Arista SFP-25G-LR 25 Gigabit BASE-SR 10km SMF SFP28 Optical Transceiver

The Arista SFP-25G-LR is a SFP28 25GBASE-LR optical transceiver for 25G links over single-mode fiber. It transmits at 1310nm. It reaches up to 10 kilometers and uses a duplex LC connector.

It is the standard long-reach 25G optic. Use a matching 25GBASE-LR optic at the far end of the link unless Arista lists the pairing above, and use single-mode patch cables.

If you need a different reach, the SFP-25G-MR-XSR 10/25GBASE-MR-XSR transceiver and the SFP-25G-SR 25GBASE-SR transceiver are also available. A new SFP-25G-LR is also available.

Arista publishes a transceiver compatibility guide that lists which switch platforms and EOS releases support each module, so check it for your switch before you order.

Single-mode fiber is normally run in yellow jacketed patch cables, so check that every patch cord and panel in the path is single-mode before you connect it.

Keep the dust caps on the optic and the fiber until you are ready to connect them, and clean the connector end faces before you plug them in. Most failed optical links come down to a dirty connector.

The module is hot-swappable, so you can install or replace it without powering down the switch. Check that the port is set to the right speed before you bring the link up.

This seller refurbished SFP-25G-LR is tested, working, and covered by the NetworkTigers one-year warranty.