Arista QSFP-40G-SRBD-Arista | 40G QSFP+ Transceiver, BiDi Multi-Mode, 150m LC

Q: What is the key benefit of the QSFP-40G-SRBD over standard SR4 transceivers?
A: The QSFP-40G-SRBD uses bidirectional optics to transmit 40Gb/s over duplex LC fiber (2 strands), compared to SR4 transceivers which require 8 strands of parallel fiber. This allows you to reuse existing 10G duplex fiber infrastructure for 40GbE deployment without costly cabling upgrades.

Q: Is this transceiver compatible with existing OM3 and OM4 fiber installations?
A: Yes, the QSFP-40G-SRBD supports both OM3 and OM4 multimode fiber. It delivers up to 100 meters reach over OM3 and up to 150 meters over OM4, making it ideal for typical data center intra-rack and inter-rack connections.

Q: Can this module be used in breakout configurations for 4x10G?
A: No, the QSFP-40G-SRBD is designed for 40GbE point-to-point links only over duplex LC fiber. For 4x10G breakout over multimode fiber, you would need a QSFP-40G-SR4 transceiver with MTP/MPO connector and appropriate breakout cabling.

Q: What platforms support the QSFP-40G-SRBD transceiver?
A: The QSFP-40G-SRBD is supported on all Arista switches with QSFP+ ports. Compatibility is ensured through proper EEPROM encoding. Always verify compatibility with your specific platform and EOS software version using Arista's Transceiver and Cable Compatibility Guide.

Q: Does this transceiver include Digital Optical Monitoring?
A: Yes, the QSFP-40G-SRBD includes Digital Optical Monitoring (DOM) functionality, allowing you to monitor real-time optical parameters such as transmit/receive power, temperature, voltage, and laser bias current via the 2-wire serial interface.