• Gray metal Arista DCS-7280CR3A-48D6-F 48-port 100G network switch with 6x 400G QSFP-DD and ventilation slots
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Arista

Arista DCS-7280CR3A-48D6-F | 7280R3A 48-Port 100G Switch, 6x 400G QSFP-DD

DCS-7280CR3A-48D6-F

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Description

The Arista DCS-7280CR3A-48D6-F is a high-performance 1RU data center switch delivering 7.2 Tbps switching capacity with 48 x 100GbE QSFP ports and 6 x 400GbE QSFP-DD uplinks. Designed for demanding leaf-spine architectures, cloud networks, and storage environments, it features 8GB of deep packet buffers, front-to-rear airflow, and dual redundant AC power supplies. Ideal for high-density 100G deployments with 400G uplink connectivity.

Features

Non-blocking Layer 2 and Layer 3 switching with wire-speed performance
- Deep 8GB packet buffer for burst absorption and lossless forwarding
- Arista FlexRoute engine for flexible forwarding table allocation
- EVPN-VXLAN support for overlay networking and data center fabrics
- Multi-Chassis Link Aggregation (MLAG) for active-active redundancy
- ECMP routing for scalable spine-leaf architectures
- Accelerated sFlow and IPFIX for real-time telemetry and network monitoring
- Inband Network Telemetry (INT) for per-flow latency and congestion visibility
- Support for 400G-ZR coherent optics via OSFP-LS port
- Algorithmic ACLs for scalable access control and policy-based forwarding
- Hot-swappable dual redundant AC or DC power supplies
- Hot-swappable fan modules with front-to-rear airflow
- Precision Time Protocol (PTP) and SyncE for timing synchronization
- Standards-based protocols: BGP, OSPF, MPLS, Segment Routing, mLDP
- Arista EOS with consistent modular architecture and zero-touch provisioning

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

48 x 100GbE QSFP28 ports (supports 10/25/40/50/100G)
- 6 x 400GbE QSFP-DD uplink ports
- Switching capacity: 7.2 Tbps
- Forwarding rate: 2.4 Bpps
- Packet buffer: 8 GB deep buffer
- 1 x OSFP-LS port for 400G-ZR DWDM
- Latency: Sub-microsecond
- Form factor: 1RU rack-mountable
- Airflow: Front-to-rear (red PSU/fans)
- Power supplies: 2 x PWR-1511-AC or PWR-1511-DC, hot-swappable
- Typical power consumption: 350W
- Operating temperature: 0°C to 40°C
- Management: Arista EOS, CLI, SNMP, web interface
- Advanced features: FlexRoute, MLAG, VXLAN, EVPN, MACsec (R3AM/R3AK models)

FAQs

Q: What is the difference between the -F, -R, and # suffix models?
A: The -F suffix indicates front-to-rear airflow (red PSU and fans), -R indicates rear-to-front airflow (blue PSU and fans), and # indicates a chassis-only configuration with configurable fan and PSU options. All have identical port configurations and performance.

Q: Can this switch support both 100G and 400G connectivity simultaneously?
A: Yes, the DCS-7280CR3A-48D6-F provides 48 x 100G QSFP28 ports for server or leaf connectivity and 6 x 400G QSFP-DD ports for high-bandwidth spine uplinks, enabling efficient leaf-spine architectures with mixed speeds.

Q: Does this model support MACsec encryption?
A: The base R3A model does not include MACsec. For line-rate AES-256-GCM encryption, consider the 7280CR3AM-48D6 (with MACsec) or 7280CR3AK-48D6 (with MACsec and large routing tables) variants.

Q: What routing table capacity does this switch support?
A: The standard 7280CR3A model supports flexible forwarding tables optimized for data center workloads. For internet peering or carrier-scale routing with over 256K routes or up to 5 million routes with FlexRoute, upgrade to the R3AK model.

Q: Is this switch suitable for VXLAN overlay networks?
A: Yes, the 7280R3A Series runs Arista EOS with full support for EVPN-VXLAN overlays, MLAG, and ECMP routing, making it ideal for modern spine-leaf data center fabrics and cloud-scale deployments.

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