Arista DCS-7280CR3A-32S-F | 7280R3A 30x 100G + 2x 400G QSFP-DD Switch, Front-to-Rear

SKU:DCS-7280CR3A-32S-F

Stock Status: Enquire

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Description

The Arista 7280R3A is a 1RU fixed-configuration data centre switch router built for large-scale Layer 2 and Layer 3 cloud, enterprise data centre and service provider networks. It suits leaf/spine and EVPN-VXLAN fabrics, secure Internet peering and WAN edge roles where deep buffers and large routing tables are required.

This DCS-7280CR3A-32S-F offers 30 x QSFP100/200 ports plus 2 x QSFP200/QSFP-DD ports, delivering 3.6 Tbps of throughput (7.2 Tbps full duplex) and 1.35 Bpps forwarding with latency from 3.8 us. Breakout options support up to 2 x 400G, 18 x 200G, 36 x 100G, 56 x 50G or 56 x 25/10G ports. A 4 GB packet buffer with Virtual Output Queues per port avoids head-of-line blocking. It uses front-to-rear airflow with 2 x hot-swap AC power supplies (1+1) and 3 hot-swap fans (N+1). This is the standard model with no encryption.

It runs Arista EOS from release 4.32.1 and sits in EOS Feature License Group 3. The QSFP-DD ports accept 400G optics and DACs, and the QSFP ports support 100G and 40G optics.

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

Features

- 4 GB deep packet buffer with Virtual Output Queues per port to eliminate head-of-line blocking
- FlexRoute engine for Internet-scale routing
- Accelerated sFlow for granular telemetry
- PTP and SyncE precision timing with OCXO
- Redundant hot-swap power supplies and fans, with power supplies over 94% efficient
- Arista EOS with a single 64-bit binary image, stateful fault containment and full Linux shell access
- EVPN-VXLAN, LANZ microburst detection, Zero Touch Provisioning and open APIs (JSON-RPC, NETCONF)
- CloudVision support for management and automation
- Support for 400G ZR/ZR+ optics on the QSFP-DD ports

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: 30 x QSFP100/200, 2 x QSFP200/QSFP-DD
- Maximum 400G ports: 2
- Maximum 200G ports: 18
- Maximum 100G ports: 36
- Maximum 50G ports: 56
- Maximum 25/10G ports: 56
- Throughput: 3.6 Tbps (7.2 Tbps full duplex)
- Forwarding rate: 1.35 Bpps
- Latency: from 3.8 us
- Packet buffer: 4 GB
- CPU: eight-core x86
- System memory: 64 GB
- SSD storage: 120 GB
- Management: 1 x 100/1000 port, 1 x RS-232 RJ-45 serial, 1 x USB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Power supplies: 2 x hot-swap AC (1+1 redundant), PWR-1512-AC
- Fans: 3 x hot-swap (N+1), fan tray FAN-7011H
- Airflow: front to rear
- Power draw: 302 W typical, 481 W maximum
- Form factor: 1RU
- Dimensions (W x H x D): 43.99 x 4.37 x 56.57 cm
- Weight: 12.81 kg
- Operating temperature: 0 to 40 C
- Minimum EOS release: 4.32.1
- Encryption: none (standard model)

FAQs

Q: What software and licensing does this switch use?
A: It runs Arista EOS from release 4.32.1 and sits in EOS Feature License Group 3. Group 3 licences such as Enhanced L3, Virtualization, Monitoring and Automation, and FLX are ordered separately.

Q: Does this model support encryption?
A: No. This is the standard R3A model with no encryption. TunnelSec encryption is only available on the R3AM and R3AK variants.

Q: What power supplies does it use?
A: It uses two hot-swap AC supplies in a 1+1 redundant arrangement, PWR-1512-AC (1500 W, 200-240 VAC). Typical draw is 302 W and maximum draw is 481 W, excluding optics.

Q: Which optics work in the 400G and 100G ports?
A: The QSFP-DD ports support 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR, plus 200G and breakout options. The QSFP ports support a wide range of 100G optics, AOC and CR4, as well as 40G QSFP+ optics.

Q: What is the airflow direction?
A: The -F suffix indicates front-to-rear airflow. Fan tray FAN-7011H fits this model.