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Configure DHCP Settings on your ZyXEL C2100Z modem

DHCP Settings allow you to edit the DHCP settings that define the LAN addressing parameters for your modem to allocate IP addresses to LAN devices.

CenturyLink recommends that you keep the default settings for the LAN IP Address. Changes to this feature will reset some of the other settings on the modem. Do not proceed unless you understand the technical impacts of changing this feature. The default IP addressing values are:
  • DHCP Server: Enable
  • Modem IP Address: 192.168.0.1
  • Beginning DHCP Server Address: 192.168.0.2
  • Ending DHCP Server Address: 192.168.0.254
  • Subnet mask: 255.255.255.0
  1. Connect a device directly to your modem.
  1. Open a web browser and go to http://192.168.0.1.
  1. Login to your modem by entering the Admin Username and Admin Password, then select "Apply." If your modem is using the default settings, this information is located on the modem sticker.
Learn more about password security best practices.
  1. Select "Advanced Setup."
  1. Select "DHCP Settings."
  1. From here you can view or edit the "DHCP Settings".
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