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DNS Changes - Windows help for Laptop users

Individuals who carry a laptop between on-campus locations and off-campus locations may need to configure their laptop to use appropriate DNS settings for multiple locations.

Below are instructions for configuring Windows XP for accessing 2 distinct networks (eg Home & Work). Windows XP, automatic configuration makes it easy to move your mobile computer from your home network to the local area network in your office, without the need to manually reconfigure TCP/IP settings. This feature is useful whether you move your computer between wired networks, wireless networks, or a combination and should work for the majority individuals who user a static IP address at Penn but receive IP addresses at home via DHCP.

With these settings, your computer will automatically try an alternate TCP/IP configuration if it cannot find a Dynamic Host Configuration Protocol (DHCP) server.

To configure TCP/IP for an alternate configuration

  1. Click Start, click Control Panel, click Network and Internet Connections, and then click Network Connections. (If you're using Classic view click Start, and click Control Panel, and then double-click Network Connections).
  2. Right-click the network connection that you want to configure, and then click Properties.
  3. On the General tab (for a local area connection) or the Networking tab (for all other connections), click Internet Protocol (TCP/IP), and then click Properties.
  4. On the General tab, click Obtain an IP address automatically.
  5. On the Alternate Configuration tab, click User configured as shown in Figure 1 below and then type the appropriate values for the following items. (Contact your network administrator for this information.):
    • IP address
    • Subnet mask
    • Default gateway
    • Preferred and alternate DNS server
    • Preferred and alternate WINS server
  6. Click OK.

You must be logged on as an administrator or a member of the Administrators group to complete this procedure. If your computer is connected to a network, policy settings may prevent you from completing this procedure. Contact your LSP for assistance.

With these settings, Windows XP will use your configured alternate address if a DHCP server is not reached.

Useful links:

Content on this page was developed from parent materials provided by Microsoft Corporation

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