How should unused ports on networking equipment be treated?

Unused ports on networking equipment should be capped or sealed to prevent dust contamination. This is important because dust and other contaminants can accumulate in open ports, potentially leading to physical damage or degraded performance when the ports are eventually used. Sealing the ports protects the internal components from environmental elements and helps maintain the integrity of the equipment, ensuring better reliability and longevity.

Leaving ports open for future use poses a risk, as they become susceptible to dust and debris. Likewise, covering them with duct tape is not a professional or effective solution, as duct tape can leave residue and may not provide a reliable seal. Connecting unused ports to test equipment isn't necessary, as this could lead to confusion and unnecessary complexity within the system. Therefore, capping or sealing is the most effective and professional approach for maintaining unused ports.