How to Reset an IP Address for Time Warner Internet

By Jedadiah Casey

When a computer or router connects directly to a Time Warner cable modem, the hardware Media Access Control (MAC) address of the device connecting to the modem is remembered by Time Warner's DHCP database, which is responsible for assigning an IP address to the cable modem. This means that each time that device connects to the cable modem, it receives the same IP address. To reset the IP address for Time Warner Internet, the device connected to the modem must be changed temporarily.

Step 1

Disconnect the power from the Time Warner Internet connection.

Step 2

Connect a different Ethernet device to the Time Warner Internet connection.

Step 3

Power on the Time Warner Internet connection and wait approximately 90 seconds for the device to synchronize. At this point, the cable modem is using a different IP address.

Step 4

Repeat the previous steps with the exception of connecting the original device, such as a computer or router, back into the Time Warner Internet connection. Because the IP address was reset when the previous steps were performed, it is is reset again to a completely new IP address when the original device is reconnected.

Tips & Warnings

  • If these steps fail to work correctly, call Time Warner and have them manually reset your IP address.
  • All Ethernet devices, both wired and wireless, have a 48-bit Media Access Control (MAC), or hardware address. The first 24 bits represent the manufacturer of the Ethernet device. The second 24 bits represent a globally-unique code created by the manufacturer so that no two Ethernet cards have the exact same address.