Arista SFP-25G-ER-Arista | 25G SFP28 Transceiver, Single-Mode, 40km, 1310nm, LC

Q: What is the maximum transmission distance for the SFP-25G-ER?
A: The SFP-25G-ER supports transmission distances up to 40km over duplex single-mode fiber using a 1310nm wavelength, making it ideal for extended enterprise campus links and metro network applications.

Q: Is the SFP-25G-ER compatible with 10G SFP+ optics?
A: Arista 25G SFP ports can support 10G SFP+ modules. However, when connecting the SFP-25G-ER to legacy fixed-rate 10G optics, optical attenuation may be required to ensure the input power to the 10G module remains within allowable limits.

Q: Does this transceiver support Digital Optical Monitoring?
A: Yes, the SFP-25G-ER includes full DOM/DDM functionality, enabling real-time monitoring of operating parameters including temperature, supply voltage, laser bias current, and transmit/receive optical power levels.

Q: Which Arista platforms support the SFP-25G-ER transceiver?
A: The SFP-25G-ER is designed for Arista network equipment with 25G SFP28 ports. For a complete list of supported platforms and line cards, refer to the official Arista Transceiver and Cable Guide documentation.

Q: What standards does the SFP-25G-ER comply with?
A: This transceiver is fully compliant with IEEE 802.3by and IEEE 802.3cc standards for 25G Ethernet, as well as the SFP28 MSA (Multi-Source Agreement), CPRI, and eCPRI standards, ensuring seamless interoperability with industry-standard 25G interfaces.