• Stack of four silver arista dcs-7280sr3m-48yc8-flx-r 48-port 25g network switches with ventilation grilles
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Arista

Arista DCS-7280SR3M-48YC8-FLX-R | 7280R3 48-Port 25G Switch, MACsec, 8x 100G QSFP28

DCS-7280SR3M-48YC8-FLX-R

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Description

The Arista DCS-7280SR3M-48YC8-FLX-R is a high-performance data center switch router featuring 48 x 25GbE SFP28 ports with MACsec encryption and 8 x 100GbE QSFP28 uplinks. Designed for cloud, content delivery, leaf and spine networks, and data center interconnect, this 1U switch delivers 2.4 Tbps throughput with 4GB packet buffer and 1 Bpps forwarding rate. The FLX-R model includes rear-to-front airflow, dual AC power supplies, and FlexRoute support for up to 256K routes with EVPN, VXLAN, and MPLS capabilities.

Features

Layer 2 and Layer 3 switching with internet-scale routing tables
- MACsec hardware-based encryption on all SFP28 and QSFP28 ports using AES-256-GCM
- FlexRoute engine supporting up to 256K IPv4 routes with FLX-Lite license
- VXLAN network virtualization with EVPN control plane
- MPLS Label Switching with Segment Routing support
- Algorithmic ACLs with 100K+ rule support and expanded pattern matching
- Dynamic deep packet buffering (4GB) with virtual output queue architecture
- sFlow sampling on all interfaces at full forwarding capacity
- MLAG for dual-homing and high availability
- BGP, OSPF, IS-IS routing protocol support
- PTP (Precision Time Protocol) and SyncE for network timing
- Hot-swappable dual redundant power supplies and fan modules
- Zero Touch Provisioning (ZTP) for automated deployment
- Arista EOS with full Linux shell access and REST API
- Native support for automation via Ansible, Python, and REST APIs
- LANZ (Latency Analyzer) for micro-burst detection and analysis

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 25GbE SFP28 ports with MACsec support for 1G, 10G, and 25G operation
- 8 x 100GbE QSFP28 uplink ports with MACsec, supporting 40G, 100G, and breakout to 10G/25G/50G
- Switching capacity: 2.4 Tbps wire speed throughput
- Forwarding rate: 1 Bpps (billion packets per second)
- Packet buffer: 4 GB deep buffer for lossless forwarding
- MAC addresses: Up to 384K
- Routing table: Over 256K IPv4 routes with FLX license (supports EVPN, VXLAN, SR, base MPLS LSR)
- ACL support: Algorithmic ACLs supporting 100K+ rules with expanded pattern matching
- Power consumption: 155W typical, 325W maximum
- Dual redundant AC power supplies (2 x AC)
- Airflow: Rear-to-front airflow (R model)
- Form factor: 1RU rack-mountable
- Dimensions: 1.7 inches H x 17.3 inches W x 18.4 inches D
- Weight: Approximately 20.2 lbs
- Management: Arista EOS with CLI, web interface, SNMP, NetDB, CloudVision support
- Processor: Quad-core x86 Intel Atom with 16GB ECC DRAM
- Latency: As low as 800 ns

FAQs

Q: What is MACsec and why is it important?
A: MACsec (IEEE 802.1AE) provides line-rate encryption at the link layer for point-to-point security. This switch supports MACsec on all 48 x 25GbE and 8 x 100GbE ports, enabling authenticated AES-256-GCM encryption without performance impact, critical for secure data center and inter-DC connectivity.

Q: What does the FLX license include?
A: The FLX-Lite license enables full routing with up to 256K routes, EVPN, VXLAN, Segment Routing, and base MPLS LSR functionality. This makes the switch suitable for internet peering, data center interconnect, and service provider edge deployments requiring advanced Layer 3 capabilities.

Q: Can this switch be used in leaf-spine architectures?
A: Yes, the DCS-7280SR3M-48YC8-FLX-R is ideal for leaf-spine data center fabrics. Use the 48 x 25GbE ports for server connectivity and the 8 x 100GbE uplinks for spine connections. It supports VXLAN overlays, EVPN, and MLAG for modern cloud-scale network designs.

Q: What is the difference between the -F and -R models?
A: The difference is airflow direction only. The -R model (this SKU) uses rear-to-front airflow where cool air enters from the fan side and exhausts from the port side. The -F model uses front-to-rear airflow. Choose based on your data center hot/cold aisle design.

Q: Is this switch compatible with Arista CloudVision?
A: Yes, this switch fully integrates with Arista CloudVision for centralized network management, telemetry, configuration automation, and intent-based networking workflows. It runs Arista EOS with full Linux shell access for advanced programmability and DevOps integration.

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