Arista DCS-7280CR3AK-72-R | 7280R3A 72-Port 100G Switch, TunnelSec, Rear-to-Front Air

SKU:DCS-7280CR3AK-72-R

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router built for large-scale Layer 2 and Layer 3 cloud designs, enterprise data centres and service provider networks. It suits leaf or spine roles, Internet border and peering, data centre interconnect, carrier edge VPN services and encrypted WAN or DCI links. This R3AK model combines TunnelSec encryption with the large route and policy scale of the 7280R3A Series.

It provides 72 x QSFP100 ports for 100GbE, with 40G, 50G and 25/10G operation through QSFP+ or breakout, and delivers 7.2 Tbps of throughput (14.4 Tbps full duplex) at 2.7 Bpps with latency from 3.8 us. An 8 GB packet buffer, 64 GB of system memory and an eight-core x86 CPU support deep buffering and a route table of over 5M IPv4 routes. TunnelSec provides MACsec, IPsec and VXLANsec encryption on all ports. This SKU has rear-to-front airflow, two hot-swap AC power supplies in a 1+1 arrangement and four hot-swap fans.

The QSFP100 ports accept 100GBASE-LRL4, XCWDM4, CWDM4, FR, DR, PSM4 and ERL4 optics, AOC and CR4 DAC cables. The switch runs Arista EOS, with a minimum release of 4.31.2.

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

Features

- Line-rate TunnelSec encryption (MACsec, IPsec, VXLANsec) using AES-256-GCM
- FlexRoute engine for Internet-scale routing with over 5M IPv4 routes
- Algorithmic ACLs supporting 400K+ rules
- Deep packet buffers with virtual output queues per port to avoid head-of-line blocking
- EVPN-VXLAN, EVPN-MPLS, Segment Routing, LDP, RSVP-TE, TI-LFA and fast reroute
- Layer 2 MLAG and Layer 3 ECMP for leaf-spine designs
- Programmability through CloudVision, LANZ, ZTP, eAPI, NETCONF, RESTCONF, gNMI and OpenConfig
- Single 64-bit EOS image with full Linux shell access and bash, python and C++ extensibility

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: 7280CR3AK-72
- Ports: 72 x QSFP100
- Max 100G ports: 72
- Max 50G-2 ports: 102
- Max 40G ports (using QSFP+): 72
- Max 25/10G ports: 102
- 400G ports: Not supported
- Max total interfaces: 116
- Throughput (full duplex): 7.2 (14.4) Tbps
- Packets per second: 2.7 Bpps
- Latency: From 3.8 us
- CPU: Eight-core x86
- System memory: 64 GB
- Packet buffer memory: 8 GB
- SSD storage: 120 GB
- Encryption: All ports (TunnelSec)
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management ports: 1 x 100/1000, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap AC (1+1 redundant)
- Fans: 4 x hot-swap (N+1 redundant), FAN-7012H
- Airflow direction: Rear to front
- Typical / maximum power draw: 406 W / 754 W (excludes transceivers)
- Rack units: 2 U
- Dimensions (W x H x D) including handles: 43.99 x 8.79 x 68.69 cm
- Weight: 22.41 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m
- Minimum EOS: 4.31.2

FAQs

Q: What software does this switch run, and is a licence needed?
A: It runs Arista EOS, with a minimum release of 4.31.2. The datasheet lists EOS Feature Licenses Group 4 for the 7280CR3AK-72. Confirm the specific software and feature licence SKUs you need with Arista.

Q: What power supplies does it use?
A: It uses two hot-swap AC power supplies in a 1+1 redundant arrangement. Supported models are PWR-1513-AC, PWR-1512-AC or PWR-1511-DC. Typical draw is 406 W and maximum is 754 W, measured without transceivers.

Q: Which optics and cables work in the QSFP100 ports?
A: The ports support 100GBASE-LRL4, XCWDM4, CWDM4, FR, DR, PSM4 and ERL4 optics, AOC cables from 1 to 30 m and CR4 DAC cables from 1 to 5 m. They also support 40G QSFP+ and 50G or 25/10G breakout, subject to the transceiver and cable used.

Q: How does the R3AK model differ from other 7280R3A variants?
A: The R3AK is the Large Scale model, adding TunnelSec encryption on all ports and a route table of over 5M IPv4 routes. This SKU also has rear-to-front airflow and two AC power supplies.

Q: Which airflow direction does this SKU have?
A: The -R SKU has rear-to-front airflow using four FAN-7012H hot-swap fans.