One of my holiday projects was to redo and optimize part of my home network. One of my homelab servers failed in November. I had only thrown the replacement in the rack to get going, but some cleanup was needed. In addition, a lot of other “layer 1” issues had to be fixed by re-crimping some network drops and doing general network hygiene. The dust buny kind hygiene, not so much the critical controls type. After all, I don't want things to overheat, and it is nice to see all network links syncing properly.
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