Arista SFP-25G-MR-SR-Arista | 10/25G SFP28 Transceiver, Dual-Rate, 850nm, 400m MMF

Q: Is the SFP-25G-MR-SR backward compatible with 10G equipment?
A: Yes, the SFP-25G-MR-SR is a dual-rate transceiver that supports both 10GBASE-SR and 25GBASE-SR. It will interoperate with existing 10G SFP+ optics, providing 10G connectivity up to 400m (OM4) or 300m (OM3), enabling smooth network upgrades without replacing cabling infrastructure.

Q: What fibre types are compatible with this transceiver?
A: This transceiver operates over multimode fiber (MMF) including OM3 and OM4 grades. At 25G, it supports 70m on OM3 and 100m on OM4. At 10G, reach extends to 300m on OM3 and 400m on OM4. OM1 and OM2 are not recommended for optimal performance.

Q: Does this module support Digital Optical Monitoring?
A: Yes, the SFP-25G-MR-SR includes integrated DOM (Digital Optical Monitoring) functionality, allowing real-time monitoring of key parameters such as optical transmit and receive power, temperature, transmit bias current, and supply voltage for proactive network management.

Q: Can I use this transceiver in Arista 25G and 10G SFP+ ports?
A: Yes, the SFP-25G-MR-SR is designed for use in Arista 25G SFP28 ports and is backward compatible with many 10G SFP+ ports that support multi-rate operation. Always consult Arista's Transceiver and Cable Guide for platform-specific compatibility.

Q: What applications is this transceiver best suited for?
A: The SFP-25G-MR-SR is ideal for data centre leaf-spine architectures, enterprise campus networks, and high-performance computing environments requiring 25G connectivity with 10G backward compatibility. It supports seamless network migration from 10G to 25G infrastructure.