Work through a named 10G optical path

What the documents establish

The16.10.1 release notes list SFP-10G-SR-X with C9300-NM-8X across Catalyst9300 models. The transceiver sheet gives the SR-X850nm multimode case and up to400m on OM4, and permits PC/UPC patch cords rather than APC. Its minimum-cabling-distance footnote is2m.

The declared worked case

Declare two supported Catalyst9300/C9300-NM-8X ports using SFP-10G-SR-X in10GBASE-SR mode and a10m duplex OM4 LC PC/UPC path. Ten meters is the selected scenario length, not an observed cable or a new maximum. The existing Corning LC PC OM4 series is a selection reference; obtain the exact selected cord SKU/length and polarity evidence.

Separate paths and power

Traffic A→B must reach B's receiver, and traffic B→A must reach A's receiver on the other fiber. The hosts power their modules; the fiber does not deliver PoE. No USB peripheral or display-power path is implied.

Contrary and unknown cases

A same-shaped APC jumper conflicts with the sheet's supported PC/UPC patch-cord statement. An unlabelled LC jumper has unknown fiber/polish/polarity; it cannot be accepted as OM4 because it fits. A different module PID or OS needs its own support lookup.

What remains unobserved

No hardware setup, installed loss budget, launch/receive power, DOM reading or link negotiation was measured. The current dynamic compatibility-matrix page returned no readable rows, so this example remains explicitly tied to the historical release-note support, not a present-day deployment recommendation. Trained personnel must inspect/clean/reinspect isolated optical connections and test the installed path.

Your next useful observation

Record the exact model, selected length, both endpoint roles and required application. Keep undocumented properties unknown.

Keep these limits

• Source-scoped examples only. No actual cable sample, link, power, qualification or certification test was performed.