Overview
The Arista 7280R3 Series of fixed systems, including the 7280R3 and the 7280R3K,
are key components of the Arista 7000 Series portfolio of data center switches. The
Arista 7280R3 Series are purpose built 25G, 100G and 400G systems built for the
highest performance environments, and to meet the needs of the largest scale data
centers and service providers They deliver scalable L2 and L3 resources and high
density with advanced features for network monitoring, precision timing and
network virtualization to deliver scalable and deterministic network performance
while simplifying designs and reducing OpEx. The 7280R3 capabilities address the
requirements for modern networking and rich multi-media content delivery
requiring a lossless forwarding solution in a compact and energy efficient form
factor.
The 7280R3 can be deployed in a wide range of open networking solutions
including large scale layer 2 and layer 3 cloud designs, overlay networks, virtualized
or traditional enterprise data center networks. Deep packet buffers and large
routing tables allow for internet peering, interconnect and Inter-DC networking. The
broad range of interfaces and density choice provides deployment flexibility
Specifications
- Port Configuration & Capacity
- 48 × 25 GbE SFP ports (supports 80 total 25 GbE via breakout)
- 8 × 100 GbE QSFP ports
- Total forwarding capacity: 2 Tbps, approximately 1 billion packets per second
- Switching & Buffer
- Wire‑speed L2/L3 forwarding on all ports
- Packet buffer: 4 GB deep buffer
- Control Plane & Software Features
- Runs Arista EOS (modular, Linux-based)
- Supports:
- VXLAN, EVPN, MLAG, Zero‑Touch Provisioning (ZTP)
- LANZ (microburst detection), DANZ mirroring, accelerated sFlow
- Carrier‑grade routing (BGP/MPLS, segment routing)
- MACsec AES‑256‑GCM, IPsec, and VXLAN‑sec encryption
- ⚙️ Scalability & Tables
- MAC addresses: ~384K
- IPv4 routes: >2 million
- IPv6 routes: proportionally similar scale
- Cooling & Power
- 1U rack-mountable chassis
- Front-to-rear airflow (connector-side intake, rear exhaust)
- Redundant, hot-swappable dual AC 1100 W power supplies
- Performance Highlights
- Switching fabric: 2 Tbps
- Throughput: ≈1 billion packets per second
- Sub‑microsecond latency
- Ultra-deep buffers for effective microburst absorption
- Environmental & Management
- Operating temperature: 0–40 °C
- Redundant hot-swap fans and PSUs
- On-board SSD for local logging, telemetry, and support services
