Extreme Networks 25G-LR-SFP10KM Compatible 25GBASE-LR SFP28 10 km

EdgeOptic's 25G-LR-SFP10KM compatible is an Extreme Networks-coded dual-rate 10G/25G LR SFP28 transceiver and the Extreme Networks-coded variant of the EdgeOptic 25G-SFP28-10 multi-vendor 25GBASE-LR catalog. Extreme Networks catalogs this optic as 25G-LR-SFP10KM with the alternate part number 10504 in Extreme pluggable documentation. The module carries 10 Gigabit Ethernet (10.31 Gbps) and 25 Gigabit Ethernet (25.78 Gbps) over a single G.652 SMF pair at 1310 nm, terminated with a duplex LC/UPC connector.

The transmitter is a DML driving the 1310 nm LC duplex; the receiver is a PIN photodiode. Optical specifications: TX output power −7 to +2 dBm, RX sensitivity −12 dBm, RX overload +3 dBm, minimum extinction ratio 3.5 dB, and a 5 dB optical link budget over the 10 km specified reach on G.652 SMF. Real reach on a long link is loss-limited by installed fiber attenuation, splice loss, and connector loss, so on spans above 8 km calculate end-to-end insertion loss against the 5 dB budget rather than the nominal 10 km figure. The module operates 0 to 70 °C on a +3.3 V single supply with 1.2 W maximum power consumption.

At 25G operation the host MAC performs RS(528,514) RS-FEC; the module itself has no built-in FEC. Extreme Networks pluggable documentation notes that no FEC is required on the host switch for the 25G-LR-SFP10KM, but FEC behavior remains configurable per port on Extreme switches and can vary across ExtremeXOS, SLX-OS, and VOSS software releases. The FEC mode must agree on both link partners or the link comes up down without optical errors, so verify the per-interface FEC configuration on both ends before commissioning. At 10G operation the optic behaves as a standard 10GBASE-LR module and host-side FEC is not required, but the host port must support dual-rate selection between 10G and 25G on its SFP28 cage. DDM diagnostics report TX power, RX power, module temperature, laser bias, and supply voltage in real time per SFF-8472.

The module ships with Extreme Networks-recognized EEPROM coding for clean registration under ExtremeXOS, SLX-OS, and VOSS. 25G-LR-SFP10KM targets Extreme switching platforms with 25G SFP28 cages. Verify the specific Extreme chassis, line card, and software release against the Extreme Optics Compatibility portal at optics.extremenetworks.com before ordering, because per-platform support coverage changes between Extreme software releases and across the ExtremeSwitching, SLX, and VSP product lines. Typical applications: campus 25G uplinks on Extreme switching aggregation, data center 25G connections on top-of-rack deployments, and metro 25G long-reach connections on Extreme routing platforms. Conforms to IEEE 802.3cc, SFF-8431, SFF-8432, SFF-8472, and the SFP28 MSA.

Compliance: CE, Class 1 FDA and IEC 60825-1 laser safety, RoHS. Ships next business day from EU stock with a lifetime warranty. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. For volume pricing, custom EEPROM coding, or compatibility verification on a specific Extreme Networks platform, contact our sales team.