• Stack of four silver-colored arista dcs-7280sr3mk-48yc8a-s-f 48-port 25g network switches with ventilation grilles
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Arista

Arista DCS-7280SR3MK-48YC8A-S-F | 7280R3 48-Port 25G Switch, MACsec, 8x 100G QSFP

DCS-7280SR3MK-48YC8A-S-F

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Description

The Arista DCS-7280SR3MK-48YC8A-S-F is a high-performance 1RU data center switch router featuring 48x 25GbE SFP ports and 8x 100G QSFP uplinks with line-rate MACsec encryption and Secure Boot. Designed for cloud data centers, content delivery networks, and service provider environments, it delivers 2.4 Tbps throughput with deep packet buffers and supports over 256K routes for large-scale routing deployments. The enhanced route table capacity and MACsec capabilities make it ideal for spine-leaf architectures, data center interconnect, and IP peering applications requiring both performance and security.

Features

Line-rate 256-bit AES-GCM MACsec encryption on all 48x 25G and 8x 100G ports
- Secure Boot enabled firmware for trusted boot process and enhanced security posture
- FlexRoute engine with over 256K IPv4/IPv6 routes, MPLS, and VXLAN for internet-scale routing
- 8GB high-bandwidth memory (HBM2) packet buffer with Virtual Output Queue (VOQ) architecture for lossless forwarding
- Ultra-low latency: sub-5 microsecond store-and-forward latency
- Comprehensive Layer 2 features: VLANs, LACP, MLAG, STP/RSTP/MSTP, LLDP
- Advanced Layer 3 routing: BGP, OSPF, IS-IS, static routing, 512-way ECMP/UCMP
- MPLS and Segment Routing: LDP, RSVP-TE, SR-TE, BGP-LU, fast reroute (FRR)
- EVPN and VXLAN: L2/L3 EVPN, EVPN-MPLS, EVPN-VXLAN, IRB, EVPN-DCI, EVPN-Multicast
- Precision timing: IEEE 1588v2 PTP (Boundary Clock, Transparent Clock), SyncE for telecom-grade timing
- Algorithmic ACLs for high-scale access control and policy-based forwarding with pattern matching
- Accelerated sFlow with integrated sFlow engines supporting 1:500 sampling at wire speed
- Inband Network Telemetry (INT) for flow-level visibility and packet forensics
- Quality of Service: Flexible classification, ingress policing, hierarchical QoS, traffic shaping
- High availability: 1+1 redundant hot-swappable AC power supplies, N+1 hot-swappable fan trays
- Arista EOS: Linux-based modular OS with in-service software upgrades, stateful fault repair, and Python/Bash scripting
- CloudVision integration for network-wide provisioning, change control, and streaming telemetry
- Zero-Touch Provisioning (ZTP) for automated deployment
- Standards-based management: SNMP, NETCONF, RESTCONF, gNMI, OpenConfig, eAPI (REST/JSON)

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

Port Configuration: 48x 25GbE SFP ports (supports 1G/10G/25G), 8x 100GbE QSFP28 ports (supports 40G/100G)
- Switching Capacity: 2.4 Tbps throughput, 2 billion packets per second forwarding rate
- Encryption: Line-rate AES-256-GCM MACsec encryption on all ports
- Routing Table: Over 256K IPv4/IPv6 routes (large route table variant), MPLS and VXLAN support
- Packet Buffer: 8GB deep packet buffer with Virtual Output Queuing (VOQ) architecture
- Security: Secure Boot enabled, uRPF, ACLs, CoPP, AAA, Dot1X
- Management: Arista EOS operating system, CLI, Web GUI, SNMP, NETCONF, RESTCONF, CloudVision integration
- Layer 2/3 Features: VXLAN, EVPN, Segment Routing, MPLS (LDP, RSVP-TE), BGP, OSPF, IS-IS, 512-way ECMP
- Timing: IEEE 1588v2 PTP, Synchronous Ethernet (SyncE)
- Telemetry: Accelerated sFlow, LANZ, DANZ, INT, IPFIX, Advanced Event Management
- Redundancy: Dual hot-swappable AC power supplies (1+1), N+1 hot-swappable fans
- Airflow: Front-to-rear (port side to fan side), indicated by -F suffix
- Form Factor: 1RU rack-mountable
- Typical Power Consumption: Approximately 300-350W (measured at 25°C ambient with 50% port load, excludes transceivers)
- Operating Temperature: 0°C to 45°C (certain airflow configurations or higher power optics may reduce maximum temperature)
- Dimensions: Standard 1RU - 1.73 x 17.5 x 20.5 inches (44 x 445 x 521 mm)

FAQs

Q: What is the difference between the MK variant and the standard K variant?
A: The 'M' designates MACsec encryption capability with line-rate AES-256-GCM encryption on all ports. The 'K' indicates large route table support (over 256K routes). The 'S' suffix indicates Secure Boot is enabled for enhanced firmware security. This variant combines all three features for maximum security and routing scale.

Q: What routing table profiles are supported on this model?
A: The DCS-7280SR3MK-48YC8A-S-F supports the L3-Host-XL profile with over 256K IPv4 and IPv6 routes, MPLS, and VXLAN. This large route table capacity is specifically designed for internet peering, carrier edge, and large-scale data center spine applications requiring full internet routing table support.

Q: Is this switch compatible with existing 7280R or 7280R2 deployments?
A: Yes, the 7280R3 Series runs the same Arista EOS operating system and supports the same management tools (CloudVision, ZTP, eAPI) as previous generations. However, the 7280R3 uses Broadcom Jericho2 silicon with enhanced features including deeper buffers, higher route scale, and improved encryption capabilities.

Q: What transceivers are supported in the SFP and QSFP ports?
A: The 48x SFP ports support 1G, 10G, and 25G transceivers (SFP, SFP+, SFP28). The 8x QSFP28 ports support 40G and 100G optics and can break out to 4x 10G or 4x 25G. All ports support MACsec encryption. Refer to the Arista transceiver compatibility matrix for specific optic part numbers and EOS release requirements.

Q: Does this switch require any software licenses for full functionality?
A: Arista switches ship with full EOS feature functionality enabled without additional feature licenses. CloudVision subscription is optional for centralized management and analytics. MACsec encryption, routing protocols, VXLAN, and all documented features are available in the base EOS software.

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