• Gray metal arista dcs-7500r3-24d-lc server rack back with multiple 400g qsfp-dd ports and ventilation slots
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Arista

Arista DCS-7500R3-24D-LC | 7500R3 24-Port 400G QSFP-DD Line Card Module

DCS-7500R3-24D-LC

Stock Status: Enquire

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Description

The Arista DCS-7500R3-24D-LC is a high-performance modular line card designed for data center spine and core network deployments. Featuring 24 wire-speed 400GbE QSFP-DD ports with support for multiple speeds from 10G to 400G, this line card delivers 9.6 Tbps throughput per module and leverages Jericho2 packet processors for advanced forwarding and deep buffering. Ideal for large-scale virtualized networks, cloud infrastructures, and internet peering applications requiring maximum port density and flexibility.

Features

Wire-speed Layer 2 and Layer 3 forwarding with non-blocking architecture
- FlexRoute engine for Internet-scale IP routing (up to 1.4M routes; 5M+ on 7500R3K models)
- Virtual Output Queuing (VoQ) with 16 GB deep packet buffer per module
- Support for VXLAN, EVPN, MPLS, Segment Routing, and VPN services
- Algorithmic ACLs for scalable access control and policy-based forwarding
- Accelerated sFlow and IPFIX for real-time network telemetry
- Inband Network Telemetry (INT) for detailed path and quality visibility
- Multi-Chassis Link Aggregation (MLAG) and ECMP for high availability
- Hierarchical QoS with ingress policing and shaping
- Hot-swappable module with front-to-rear airflow
- Compatible with a wide range of QSFP-DD optics, AOC, and DAC cables
- Precision timing and synchronization (PTP/SyncE) support

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

24 x 400GbE QSFP-DD ports (wire-speed)
- Port speed flexibility: 10G, 25G, 40G, 50G, 100G, 200G, 400G per port
- Total throughput: 9.6 Tbps (full-duplex)
- Packet processor: Multiple Jericho2 SoCs, 4.8 Tbps per processor
- Fabric connectivity: 5.6 Tbps per module to fabric modules
- Buffer memory: Up to 16 GB per line card (deep packet buffer with HBM2)
- Virtual Output Queuing (VoQ) architecture for zero head-of-line blocking
- Maximum power consumption: 530-550W (typical/maximum)
- Compatible with 7504N, 7508N, and 7512N chassis platforms
- Hot-swappable module design
- Management: Arista EOS (Extensible Operating System)
- Supports FlexRoute engine for Internet-scale routing (1.4M+ routes)

FAQs

Q: Which Arista chassis is compatible with the DCS-7500R3-24D-LC?
A: The DCS-7500R3-24D-LC is compatible with the Arista 7500R3 Series modular chassis, including the 7504N (4-slot), 7508N (8-slot), and 7512N (12-slot) systems. It requires compatible fabric modules and supervisor modules to operate.

Q: Can I mix this QSFP-DD line card with other 7500R or 7500R2 line cards in the same chassis?
A: Yes, the 7500R3 Series chassis and supervisors support a wide range of line cards including 7500R, 7500R2, and 7500R3 generations. Each generation shares a common architecture with different packet processor capabilities, allowing for flexible migration and investment protection.

Q: What speeds and breakout configurations are supported on the QSFP-DD ports?
A: Each 400G QSFP-DD port supports flexible speeds including 400G, 200G, 100G, 50G, 40G, 25G, and 10G. Breakout modes are transceiver-dependent; for example, ports can be configured as 8x50G or 4x100G when using compatible optics or DAC cables.

Q: What is the typical use case for this line card?
A: The DCS-7500R3-24D-LC is ideal for high-density data center spine networks, universal spine architectures, internet peering, cloud interconnect, and AI/ML workloads requiring ultra-high bandwidth, low latency, and non-blocking forwarding with deep buffers for mixed traffic loads.

Q: Does this line card require special licensing to operate?
A: The DCS-7500R3-24D-LC operates under Arista EOS software licensing. Basic Layer 2/3 features are typically included, while advanced features like FlexRoute, EVPN, MPLS, and large routing tables may require additional software entitlements depending on your EOS license tier.

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