How to change the optical module port
Identify the alignment key on the SFP module (a small groove or ridge on one side). When you plan to replace a configured optical module with a different type of optical module, you must clear the configurations of the old module before installing the new optical module. Controllers are represented in the rack / slot / instance / port format (r / s / i / p); for example, 0/3/0/1. SFP transceivers allow for the transmission and reception of optical signals in networking devices such as switches, routers, and media converters.
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