that sounds good.  maybe your previous ethernet cable was indeed causing issue. I learned this from another user's issue: Even if you believe that your Ethernet cabling is perfectly fine, and even if this cabling worked fine before, swapping it out for another, proven cable, or a brand new Cat 6 cable, will almost certainly solve the issue with the minimum of troubleshooting and headache. This is a very, very common occurrence when troubleshooting Gigabit Ethernet, and it nearly always comes down to one cable being the culprit.
On a stable XPS system (running Windows 10) connected reliably via a router and fibre unit to the Internet, I  have suddenly started to experience a connection problem, which comes and goes - typically lasting for several hours then just as suddenly righting itself, then reappearing the next day or two days later.. Problem is detected by sudden loss of Internet connection to the XPS 8920 (my principle computer); clicking on  'Network & Internet Settings' in taskbar  - my local 'ethernet' network appears as 'Unidentified Network' with 'No Internet'. Note that other devices have no interruption to their Internet connection through the same router  - both cable-connected (backup DELL XPS 8700) and WiFi connected (DELL Inspiron laptop,TV decoder, Internat radio).. No obvious physical issue (checked ethernet cable between XPS 8920 and router; tried changing ethernet ports on router). Tried powering off and re-powering on router. Tried restarting XPS 8920. All had no effect. Then, after an hour or so, after another restart, suddenly the problem has disappeared - in 'Netwrok & Internet Settings' the local network is now correctly identified by name and is shown to be 'Connected'. A day or two later suddenely the same problem occurs and lasts for several hours. Would welcome suggestions.    
XPS 8920, intermittent network problem