The sbg8300 is a combination DOCSIS cable modem and four-port Ethernet router with Wi-Fi. It uses DOCSIS technology to provide ultra-high-speed Internet access on your Wi-Fi home or small business network. Using the connection capabilities of the sbg8300, you can connect your computer and other network-enabled devices through the four Ethernet ports or the 2.4 GHz and 5 Ghz Wi-Fi connections. The sbg8300 connects to the existing coaxial cable connection in your home.
Note: For Internet connections, you need a cable service connection with a cable Internet Service Provider. The Arris sbg8300 will not work with DSL or satellite Internet service.
To save time, make sure you have the Wi-Fi cable modem model name (sbg8300), HFC MAC ID, and Serial Number (S/N) listed on the Wi-Fi cable modem label located on the bottom of your sbg8300 or attached in the Wi-Fi Cable Modem Label section at the end of this document.
Note: For Comcast subscribers only, please visit register.xfinity.com before calling Comcast or ARRIS. If there is an issue with the activation, please call Comcast. Make sure you have your Comcast XFINITY account number, account phone number, and login information your email address or user name and password.
Check the Wi-Fi cable modem connectivity by accessing the Internet using the connected PC or laptop.
Visit any public web page such as www.surfboard.com. In case the website neglects to open, then call your service provider to set up your Internet service or enable your Arris sbg8300.
Use the Arris SURFboard Manager mobile app or the Web Manager for your sbg8300 to set the same network name and password, if you are replacing the router or Wi-Fi cable modem in an existing Wi-Fi network. This will ensure that your Wi-Fi devices will automatically connect to your new Arris sbg8300 Wi-Fi network.
Customize the default Wi-Fi network name (SSID) sbg8300 for your Wi-Fi home network after installing your sbg8300 and setting up your network connections.
Note: You have the option to either keep the default Wi-Fi network name and password or create a new network name and password to help you to identify your Wi-Fi home network and also remember your network password. For additional assistance with your sbg8300, Arris is available to help. Choose one of the following: Visit www.arris.com/selfhelp for Self Help, Product Manuals, Live Chat, and Email support. Call us.
If the label is not attached, please check the bottom of your Wi-Fi gateway
So, I hope you find this post useful and now you will be able to setup Arris sbg8300 Wifi Extender.