Arista DCS-7280CR3K-36S-F | 7280R3K 36-Port 100G Switch, 2x 400G, Large Routes

SKU:DCS-7280CR3K-36S-F

Stock Status: Enquire

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Description

The Arista 7280R3K is a 1RU data centre switch router built for spine, internet peering, interconnect and Inter-DC roles. It carries 36 QSFP ports with wire-speed forwarding, deep 4GB packet buffers and the large-route scale of the 7280R3K family, so it suits networks that need big routing tables and consistent behaviour under bursty traffic.

The port layout is 28 x QSFP100, 6 x QSFP200 and 2 x QSFP-DD. That supports up to 2 x 400G, 40 x 100G, 80 x 50G, 36 x 40G, 120 x 25/10G or 24 x 1G interfaces, depending on the transceivers and cables used. Throughput is 2.4 Tbps (4.8 Tbps FDX) at 1 Bpps, with latency from 3.8 us. The large-route variant supports over 5M IPv4 routes. This SKU has front-to-rear airflow and two hot-swap 1000W AC power supplies in 1+1 redundancy, with typical draw of 254W and a maximum of 423W.

It runs Arista EOS (minimum 4.26.1) and sits in EOS Feature License Group 3, with optional LIC-FIX-3 licences for enhanced Layer 3, virtualisation and monitoring features. It can be managed with Arista CloudVision.

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

Features

- Flexible 1/10/25/40/50/100/200/400G interface support
- Deep buffers with Virtual Output Queues per port to avoid head-of-line blocking
- Large routing tables, over 5M IPv4 routes on the 7280R3K, for peering and Inter-DC
- Up to 384K MAC addresses and algorithmic ACLs for 100K+ rules
- EVPN/VXLAN and MPLS segment routing with LDP/RSVP-TE, FRR and TI-LFA
- PTP (IEEE 1588v2) precision timing
- LANZ microburst detection, Zero Touch Provisioning and Accelerated sFlow
- Open programmable APIs (JSON-RPC, NETCONF) on Arista EOS

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: 28 x QSFP100, 6 x QSFP200, 2 x QSFP-DD
- Maximum 400G ports: 2
- Maximum 100G ports: 40
- Maximum 50G ports: 80
- Maximum 40G ports (using QSFP+): 36
- Maximum 25/10G ports: 120
- Maximum 1G ports: 24
- Throughput (FDX): 2.4 (4.8) Tbps
- Packets per second: 1 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 4 GB
- CPU: Quad-Core x86
- System memory: 64 GB
- Flash storage: 8 GB
- Management: 1 x 100/1000 port, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap PWR-1011 AC, 1000W each, 1+1 redundant
- PSU input: 100-240V AC, 50/60Hz
- Fans: 2 x hot-swappable, 1+1 redundant (FAN-7011M-F)
- Airflow: front to rear
- Typical / maximum power draw: 254W / 423W
- Size (W x H x D): 43.99 x 4.37 x 47.17 cm (1RU)
- Weight: 10.47 kg
- Operating temperature: 0 to 40 C
- EOS feature licence group: Group 3 (minimum EOS 4.26.1)

FAQs

Q: Does this switch need an additional licence?
A: It runs Arista EOS with the base feature set. This SKU is in EOS Feature License Group 3, so optional LIC-FIX-3 licences are available for enhanced Layer 3, virtualisation and monitoring features. Choose the tier your design requires.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-1011 AC supplies (1000W, 100-240V AC, 50/60Hz) in 1+1 redundancy. Typical draw is 254W and maximum is 423W. DC supplies (PWR-1011-DC) are a separate part.

Q: Which optics do the QSFP-DD and QSFP200 ports take?
A: The 2 QSFP-DD ports support up to 400G optics and the 6 QSFP200 ports support up to 200G. The 28 QSFP100 ports support 100G, 50G, 40G (QSFP+) and breakout to 25G/10G.

Q: How does this SKU differ from other 7280R3 variants?
A: This is the large-route 7280R3K version with front-to-rear airflow and two AC power supplies. The 7280R3K scales to over 5M IPv4 routes, compared with over 2M on the standard 7280R3.

Q: Can it be installed with rear-to-front airflow?
A: This SKU ships with the forward-airflow FAN-7011M-F fans. Rear-to-front airflow needs FAN-7011H-R fans and EOS 4.29.1 or later.