• Arista dcs-7280cr3k-32d4a-r gray metal network switch with multiple 100g qsfp28 and 400g qsfp-dd ports and ventilation slots
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Arista

Arista DCS-7280CR3K-32D4A-R | 7280R3 32x 100G QSFP28 Switch, 4x 400G QSFP-DD

DCS-7280CR3K-32D4A-R

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Description

The Arista DCS-7280CR3K-32D4A-R is a high-performance 1RU data center switch router designed for cloud, content delivery, and service provider networks. Featuring 32x 100GbE QSFP28 and 4x 400GbE QSFP-DD ports, it delivers 4.8 Tbps throughput and supports internet-scale routing with flexible FlexRoute profiles up to 5M routes. This rear-to-front airflow model includes dual AC power supplies and 8GB of deep buffer memory for lossless forwarding in demanding environments.

Features

FlexRoute Engine with flexible forwarding profiles for internet-scale routing up to 5M routes
- Deep packet buffer architecture with 8GB VOQ for lossless forwarding and incast handling
- Layer 2: IEEE 802.1Q VLANs, IEEE 802.1ad Q-in-Q, MLAG, LACP, STP/RSTP/MSTP
- Layer 3: BGP, OSPF, IS-IS, EIGRP, static routing, policy-based routing
- MPLS: LDP, RSVP-TE, Segment Routing (SR-MPLS), 6PE/6VPE
- Overlay: VXLAN routing and bridging, EVPN control plane
- QoS: 8 queues per port, DSCP/CoS marking, traffic shaping, strict priority and WRR scheduling
- Security: IEEE 802.1X, ACLs, control plane policing, TACACS+, RADIUS
- Telemetry: Accelerated sFlow, IPFIX, Inband Network Telemetry (INT), streaming telemetry
- Precision Time Protocol (PTP) IEEE 1588-2008 and SyncE for timing synchronization
- Algorithmic ACLs for scalable policy-based forwarding and monitoring
- Hot-swappable redundant power supplies and fans (N+1 fan redundancy)
- Arista EOS with zero-touch provisioning, CloudVision integration, and extensive automation APIs

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

32x 100GbE QSFP28 ports (supports 10G/25G/40G/50G/100G with compatible optics)
- 4x 400GbE QSFP-DD ports (supports 100G/200G/400G)
- Switching Capacity: 4.8 Tbps, 2 Bpps forwarding rate
- System Buffer: 8 GB deep packet buffer with VOQ architecture
- MAC Address Table: 736,000 entries (balanced profile)
- Routing Scale: Up to 5M IPv4 routes with FlexRoute engine (large route profile)
- Latency: As low as 3.8 microseconds
- Form Factor: 1RU, rear-to-front airflow
- Power: Dual hot-swappable 1000W AC power supplies (PWR-1011-AC-BLUE)
- Management: CLI, Web GUI, EOS API, SNMP, NetDB, CloudVision
- Dimensions: 1.75" H x 17.4" W x 20.7" D (1RU)
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- Certifications: NEBS Level 3, CE, FCC, UL

FAQs

Q: What is the difference between the DCS-7280CR3K-32D4A-R and standard 7280CR3 models?
A: The 7280CR3K variant includes enhanced routing scale with support for up to 5M IP routes via flexible forwarding profiles, making it ideal for internet peering, large-scale L3 deployments, and carrier-grade routing applications. The 'A' suffix indicates large route table support with advanced MPLS and VXLAN capabilities.

Q: What does the '-R' airflow designation mean?
A: The '-R' indicates rear-to-front airflow, meaning air flows from the fan side to the port side. This is critical for hot aisle/cold aisle data center deployments. Ensure your rack design matches this airflow direction for proper cooling.

Q: Can this switch support both 100G and 400G ports simultaneously?
A: Yes, the DCS-7280CR3K-32D4A-R supports mixed-speed operation across all ports. The 32x QSFP28 ports can run at 10G/25G/40G/50G/100G, while the 4x QSFP-DD ports support 100G/200G/400G, providing maximum flexibility for migration and mixed-speed environments.

Q: What routing protocols and L3 features are supported?
A: The switch supports comprehensive Layer 3 routing including BGP, OSPF, IS-IS, EIGRP, VRRP, PIM, IGMP, MPLS LDP, RSVP-TE, Segment Routing, EVPN-VXLAN, and full internet routing tables. The FlexRoute engine enables internet-scale BGP deployments.

Q: Is this switch compatible with multi-vendor optics?
A: The DCS-7280CR3K-32D4A-R supports a wide range of Arista-qualified optics and third-party compatible transceivers. Always verify transceiver compatibility with your specific EOS software version and consult Arista's transceiver compatibility matrix for certified modules.

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