• Silver-colored arista dcs-7388x5-sc switch card with green-lit slots and 8 module slots in a 4ru server rack
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Arista

Arista DCS-7388X5-SC | 7388X5 Switch Card, 25.6Tbps, 8 Module Slots, 4RU

DCS-7388X5-SC

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Description

The Arista DCS-7388X5-SC is the switch card for the 7388X5 Series modular data center switch platform, designed for high-performance leaf and spine deployments. This 4RU system delivers 25.6Tbps of switching capacity and 10.66 Bpps forwarding rate across 8 interface module slots, supporting up to 64 ports of 400GbE, 128 ports of 200GbE, or 128 ports of 100GbE. The switch card includes integrated fans and power supply support, enabling flexible configurations with hot-swappable components for maximum uptime in hyperscale cloud environments.

Features

25.6 Tbps non-blocking switching fabric with single packet processor architecture
- 8 interface module slots with 3.2 Tbps bandwidth per slot
- Ultra-low latency: 825ns port-to-port in cut-through mode
- 114 MB shared packet buffer for superior burst absorption
- Wire-speed Layer 2 and Layer 3 forwarding for leaf and spine deployments
- Support for 100G/200G/400G QSFP-DD optics and direct attach cables
- Hot-swappable design with integrated fan and power supply support
- Up to 4 redundant AC or DC power supplies for grid and PSU redundancy
- Quad-core x86 CPU with 32 GB DRAM for management functions
- Arista EOS with advanced traffic awareness and congestion handling
- Arista LANZ (Latency Analyzer) for real-time micro-burst monitoring
- VXLAN hardware acceleration with wire-speed gateway capabilities
- BGP-EVPN support for modern VXLAN fabrics (with FLX-Lite license)
- Advanced telemetry with buffer monitoring and in-band path analysis
- CloudVision integration for network-wide automation and visibility
- Front-to-rear airflow design optimized for data center cooling
- Field-replaceable module with swing-arm release mechanism
- Compatible with Arista 7388 chassis for flexible configurations

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

System Capacity: 25.6 Tbps full-duplex
- Forwarding Rate: Up to 10.66 Bpps
- Form Factor: 4RU modular chassis system
- Module Slots: 8 interface module slots
- Slot Bandwidth: 3.2 Tbps per I/O slot
- Maximum Port Density: Up to 64x 400GbE, 128x 200GbE, or 128x 100GbE
- Packet Buffer: 114 MB shared buffer
- Latency: As low as 825ns (cut-through mode)
- CPU: Quad-core x86 processor
- Memory: 32 GB DRAM
- Management Module: Runs Arista EOS
- Power Supply Support: Up to 4 hot-swappable AC or DC PSUs
- Airflow: Front-to-rear cooling with high-performance fan modules
- Architecture: Single high-capacity packet processor
- Supported Optics: 10G to 400G QSFP-DD pluggable transceivers

FAQs

Q: What is the DCS-7388X5-SC and how does it function?
A: The DCS-7388X5-SC is the switch card module that forms the core of the Arista 7388X5 modular chassis system. It provides 25.6Tbps of switching fabric capacity distributed across 8 interface module slots at 3.2Tbps per slot, along with integrated fan and power supply support. The switch card is hot-swappable and accessible from the rear of the chassis for easy maintenance.

Q: What interface modules are compatible with the 7388X5-SC?
A: The switch card supports various Arista 7388-series line cards including the DCS-7388-8D (8-port 400GbE QSFP-DD with MACsec) and DCS-7388-16CD (16-port 200GbE QSFP-DD). Each module slot receives 3.2Tbps of non-blocking bandwidth, enabling flexible port configurations from 100G to 400G.

Q: What deployment scenarios is the 7388X5-SC designed for?
A: The 7388X5-SC is engineered for hyperscale data center leaf and spine architectures, supporting scale-out designs from simple two-way configurations up to 256-way topologies. With ultra-low latency (825ns), large shared buffers, and support for VXLAN/EVPN, it excels in high-density cloud and AI/ML workloads requiring 200G and 400G connectivity.

Q: What software and licensing does the 7388X5-SC require?
A: The switch card runs Arista EOS (Extensible Operating System) with base Layer 2 and Layer 3 features included. Advanced routing features require the EOS Enhanced license, while BGP-EVPN and VXLAN capabilities need the EOS Flex-route (FLX) Lite license. CloudVision is available as a subscription for advanced automation and visibility.

Q: How is the 7388X5-SC maintained and replaced?
A: The switch card is field-replaceable and accessible from the rear of the chassis. It features lock-levers and a swing-arm release handle for controlled insertion and removal. The module can include fans and power supplies, and all components are hot-swappable to maintain network uptime during maintenance operations.

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