I would prefer to be able to completely disable the router function and (with the WiFi switched off) just use the ETH2 port to replace the one on the main router taken by the cable from ETH1 on the JS200-FX.
It is possible to run and configure the JS200-FX using only the ETH1 port. But first you need to go to Firewall, Remote Admin tab and turn on Remote Admin Web GUI. You might also want to change the port from 8080 to 80.
It is possible to run and configure the JS200-FX using only the ETH1 port. But first you need to go to Firewall, Remote Admin tab and turn on Remote Admin Web GUI. You might also want to change the port from 8080 to 80.