Arista DCS-7280CR3K-36A-FLX-R | 7280R3K 36x 100G QSFP + 2x 400G Switch, Rear-to-Front, FLX

SKU:DCS-7280CR3K-36A-FLX-R

Stock Status: Enquire

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Description

The Arista 7280R3K is a 1RU data centre and service-provider switch router built for spine and leaf fabrics, internet peering, edge routing and carrier VPN or EVPN services. This DCS-7280CR3K-36A-FLX-R runs Arista EOS and pairs deep packet buffers with the large-route FlexRoute engine for full internet routing tables in hardware.

The port layout is 28 QSFP100, 6 QSFP200 and 2 QSFP-DD ports, marketed as 36x 100GbE QSFP plus 2x 400G. With breakouts it scales to 40x 100G, 80x 50G or 120x 25/10G ports. Throughput is 2.4 Tbps (4.8 Tbps full duplex) at 1 Bpps, with latency from 3.8 us, a 4 GB packet buffer and 64 GB of system memory. This SKU is the large-routes (7280R3K) build with rear-to-front airflow, two AC power supplies and the FLX software licence, which covers full routing up to 2M routes, EVPN, VXLAN, Segment Routing and advanced MPLS.

It accepts 1G to 400G optics and DACs, including 400GBASE-SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR modules in the QSFP-DD ports, and 100G SR4, XSR4, SWDM4 and LR4 modules in the QSFP ports.

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

Features

- FlexRoute engine holds the full internet routing table in hardware, extended to over 5M routes on 7280R3K models
- Algorithmic ACLs supporting 100K+ rules
- Deep packet buffers with Virtual Output Queues per port to avoid head-of-line blocking
- Accelerated sFlow, Inband Network Telemetry and LANZ microburst detection
- EVPN/VXLAN overlays, Segment Routing, MPLS and Zero Touch Provisioning
- PTP (IEEE 1588) and SyncE timing support
- Open programmable APIs including JSON-RPC, NETCONF and OpenConfig
- Single-binary Arista EOS with Linux shell access and CloudVision management

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
- Throughput: 2.4 Tbps (4.8 Tbps full duplex)
- Packets per second: 1 Bpps
- Latency: from 3.8 us
- CPU: eight-core x86
- System memory: 64 GB
- Packet buffer memory: 4 GB
- SSD storage: 120 GB
- Management: 1 x 100/1000 port, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap 1000W (1+1 redundant)
- Fans: 2 x hot-swap (1+1 redundant)
- Airflow: rear-to-front
- Typical / maximum power draw: 262 W / 437 W
- Form factor: 1RU
- Dimensions (W x H x D): 43.99 x 4.37 x 47.17 cm
- Weight: 10.47 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Minimum EOS: 4.27.2

FAQs

Q: Does this switch include a software licence?
A: Yes. This SKU includes the FLX licence, covering full routing up to 2M routes, EVPN, VXLAN, Segment Routing and advanced MPLS. Other licences such as Enhanced L3 or Monitoring and Automation are separate.

Q: What airflow does this model use?
A: The -R suffix denotes rear-to-front airflow. Spare fans for this airflow are FAN-7011H-R, while FAN-7011M-F is the forward airflow part. Rear-to-front airflow requires EOS 4.29.1 and high-speed fans.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-1011 1000W AC power supplies in a 1+1 redundant arrangement. Typical draw is 262 W, with a maximum of 437 W.

Q: Which optics and modules does it support?
A: The two QSFP-DD ports take 400GBASE-SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR modules plus 400G DAC/AOC. The QSFP ports take 100G SR4, XSR4, SWDM4 and LR4 modules as well as 40G QSFP+.

Q: What makes the 7280R3K different from the standard 7280R3?
A: The 7280R3K models extend FlexRoute to over 5M IPv4 routes, suiting internet peering and large-scale edge routing roles.