Arista SFP-10G-RA-1G-SX | 10G to 1G Rate-Adapting Transceiver, 850nm, 550m MMF

Q: What problem does the SFP-10G-RA-1G-SX solve?
A: This transceiver enables 10G SFP+ switch ports to connect to existing 1G SX fiber infrastructure by rate-adapting from 10G on the host side down to 1G on the media side. This allows organizations to leverage legacy multi-mode fiber cabling during switch upgrades without requiring complete infrastructure replacement.

Q: Which fiber cable types are supported?
A: The SFP-10G-RA-1G-SX requires multi-mode fiber (MMF) with duplex LC connectors. It operates at 850nm wavelength and supports distances up to 550m over OM2 fiber (500 MHz·km), with shorter distances possible over lower-grade FDDI or OM1 fiber.

Q: Does it support auto-negotiation?
A: Yes, the transceiver includes internal Clause 37 auto-negotiation support on the media interface, ensuring automatic and reliable link establishment with connected 1G SX equipment without requiring manual speed configuration on the switch.

Q: Which Arista platforms support this transceiver?
A: The SFP-10G-RA-1G-SX is supported on specific Arista switch platforms. Consult the official Arista Transceiver and Cable Guide available on arista.com for the complete list of compatible switch models and minimum EOS software version requirements.

Q: What diagnostic capabilities are included?
A: The transceiver supports Digital Optical Monitoring (DOM), providing real-time diagnostic data including optical transmit and receive power levels, module temperature, supply voltage, and laser bias current. This data is accessible via Arista EOS CLI or CloudVision for proactive fault detection and network management.