MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

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■ You can add connections to the Network Bridge after it has been created by using
the Add To Bridge menu command.
■ Only one bridge can exist on a Windows XP Professional computer, but it can be
used to connect as many different media types as the computer can physically
accommodate.
■ You cannot create a bridge connection on computers running Windows 2000 or
earlier.
How to Repair a Connection
Lesson 1 Configuring Local Area Network (LAN) Connections
Sometimes LAN connections stop working. This problem can happen for many reasons,
including problems with the configuration of the network connection. When you
are troubleshooting a networking problem, a good place to start is by using the Repair
function provided by Windows XP Professional.
To repair a LAN connection, in the Network Connections window, right-click the
connection, and then click Repair. When you use the Repair command, Windows takes
the following actions:
1. Attempts to renew the connections DHCP lease, which is equivalent to using the
ipconfig /renew command at the command prompt.
2. Flushes the Address Resolution Protocol (ARP) cache, which is equivalent to using
the arp -d command at the command prompt.
3. Reloads the NetBIOS name cache, which is equivalent to using the nbtstat -R command
at the command prompt. A NetBIOS name update is also sent, which is
equivalent to using the nbtstat –RR command.
4. Flushes the Domain Name System (DNS) cache, which is equivalent to using the
ipconfig /flushdns command at the command prompt.
5. Registers the computer’s DNS name, which is equivalent to using the ipconfig
/registerdns command at the command prompt.
See Also For more information on the way the actions taken by the Repair command work,
see Chapter 13.
6. Restarts IEEE 802.1x Authentication (which you will learn more about in the
section “Authentication,” later in this chapter).
Exam Tip For the exam, be aware of the actions that happen when you repair a network
connection. In particular, know that repairing a connection (or using ipconfig /renew at the
command prompt) forces the computer to release its current IP address and attempt to renew
its lease with a DHCP server.