At handover the customer asks for the as-built port map, and the te…

Question

At handover the customer asks for the as-built port map, and the team realizes nobody recorded which head port lands on which switch port while the cables were going in. What practice does this failure point to?

Accepted Answer

Recording the DD-port-to-switch-port mapping as each cable is landed — the map is created in the moment the information exists, and that record becomes the as-built. — Here's the thing: port maps don't exist after the fact — they only exist while you're cabling. Six identical cables all lit up look exactly the same once they're dressed in, and rebuilding the map later costs you link flaps scheduled at the worst possible time. Write each row down as each cable lands; your future self will thank you at handover.

Answer

Reconstructing the port map after the fact by toggling links and watching switch logs, which means writing anything down during cabling is redundant effort you would do twice.

Answer

Labels on both cable ends being self-sufficient, because a diligent future engineer can rebuild a complete port map from labels without disturbing any link.

Answer

The port map being the switch team's deliverable under any division of work, so appliance installers never record switch-side landing points.

At handover the customer asks for the as-built port map, and the team realizes nobody recorded which head port lands on which switch port while the cables were going in. What practice does this failure point to?

Short Explanation

Full Explanation