• Silver-colored arista dcs-7020r4m-48y-4qc-r 48-port 25g switch backside with red fan covers and ventilation grilles
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Arista

Arista DCS-7020R4M-48Y-4QC-R | 7020R4 48-Port 25G Switch, 4x 100G QSFP, 2.8Tbps

DCS-7020R4M-48Y-4QC-R

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Description

The Arista 7020R4M-48Y-4QC-R is a high-performance data centre switch router designed for spine, leaf, and aggregation deployments requiring wire-rate throughput with enhanced hardware encryption. Featuring 48x 25GbE SFP28 ports and 4x 100GbE QSFP uplinks, it delivers 2.8 Tbps switching capacity and 900 Mpps forwarding rate for demanding cloud and enterprise environments. Running Arista EOS, it supports advanced Layer 2/3 routing, EVPN/VXLAN, MACsec encryption, and integrates with Arista CloudVision for centralised management and telemetry. Rear-to-front airflow and redundant AC power supplies ensure mission-critical reliability in hot-aisle/cold-aisle data centre architectures.

Features

48x 25GbE SFP28 downlink ports with line-rate performance
- 4x 100GbE QSFP uplink ports for high-bandwidth aggregation
- Hardware-based MACsec encryption for secure inter-switch links and DCI
- 2.8 Tbps switching capacity and 900 Mpps forwarding rate
- Advanced Layer 2 and Layer 3 routing: BGP, OSPF, IS-IS, PIM multicast
- EVPN/VXLAN gateway, bridging, and routing for overlay fabrics
- Virtual output queue (VoQ) architecture to eliminate head-of-line blocking
- Deep packet buffering (2GB) for low latency under load
- ECMP load balancing for efficient multi-path traffic distribution
- Integrated packet capture, sFlow, and multi-port mirroring for visibility
- Arista CloudVision integration for streaming telemetry and automation
- Programmable via eAPI, OpenConfig, and gNMI for DevOps workflows
- Rear-to-front airflow (port-side exhaust) for standard data centre cooling
- Dual redundant AC power supplies (2x 500W) for high availability
- Compact 1RU form factor for space-efficient rack deployments
- Comprehensive QoS and traffic management features

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

48x 25GbE SFP28 ports for high-density server connectivity
- 4x 100GbE QSFP ports for spine or uplink connections
- Switching capacity: 2.8 Tbps
- Forwarding rate: 900 Mpps (million packets per second)
- 16GB RAM for robust performance under load
- 2GB packet buffer memory for deep buffering and low latency
- Enhanced hardware encryption support (MACsec)
- Rear-to-front airflow (port-side exhaust) for hot-aisle/cold-aisle compatibility
- Dual redundant AC power supplies (2x 500W)
- Operating system: Arista EOS
- Form factor: 1RU fixed rack-mountable
- Management: CLI, eAPI, OpenConfig, gNMI, SNMP, Arista CloudVision
- Layer 2 and Layer 3 switch router with full routing protocol support

FAQs

Q: What is the difference between the DCS-7020R4M-48Y-4QC-R and standard 7020R4 models?
A: The 'M' in the SKU indicates enhanced hardware encryption capability (MACsec support), enabling secure Layer 2 encryption at line rate without impacting performance. The '-R' suffix denotes rear-to-front airflow (port-side exhaust), which suits standard hot-aisle/cold-aisle data centre rack deployments.

Q: What deployment scenarios is the Arista 7020R4M-48Y-4QC-R best suited for?
A: This switch is designed for data centre spine/leaf architectures, cloud aggregation layers, secure data centre interconnects, and enterprise core networks requiring high-density 25GbE access with 100GbE uplink capacity and hardware-accelerated encryption. It is particularly well-suited for secure multi-tenant environments and compliance-sensitive deployments.

Q: Does the Arista 7020R4 support EVPN and VXLAN for overlay networking?
A: Yes. Running Arista EOS, the 7020R4 fully supports EVPN/VXLAN overlay networking, making it ideal for building software-defined data centre fabrics, multi-tenant architectures, and modern leaf-spine designs with advanced network virtualization capabilities.

Q: Can the Arista 7020R4M be managed with Arista CloudVision?
A: Yes. The 7020R4 integrates natively with Arista CloudVision for centralised provisioning, streaming telemetry, change control, network-wide visibility, and automation workflows. CloudVision supports both on-premise and cloud-based management for large-scale data centre deployments.

Q: What power and redundancy features does this model include?
A: The DCS-7020R4M-48Y-4QC-R ships with two AC power supplies in a redundant 1+1 configuration, ensuring continuous operation even in the event of a single PSU failure. Each power supply is rated at 500W, providing the reliability required for mission-critical data centre infrastructure.

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