Arista DCS-7280CR3K-32P4-R | 7280R3K 32x100G QSFP Switch, 4x 400G OSFP, Rear-to-Front

SKU:DCS-7280CR3K-32P4-R

Stock Status: Enquire

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Description

The Arista 7280R3K is a 1RU fixed data centre switch router built for large-scale leaf/spine and overlay networks, internet peering, inter-DC interconnect and service provider or content delivery environments. It pairs deep packet buffers with an expanded routing table, making it a fit where internet-scale routing and lossless forwarding both matter.

This SKU provides 32 x QSFP100 ports and 4 x OSFP ports, with breakout options up to 48 x 100G, 96 x 50G or 96 x 25/10G. Throughput is 4.8 Tbps (9.6 Tbps full duplex) at 2 Bpps with latency from 3.8 us, backed by 8 GB of packet buffer, 64 GB of system memory and a 120 GB SSD. The large-routes 7280R3K model supports over 5M IPv4 routes. It has two hot-swap AC power supplies in a 1+1 arrangement and three N+1 fans, with rear-to-front airflow, so it must be racked to match your cabinet airflow design.

The OSFP ports accept 400G and 200G modules as well as breakout cables to 100G, 50G and 25G, while the QSFP100 ports take 100G and 40G QSFP optics and DACs. The switch runs Arista EOS, with software features enabled through Group 3 fixed-switch licences.

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

Features

- Over 5M IPv4 routes on the 7280R3K for internet-scale routing
- FlexRoute engine for large routing tables
- Deep packet buffers for lossless forwarding
- EVPN, VXLAN, MLAG and 512-way ECMP
- Algorithmic ACLs supporting 100K+ rules
- CloudVision, LANZ microburst detection, ZTP and Accelerated sFlow
- Single-binary Arista EOS with Linux shell access and eAPI
- Flexible 100G QSFP ports supporting 25G, 50G and 100G speeds

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: 32 x QSFP100, 4 x OSFP
- Maximum 400G ports: 4
- Maximum 100G ports: 48
- Maximum 50G ports: 96
- Maximum 40G ports (using QSFP+): 36
- Maximum 25/10G ports: 96
- Throughput: 4.8 Tbps (9.6 Tbps full duplex)
- Packets per second: 2 Bpps
- Latency: from 3.8 us
- CPU: quad-core x86
- System memory: 64 GB
- Packet buffer memory: 8 GB
- SSD storage: 120 GB
- Management port: 1 x 100/1000
- Serial port: 1 x RJ-45 RS-232
- USB ports: 1
- Power supplies: 2 x hot-swap PWR-1011 AC, 1+1 redundant, 1000 W output each
- Input voltage: 100-240V AC, 50/60 Hz
- Typical/maximum power draw: 543 W / 865 W
- Fans: 3 x hot-swap, N+1 redundant (FAN-7011H)
- Airflow: rear to front
- Dimensions (W x H x D): 43.99 x 4.37 x 55.83 cm
- Weight: 12.27 kg
- Rack units: 1 RU
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.27.2

FAQs

Q: Which licences does this switch use?
A: It runs Arista EOS, with features enabled by Group 3 fixed-switch licences such as LIC-FIX-3-E for enhanced Layer 3 routing, LIC-FIX-3-V for VXLAN and LIC-FIX-3-Z for monitoring and automation. The minimum EOS release is 4.27.2.

Q: What airflow direction does the -R suffix indicate?
A: The -R suffix means rear-to-front airflow, with air drawn in at the fan and power supply side and exhausted at the port side. Rack it so this matches your cabinet airflow design. The -F variant is front to rear.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-1011 AC supplies in a 1+1 redundant arrangement, each rated at 1000 W output with a 100-240V AC input. Typical draw is 543 W and maximum draw is 865 W.

Q: What can I fit in the OSFP and QSFP100 ports?
A: The OSFP ports accept 400G and 200G modules, plus breakout cables to 100G, 50G and 25G. The QSFP100 ports take 100G and 40G QSFP optics and DACs.

Q: How does the 7280R3K differ from the standard 7280R3?
A: The 7280R3K is the large-routes model, supporting over 5M IPv4 routes, compared with over 2M IPv4 unicast routes on the wider series. This makes it better suited to internet peering and large DCI roles.