Arista SFP-25G-MR-XSR-Arista | 25G SFP28 Transceiver, Multi-Mode, 850nm, 300m, LC

Q: What is the difference between the SFP-25G-MR-XSR and standard 25G-SR transceivers?
A: The SFP-25G-MR-XSR is an extended reach (XSR) module that supports 25G up to 300m over OM4 fiber, compared to 100m for standard 25G-SR. This makes it ideal for campus and larger data center deployments requiring longer fiber runs.

Q: Can this transceiver operate at 10G speeds?
A: Yes, the SFP-25G-MR-XSR is a dual-rate module supporting both 10G and 25G operation. At 10G, it reaches up to 400m over OM4 MMF and optically interoperates with legacy 10G-SR transceivers, though attenuation may be required for short links.

Q: Is this transceiver compatible with non-Arista switches?
A: Yes, the SFP-25G-MR-XSR follows the SFP28 MSA specification and is compatible with any SFP28 port that supports 25G/10G operation on multi-mode fiber at 850nm, including switches from other vendors.

Q: What type of fiber cable is required for this transceiver?
A: This transceiver requires OM3 or OM4 multi-mode fiber with LC duplex connectors. OM4 fiber is recommended for maximum reach (300m at 25G, 400m at 10G), while OM3 supports 200m at 25G and 300m at 10G.

Q: Does this module support Digital Diagnostics Monitoring?
A: Yes, the SFP-25G-MR-XSR includes DDM/DOM functionality, allowing real-time monitoring of optical power levels, temperature, voltage, and transmit bias current for proactive network management and troubleshooting.