• Gray metal arista dcs-7280cr3ak-32s-flx-f network switch with multiple ports and ventilation slots on back side
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Arista

Arista DCS-7280CR3AK-32S-FLX-F | 7280R3A 28-Port 100G Switch, 2x 400G, FLX License

DCS-7280CR3AK-32S-FLX-F

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Description

The Arista DCS-7280CR3AK-32S-FLX-F is a high-performance 1RU data center switch router delivering 3.6 Tbps throughput and 1.35 billion packets per second. Featuring 28x 100GbE QSFP100/200 ports and 2x 400GbE QSFP-DD uplinks, it supports large-scale routing with over 256K routes, MPLS, VXLAN, and enhanced MACsec encryption on all ports. The FLX license tier enables full routing protocols (OSPF, ISIS, BGP, PIM) with up to 2M routes, advanced MPLS-LER/LSR, segment routing, and algorithmic ACLs. Front-to-rear airflow and dual AC power supplies ensure reliable operation in demanding data center environments.

Features

FlexRoute engine with scalable routing up to 2M IPv4/IPv6 routes
- Enhanced TunnelSec: Line-rate AES-256-GCM encryption on all ports (MACsec, IPsec, VXLANsec)
- Full Layer 3 routing protocols: BGP, OSPF, ISIS, PIM, Multicast
- MPLS capabilities: LDP, RSVP-TE, Segment Routing with traffic engineering and fast reroute
- EVPN and VXLAN for network virtualization and overlay services
- Algorithmic ACLs for high-scale access control and policy-based forwarding (>24K ACL entries)
- Multi-Chassis Link Aggregation (MLAG) for active-active Layer 2 redundancy
- Accelerated sFlow and IPFIX for network telemetry and monitoring
- Inband Network Telemetry (INT) for real-time flow visibility
- Precision Time Protocol (PTP) IEEE 1588v2 and Synchronous Ethernet (SyncE) with OCXO
- Quality of Service (QoS): Hierarchical QoS, ingress policing, flexible rewrite, shaping
- IPv4/IPv6 VPNs, 6PE/6VPE, L2/L3 EVPN, EVPN-VPWS, VPLS, pseudowires
- 4096 VLAN support with advanced Layer 2 features
- Virtual Routing and Forwarding (VRF) for network segmentation
- Zero Touch Provisioning (ZTP) and CloudVision integration for automation
- Hot-swappable redundant power supplies and fans with N+1 redundancy
- Arista EOS with stateful switchover and in-service software upgrades
- LANZ (Latency Analyzer) for real-time congestion detection
- DANZ (Data Analyzer) for advanced traffic mirroring and network visibility

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

Ports: 30x QSFP100/200 (28x 100GbE main ports), 2x QSFP200/QSFP-DD uplinks (up to 400G each)
- Maximum Port Configurations: 2x 400G, 36x 100G, 18x 200G, or 56x 25/10G with breakouts
- Switching Capacity: 3.6 Tbps (7.2 Tbps full-duplex)
- Forwarding Rate: 1.35 Bpps (billion packets per second)
- Latency: From 3.8 microseconds
- CPU: Eight-Core x86 processor
- Memory: 64 GB system memory
- Packet Buffer: 4 GB deep buffer memory
- Encryption: AES-256-GCM MACsec on all ports (Enhanced TunnelSec)
- Routing Table: Large route scale - up to 2M routes with FLX license (over 256K base)
- Timing: IEEE 1588v2 PTP and Synchronous EthernetPrecision timing with OCXO and PPS/10M/ToD inputs
- Power Supply: 2x hot-swappable AC power supplies (1+1 redundancy)
- Airflow: Front-to-rear (port side to fan side)
- Form Factor: 1RU rack-mountable
- Management: Arista EOS with CLI, REST API, SNMP, NetConf, OpenConfig
- Operating System: Arista EOS (Extensible Operating System)

FAQs

Q: What does the FLX license include on this model?
A: The FLX license provides full Layer 3 routing with up to 2M routes, advanced routing protocols (OSPF, ISIS, BGP, PIM), EVPN, VXLAN, segment routing (SR), advanced MPLS-LER/LSR capabilities with traffic engineering and link/node protection, and algorithmic ACLs with over 24K ACL entries. This is Arista's most comprehensive license tier for data center and service provider deployments.

Q: What is the difference between the 7280CR3AK-32S-FLX-F and the base 7280CR3A-32S-F?
A: The 'K' suffix adds large-scale routing support (up to 2M vs 256K routes) and enhanced MACsec encryption on all ports. The 'FLX' suffix includes the advanced FLX license tier with full routing protocols and MPLS capabilities. The base model has standard routing scale without encryption hardware.

Q: Can this switch support 400G optics on all ports?
A: The 30 main QSFP100/200 ports support up to 200G per port, while the 2 QSFP-DD uplink ports support up to 400G each. The main ports can run 100G or 200G, and can break out to 50G, 25G, or 10G. Only the 2 uplink ports support full 400G operation.

Q: What are typical use cases for this switch?
A: Ideal for data center spine/leaf architectures, high-performance computing clusters, AI/ML workloads, internet peering, data center interconnect (DCI), MPLS service provider edge, EVPN-VXLAN fabrics, and secure wide-area connectivity requiring line-rate encryption. The large routing table and deep buffers make it suitable for internet gateway and border applications.

Q: Is this switch compatible with multi-vendor environments?
A: Yes, the switch runs Arista EOS which is standards-based and interoperates with multi-vendor networks using standard protocols (BGP, OSPF, ISIS, VXLAN, EVPN, MPLS, IEEE 802.1AE MACsec). It supports open APIs (REST, NetConf, OpenConfig) and integrates with third-party network management systems, SDN controllers, and automation tools.

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