Cisco QSFP40G BiDi Short-reach Transceiver

Introducing the Cisco QSFP40G BiDi Short-reach Transceiver — a high-density, hot-swappable 40GBASE-X module engineered for data networking and optical networks. This BiDi transceiver delivers reliable 40 Gbps performance over duplex multimode fiber, enabling efficient, scalable connectivity for data centers, enterprise campuses, and telecom edge deployments. Built for ease of integration with Cisco switches and select third-party devices, it maximizes cable efficiency, minimizes footprint, and supports rapid deployment without compromising reliability or uptime.

• High-density 40GBASE-X capability for scalable data center networks, delivering consistent 40 Gbps Ethernet over short-reach links with low latency and minimal packet loss.
• Bidirectional BiDi technology over duplex multimode fiber using a single fiber pair, reducing fiber plant complexity and simplifying patching while preserving full-duplex performance.
• 1 x LC duplex optical interface paired with 50 µm multimode fiber, optimized for short-reach intra-data-center connectivity and quick, trouble-free deployments.
• Hot-swappable QSFP form factor that plugs into compatible switches and routers without powering down the host device, ensuring maximum uptime and operational efficiency.
• Compatibility with Cisco devices and select third-party platforms that support 40GBASE-X, making it an excellent choice for mixed-vendor environments and gradual network upgrades.

Technical Details of Cisco QSFP40G BiDi Short-reach Transceiver

• Connector: 1 x LC duplex
• Fiber Type: Multi-mode optical fiber, 50 µm core
• Operational Mode: Bidirectional BiDi over duplex MMF
• Data Rate: 40 Gbps (40 Gigabit Ethernet)
• Standard: 40GBASE-X family
• Form Factor: QSFP (Quad Small Form-factor Pluggable)
• Distance Capability: Short-reach applications within data centers and campus networks
• Hot-swappable: Yes, designed for field replacement without powering down the host device
• Compatibility: Optimized for Cisco devices and select third-party systems that support 40GBASE-X

How to Install Cisco QSFP40G BiDi Short-reach Transceiver

• Power down the host device only if required by your maintenance policy, and prepare the port for replacement or insertion.
• Verify that the destination switch or router supports 40GBASE-X BiDi transceivers and that the port is configured for 40G operation.
• Remove any existing module from the QSFP port and handle the new transceiver by its edges to avoid touching the connector.
• Insert the Cisco QSFP40G BiDi Short-reach Transceiver firmly into the QSFP port until it seats with a click, then secure any retention mechanisms if present.
• Connect the LC duplex multichannel fiber pair to the transceiver, ensuring proper polarity and alignment for transmit and receive paths.
• Power up the device or revert to normal operation, then verify link status and negotiate the 40GBASE-X connection on both ends.
• Run basic connectivity tests (ping, throughput tests, and link verification) to confirm stable 40 Gbps performance over the BiDi link.
• Document the installation details, including port, fiber type, length, and any observed performance characteristics for future maintenance.

Frequently asked questions

• Q: What is the Cisco QSFP40G BiDi Short-reach Transceiver best used for? A: It is designed for short-reach 40 Gigabit Ethernet connections over duplex multimode fiber, ideal for data centers, campus networks, and edge deployments where high density and reduced fiber counts are beneficial.
• Q: What does BiDi mean in this context? A: BiDi (bidirectional) technology transmits and receives signals over a single fiber pair using separate wavelengths, enabling two-way communication without the need for two separate fibers.
• Q: Which fiber type and connector does it use? A: It uses 50 µm multimode optical fiber with an LC duplex connector, optimized for compact, high-density installations.
• Q: Is this module hot-swappable? A: Yes. The QSFP40G BiDi transceiver is designed to be hot-swappable, allowing replacement or upgrades without powering down the host device in many environments.
• Q: Is it compatible with non-Cisco devices? A: It is designed to work with Cisco devices and select third-party platforms that support 40GBASE-X; always verify vendor support and interoperability before deployment.
• Q: How do I verify the link after installation? A: After insertion, check the port LED status for link up, confirm 40G mode, and perform basic connectivity tests like throughput and latency checks to ensure proper operation.