Arista OSFP-400G-SRBD-Arista | 400G OSFP Transceiver, 850nm/910nm, 100m MMF, MPO-12

Q: What breakout configurations does the OSFP-400G-SRBD support?
A: The OSFP-400G-SRBD is software configurable to operate as a point-to-point 400GE link (400GBASE-SR4.2), or break out into either 4x 100GBASE-BIDI (100G-SRBD) or 4x 100GBASE-SR1.2 links. Note that you must use either 100G-SR1.2 or 100G-SRBD exclusively on all four breakouts; a single module cannot support a mix of both types.

Q: What fiber types and distances does this transceiver support?
A: The OSFP-400G-SRBD operates over multimode fiber with an MPO-12 connector, supporting transmission distances of up to 70 meters over OM3 fiber or up to 100 meters over OM4 fiber. It uses 850nm/910nm bidirectional wavelengths with PAM4 modulation for efficient bandwidth utilization.

Q: Which Arista switches are compatible with the OSFP-400G-SRBD?
A: This transceiver is designed for Arista switches with OSFP ports, such as the 7060PX4-32 and other 7060X4 Series platforms. These switches support 400G OSFP interfaces and allow flexible port configurations at 400GbE, 200GbE, or 100GbE speeds. Refer to Arista's transceiver and cable guide for platform-specific compatibility and minimum EOS software requirements.

Q: What is the advantage of the bidirectional (BIDI) design?
A: The BIDI design allows full-duplex 100Gb/s transmission over duplex multimode fiber, with each optical port containing both a transmitter and receiver operating at different wavelengths (850nm/910nm). This eliminates the need for expensive parallel fiber infrastructure and offers a seamless migration path from 10G/40G to 100G and 400G deployments while reducing fiber count and complexity.

Q: Is this transceiver compatible with third-party optics?
A: Yes, the OSFP-400G-SRBD is designed to IEEE 802.3 standards and will interoperate with standards-compliant third-party 400GBASE-SR4.2 and 100G BIDI/SR1.2 transceivers. For optimal performance and guaranteed compatibility, Arista recommends using Arista-certified optics, though third-party optics meeting industry standards are generally supported.