Hello donminicb
You will want to disable router mode in the N600 this will make it a modem only and orbi will handle everything else.
To cable your modem router to a gateway or router: 1. Connect a coaxial cable. Use the coaxial cable that your cable company provides to connect the cable port on the modem router to a cable wall outlet or a line splitter. Note: If Charter is your cable Internet service provider (ISP), Charter recommends connecting your modem router directly to a cable wall outlet. If you must use a splitter, use a splitter that is rated at 3.5 dBmv.
2. Connect the power adapter to the modem router and plug the power adapter in to an electrical outlet.
3. Press the Power On/Off button on the rear panel of the modem router. The Power LED lights green.
4. On your computer or wireless device, find and select the WiFi network. The WiFi network name is on the modem router’s label.
5. Join the WiFi network and enter the WiFi password. The password is on the modem router’s label. Your wireless device connects to the WiFi network.
6. Launch a web browser.
7. Type http://routerlogin.net or http://192.168.0.1. A login screen displays.
8. Enter the modem router user name and password. The user name is admin. The default password is password. The user name and password are case-sensitive. The BASIC Home screen displays.
9. Select ADVANCED > Administration > Router Mode.
10. Select the No radio button. With this setting, the modem router works as a bridge and obtains IP addresses from the Internet service provider.
11. Click the Apply button. Your change is saved.
12. Follow the instructions that came with your router to connect it to the modem router
