A. A. The default 2 minutes can be changed by performing the following:

  1. Start the registry editor (regedit.exe)
  2. Move to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  3. From the Edit menu select New - DWord value and enter a name of ArpCacheLife, click OK
  4. Double click the new value and set to the new value in seconds and click OK
  5. Close the registry editor
  6. Reboot