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Why does my ethernet switch not work?
Spectrum sent me a new modem and router (separate units) to replace my Spectrum all-in-one modem/router. Sequence is as follows: modem>router>TP-Link Deco mesh node.
Everything works, but Spectrum said that since I have my own router, I can send theirs back and knock $5 off my monthly bill. So I bought a TP-Link ethernet switch. This switch replaces the Spectrum router in the chain. The switch indicates that there is throughput, but my mesh node has no internet connectivity. When I put the Spectrum router back in place, all good.