Exchanging the Arista original for the QSFP-100G-LRL4 leaves the port none the wiser: the same 100G signaling in the same QSFP28 form factor, presenting the EEPROM identity the host looks for. Nothing in the switch configuration has to move — the replacement announces itself as the LRL4 part, links at 100G, and keeps DDM/DOM diagnostics flowing to the platform exactly as before. TenFourOptics programs and verifies each serial against Arista host behavior before it is packed. In practice the changeover is limited to seating the new module.
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OEM Equivalent: QSFP-100G-LRL4
Compatibility: Documented OEM compatibility (Arista published compatibility documentation): this module is accepted in 100G QSFP28 ports on the 7020R Series, 7050X3 Series, 7060X Series, 7060X4 Series, 720XP Series, 7280R3 Series, 7300X3 Series, and 7800R3 Series. Confirm your exact chassis, line card, and OS release against the Arista matrix before deployment.
Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.
MSA conformity is part of the outgoing test pass on every unit, alongside coding and diagnostics checks. Backed by the GreenLights4Life® Limited Lifetime Replacement Warranty. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.
