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DESCRIPTION
SPECIFICATIONS
INCLUDED
WARRANTY
SHIPPING
FAQS
DESCRIPTION
Arista DCS-7280CR3AK-24D12-F – 24x100GbE + 12x400GbE Switch Router, Large Routes
The DCS-7280CR3AK-24D12-F is a 1 RU fixed switch router that pairs 24 ports of 100GbE with 12 ports of 400GbE for leaf, aggregation and edge roles moving from 100G to 400G. It is part of the Arista 7280R3A Series and delivers 7.2 Tbps (14.4 Tbps full duplex) of throughput at 2.7 Bpps with front-to-rear airflow, large route scale and encryption-capable ports.
Key Specifications
Ports: 24 x 100GbE QSFP and 12 x 400GbE QSFP-DD
Maximum density: 12 x 400GbE; up to 72 x 100GbE (with breakout)
Throughput: 7.2 Tbps (14.4 Tbps full duplex) / 2.7 Bpps
Latency: from 3.8 microseconds
CPU / memory: Eight-core x86, 64 GB system memory
Storage: 480 GB SSD
Packet buffer: 8 GB
Route scale: Large route scale (7280R3AK)
Encryption: TunnelSec on all ports (hardware-capable; encryption operation requires the applicable Arista license)
Power draw: 346 W typical / 845 W maximum
Power supplies: 2 x PWR-1511 (1+1 redundant)
Cooling: 3 x FAN-7011H (N+1 redundant)
Airflow: front-to-rear (port side intake, power supply side exhaust)
Dimensions (WxHxD): 17.3 x 1.72 x 23.31 in (43.99 x 4.37 x 59.2 cm); 1 RU
Weight: 32.6 lbs (14.79 kg)
Deployment Scenarios
100G to 400G migration: 24 x 100GbE for existing links and 12 x 400GbE for new uplinks in a single rack unit
Internet edge and peering: 8 GB of packet buffer and Virtual Output Queues for transit and interconnect traffic
Leaf and aggregation: up to 72 x 100GbE with breakout for dense server or router aggregation
Choosing Among the Variants
The 7280R3A family covers 36 and 54 port 400GbE systems (7280DR3A-36, 7280DR3A-54), mixed 100G/400G systems (7280CR3A-24D12, 7280CR3A-48D6, 7280CR3A-32S), a 72-port 100GbE system (7280CR3A-72) and a 50G/200G system (7280SR3A-48YC8). In Arista model names, M adds encryption-capable ports and K adds large route scale (license-gated where encryption is involved); -F is front-to-rear airflow and -R is rear-to-front.
Frequently Asked Questions
What ports does the DCS-7280CR3AK-24D12-F have?
The DCS-7280CR3AK-24D12-F provides 24 x 100GbE QSFP and 12 x 400GbE QSFP-DD. Maximum density is 12 x 400GbE; up to 72 x 100GbE (with breakout).
What airflow direction is the DCS-7280CR3AK-24D12-F?
The -F suffix means front-to-rear airflow. The DCS-7280CR3AK-24D12-R is the same switch with rear-to-front airflow.
How much power does the DCS-7280CR3AK-24D12-F draw?
Arista lists 346 W typical / 845 W maximum, with 2 x PWR-1511 (1+1 redundant) power supplies.
Does the DCS-7280CR3AK-24D12-F support encryption?
The hardware is encryption-capable: all ports support TunnelSec. Operating encryption requires the applicable Arista license, which Arista licenses separately.
BrightStar Systems supplies professionally tested refurbished Arista 7280R3A Series hardware. Every unit is inspected, tested on original-spec firmware, factory reset, and configuration wiped before shipment, and backed by our standard warranty. Request a quote for current availability and pricing. Specifications are from the Arista 7280R3A Series data sheet (April 15, 2025, doc 04-0040-26).
SPECIFICATIONS
Model: DCS-7280CR3AK-24D12-F
Platform: Arista 7280R3A Series
Ports: 24 x 100GbE QSFP and 12 x 400GbE QSFP-DD
Throughput: 7.2 Tbps (14.4 Tbps full duplex) / 2.7 Bpps
Encryption: TunnelSec-capable (license required)
Rack units: 1 | Airflow: front-to-rear
Power: 346 W typical / 845 W maximum
INCLUDED
Model: DCS-7280CR3AK-24D12-F
Platform: Arista 7280R3A Series
Ports: 24 x 100GbE QSFP and 12 x 400GbE QSFP-DD
Throughput: 7.2 Tbps (14.4 Tbps full duplex) / 2.7 Bpps
Encryption: TunnelSec-capable (license required)
WARRANTY
5-Year BrightStar warranty for end user customers
90-Day BrightStar Warranty for resellers
SHIPPING
Free FedEx Ground shipping within the United States
FedEx Overnight shipping available as well
FedEx International Shipping available for customers outside of the United States
FAQS
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