SFP-10G-ER-Arista-BCC | Arista Compatible 10GB Single-Mode ER - 40km (10GBASE-ER)

Q: Will this work in place of the Arista SFP-10G-ER-ARISTA?
A: Yes. This module conforms to the IEEE 802.3ae 10GBASE-ER standard with the same SFP+ form factor, 1550nm wavelength, and 40km reach specification. It is plug-and-play compatible with Arista platforms equipped with SFP+ ports and will be recognized identically to the reference module.

Q: Which Arista switches support this transceiver?
A: This transceiver is compatible with Arista switches and routers featuring standard SFP+ ports, including the 7100, 7150S, and 7300 series platforms. Confirm that your platform supports 10GBASE-ER optics and that EOS firmware is current; consult the Arista transceiver compatibility guide for platform-specific validation.

Q: What is the optical power budget and when is attenuation required?
A: The IEEE 802.3ae specification defines a minimum link budget of approximately 15 dB for 10GBASE-ER. On links shorter than the rated 40km, the receiver may experience optical overload. For distances under 10km, add an LC inline attenuator (typically 10-12 dB) to protect the receiver from damage.

Q: Can this module operate at lower data rates or with OTN encapsulation?
A: This transceiver supports multirate operation including 10GBASE-ER Ethernet at 10.3125 Gbps and 10GBASE-EW (WAN PHY) at 9.95 Gbps. It is also compatible with OTU2/OTU2e SONET/SDH framing, making it suitable for carrier and service provider transport networks that require protocol flexibility over the same physical layer.

Q: How does the 1550nm wavelength affect deployment compared to 1310nm LR optics?
A: The 1550nm transmission window exhibits lower fibre attenuation (approximately 0.25 dB/km) than 1310nm (approximately 0.35 dB/km) on standard G.652 single-mode fibre, which directly enables the extended 40km reach. This wavelength is also compatible with DWDM and CWDM multiplexing for wavelength reuse, unlike 1310nm which cannot be economically muxed.