Step one - checking the physical connection
First, check the physical connection between the computer and the modem. Go to Control Panel \ Network and Internet \ Network connections right-click on the network card checking: network card status (the card should be enabled), then connection status. Check if you will have the specified speed in the connection parameters. This will confirm the correct connection with the modem. In case the network cable is disconnected or the 'status' option is greyed out, it indicates a problem with the physical connection. In this case, check the cable, plug it into a different port on the router.
If you are connected to the modem, but the computer has no IP addressing, check: if another router is connected to the modem. Often the modems are switched to the bridge mode and another router providing the WiFi service may be connected behind the Arris modem. Then the computer should be connected to the second modem. If there is no other device connected to the modem, it is necessary to check the computer's network settings.
Step two - trying to set up static addressing and connecting to the modem via LAN:
If the computer does not have an IP address, connect via WiFi. You can use the phone and the application (when searching for an application, enter: show ip address), which will display the address that your WiFi connected device has received. Record the address, netmask, gateway, and DNS address. Then set these parameters on your device by changing the last value of the ip address (eg if the device had the address 192.168.0.2/255.255.255.0 then set it eg 192.168.0.12). After setting the correct parameters, check if your computer 'sees' the router. You can check it by running the command 'cmd' and then in the console window by issuing the command 'ping gateway_address' (gateway_address - it is in the wifi connection parameters). If you get answers after issuing the ping command, you have a cable connection to the modem.
The next step will be to check the Internet connection (as long as the modem responded to the previous ping attempt). In the 'cmd' window, issue the command 'ping 212.77.98.9'. If you receive:
- no answer - means no internet connection
- answer - the internet works fine
Step three - connecting to the modem via WiFi
The Arris modem has the following default parameters related to access to the management panel. After connecting to WiFi, open the browser and enter http: // gateway_address (see the description from point 2 where to get information about addressing) and enter the login details below. The default url for web access is http: // 192.168.0.1
Username: admin
Password: password
If it is not possible to log into the modem, check the stickers on the modem - modems dedicated to operators often have different non-standard passwords for the web panel. After logging in to gui, you will check the modem settings - check if there is no mac-address filtering on the LAN or if the LAN ports are not turned off.
Step four - factory reset
If all other options fail, find the reset button on the modem. Hold it for a few seconds - it will restart the device settings to the factory parameters (defined by default by the service provider). Factory reset usually helps, but expect you to lose any individual settings.
