By default, the cable modem router acts as a Dynamic Host Configuration Protocol (DHCP) server. The cable modem router assigns IP, DNS server, and default gateway addresses to all computers connected to the LAN. The assigned default gateway address is the LAN address of the cable modem router. These addresses must be part of the same IP address subnet as the cable modem router’s LAN IP address. Using the default addressing scheme, define a range between 192.168.0.2 and 192.168.0.254, although you can save part of the range for devices with fixed addresses.
To specify the pool of IP addresses that you cable modem router assigns:
The cable modem router delivers the following parameters to any LAN device that requests DHCP:
- Launch a web browser from a computer or mobile device that is connected to your cable modem router’s network.
- Enter http://www.routerlogin.net.
- Enter the 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 page displays. - Select ADVANCED > Setup > LAN Setup.
- Make sure that the Use Router as DHCP Server check box is selected.
- Specify the range of IP addresses that the cable modem router assigns:
- In the Starting IP Address field, type the lowest number in the range.
This IP address must be in the same subnet as the cable modem router. - In the Ending IP Address field, type the number at the end of the range of the IP addresses.
This IP address must be in the same subnet as the cable modem router.
- In the Starting IP Address field, type the lowest number in the range.
- Click the Apply button.
Your settings are saved.- An IP address from the range that you defined
- Subnet mask
- Gateway IP address (the cable modem router’s LAN IP address)
- DNS server IP address (the cable modem router’s LAN IP address)
For more information, see How can I troubleshoot my cable modem?.