Arista DCS-7280CR3A-24D12-FLX-F | 7280R3A 24x 100G + 12x 400G Switch, FLX, Front-to-Rear

SKU:DCS-7280CR3A-24D12-FLX-F

Stock Status: Enquire

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Description

The Arista 7280R3A is a fixed 1RU data centre switch router built for spine, leaf, peering and carrier edge roles. It suits large-scale Layer 2 and Layer 3 cloud designs, enterprise data centres and service provider networks, including EVPN services for 5G/MEC, CIN and metro, and carrier core transport. It runs Arista EOS.

This 7280CR3A-24D12 model provides 24 x 100GbE QSFP100 ports and 12 x 400GbE QSFP-DD ports, with 7.2 Tbps throughput (14.4 Tbps full duplex), 2.7 Bpps packet forwarding and latency from 3.8 us. An 8 GB deep packet buffer and virtual output queues on every port keep forwarding lossless under bursty traffic. This SKU is the FLX licence version with front-to-rear airflow and 2 x hot-swap AC power supplies in 1+1 redundancy, plus three hot-swap N+1 fans.

The 400G QSFP-DD ports accept 400GBASE and 200G optics and cables, while the 100G QSFP ports also support 50G and 40G QSFP+ modules and breakouts. EOS 4.31.1 or later is required, and the switch is managed with Arista CloudVision.

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

Features

- Virtual Output Queues on every port to eliminate head-of-line blocking
- Deep 8 GB packet buffer for lossless forwarding under bursty traffic
- EVPN-VXLAN for data centre fabrics and DCI
- Segment routing and MPLS, with advanced MPLS LER/LSR and traffic engineering under the FLX licence
- Precision timing with IEEE 1588 PTP and SyncE
- Single 64-bit EOS binary image with stateful fault containment and live software patching
- LANZ microburst detection, Zero Touch Provisioning and accelerated sFlow
- CloudVision management support and open 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: 24 x 100GbE QSFP100 + 12 x 400GbE QSFP-DD
- Max 400G ports: 12
- Max 100G ports: 72
- Max 50G ports: 116
- Max 40G ports (using QSFP+): 36
- Max 25/10G ports: 116
- Throughput (FDX): 7.2 (14.4) Tbps
- Packets per second: 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: 1 x 100/1000 port, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap AC (1+1), PWR-1511-AC
- Fans: 3 x hot-swap (N+1), FAN-7011H
- Typical/Max power draw: 346 W / 845 W (excluding transceivers)
- Airflow: Front to Rear
- Rack units: 1 U
- Dimensions (W x H x D) incl. handles: 43.99 x 4.37 x 59.2 cm
- Weight: 14.79 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Minimum EOS: 4.31.1

FAQs

Q: Which licence does this SKU include?
A: This SKU is supplied with the FLX licence, which covers full routing, EVPN, VXLAN, segment routing and advanced MPLS. Other Group 4 licences such as MACsec are sold separately.

Q: How is this switch powered?
A: It has 2 x hot-swap AC power supplies in 1+1 redundancy (PWR-1511-AC). Typical draw is 346 W and maximum is 845 W, excluding transceivers.

Q: Which optics work in the 400G and 100G ports?
A: The 12 QSFP-DD ports take 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR optics, plus 200G modules and cables. The 24 QSFP100 ports take 100G optics and cables and also support 50G and 40G QSFP+ modules and breakouts.

Q: What airflow direction does this model use?
A: This -F SKU uses front-to-rear airflow. A rear-to-front version is available as a separate -R SKU.

Q: What EOS version does it need?
A: EOS 4.31.1 or later is required.