QSFP-40G-SR-BDAccessories

The Cisco QSFP-40G-SR-BD is a high-performance 40GBASE-SR-BiDi (bidirectional) QSFP+ transceiver designed to deliver 40 Gigabit Ethernet connectivity over standard duplex multimode fiber (MMF) cabling. By utilizing BiDi technology, this module allows data transmission in both directions over a single pair of fibers, reducing cabling complexity and costs while enabling seamless network upgrades from 10G to 40G.

Ideal for modern data centers, cloud infrastructure, and enterprise networks, the QSFP-40G-SR-BD supports up to 100 meters over OM3 and 150 meters over OM4 fiber, making it a flexible and scalable choice for short-reach, high-speed connections. The transceiver uses the QSFP+ form factor and is fully hot-swappable, allowing for quick installation, replacement, or upgrades without service interruption.

The module is compatible with a wide range of Cisco switches and routers, delivering reliable, high-bandwidth performance and supporting backward-compatible 10G breakout configurations for flexible deployment.

🔧 Technical Specifications

General Features:

• Model: Cisco QSFP-40G-SR-BD

• Product Type: QSFP+ 40GBASE-SR BiDi Transceiver

• Form Factor: QSFP+ (Quad Small Form-Factor Pluggable Plus)

• Interface Type: LC Duplex (MMF)

• Wavelength: 832–918 nm (bi-directional transmission)

Performance:

• Data Rate: 40 Gbps (40 Gigabit Ethernet)

• Reach:

  • Up to 100 m on OM3 MMF

  • Up to 150 m on OM4 MMF

• Fiber Type: Multimode (MMF)

• Transceiver Technology: BiDi (Bidirectional)

• Backward Compatibility: Supports 4x10G breakout cables

Physical & Environmental:

• Hot-swappable: Yes

• Operating Temperature: 0°C to 70°C (32°F to 158°F)

• Connector Type: LC Duplex

• Compliance: IEEE 802.3ba, SFF-8436, RoHS

Compatibility:

• Compatible with Cisco Nexus, Catalyst, and MDS switches and routers

• Multi-vendor interoperability with devices supporting QSFP+

🌐 Use Cases

• Data center spine-leaf interconnects

• High-speed aggregation or access layer uplinks

• 10G-to-40G migration with existing MMF cabling

• Virtualized and cloud-ready enterprise networks

✅ Why Choose QSFP-40G-SR-BD?

• Cost-Effective Upgrade: Reuse existing 10G duplex fiber for 40G deployments.

• High Performance: 40Gbps full-duplex over a single fiber pair.

• Simplified Cabling: Reduces fiber count and complexity by 50%.

• Future-Ready: Ideal for scalable, high-density data center designs.