Arista DCS-7280CR3AM-72-R | 7280R3A 72-Port 100G Switch, TunnelSec, Rear-to-Front

SKU:DCS-7280CR3AM-72-R

Stock Status: Enquire

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Description

The Arista 7280R3A 72-port 100G switch is a 2RU fixed data centre switch router built for leaf and spine fabrics, Internet border and peering roles, and data centre interconnect. This model is the TunnelSec variant, adding line-rate encryption on every port using MACsec, IPsec and VXLANsec, which suits encrypted links across third-party infrastructure. It runs Arista EOS and is managed with CloudVision.

There are 72 QSFP100 ports delivering 7.2 Tbps of throughput (14.4 Tbps full duplex) and 2.7 Bpps. Breakout options reach up to 102 x 50G or 102 x 25/10G interfaces, and 40G QSFP+ optics are supported. An 8 GB packet buffer and a deep-buffer virtual output queue architecture avoid head-of-line blocking, with latency from 3.8 us. This SKU ships with rear-to-front airflow and two hot-swap AC power supplies in a 1+1 arrangement, with four hot-swap fans. Typical power draw is 406 W and maximum is 754 W.

The 100G ports accept a wide range of optics and cables, including 100GBASE-SR4, LR4, CWDM4, PSM4, AOC and CR4 DAC up to 5m. EOS 4.31.2 or later is required. Encryption is an EOS licensed feature that uses a Group 4 licence file.

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

Features

- TunnelSec line-rate AES-256-GCM encryption: MACsec (IEEE 802.1AE), IPsec (RFC 4303) and VXLANsec
- Encryption on all interface speeds from 10G to 400G with no performance penalty
- Deep-buffer virtual output queue architecture that eliminates head-of-line blocking
- FlexRoute engine for Internet-scale routing, peering and data centre interconnect
- EVPN-VXLAN, MLAG, ECMP, MPLS (LDP, RSVP-TE, SR-TE) and TI-LFA
- PTP (IEEE 1588) and Synchronous Ethernet precision timing
- LANZ microburst detection, accelerated sFlow, CloudVision integration and Zero Touch Provisioning
- Open programmability through eAPI, NETCONF, RESTCONF, gNMI and OpenConfig

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: 72 x QSFP100
- Max 100G ports: 72
- Max 50G ports: 102
- Max 40G ports (using QSFP+): 72
- Max 25/10G ports: 102
- Encryption: TunnelSec on all ports (MACsec, IPsec, VXLANsec)
- Throughput (FDX): 7.2 (14.4) Tbps
- Packets per second: 2.7 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 8 GB
- CPU: Eight-core x86
- System memory: 64 GB
- SSD storage: 120 GB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management: 1 x 100/1000 port, 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), rear-to-front airflow
- Typical/max power draw: 406 W / 754 W
- Rack units: 2U
- Dimensions (WxHxD): 43.99 x 8.79 x 68.69 cm including handles
- Weight: 22.41 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.2

FAQs

Q: Does the TunnelSec encryption need a licence?
A: Yes. The hardware supports encryption on all ports, but encryption is an EOS licensed feature that requires a licence file. For this Group 4 fixed switch the relevant licences are LIC-FIX-4-MACSEC for MACsec and LIC-FIX-4-ENCR for TunnelSec and IPsec.

Q: What power supplies does it use?
A: It takes two hot-swap PSUs in a 1+1 redundant configuration. Compatible models are PWR-1513-AC and PWR-1512-AC (200-240 VAC, 1500 W) and PWR-1511-DC (-48 to -60 VDC, 1500 W). This SKU is the AC version.

Q: Which optics and cables work with the 100G ports?
A: The QSFP100 ports support 100GBASE-SR4, XSR4, SWDM4, LR, LR4, CWDM4, FR, DR, PSM4, ERL4, AOC and CR4 DAC up to 5m. 40G QSFP+ optics are also supported, along with 4x10G and 4x25G breakouts.

Q: What does the -R suffix mean for airflow?
A: The -R SKU has rear-to-front airflow. The same family also comes in a front-to-rear (-F) version, so match the airflow to your rack's hot and cold aisle layout.

Q: Which EOS version does it need?
A: It requires Arista EOS 4.31.2 or later, and it is managed through CloudVision.