• Silver-colored arista dcs-7388-8d server rack with multiple vertical slots housing green-lit 8-port 400gbe qsfp-dd modules
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Arista

Arista DCS-7388-8D | 7388X5 8-Port 400GbE QSFP-DD Module with MACsec

DCS-7388-8D

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Description

The Arista DCS-7388-8D is an expansion module designed for the Arista 7388X5 Series modular data center switches, providing 8 ports of 400GbE connectivity via QSFP-DD interfaces with MACsec encryption. This high-density line card delivers 3.2Tbps of forwarding capacity and supports flexible port configurations including 16x200G, 32x100G, 8x40G, 32x25G, and 32x10G for scalable hyperscale cloud, AI, and machine learning deployments. Purpose-built for demanding data center environments, the module integrates seamlessly into the 7388X5 4RU chassis platform.

Features

MACsec hardware encryption for secure Layer 2 data transmission
- Multi-speed flexibility supporting 10G through 400G interfaces
- QSFP-DD interface standard for high-density connectivity
- Hot-swappable design enables non-disruptive maintenance and upgrades
- Integrated with Arista EOS for advanced traffic management and telemetry
- Low latency forwarding optimized for AI/ML and high-frequency trading applications
- Compatible with comprehensive Arista transceiver and cable portfolio
- Front-to-rear or rear-to-front airflow options to match chassis configuration
- Advanced buffer management with shared packet buffer architecture
- Deep packet inspection and programmable pipeline capabilities
- Support for VXLAN, EVPN, and modern overlay networking protocols
- Consistent hardware and software platform with fixed Arista 7060X/7260X Series

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

Form Factor: Line card expansion module for Arista 7388X5 Series chassis
- Port Configuration: 8x 400GbE QSFP-DD ports
- Supported Breakout Configurations: 16x200G, 32x100G, 8x40G, 32x25G, 32x10G
- Per-Module Bandwidth: 3.2Tbps forwarding capacity
- Security: MACsec encryption support for secure data transmission
- Interface Type: QSFP-DD (Quad Small Form-factor Pluggable - Double Density)
- Compatibility: Arista 7388X5 Series modular switches
- Power Consumption: 39W typical operational power (excluding optics)
- Hot-Swappable: Field-replaceable module with front-panel access
- Management: Integrated with Arista EOS for unified configuration and monitoring

FAQs

Q: What chassis is the DCS-7388-8D compatible with?
A: The DCS-7388-8D module is specifically designed for the Arista 7388X5 Series modular data center switches, which feature a 4RU chassis with 8 line card slots and a single 25.6Tbps packet processor.

Q: Can this module support lower-speed interfaces?
A: Yes, the DCS-7388-8D supports flexible port breakout configurations, allowing each 400GbE port to be configured as 2x200G, 4x100G, 1x40G, 4x25G, or 4x10G connections, providing deployment flexibility for mixed-speed environments.

Q: What is MACsec and why is it important?
A: MACsec (Media Access Control Security) is a Layer 2 encryption standard that provides secure point-to-point data transmission. This module's MACsec support enables encrypted communication between network devices, essential for protecting sensitive data in multi-tenant cloud environments and financial services networks.

Q: How many of these modules can be installed in a 7388X5 chassis?
A: The Arista 7388X5 chassis supports up to 8 line card modules. A fully populated system with 8x DCS-7388-8D modules delivers 64 ports of 400GbE, 128 ports of 200GbE, or up to 256 ports of 100GbE connectivity.

Q: What transceivers are supported by this module?
A: The DCS-7388-8D supports a wide range of QSFP-DD transceivers including 400G-DR4, 400G-FR4, 400G-LR8, and various DAC/AOC cables. It also supports 200G, 100G, 40G, 25G, and 10G optics via appropriate breakout configurations. Consult Arista's transceiver compatibility matrix for specific part numbers and EOS version requirements.

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