How to Troubleshoot a Comcast IP Address

An IP address identifies a computer on a network.

Comcast high-speed Internet service supports the Dynamic Host Configuration Protocol (DHCP). This protocol automatically assigns IP addresses to devices that connect to a network; thus, DHCP eliminates the need for you to manually configure the IP address on your computer to access Comcast's network. If your computer is having a problem connecting to the network, it may be experiencing an IP address conflict. This occurs when two computers on the network are accidentally assigned the same IP address. Solving this problem requires that you disable and re-enable the connection to your Comcast network.

Instructions

1. Click "Start" and select "Control Panel."

2. Click on "Network and Internet," then select "Network and Sharing Center."

3. Click "Change Adapter Settings" on the left side of the window. Right-click on the icon that represents the Comcast network.

4. Select "Disable" from the pop-up menu and wait for the connection to be terminated. The icon will turn gray and the word "Disabled" will appear under the Comcast network's name.

5. Right-click on the network again and select "Enable" from the pop-up menu. The connection will re-establish after a few seconds. Re-enabling the connection renews the IP address.

References

• Comcast: XFINITY Internet from Comcast
• Harvard University: How Do I Release and Renew an IP Address?