Arista DCS-7280CR3A-72-R | 7280R3A 72-Port 100G QSFP Switch, Rear-to-Front Airflow

SKU:DCS-7280CR3A-72-R

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router with 72 QSFP100 ports and 7.2 Tbps of wire-speed performance, backed by an 8 GB deep packet buffer. It runs Arista EOS and suits leaf and spine roles in non-blocking fabrics, Internet border and peering, enterprise CDN backbones, data centre interconnect, and telco, cloud and 5G or metro-aggregation edge roles.

This SKU has rear-to-front airflow and two AC power supplies in a 1+1 redundant arrangement, with four hot-swap N+1 fans. It forwards 2.7 Bpps with latency from 3.8 us and holds 64 GB of system memory with a 120 GB SSD. All 72 ports can run at 100G, or at 40G with QSFP+. Breakout supports up to 102 ports at 50G and up to 102 ports at 25/10G. Typical power draw is 406 W with a maximum of 754 W. This is the non-encrypting model, so there is no encryption on the ports.

The QSFP100 ports accept 100G QSFP optics and DACs as well as 40G QSFP+. The switch needs EOS 4.31.2 or later and is managed through Arista CloudVision. It is a Group 4 platform for EOS feature licensing, with optional licences available separately.

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

Features

- Deep-buffer VOQ architecture that eliminates head-of-line blocking and virtually eliminates packet drops under congestion
- FlexRoute engine for Internet-scale routing tables in hardware
- L2 MLAG, L3 ECMP and EVPN-VXLAN overlay support
- PTP and SyncE precision timing with OCXO and PPS/10M/ToD inputs
- Arista EOS with a single 64-bit binary image, Stateful Fault Repair, live software patching and full Linux shell access
- Hot-swap redundant power supplies and fans
- Integrates with Arista CloudVision, eAPI, ZTP, LANZ and VMTracer

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: 72 x QSFP100
- Max 100G ports: 72
- Max 40G ports (using QSFP+): 72
- Max 50G-2 ports: 102
- Max 25/10G ports: 102
- Max total interfaces: 116
- Max 400G ports: not supported
- 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: 120 GB
- Management ports: 1 x 100/1000, 1 x RS-232 serial (RJ-45), 1 x USB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Encryption: none (non-M/K model)
- Airflow direction: rear to front
- Rack units: 2U
- Hot-swap power supplies: 2 (1+1 redundant)
- Hot-swap fans: 4 (N+1 redundant)
- Typical/max power draw: 406 W / 754 W
- Dimensions (WxHxD) including handles: 43.99 x 8.79 x 68.69 cm
- Weight: 22.41 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.2

FAQs

Q: Does this switch need a licence to run?
A: It runs Arista EOS and is a Group 4 fixed-switch platform for licensing. Optional Group 4 licences are sold separately, including LIC-FIX-4-E for Enhanced L3 features such as BGP, OSPF, ISIS, PIM and NAT. This non-M/K SKU has no encryption licence by default.

Q: What power supplies does it take?
A: It takes the PWR-1513-AC, PWR-1512-AC or PWR-1511-DC. The AC supplies run on 200-240 VAC at 50/60 Hz with an IEC 60320 C14 connector, and the DC supply takes -48 to -60 VDC. Typical draw is 406 W with a maximum of 754 W.

Q: What optics and speeds do the ports support?
A: The 72 QSFP100 ports accept 100G QSFP optics and DACs, plus 40G QSFP+ on up to 72 ports. Breakout is supported to 50G on up to 102 ports and to 25/10G on up to 102 ports. The fan tray is FAN-7012H.

Q: How does this SKU differ from the other 7280R3A models?
A: This -R SKU has rear-to-front airflow with two AC power supplies and no encryption. The family also includes a front-to-rear -F airflow SKU, and M and K variants that add encryption on all ports.

Q: Which EOS version does it need?
A: It requires EOS 4.31.2 or later and can be managed with Arista CloudVision.