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Windows XP : Windows 2003 : Windows 2000
 

TCP / IP

How can I configure more than 6 IP addresses?

Using the TCP/IP configuration GUI you are limited to 6 IP addresses however more can be added by directly editing the registry:

  1. Log on as an Administrator
  2. Start the registry editor (regedt32.exe)
  3. Move to HKEY_LOCAL_MACHINE\SYSTEM\
    CurrentControlSet\Services and scroll down to the service for your adapter card (Look at the adapters tab on the Network Control panel applet). For example the Etherlink 3 card is Elnk3, however you want the first occurrence so goto Elnk31.
  4. Move to the Parameters\TCPIP subkey
  5. Double click the IPAddress value. Enter in additional IP addresses separated by a new line
  6. When finished click OK
  7. Next edit the SubnetMask and again add an entry for each IP address added (in the same order). Click OK when finished.
  8. Close the registry editor
  9. Reboot the machine
How can I configure the amount of bandwidth that Windows reserves for Quality of Service (QoS)?

QoS provides a guaranteed level of service for media-rich applications and some mission-critical applications. By default, Windows reserves only 20 percent of the connection bandwidth for QoS. To adjust this setting in the registry, perform the following steps:

  1. Start a registry editor (e.g., regedit.exe).
  2. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
    PSched\Parameters\Adapters\{} registry subkey.
  3. From the Edit menu, select New, DWORD Value.
  4. Enter the name NonBestEffortLimit, then press Enter.
  5. Double-click the new value, set it to the new level (e.g., 50 in decimal base), then click OK.
  6. Restart the computer for the change to take effect.

How can I install the Microsoft Loopback adapter in Windows XP?

The Loopback adapter is a useful tool for testing the configuration of network protocols such as TCP/IP on a local system when you don't have a network card. To install the Loopback adapter, perform the following steps:

  1. Start the Add Hardware Control Panel applet (go to Start, Control Panel, Add Hardware).
  2. Click Next to go to the introduction dialog box.
  3. Select "Yes, I have already connected the hardware," then click Next.
  4. Scroll to the bottom of the list of hardware, select "Add a new hardware device," then click Next.
  5. Select "Install the hardware that I manually select from a list (Advanced)," then click Next.
  6. Select "Network adapters," then click Next.
  7. Select Microsoft as the manufacturer, select "Microsoft Loopback Adapter" as the adapter, then click Next.
  8. Click Next to go to the confirmation page.
  9. Click Finish to complete the installation.

You will now have a new adapter under Network Connections.

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