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

Arista DCS-7388-8DR | 7388X5 8-Port 400G QSFP-DD Expansion Module, 39W

DCS-7388-8DR

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Description

The Arista DCS-7388-8DR is an expansion module designed for the 7388X5 Series modular data center switches. This 8-port 400 Gigabit Ethernet QSFP-DD line card delivers high-density 400G connectivity for hyperscale cloud, AI, and machine learning environments. With 39W power consumption and hot-swappable design, it provides flexible expansion for data-intensive workloads requiring consistent low latency and wire-speed layer 2 and layer 3 forwarding.

Features

8 x 400 Gigabit Ethernet QSFP-DD ports for ultra-high-density connectivity
- Wire-speed layer 2 switching and layer 3 routing performance
- Built on 25.6Tbps single-chip packet processor architecture
- Ultra-low latency forwarding optimized for AI/ML and HPC workloads
- Hot-swappable design for zero-downtime field installation and replacement
- Integrated with Arista EOS for advanced programmability and automation
- Support for advanced traffic management and congestion control
- Deep packet buffers for handling micro-burst traffic
- Comprehensive network visibility and telemetry with built-in instrumentation
- Energy-efficient design with 39W typical power consumption
- Compatible with industry-standard 400G QSFP-DD optics and cables
- Support for VXLAN, EVPN, and modern overlay networking protocols
- Hardware-accelerated encryption capabilities (model-dependent)
- Precision timing and synchronization with PTP/IEEE 1588v2
- Comprehensive SNMP, REST API, and streaming telemetry 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

Port Configuration: 8 x 400GbE QSFP-DD ports
- Form Factor: Plug-in line card module for Arista 7388X5 Series chassis
- Data Rate: 400 Gbps per port
- Power Consumption: 39W typical operating power
- Chassis Compatibility: Arista 7388X Series modular switches (DCS-7388-CH chassis)
- Hot-Swappable: Yes, supports field installation without chassis power down
- Switching Architecture: Built on 25.6Tbps packet processor
- Forwarding Performance: Wire-speed layer 2 and layer 3 forwarding
- Latency: Ultra-low latency optimized for data center applications
- Interface Standard: IEEE 802.3 400GBASE compliant QSFP-DD

FAQs

Q: Which chassis models is the DCS-7388-8DR compatible with?
A: The DCS-7388-8DR expansion module is designed for use in Arista 7388X5 Series modular chassis systems. The 7388 chassis supports up to 8 line card slots plus 1 supervisor slot, allowing flexible configurations for high-density 400G deployments.

Q: What is the difference between DCS-7388-8DR and DCS-7388-8DR#?
A: The DCS-7388-8DR is the spare line card module ordered separately for field installation. The DCS-7388-8DR# variant ships pre-installed in a new chassis system. Both modules have identical technical specifications and functionality.

Q: What transceiver types are supported on the 400G QSFP-DD ports?
A: The DCS-7388-8DR supports industry-standard 400G QSFP-DD transceivers including 400GBASE-DR4, 400GBASE-FR4, 400GBASE-LR4, and 400G DAC/AOC cables. Arista-qualified optics are recommended for full feature support and warranty coverage.

Q: Can I mix different line card modules in the same 7388X5 chassis?
A: Yes, the 7388X5 chassis supports flexible configurations with different line card types including the DCS-7388-8DR (8x400G) and DCS-7388-16CD2 (16x200G) modules. All modules share the common 25.6Tbps switching fabric and Arista EOS software features.

Q: Does the DCS-7388-8DR require separate licensing?
A: The 7388X5 Series requires the appropriate CloudVision and EOS feature licenses at the chassis level. The line cards themselves do not require individual port licenses. Contact your Arista representative for specific licensing requirements based on your deployment features.

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