Arista OSFP-400G-SRBD1 | 400G OSFP SR4.2 Transceiver, 100m OM4, MPO-12

Q: What breakout configurations does the OSFP-400G-SRBD1 support?
A: The OSFP-400G-SRBD1 is software configurable for point-to-point 400GE links using 400GBASE-SR4.2, breakout to 4x 100GBASE-BIDI, or breakout to 4x 100GBASE-SR1.2 configurations. This flexibility allows a single transceiver to support multiple deployment scenarios without hardware changes.

Q: What fiber types and distances are supported?
A: This transceiver operates over multimode fiber with reach up to 70 meters on OM3 fiber and up to 100 meters on OM4 fiber. It uses an MPO-12 UPC connector with parallel optics architecture, making it ideal for short-reach data center interconnects.

Q: Is this transceiver compatible with QSFP-DD ports?
A: No, the OSFP and QSFP-DD are physically distinct form factors with different connector designs. OSFP ports require OSFP transceivers. However, Arista offers mechanical adapters (ADPT-O-Q-100G) to use QSFP modules in OSFP ports for 100G applications.

Q: What is the difference between OSFP-400G-SRBD and OSFP-400G-SR8?
A: The OSFP-400G-SRBD1 uses 4 optical lanes over MPO-12 connectors and supports bidirectional and SR1.2 breakouts. The OSFP-400G-SR8 uses 8 optical lanes over MPO-16 connectors and supports breakout to 2x 200G-SR4 or 8x 50G-SR configurations. Choose based on your fiber infrastructure and breakout requirements.

Q: Does this transceiver require FEC for reliable operation?
A: Yes, Forward Error Correction (FEC) is typically required on the host system to support maximum transmission distance and ensure reliable high-speed PAM4 transmission at 100 Gbps per lane. Modern data center switches and adapters provide FEC support as standard.