Network bindings enable communication among network adapter card drivers, protocols, and services. Figure 4.10 shows an example of network bindings. In this example, the workstation service is bound to each of three protocols, and each protocol is bound to at least one network adapter card. This lesson describes the function of bindings in a network and the process for configuring them.
Figure 4.10 Network bindings
The Windows XP Professional network architecture uses a series of interdependent layers. The bottom layer of the network architecture ends at the network adapter card, which places information on the cable, allowing information to flow between computers.
Binding is the process of linking network components on different levels to enable communication between those components. A network component can be bound to one or more network components above or below it. The services that each component provides can be shared by all other components that are bound to it. For example, in Figure 4.10, TCP/IP is bound to both the Workstation service and the Server service.
Many combinations of network bindings are possible. In the example shown in Figure 4.10, all three protocols are bound to the Workstation service, but only the routable protocols, NWLink and TCP/IP, are bound to the Server service. It is possible to select which protocols are bound to the network adapter cards if you are a member of the Administrators group. Network adapter card (0) is bound to all three protocols, and network adapter card (1) is bound only to the routable protocols.
When adding network software, Windows XP Professional automatically binds all dependent network components accordingly. Network Driver Interface Specification (NDIS) 5.1 provides the capability to bind multiple protocols to multiple network adapter card drivers.
You can configure your network bindings using My Network Places.
To configure network bindings, complete the following steps:
There should be a check mark in the check box.
There should not be a check mark in the check box.
Only an experienced network administrator familiar with the requirements of the network software should attempt to change binding settings.
You also can specify binding order to optimize network performance. For example, a computer running Windows XP Professional has NWLink IPX/SPX and TCP/IP installed. However, most of the servers to which this computer connects are running only TCP/IP. Verify that the Workstation binding to TCP/IP is listed before the Workstation bindings for the NWLink IPX/SPX protocol. In this way, when a user attempts to make a connection to a server, the Workstation service first attempts to establish the connection using TCP/IP.
To specify binding order, complete the following steps:
In this practice, you'll change the binding order of the protocols bound to your network adapter card. Then you'll unbind a protocol from your network adapter card and bind a protocol to your network adapter card. Finally, you'll uninstall a network protocol.
After completing this practice you will be able to
To complete this practice, you need
Run the NetworkBindings file in the Demos folder on the CD-ROM accompanying this book for a demonstration of changing the binding order for a protocol.
In this exercise, you'll change the binding order of the protocols bound to your network adapter card.
The Advanced Settings dialog box appears.
What is the order of the protocols listed under Client For Microsoft Networks?
There should still be a check mark in the check box in front of Internet Protocol (TCP/IP).
Notice that the order of the protocols listed under Client For Microsoft Networks has changed. Internet Protocol (TCP/IP) is now listed above NWLink IPX/SPX/NetBIOS Compatible Transport Protocol.
In this exercise, you'll unbind TCP/IP from your network adapter card, leaving NWLink as the only protocol available to access other computers.
TCP/IP is no longer bound to your network adapter card.
In this exercise, you'll bind TCP/IP to your network adapter card.
The Advanced Settings dialog box appears.
There should now be a check mark in the check box to the left of Internet Protocol (TCP/IP).
TCP/IP is now bound to your network adapter card.
In this exercise, you'll uninstall the NWLink IPX/SPX/NetBIOS Compatible Transport Protocol.
The Local Area Connection Properties dialog box appears, displaying the adapter in use and the network components configured for this connection.
The Uninstall NWLink IPX/SPX/NetBIOS Compatible Transport Protocol dialog box appears.
Notice that NWLink IPX/SPX/NetBIOS Compatible Transport Protocol is no longer listed as an installed protocol.
Here are some questions to help you determine whether you have learned enough to move on to the next chapter. If you have difficulty answering these questions, review the material in this lesson before beginning the next chapter. The answers are in Appendix A, "Questions and Answers."