Arista DCS-7280CR3A-24D12-R | 7280R3A 24x100G + 12x400G Switch, Rear-to-Front, AC

SKU:DCS-7280CR3A-24D12-R

Stock Status: Enquire

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Description

The Arista 7280R3A is a fixed 1RU data centre switch router for cloud and enterprise data centres, service provider networks, Internet peering and border roles, carrier edge, DCI and timing-sensitive 5G and metro deployments. This DCS-7280CR3A-24D12-R is the rear-to-front airflow variant with two AC power supplies, and it runs Arista EOS.

The front panel provides 24 x 100GbE QSFP100 ports and 12 x 400GbE QSFP-DD ports, delivering 7.2 Tbps (14.4 Tbps full duplex) at wire speed with a 2.7 Bpps forwarding rate and latency from 3.8 us. An 8 GB packet buffer with Virtual Output Queues suits bursty leaf-spine and spine traffic. The QSFP-DD ports support breakout to 100G, 50G, 25G and 10G, and up to 72 x 100G or 116 x 25/10G interfaces can be configured. PTP and SyncE with OCXO and PPS/10M/ToD inputs support precision timing. The platform is eight-core x86 with 64 GB memory and a 480 GB SSD.

This is the non-encryption, standard scale model in EOS Feature License Group 4, with optional add-on licences for Enhanced L3, VXLAN, FlexRoute and monitoring features. It requires EOS 4.31.1 or later and is managed with CloudVision. The 400G ports accept 400G optics including 400ZR and ZR+ modules.

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

Features

- 8 GB deep packet buffers with Virtual Output Queues per port to avoid head-of-line blocking
- FlexRoute engine for Internet-scale routing in hardware and algorithmic ACLs for 400K+ rules
- EVPN-VXLAN, MLAG and ECMP for scalable leaf-spine designs
- LANZ microburst detection, accelerated sFlow and INT telemetry
- Programmable via JSON-RPC, NETCONF and eAPI, with full Linux shell access through Arista EOS
- Hot-swap redundant 1+1 platinum-efficiency power supplies and N+1 fans, designed for NEBS
- Stateful Fault Repair and live software patching for resiliency
- Zero Touch Provisioning and CloudVision management

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: 24 x QSFP100, 12 x QSFP-DD
- Throughput: 7.2 Tbps (14.4 Tbps full duplex)
- Forwarding rate: 2.7 Bpps
- Latency: From 3.8 us
- Packet buffer: 8 GB
- Maximum 400G ports: 12
- Maximum 100G ports: 72
- Maximum 25/10G ports: 116
- CPU: Eight-core x86
- System memory: 64 GB
- SSD storage: 480 GB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management ports: 1 x 100/1000, 1 x RS-232 (RJ-45), 1 x USB
- Power supplies: 2 x PWR-1511-AC, 1+1 hot-swap
- PSU input: 200-240 VAC, 50/60 Hz, 1500 W output
- Fans: 3 x hot-swap, N+1 (FAN-7011H)
- Airflow: Rear to front
- Power draw: 346 W typical, 845 W maximum (excluding transceivers)
- Dimensions (W x H x D): 43.99 x 4.37 x 59.2 cm
- Rack units: 1RU
- Weight: 14.79 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.1

FAQs

Q: Which EOS licence group does this switch belong to?
A: It belongs to EOS Feature License Group 4 and requires EOS 4.31.1 or later. Optional add-on licences include LIC-FIX-4-E for Enhanced L3, LIC-FIX-4-V for VXLAN and LIC-FIX-4-FLX for FlexRoute.

Q: What power supplies does this model use?
A: It uses two hot-swap PWR-1511-AC supplies in 1+1 redundancy, each rated 1500 W at 200-240 VAC, 50/60 Hz, with an IEC C14 inlet. Typical draw is 346 W and maximum is 845 W, excluding transceivers.

Q: What airflow direction does the -R model have?
A: The -R model is rear to front airflow. The front to rear variant is the -F model, so match the airflow to your rack's hot and cold aisle layout.

Q: Can the 400G ports be broken out?
A: Yes. The QSFP-DD ports support breakout to 100G, 50G, 25G and 10G, and also support 400G ZR and ZR+ optics.

Q: Does this model include encryption?
A: No. This is the non-encryption model. TunnelSec is available on the 7280CR3AM and 7280CR3AK models.