E100G-QSFP28-LR1 Brocade Compatible QSFP28 Transceiver

E100G-QSFP28-LR1 is Brocade's part number for a single-lambda 100G QSFP28 transceiver. The “LR1” designation indicates single-lambda LR, distinguishing it from the four-lane E100G-QSFP28-LR4 in Brocade's optics portfolio. EdgeOptic's compatible replacement is built on our 100G-QSFP28-SL10 platform, matching the original optical and electrical specifications. The module reaches 10 km over standard G.652 single-mode fiber with duplex LC/UPC connectors.

Following Brocade's acquisition by Broadcom in 2017, the ICX campus switching line moved to Ruckus (now operating independently under Ruckus Networks). The E100G-QSFP28-LR1 remains a current ordering code for ICX 7850 and SLX 9740 platforms. Both Ruckus-branded and legacy Brocade-branded firmware versions recognize this part number in transceiver inventory commands. The ICX 7850-48FS and 7850-32C are the most common chassis for 100G uplink deployments where this module appears.

The module operates on a single optical lane using 100G PAM4 modulation at 1304.5–1317.5 nm, conforming to IEEE 802.3cu 100GBASE-LR. This differs from the E100G-QSFP28-LR4 approach, which splits the signal into four 25G NRZ lanes across LAN WDM wavelengths per IEEE 802.3ba. Single-lambda LR reaches the same 10 km distance over G.652 single-mode fiber, but requires RS(544,514) KP4 FEC at the host MAC layer. The ICX 7850 enables KP4 FEC automatically when it detects a single-lambda 100G module, so no manual FEC configuration is required. Typical module power consumption is around 3.5 W, lower than most four-lane LR4 modules.

Transmit power specification ranges from -3.8 dBm to +2.4 dBm, with receive sensitivity at -9.3 dBm (pre-FEC BER threshold of 2.4e-4). The transmitter uses a DFB laser source; the receiver uses a PIN photodiode with linear equalization for PAM4 signal recovery. DDM per SFF-8636 provides real-time monitoring of Tx/Rx power, temperature, laser bias current, and supply voltage through the ICX 7850 CLI ('show optic' command). On the SLX 9740, the equivalent command is 'show media interface'. Both platforms also expose DDM values via SNMP for integration with network management systems.

EdgeOptic's compatible is programmed with Brocade/Ruckus vendor identifiers, so the ICX 7850 and SLX 9740 recognize it without optic-allow or unsupported-optic-enable configuration. Don't confuse the LR1 with the E100G-QSFP28-LR4; they are optically incompatible and cannot form a link with each other. Both ends of a fiber span must run the same modulation format. For ICX 7850 deployment planning or volume pricing, contact our sales team