While I can't find make/model or all things the fact you used the word patch for the cable means it could be that. Try using a normal Ethernet cable.
My router shows an unknown connection with a Pysical and an IP address. The ip address "pings" and is confirmed to be my CCTV DVR. The rj45 patch cable indicates an orange light at both the DVR and router end. All this and I cannot get a connection to the DVR showing the CCTV images. Can anyone help please.

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