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

SKU:DCS-7280CR3A-24D12-F

Stock Status: Enquire

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Description

The Arista 7280R3A is a fixed 1RU data centre switch router built for large-scale layer 2 and layer 3 cloud designs, enterprise data centres, service-provider networks, spine-leaf and high-density aggregation, and Internet border and peering routing. It runs Arista EOS and uses the FlexRoute engine for Internet-scale routing, with deep 8 GB packet buffers.

This DCS-7280CR3A-24D12-F model provides 24 x 100GbE QSFP100 ports and 12 x 400GbE QSFP-DD ports, delivering 7.2 Tbps of throughput (14.4 Tbps FDX) and 2.7 Bpps of packet forwarding with latency from 3.8 us. It is the standard variant with no encryption and uses front-to-rear airflow. Power is supplied by 2 x hot-swap AC PSUs in 1+1 redundancy, with 3 hot-swap fans in N+1 redundancy. Typical power draw is 346 W, with a maximum of 845 W excluding transceivers.

The QSFP100 ports accept 100G optics, can run at 40G with QSFP+, or break out to 4 x 25G/10G. The QSFP-DD ports run at 400G and can break out to lower speeds, subject to transceiver and cable capabilities. EOS 4.31.1 or later is required, and the switch is managed with CloudVision.

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

Features

- FlexRoute engine for Internet-scale routing
- Deep packet buffer with Virtual Output Queues to eliminate head-of-line blocking
- PTP and Synchronous Ethernet (SyncE) precision timing
- EVPN-VXLAN support for data centre overlays
- CloudVision management support
- LANZ microburst detection and Accelerated sFlow
- Zero Touch Provisioning (ZTP) and open programmable APIs (JSON-RPC, NETCONF)
- Single 64-bit EOS binary image with full Linux shell access and extensibility

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 100GbE QSFP100, 12 x 400GbE QSFP-DD
- Maximum 400G ports: 12
- Maximum 100G ports: 72
- Maximum 50G ports: 116
- Maximum 40G ports (using QSFP+): 36
- Maximum 25/10G ports: 116
- Throughput (FDX): 7.2 (14.4) Tbps
- Packet forwarding: 2.7 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 8 GB
- 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 serial (RJ-45), 1 x USB
- Encryption: None on this model
- Power supplies: 2 x hot-swap, 1+1 redundant (PWR-1511-AC)
- Fans: 3 x hot-swap, N+1 redundant (FAN-7011H)
- Airflow direction: Front to rear
- Typical / maximum power draw: 346 W / 845 W
- Form factor: 1RU
- Dimensions (W x H x D): 43.99 x 4.37 x 59.2 cm
- Weight: 14.79 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.1

FAQs

Q: Does this switch include encryption?
A: No. This standard R3A model has no encryption. MACsec encryption is a feature of the 7280R3AM and R3AK variants only.

Q: Which software and licensing does it use?
A: It runs Arista EOS, with feature licences in EOS Feature License Group 4. The minimum supported release is EOS 4.31.1.

Q: What power supplies and fan tray does it use?
A: It uses two hot-swap AC power supplies (PWR-1511-AC) in 1+1 redundancy, and the fan tray is FAN-7011H with three fans in N+1 redundancy. PWR-1511-DC supplies are also listed as compatible.

Q: Can the ports break out to lower speeds?
A: Yes. The 100G QSFP100 ports can run at 40G with QSFP+ or break out to 4 x 25G/10G, and the 400G QSFP-DD ports can break out to lower speeds, subject to transceiver and cable capabilities.

Q: How does this SKU differ from other 7280R3A models?
A: This -F SKU uses front-to-rear airflow with 2 x AC PSUs and is the standard model with no encryption and no large route table extension.