Arista 100GBASE-LR QSFP Transceiver, 10 km Duplex Single-Mode

Ten kilometers of duplex single-mode at 100GbE is the rating of the Arista 100GBASE-LR QSFP Transceiver, part number QSFP-100G-LR. The connector is duplex LC, and the form factor is QSFP28 with one port.

This is the standard long-reach choice for connecting sites within a metro area or across a large campus. Standard duplex single-mode fiber carries the link, so no special parallel cabling is needed, and patch cords and panels follow normal single-mode practice.

Buyers sometimes choose this class even for shorter runs because the spare reach adds margin for aging fiber or extra patch points. For short in-building links, lower-rated modules are cheaper and perform the same job.

Check your Arista switch's supported-optics information before ordering, since platforms vary in what they accept. The far end of the link needs a compatible module, so confirm what is installed there too.

When specifying, note the exact route distance, and confirm that the fiber is single-mode throughout. A single multimode segment in the path will break the link.

The QSFP-100G-LR is available new, refurbished and used. New and refurbished modules carry 1 year or 3 years of warranty, and used modules carry 90 days. Send your quantity and platform for pricing.