Lesson 1: Understanding Name Resolution in Windows Server 2008 Networks
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Exercise 6 Testing Automatic Name Resolution on an IPv4-only Workgroup with Network Discovery Enabled and NetBIOS Disabled In this exercise, you disable IPv6 and NetBIOS in IPv4. You then observe the distinctive behavior that results from this configuration. 1. Using the instructions given in the previous exercises, on Local Area Connection on both computers, disable both IPv6 and NetBIOS in IPv4. After you perform this step, restart both computers. 2. When both computers finish restarting, log on to Boston as an administrator. 3. At the command prompt, type ping dcsrv1. You receive a message indicating that the Ping request could not find the host. In an IPv4-only network, you need NetBIOS to be able to ping a computer by name. Network Discovery does not provide this functionality. 4. In the Run box, type \\dcsrv1, and then press Enter. In an IPv4-only network, you cannot connect to a computer by specifying its name in a UNC pathname unless NetBIOS is enabled. Network Discovery does not enable this functionality in IPv4 networks. 5. From the Start Menu, choose Network. The Network window displays either Boston, or Dcsrv1, or both. Both will eventually appear if you refresh the screen. Network Discovery is the feature that populates the Network window in IPv4. 6. When Dcsrv1 appears in the Network window, double-click its icon. You receive a message indicating that Windows cannot access \\DCSRV1. Double-clicking a computer in the Network window is functionally equivalent to attempting to connect by specifying the computer’s name in a UNC. Even if you can see a computer listed in the Network window, you cannot connect to it because NetBIOS is disabled in this IPv4-only network. 7. Close all open windows.
Exercise 7 Testing Automatic Name Resolution on an IPv4-only Workgroup with Both Network Discovery and NetBIOS Enabled In this exercise, you enable NetBIOS and observe the change in name resolution behavior. 1. Using the instructions provided in the previous exercises, on the Local Area Connection on both computers, enable NetBIOS in IPv4 by selecting the NetBIOS setting of Default in the WINS tab of the Advanced TCP/IP Settings dialog box. (Leave IPv6 disabled for the connection.) After you perform this step, restart both computers. 2. When both computers finish restarting, log on to Boston as an administrator.