SFP-25G-AOC1M=

The SFP-25G-AOC1M is a 25 Gigabit active optical cable, 1 m long, with an SFP28 connector on each end and multimode fibre between them. The optics are sealed inside the connector bodies, so installation is simply plugging in both ends. The rate is fixed by the cable type, so the port at each end must be set for the matching speed. Because it is built to a set length, stock planning is by length, so a rack plan listing each link helps ordering. Hot-swap behaviour follows the host port, and the link normally comes up once both ends are seated. The slim fibre jacket is lighter than twinax copper, which helps in crowded trays and server cabinets. Typical placement is a top-of-rack switch connecting to the server directly beneath it, with almost no excess cable to tuck away. Cisco's 25GBASE SFP28 data sheet lists it as a 25GBASE-AOC assembly and says the host may use either BASE-R or RS-FEC. Check the host platform's supported-cable list before deploying, as support varies by switch family and software release.