments
- Up to 384K MAC addresses and algorithmic ACLs for 400K+ rules
- PTP and SyncE precision timing with OCXO and PPS/10M/ToD inputs
- Hot-swap redundant power supplies and fans, designed for NEBS
- EOS with stateful fault repair, live software patching, and eAPI, JSON-RPC and NETCONF programmability
- CloudVision, LANZ microburst detection, ZTP, EVPN-VXLAN and accelerated sFlow 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: 48 x 100GbE QSFP100, 6 x 400GbE QSFP-DD
- OSFP-LS ports: 1 (400G-ZR)
- Max 400G ports: 6
- Max 100G ports: 68
- Max 25/10G ports: 114
- Throughput: 7.2 Tbps (14.4 Tbps full duplex)
- Packet forwarding: 2.7 Bpps
- Latency: from 3.8 us
- Packet buffer: 8 GB
- System memory: 64 GB
- CPU: Eight-core x86
- SSD storage: 120 GB
- Management: 1 x 100/1000 port, 1 x RS-232 serial (RJ-45), 1 x USB
- Encryption: None (standard model)
- Airflow: Rear to front
- Power supplies: 2 x hot-swap AC, 1+1 redundant (PWR-1512-AC, 1500 W)
- Typical/max power draw: 388 W / 979 W (excluding transceivers)
- Fans: 4 x hot-swappable FAN-7012H, N+1 redundant
- Form factor: 2U
- Dimensions (W x H x D): 43.99 x 8.79 x 68.38 cm
- Weight: 22.04 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.1

FAQs

Q: Does the 7280R3A require a licence?
A: It runs Arista EOS and uses the Group 4 fixed-switch licence set. Feature licences such as Enhanced L3, VXLAN, monitoring and automation, and MACsec are ordered separately.

Q: How is this SKU different from the encryption variants?
A: This is the standard model with no encryption on any port. The R3AM and R3AK variants add TunnelSec and are separate SKUs.

Q: What power does it use?
A: It has two hot-swap AC power supplies in 1+1 redundancy (PWR-1512-AC, 200-240 VAC). Typical draw is 388 W and maximum 979 W, excluding transceivers.

Q: Which optics and cables does it work with?
A: It supports 10G to 400G pluggable optics and cables in QSFP+, QSFP28, QSFP-DD and OSFP form factors, including 400GBASE-ZR and 100GBASE-CR4 DACs.

Q: What airflow direction does this model have?
A: This -R SKU uses rear-to-front airflow, so plan rack airflow accordingly.