• Back side view of silver arista dcs-7020r4m-48y-4qc-f 48-port 25g switch with red fan covers and ventilation grilles
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Arista

Arista DCS-7020R4M-48Y-4QC-F | 7020R4 48-Port 25G Switch, 4x 100G QSFP+

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

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Description

The Arista 7020R4M-48Y-4QC-F is a high-performance data centre switch router designed for demanding leaf, spine, and edge applications. Featuring 48x 25GbE SFP28 ports and 4x 100GbE QSFP ports, this platform delivers 2.8 Tbps throughput with deep buffer VOQ architecture for lossless forwarding. Enhanced hardware encryption support provides line-rate MACsec and TunnelSec for secure data centre interconnects, while front-to-rear airflow and dual redundant AC power supplies ensure reliable operation in modern hot-aisle/cold-aisle deployments.

Features

48x line-rate 25GbE SFP28 ports for high-density server connectivity
- 4x 100GbE QSFP uplink ports for spine or inter-switch connections
- 2.8 Tbps switching capacity with non-blocking architecture
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- Dynamic deep packet buffers up to 4 GB for lossless forwarding
- Hardware-accelerated line-rate encryption: MACsec, TunnelSec AES-256-GCM
- FlexRoute engine supports over 2.5 million routes with low power consumption
- Comprehensive Layer 2 and Layer 3 switching and routing
- EVPN-VXLAN support for modern data centre fabric architectures
- MPLS and Segment Routing for service provider and enterprise WAN
- IEEE 1588 PTP and Synchronous Ethernet for precision timing
- Accelerated sFlow for high-rate network telemetry and monitoring
- Inband Network Telemetry (INT) for real-time path tracing
- Arista CloudVision integration for centralised management and automation
- 128-way ECMP for efficient multi-path load balancing
- Dual redundant hot-swappable AC power supplies
- N+1 redundant hot-swappable fan modules
- Front-to-rear airflow for standard data centre cooling
- Zero Touch Provisioning (ZTP) for rapid deployment
- Stateful Fault Repair (SFR) for self-healing resiliency

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
- 4x 100GbE QSFP ports
- Switching capacity: 2.8 Tbps
- Forwarding rate: up to 900 million packets per second
- Memory: 16 GB DRAM
- Packet buffer: 2 GB (up to 4 GB dynamic deep buffer)
- Virtual Output Queue (VOQ) architecture
- Front-to-rear airflow direction
- Dual redundant AC power supplies (500W each)
- Form factor: 1RU rack-mountable
- Management: Arista EOS, CLI, CloudVision, eAPI, OpenConfig, SNMP
- Enhanced hardware encryption: MACsec, TunnelSec (line-rate AES-256-GCM)
- Routing protocols: BGP, OSPF, ISIS, EVPN, VXLAN, MPLS, Segment Routing

FAQs

Q: What does the 'M' designation mean in the SKU?
A: The 'M' indicates enhanced hardware encryption support, including line-rate MACsec and TunnelSec capabilities. This enables secure traffic encryption at wire speed without impacting forwarding performance, ideal for secure data centre interconnects and compliance-sensitive environments.

Q: What is the airflow direction of the DCS-7020R4M-48Y-4QC-F?
A: The 'F' suffix designates front-to-rear airflow, where air flows from the switch port side to the fan side. This is the standard configuration for hot-aisle/cold-aisle data centre deployments where cool air enters from the front of the rack.

Q: What routing and switching protocols does the 7020R4 support?
A: Running Arista EOS, the 7020R4 supports a comprehensive suite including BGP, OSPF, ISIS, EVPN, VXLAN, MPLS, Segment Routing, PIM multicast, ECMP, and advanced QoS. It scales to over 2.5 million routes with flexible forwarding profiles suitable for Internet edge, data centre leaf-spine, and service provider roles.

Q: Is the 7020R4 suitable for EVPN-VXLAN data centre fabrics?
A: Yes, the 7020R4 is purpose-built for modern software-defined data centre fabrics. It supports EVPN-VXLAN overlay networking, VXLAN gateway functionality, and integrates with Arista CloudVision for centralised orchestration, streaming telemetry, and network-wide automation.

Q: What are typical use cases for the 7020R4M-48Y-4QC-F?
A: This platform is ideal for data centre leaf switches in spine-leaf architectures, cloud aggregation layers, secure data centre interconnects requiring encryption, service provider access networks, high-performance computing environments, and media/broadcast networks requiring deep buffers and lossless forwarding.

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