• 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 400G QSFP-DD Line Card, MACsec

DCS-7388-8D

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Description

The 7388X5 8-port 400G QSFP-DD line card is an interface module for the Arista 7388 modular chassis. It suits leaf or spine roles in hyperscale cloud, AI/ML cluster and large data centre networks that need 400G density together with link-layer MACsec encryption.

Each module provides 8 QSFP-DD ports, supporting up to 8 x 400G, 16 x 200G or 32 x 100G, with 40G, 25G and 10G speeds also available through the standard optics and cables. The module connects directly to the 7388X5 switch card with no oversubscription, giving 3.2 Tbps per slot. Hardware MACsec encryption is available on all 8 ports, which is what separates this SKU from the DCS-7388-8DR without MACsec and from the DCS-7388-16CD2 with 16 x 200G QSFP56 ports. Typical power draw is 142W, with a maximum of 161W, supplied by the chassis.

The module requires the DCS-7388-CH chassis with a DCS-7388-SUP supervisor and DCS-7388X5-SC switch card, running EOS 4.29.1 or later. MACsec use is enabled with the LIC-FIX-4-MACSEC licence, which is a separate Arista EOS licence for Fixed Group 4.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Hardware MACsec encryption on all 8 QSFP-DD ports
- Mix-and-match I/O modules in the 7388 chassis, which has 8 module slots
- Direct connection to the switch card with no oversubscription
- Field-removable, hot-serviceable modular design
- Supports existing 400G optics and cables, plus 100G and 200G breakout speeds
- Latency from 825 ns and a 114 MB shared packet buffer on the 7388X5 system
- Runs Arista EOS with CloudVision, LANZ, ZTP, DANZ and AI Analyzer 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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specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Part number: DCS-7388-8D
- Ports: 8 x QSFP-DD
- Maximum 400G ports: 8
- Maximum 200G ports: 16
- Maximum 100G ports: 32
- Maximum 40G ports: 8
- Maximum 25G ports: 32
- Maximum 10G ports: 32
- MACsec encryption: Yes
- Typical (maximum) power: 142W (161W)
- Module capacity per slot: 3.2 Tbps (switch card to each I/O slot)
- Dimensions (HxWxD) excluding ejector: 16.9 x 4.95 x 10.7 cm (6.7 x 1.95 x 4.21 in)
- Weight: approx. 0.90 kg (2 lbs)
- Chassis support: DCS-7388-CH
- Minimum EOS: 4.29.1
- Operating temperature (system): 0 to 40 C (32 to 104 F)
- Storage temperature (system): -40 to 70 C (-40 to 158 F)
- Relative humidity (system): 5 to 95%
- Operating altitude (system): 0 to 3,000 m (10,000 ft)

FAQs

Q: Does MACsec need a separate licence?
A: Yes. MACsec use requires the LIC-FIX-4-MACSEC licence, the MACSEC Encryption License for Group 4 Fixed switches. Arista EOS feature licences for this platform are Fixed Group 4.

Q: Which chassis and software does this module need?
A: It requires the DCS-7388-CH chassis with a DCS-7388-SUP supervisor and DCS-7388X5-SC switch card. The minimum software release is EOS 4.29.1.

Q: How much power does the module draw?
A: A typical draw of 142W and a maximum of 161W per module, supplied by the chassis. The chassis takes up to 4 x PWR-2421-HV-RED 2400W AC/DC supplies in N+N redundancy.

Q: What speeds can the QSFP-DD ports run?
A: Each module supports up to 8 x 400G, 16 x 200G or 32 x 100G, with 40G, 25G and 10G also available. Supported pluggable optics and cables are listed on the Arista transceivers and cables page.

Q: How does this differ from the DCS-7388-8DR and DCS-7388-16CD2?
A: The DCS-7388-8D has 8 x 400G QSFP-DD ports with MACsec. The DCS-7388-8DR has no MACsec, and the DCS-7388-16CD2 provides 16 x 200G QSFP56 ports.

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