Juniper Networks JNP-QSFP-DAC-1MA to Brocade (Formerly) 40G-QSFP-QSFP-C-0101 Comp TAA 40GBase-CU QSFP+ to QSFP+ DAC (Active Twinax, 1m)

This page showcases the Juniper Networks JNP-QSFP-DAC-1MA to Brocade (Formerly) 40G-QSFP-QSFP-C-0101 direct attach copper cable, an active twinax 40GBase-CU solution designed for high-density data centers. Engineered for reliability and interoperability, this 1-meter QSFP+ to QSFP+ DAC provides a plug-and-play path to high-speed server-to-switch or switch-to-switch connectivity, delivering consistent 40 Gbps performance across a wide range of vendor ecosystems. The cable is engineered to meet demanding data center requirements with robust electrical performance, stable signaling, and a serialization scheme that supports cross-vendor deployments, making it an attractive choice for enterprise networks, cloud environments, and colocation facilities.

• High-speed 40G DAC connection: This active twinax Direct Attach Copper (DAC) cable delivers 40 Gbps performance over a 1-meter link, ideal for short-reach intra-rack or inter-switch deployments. Its 40GBase-CU signaling is engineered to minimize jitter and maintain robust eye diagrams at typical data center operating temperatures, helping ensure reliable interconnects between QSFP+ ports in modern data center fabrics.
• 1.0-meter reach with optimal routing flexibility: At a 1-meter (3.3 ft) length, the cable optimizes cabling density within racks, minimizes bulk in patch panels, and reduces rack footprint while maintaining strong signal integrity. The short reach is perfect for top-of-rack or leaf-spine topologies where QSFP+ ports sit in close proximity, enabling clean and organized cabling layouts.
• 100% Juniper to Brocade compatibility (Formerly) with unique serialization: The DAC is designed for seamless interoperability across vendors, specifically compatible from Juniper Networks to Brocade (Formerly) hardware. It is programmed with unique serialization to support asset management, warranty validation, and authenticity verification, helping data centers maintain precise hardware records and simplify lifecycle management.
• Active design for enhanced signal integrity: As an active twinax cable, it incorporates integrated electronics that help preserve signal quality across the 1-meter link, mitigating issues related to copper cabling such as loss, crosstalk, and reflection. This translates to more stable link establishment, lower error rates, and reliable performance in densely populated data centers where short-distance, high-speed interconnects are common.
• OEM-friendly, cost-conscious choice with TAA compliance: This DAC is dual OEM compatible and TAA-compliant, offering a cost-efficient alternative to branded optics without sacrificing performance or reliability. It’s designed to reduce total cost of ownership while delivering enterprise-grade functionality suitable for mission-critical workloads and virtualization-heavy environments.

Technical Details of [product]

• Interface/Connectors: QSFP+ to QSFP+ on both ends
• Cable Type: Active Direct Attach Copper (DAC) / Twinax
• Reach: 1.0 meter (3.3 feet)
• Data Rate: 40 Gbps (40GBase-CU)
• Compliance: TAA compliant
• Compatibility: 100% Juniper Networks to Brocade (Formerly) compatibility with unique serialization for asset tracking
• OEM Status: Dual OEM compatible
• Application: Short-reach interconnects between QSFP+ ports in data centers, cloud networks, and high-density switch configurations

How to install [product]

• Power down or place the connected devices in a low-power state, then locate the QSFP+ ports intended for the connection.
• Align and insert the DAC into the QSFP+ ports on each device until the connectors click into place securely.
• Power the devices back up and verify link status lights or management dashboards to confirm a successful connection.
• Ensure the cabling path avoids sharp bends and maintains proper bend radius for copper cables to preserve signal integrity.
• Verify connectivity with a basic traffic test or vendor-recommended diagnostic tool to confirm throughput and stability before deploying into production.

Frequently asked questions

• What is the reach of this DAC? The cable supports up to 1.0 meter (3.3 feet) between QSFP+ ports.
• Is this cable compatible with both Juniper and Brocade devices? Yes. It is designed for 100% Juniper Networks to Brocade (Formerly) compatibility and uses unique serialization for asset management.
• What speed does it support? It supports 40 Gbps (40GBase-CU) across QSFP+ ports.
• Is the cable active or passive? It is an active Twinax DAC, designed to maintain signal integrity over the specified reach.
• Is it compliant with trade and procurement standards? Yes, it is TAA compliant and suitable for enterprise procurement requirements.