• Gray arista dcs-7280sr3-48yc8-f network switch with 48 25g ports and green indicator lights on front panel
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Arista

Arista DCS-7280SR3-48YC8-F | 7280R3 48-Port 25G Switch, 8x 100G QSFP28

DCS-7280SR3-48YC8-F

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Description

The Arista DCS-7280SR3-48YC8-F is a high-performance 1RU data center switch designed for leaf, spine, and storage deployments in modern cloud and enterprise networks. With 48 ports of 25GbE SFP28 and 8 ports of 100GbE QSFP28 uplinks, this Layer 3 switch delivers 4.8 Tbps switching capacity with deep 4GB packet buffers and ultra-low latency for lossless forwarding. Built on the Broadcom Jericho2 architecture with Virtual Output Queue technology, it supports advanced features including VXLAN/EVPN, internet-scale routing tables, algorithmic ACLs, and comprehensive Layer 2/3 protocols for scalable data center fabrics.

Features

• Virtual Output Queue (VOQ) architecture with 4GB deep packet buffer for lossless forwarding
- • Layer 2 switching: VLANs (4096), IEEE 802.1Q, 802.1ad Q-in-Q, Spanning Tree (STP/RSTP/MSTP)
- • Layer 3 routing: OSPF, BGP, IS-IS, static routing, IPv4 and IPv6 support
- • VXLAN hardware VTEP with EVPN control plane for overlay networking
- • Algorithmic ACLs supporting 100,000+ rules with flexible pattern matching
- • sFlow and IPFIX support for network telemetry and visibility at line rate
- • Multi-Chassis Link Aggregation (MLAG) for high availability
- • Network virtualization: VRF-Lite, VXLAN routing and bridging
- • Traffic engineering: RSVP-TE, Segment Routing (SR-TE)
- • Quality of Service: Advanced QoS with weighted fair queueing, strict priority, and hybrid scheduling
- • Multicast: PIM-SM, PIM-SSM, IGMP v1/v2/v3 snooping
- • Precision Time Protocol (PTP) for accurate time synchronization
- • Arista EOS operating system with zero-touch provisioning (ZTP), REST API, and programmability
- • Hot-swappable redundant power supplies and fan modules for high availability
- • Microburst detection and advanced buffer monitoring
- • CloudVision integration for network-wide visibility and automation

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 25 Gigabit Ethernet SFP28 ports (supports 1G/10G/25G)
- • 8x 100 Gigabit Ethernet QSFP28 uplink ports (supports 40G/100G with 4x10G or 4x25G breakout capability)
- • Switching capacity: 4.8 Tbps throughput (9.6 Tbps full-duplex)
- • Forwarding rate: 2 Bpps (billion packets per second)
- • Packet buffer: 4 GB deep buffer memory
- • Latency: Ultra-low 800ns (from 3.8µs depending on configuration)
- • MAC address table: Up to 384,000 entries
- • IPv4 unicast routes: Up to 1.45 million (L3 profile), 800k (balanced profile)
- • System memory: 8GB DRAM, 8GB Flash storage
- • CPU: Quad-core x86 processor
- • Management: 1x Gigabit Ethernet management port, 1x RJ-45 RS-232 console, 1x USB port
- • Power supplies: Dual hot-swappable 500W AC power supplies (PWR-511-AC-RED)
- • Airflow: Front-to-rear (F-B) airflow with redundant hot-swappable fan modules
- • Form factor: 1RU rack-mountable
- • Dimensions: 1.75" H x 17.4" W x 20.7" D
- • Weight: 10.5 kg (approximately 23 lbs)
- • Operating temperature: 0°C to 40°C
- • Compliance: IEEE 802.3, RoHS

FAQs

Q: What is the primary use case for the DCS-7280SR3-48YC8-F switch?
A: This switch is designed for high-performance data center deployments including leaf/spine architectures, IP storage networks, content delivery, data center interconnect, and VXLAN/EVPN overlay fabrics. Its deep buffer architecture makes it ideal for mixed workloads with bursty traffic patterns.

Q: Does this model support port breakout configurations?
A: Yes, the 8x 100GbE QSFP28 uplink ports support breakout to 4x25G or 4x10G per port, allowing up to 80 total logical interfaces in a single 1RU switch for flexible network designs.

Q: What routing scale does the DCS-7280SR3-48YC8-F support?
A: The switch supports internet-scale routing with up to 1.45 million IPv4 unicast routes in L3 profile mode, or 800k in balanced profile. It uses Arista's FlexRoute engine with multiple forwarding profiles optimized for different deployment scenarios including internet peering and data center fabrics.

Q: Is MACsec encryption supported on this model?
A: The standard DCS-7280SR3-48YC8-F does not include MACsec. For wire-speed AES-256-GCM encryption, consider the 7280SR3M-48YC8-F variant which provides IEEE 802.1AE MACsec on all ports for secure connectivity within and between data centers.

Q: What makes the deep buffer architecture important?
A: The 4GB packet buffer with Virtual Output Queue architecture eliminates head-of-line blocking and virtually eliminates packet drops during network congestion or microbursts. This ensures lossless forwarding for latency-sensitive applications, storage traffic, and mixed workload environments common in modern data centers.

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