• Gray metal arista dcs-7280cr3k-32p4a-flx-r network switch with 32x100g qsfp28 ports and ventilation slots visible from back side
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Arista

Arista DCS-7280CR3K-32P4A-FLX-R | 7280R3 32x100G QSFP28 + 4x400G OSFP Switch, 4.8Tbps

DCS-7280CR3K-32P4A-FLX-R

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Description

The Arista DCS-7280CR3K-32P4A-FLX-R is a 1RU data centre switch router engineered for high-performance spine, aggregation, and DCI deployments. It delivers 4.8 Tbps non-blocking throughput with 32 x 100GbE QSFP28 ports plus 4 x 400GbE OSFP ports, backed by 8GB VOQ deep packet buffer memory for burst absorption. The FLX license provides full routing capabilities with over 256K routes, advanced MPLS, EVPN, VXLAN, and Segment Routing, making it ideal for large-scale data centres requiring carrier-grade routing and overlay networking.

Features

Layer 2/3 switch router with full BGP, OSPF, IS-IS support
- MPLS: LDP, RSVP-TE, BGP Labeled Unicast (BGP LU) for carrier-grade MPLS networks
- Segment Routing (SR-TE) and EVPN for modern overlay networks
- VXLAN routing and bridging with hardware VTEP
- 512-way ECMP for multi-path load balancing
- FlexRoute scaling: Over 5M IPv4 routes, over 5M IPv6 routes, 384K MAC addresses (K-variant)
- Algorithmic ACLs supporting over 100K rules
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- 8 GB deep packet buffer for burst absorption and lossless performance
- Precision timing: IEEE 1588 PTP, SyncE, G.8275.1/2 Telecom Profile
- Advanced telemetry: LANZ (Latency Analyzer), sFlow, DANZ mirroring
- Zero-Touch Provisioning (ZTP) and CloudVision integration
- Arista EOS modular operating system with in-service software upgrades
- Redundant hot-swappable AC power supplies and fan modules
- Rear-to-front airflow for hot-aisle exhaust deployments

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: 32 x 100GbE QSFP28, 4 x 400GbE OSFP
- Maximum Configurations: Up to 4 x 400G, 48 x 100G, 96 x 50G, 36 x 40G, or 96 x 25G/10G interfaces
- Maximum Interfaces: 96 total
- Throughput: 4.8 Tbps full-duplex (9.6 Tbps aggregate)
- Forwarding Rate: 2 Bpps
- Latency: From 3.8 µs (store-and-forward)
- Packet Buffer Memory: 8 GB (VOQ architecture)
- CPU: Quad-core x86
- System Memory: 64 GB DRAM
- Flash Storage: 8 GB
- SSD Storage: 120 GB
- Management: 1 x 100/1000 Mbps out-of-band Ethernet port, 1 x RS-232 console port
- USB Ports: 1
- Airflow: Rear-to-front
- Power Supplies: 2 x AC (redundant)
- Form Factor: 1RU

FAQs

Q: What does the FLX license tier include on this switch?
A: The FLX license tier provides full routing capabilities with over 256K IPv4/IPv6 routes, EVPN, VXLAN, Segment Routing (SR), and base MPLS LSR functionality. This is Arista's FLX-Lite tier optimised for data centre and service provider edge deployments requiring advanced routing and overlay capabilities.

Q: What is the difference between the 32P4A and 32P4 models?
A: The 32P4A variant features 64 GB of standard system memory and expanded routing scale (large route tables), while the 32P4 offers 8 GB standard memory with an optional 64 GB upgrade. The A-suffix models are optimised for full internet routing table and large-scale EVPN deployments.

Q: Can the OSFP ports operate at speeds other than 400G?
A: Yes, the 4 x 400GbE OSFP ports support flexible speed configurations including 400G, 200G, and 100G line rates, allowing deployment flexibility depending on infrastructure and transceiver availability.

Q: What deployment scenarios is this switch best suited for?
A: The DCS-7280CR3K-32P4A-FLX-R is ideal for data centre spine aggregation, high-density leaf uplinks, data centre interconnect (DCI), service provider edge routing with MPLS, and large-scale EVPN/VXLAN overlay fabrics requiring deep buffers and carrier-grade routing.

Q: Does this switch support redundant power and hot-swappable components?
A: Yes, the switch includes dual redundant AC power supplies and supports hot-swappable fan modules, ensuring high availability in mission-critical deployments.

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