When another 100G port on a Cisco chassis has to go live, the QSFP-100G-ERL-S fills the QSFP28 slot as a direct compatible for the identically numbered Cisco optic. It is programmed so the host reads it as the ERL-S module it expects — no configuration edits, no special handling — and diagnostic data over DDM/DOM flows to the platform from the moment the link trains. In a mixed population of optics it behaves no differently from the part it replaces. Verification against Cisco host expectations is completed on every unit before it is boxed for the shelf.
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OEM Equivalent: QSFP-100G-ERL-S
Compatibility: Documented OEM compatibility (Cisco published compatibility documentation): this module is accepted in 100G QSFP28 ports on the ASR 9000 Series, Catalyst 9500 Series, Catalyst 9600 Series, Cisco 8000 Series, NCS 540 Series, NCS 5500 Series, Nexus 3000 Series, Nexus 9200 Series, Nexus 9300 Series, and Nexus 9500 Series. This module follows Cisco's published compatibility matrix; for your exact line card or OS release, email 10.4@tenfouroptics.com and we'll confirm fit.
Tested & Proven: Every TenFour Optics part is coded, tested, and verified before shipment — see Tested & Proven.
Every build is verified for MSA agreement before boxing. Should a unit ever fail, the GreenLights4Life® Limited Lifetime Replacement Warranty applies. In-stock items ship same or next business day — contact 10.4@tenfouroptics.com to confirm availability and lead time.
