Arista QDD-200G-2LR4-Arista | 200GBASE-2LR4 QSFP-DD Transceiver, 10km, Dual LC

Q: What is the maximum transmission distance for the QDD-200G-2LR4?
A: The QDD-200G-2LR4 supports transmission distances up to 10km over single-mode fiber using dual LC duplex connectors, making it ideal for campus and data centre interconnects.

Q: Can this transceiver interoperate with existing 100G infrastructure?
A: Yes, the QDD-200G-2LR4 provides optical interoperability with 100GBASE-LR4 QSFP modules, allowing flexible migration from 100G to 200G networks without replacing existing cabling infrastructure.

Q: What is the difference between QSFP-DD and standard QSFP form factors?
A: QSFP-DD (Double Density) provides higher port density and supports doubled electrical lanes compared to standard QSFP, enabling 200G and 400G data rates in the same physical footprint with backward compatibility to lower-speed modules.

Q: Does this transceiver support Digital Diagnostics Monitoring?
A: Yes, the QDD-200G-2LR4 includes full DOM/DDM support, enabling real-time monitoring of voltage, temperature, laser bias current, transmit power, and receive power for proactive network management.

Q: What Arista platforms support the QDD-200G-2LR4?
A: This transceiver is compatible with Arista switches that feature QSFP-DD ports and support 200G operation. Consult Arista's official Transceiver and Cable Guide for specific platform compatibility and configuration requirements.