Arista DCS-7280CR3MK-32D4S-R | 7280R3 32x 100G QSFP Switch, 4x 400G QSFP-DD, Rear-to-Front

SKU:DCS-7280CR3MK-32D4S-R

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Description

The Arista 7280R3 is a 1RU fixed data centre switch router built for leaf, spine and data centre interconnect roles. This large-route model pairs 32 x 100G QSFP ports with 4 x 400G QSFP-DD ports, and adds wire-speed TunnelSec encryption (MACsec, IPsec and VXLANsec) for secure site-to-site links, internet peering and carrier edge services.

Performance figures buyers compare: 4.8 Tbps throughput (9.6 Tbps full duplex), 2 Bpps forwarding, latency from 3.8 us and an 8 GB packet buffer. The large-route 7280R3K design supports over 5M IPv4 routes, with up to 256K MAC addresses. This SKU has rear-to-front airflow and two hot-swap AC power supplies in a 1+1 arrangement, with three hot-swap fans in N+1. It is the non-FLX base model and runs Arista EOS in Feature License Group 3.

The QSFP-DD ports take 400G optics and DACs and break out to 200G, 100G, 50G and 25G. The QSFP100 ports support 100G and 40G QSFP+ optics, with breakout to 4x10G or 4x25G. Minimum EOS release is 4.25.2F.

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

Features

- Wire-speed Layer 2 and Layer 3 forwarding with up to 4.8 Tbps performance
- 8 GB deep packet buffers with Virtual Output Queues to avoid head-of-line blocking
- Line-rate AES-256-GCM encryption with MACsec (IEEE 802.1AE), IPsec and VXLANsec
- Large-route design with over 5M IPv4 routes and up to 256K MAC addresses
- Cloud-grade routing including EVPN, LDP, RSVP-TE, SR-TE, FRR and TI-LFA
- Open programmable APIs (JSON-RPC, NETCONF) with CloudVision and LANZ support
- Redundant hot-swap power supplies and fans for continuous operation
- Algorithmic ACLs supporting up to 100K rules

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: 7280CR3MK-32D4S
- Ports: 32 x QSFP100, 4 x QSFP-DD
- 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
- Packet buffer memory: 8 GB
- System memory: 64 GB
- CPU: Quad-Core x86
- Flash storage: 8 GB
- SSD storage: 120 GB
- Management port: 1 x 100/1000
- Serial console: 1 x RS-232 (RJ-45)
- USB ports: 1
- Encryption: TunnelSec on QSFP100 ports (MACsec, IPsec, VXLANsec, AES-256-GCM)
- Power supplies: 2 x PWR-1011 AC, hot-swap, 1+1 redundant
- Fans: 3 x hot-swap, N+1 redundant (FAN-7011H)
- Airflow: Rear to front
- Rack units: 1U
- Dimensions (W x H x D): 43.99 x 4.37 x 55.83 cm
- Weight: 12.27 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.25.2F

FAQs

Q: Which licence group does this switch fall under?
A: It runs Arista EOS in Feature License Group 3. Options for this group include LIC-FIX-3-MACSEC, LIC-FIX-3-ENCR, LIC-FIX-3-E and the FLX tiers. This SKU is the non-FLX large-route model.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-1011 AC power supplies in a 1+1 redundant arrangement. Each accepts 100-240V AC at 50/60Hz and delivers 1100 W with Platinum efficiency through an IEC C14 inlet.

Q: Which optics work in the 400G and 100G ports?
A: The 4 x QSFP-DD ports accept 400G optics and DACs such as SR8, DR4, XDR4, FR4, LR4 and ZR, and break out to 200G, 100G, 50G and 25G. The 32 x QSFP100 ports support 100G optics and DACs, 40G QSFP+ optics and breakout to 4x10G or 4x25G.

Q: What does the -R suffix mean?
A: The -R suffix indicates rear-to-front airflow. The fans move air from the rear of the chassis to the front, matching hot-aisle or rear-intake rack layouts.

Q: How does this SKU differ from the FLX variant?
A: This is the base non-FLX large-route model. The FLX variant adds over 256K routes plus MPLS and VXLAN capabilities.