Arista DCS-7280CR3A-48D6-F | 7280R3A 48x100G Switch, 6x 400G QSFP-DD, 2x AC

SKU:DCS-7280CR3A-48D6-F

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Description

The Arista 7280R3A is a 2RU fixed data centre and cloud-grade routing switch with 48 x 100G QSFP and 6 x 400G QSFP-DD ports. It runs Arista EOS and suits large-scale layer 2 and layer 3 leaf and spine designs, enterprise data centres, service provider networks, Internet border and peering routing, data centre interconnect and carrier edge VPN and EVPN services.

This SKU is the standard R3A model with front-to-rear airflow, two AC power supplies and no encryption. It delivers 7.2 Tbps of throughput (14.4 Tbps full duplex) and 2.7 Bpps forwarding, with latency from 3.8 us and an 8 GB deep packet buffer. A dedicated OSFP-LS port supports 400G-ZR deployment, and up to 114 x 25/10G ports are available using breakout. It is built on an eight-core x86 CPU with 64 GB of system memory and a 120 GB SSD, and supports PTP and SyncE precision timing.

The ports accept QSFP100 and QSFP28 optics, QSFP+ at 40G, and QSFP-DD for 400G. Power is supplied by two hot-swap 1+1 redundant AC supplies (PWR-1512-AC), with four hot-swap N+1 fans (FAN-7012H). The switch is in EOS feature licence Group 4 and requires EOS 4.31.1 or later.

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

Features

- Deep 8 GB packet buffer with Virtual Output Queues per port to eliminate head-of-line blocking
- 400G ZR/ZR+ support and a dedicated OSFP-LS port for dense 400G DWDM
- Synchronous Ethernet and IEEE 1588 PTP precision timing
- Arista EOS with a single 64-bit binary image, Stateful Fault Repair, live software patching and full Linux shell access
- EVPN-VXLAN, MLAG, ECMP and FlexRoute for Internet-scale routing
- Open programmable APIs (JSON-RPC, NETCONF), CloudVision, LANZ, ZTP and accelerated sFlow
- Hot-swap, colour-coded redundant power supplies and fans with Platinum-level efficiency
- Designed for NEBS environments

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

- Model: 7280CR3A-48D6
- Ports: 48 x QSFP100 and 6 x QSFP-DD
- OSFP-LS ports: 1 (for 400G-ZR deployment)
- Max 400G ports: 6
- Max 100G ports: 68
- Max 50G ports: 114
- Max 40G ports (using QSFP+): 54
- Max 25/10G ports: 114
- Max total interfaces: 116
- Throughput: 7.2 Tbps (14.4 Tbps full duplex)
- Packet forwarding rate: 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
- 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
- Power supplies: 2 x hot-swap AC, 1+1 redundant (PWR-1512-AC)
- Fans: 4 x hot-swap, N+1 redundant (FAN-7012H)
- Airflow direction: Front to rear
- Typical/max power draw: 388 W / 979 W (excluding transceivers)
- Rack units: 2U
- Dimensions (W x H x D): 43.99 x 8.79 x 68.38 cm including handles
- Weight: 22.04 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.1

FAQs

Q: Does this switch need a licence?
A: It runs Arista EOS and is in EOS feature licence Group 4, with a minimum of EOS 4.31.1. Optional Group 4 licences are available separately, such as LIC-FIX-4-E for Enhanced L3 (BGP, OSPF, ISIS, PIM, NAT) and LIC-FIX-4-FLX for FlexRoute.

Q: Does this model include MACsec or IPsec encryption?
A: No. This is the standard R3A model with no encryption. The 7280CR3AM variant adds MACsec, IPsec and VXLANsec on all ports.

Q: What power supplies does it use?
A: It uses two hot-swap 1+1 redundant AC supplies, PWR-1512-AC (1500 W, 200-240 VAC, 50/60 Hz). Typical power draw is 388 W and maximum is 979 W, excluding transceivers.

Q: Which optics and speeds do the ports support?
A: The 48 QSFP100 ports take QSFP100 and QSFP28 optics, and QSFP+ at 40G. The 6 QSFP-DD ports support 400G, and the OSFP-LS port is for 400G-ZR and DWDM line-system optics. Breakout supports up to 114 x 25/10G ports.

Q: What is the airflow direction?
A: This SKU has front-to-rear airflow. The fan tray is FAN-7012H, with four hot-swap fans in an N+1 arrangement.